15-VXLAN Configuration Guide

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Contents

VXLAN overview·· 1

VXLAN benefits· 1

VXLAN network model 1

VXLAN packet format 2

VXLAN working mechanisms· 3

Generic VXLAN network establishment and forwarding process· 3

VXLAN tunnel establishment and assignment 3

Assignment of traffic to VXLANs· 3

MAC learning· 4

Unicast forwarding· 5

Flood· 6

Access modes of VSIs· 8

ARP and ND flood suppression· 9

VXLAN IP gateways· 10

Protocols and standards· 10

Configuring basic VXLAN features· 11

VXLAN tasks at a glance· 11

Prerequisites for VXLAN· 11

Setting the VXLAN hardware resource mode· 11

Creating a VXLAN on a VSI 12

Configuring a VXLAN tunnel 13

Manually creating a VXLAN tunnel 13

Enabling BFD on a VXLAN tunnel 14

Manually assigning VXLAN tunnels to a VXLAN· 15

Assigning customer frames to a VSI 15

Restrictions and guidelines for configuring traffic assignment methods· 15

Mapping a static Ethernet service instance to a VSI 16

Mapping dynamic Ethernet service instances to VSIs· 17

Configuring VLAN-based VXLAN assignment 17

Managing MAC address entries· 18

About MAC address entry management 18

Configuring static MAC address entries· 18

Disabling local-MAC address learning· 19

Disabling remote-MAC address learning· 20

Enabling local-MAC logging· 20

Setting the MAC learning priority of an Ethernet service instance· 20

Configuring VXLAN over VXLAN· 21

Configuring a multicast-mode VXLAN· 22

About multicast methods for multicast-mode VXLANs· 22

Prerequisites for multicast-mode VXLANs· 22

Configuring a multicast-mode VXLAN that uses the PIM method· 22

Configuring a multicast-mode VXLAN that uses the IGMP host method· 23

Setting the destination UDP port number of VXLAN packets· 23

Configuring VXLAN packet check· 24

Enabling default VXLAN decapsulation· 24

Disabling flooding for a VSI 25

Confining the flood traffic of an Ethernet service instance· 26

Enabling ARP flood suppression· 26

Enabling ND flood suppression· 27

Enabling VXLAN packet statistics· 27

Enabling packet statistics for a VSI 27

Enabling packet statistics for an AC· 27

Enabling packet statistics for VXLAN tunnels· 28

Testing the reachability of a remote VM·· 29

Display and maintenance commands for VXLANs· 29

VXLAN configuration examples· 30

Example: Configuring a unicast-mode VXLAN· 30

Example: Configuring a multicast-mode VXLAN· 34

Configuring VXLAN IP gateways· 42

About VXLAN IP gateways· 42

VXLAN IP gateways separated from VTEPs· 42

Centralized VXLAN IP gateway deployment 43

Centralized VXLAN gateway group deployment 44

Distributed VXLAN IP gateway deployment 45

Restrictions and guidelines: VXLAN IP gateway configuration· 50

VXLAN IP gateway tasks at a glance· 50

Prerequisites for VXLAN IP gateway configuration· 50

Configuring a centralized VXLAN IP gateway· 50

Restrictions and guidelines· 50

Configuring a gateway interface on a centralized VXLAN IP gateway· 50

Assigning a subnet to a VSI 51

Configuring a centralized VXLAN IP gateway group· 51

Configuring a VTEP group· 51

Specifying a VTEP group as the gateway for an access layer VTEP· 52

Configuring a distributed VXLAN IP gateway· 53

Restrictions and guidelines for distributed VXLAN IP gateway configuration· 53

Configuring a gateway interface on a distributed VXLAN IP gateway· 53

Enabling dynamic ARP or ND entry synchronization for distributed VXLAN IP gateways· 54

Assigning a subnet to a VSI 54

Managing ARP entries and ND entries· 55

Adding a static ARP entry· 55

Disabling remote ARP or ND learning for VXLANs· 55

Configuring a VSI interface· 56

Configuring optional parameters for a VSI interface· 56

Restoring the default settings of the VSI interface· 56

Enabling packet statistics for a VSI interface· 57

Display and maintenance commands for VXLAN IP gateways· 57

VXLAN IP gateway configuration examples· 58

Example: Configuring a centralized VXLAN IP gateway· 58

Example: Configuring a centralized VXLAN IP gateway group· 63

Example: Configuring distributed VXLAN IPv4 gateways· 66

Example: Configuring distributed VXLAN IPv6 gateways· 78

Configuring VXLAN-DCI 89

About VXLAN-DCI 89

VXLAN-DCI network model 89

Working mechanisms· 89

Intra-VXLAN traffic forwarding between sites· 90

Inter-VXLAN traffic forwarding between sites· 91

VXLAN-DCI tasks at a glance· 92

Configuring a VXLAN-DCI tunnel 92

Assigning VXLAN-DCI tunnels to a VXLAN· 93

Configuring a gateway interface on an ED·· 94

Enabling packet statistics for manually created VXLAN-DCI tunnels· 94

Display and maintenance commands for VXLAN-DCI 95

VXLAN-DCI configuration examples· 95

Example: Configuring a basic VXLAN-DCI network· 95

Configuring the VTEP as an OVSDB VTEP·· 104

About OVSDB VTEP· 104

Working mechanisms· 104

Protocols and standards· 104

Restrictions and guidelines: OVSDB VTEP configuration· 104

OVSDB VTEP tasks at a glance· 104

Prerequisites for OVSDB VTEP configuration· 105

Setting up an OVSDB connection to a controller 105

About OVSDB connection types· 105

Restrictions and guidelines for OVSDB controller connection setup· 105

Prerequisites for OVSDB controller connection setup· 105

Configuring active SSL connection settings· 106

Configuring passive SSL connection settings· 106

Configuring active TCP connection settings· 106

Configuring passive TCP connection settings· 107

Enabling the OVSDB server 107

Enabling the OVSDB VTEP service· 107

Specifying a global source address for VXLAN tunnels· 107

Specifying a VTEP access port 108

Enabling flood proxy on multicast VXLAN tunnels· 108

Disabling the ACLs issued by the OVSDB controller 109

OVSDB VTEP configuration examples· 109

Example: Configuring a unicast-mode VXLAN· 109

Example: Configuring flood proxy for a VXLAN· 112

 


VXLAN overview

Virtual eXtensible LAN (VXLAN) is a MAC-in-UDP technology that provides Layer 2 connectivity between distant network sites across an IP network. VXLAN is typically used in data centers and the access layer of campus networks for multitenant services.

VXLAN benefits

VXLAN provides the following benefits:

·     Support for more virtual switched domains than VLANs—Each VXLAN is uniquely identified by a 24-bit VXLAN ID. The total number of VXLANs can reach 16777216 (224). This specification makes VXLAN a better choice than 802.1Q VLAN to isolate traffic for user terminals.

·     Easy deployment and maintenance—VXLAN requires deployment only on the edge devices of the transport network. Devices in the transport network perform typical Layer 3 forwarding.

VXLAN network model

As shown in Figure 1, a VXLAN is a virtual Layer 2 network (known as the overlay network) built on top of an existing physical Layer 3 network (known as the underlay network). The overlay network encapsulates inter-site Layer 2 frames into VXLAN packets and forwards the packets to the destination along the Layer 3 forwarding paths provided by the underlay network. The underlay network is transparent to tenants, and geographically dispersed sites of a tenant are merged into a Layer 2 network.

The transport edge devices assign user terminals to different VXLANs, and then forward traffic between sites for user terminals by using VXLAN tunnels. Supported user terminals include PCs, wireless terminals, and VMs on servers.

 

 

NOTE:

This document uses VMs as examples to describe the mechanisms of VXLAN. The mechanisms do not differ between different kinds of user terminals.

 

The transport edge devices are VXLAN tunnel endpoints (VTEP). The VTEP implementation of the device uses ACs, VSIs, and VXLAN tunnels to provide VXLAN services.

·     VSI—A virtual switch instance is a virtual Layer 2 switched domain. Each VSI provides switching services only for one VXLAN. VSIs learn MAC addresses and forward frames independently of one another. VMs in different sites have Layer 2 connectivity if they are in the same VXLAN.

·     Attachment circuit (AC)—An AC is a physical or virtual link that connects a VTEP to a local site. Typically, ACs are Ethernet service instances that are associated with the VSI of a VXLAN. Traffic received from an AC is assigned to the VSI associated with the AC. Ethernet service instances are created on site-facing Layer 2 interfaces. An Ethernet service instance matches a list of custom VLANs by using a frame match criterion.

·     VXLAN tunnel—Logical point-to-point tunnels between VTEPs over the transport network. Each VXLAN tunnel can trunk multiple VXLANs.

VTEPs encapsulate VXLAN traffic in the VXLAN, outer UDP, and outer IP headers. The devices in the transport network forward VXLAN traffic only based on the outer IP header.

Figure 1 VXLAN network model

 

VXLAN packet format

As shown in Figure 2, a VTEP encapsulates a frame in the following headers:

·     8-byte VXLAN header—VXLAN information for the frame.

¡     Flags—If the I bit is 1, the VXLAN ID is valid. If the I bit is 0, the VXLAN ID is invalid. All other bits are reserved and set to 0.

¡     24-bit VXLAN ID—Identifies the VXLAN of the frame. It is also called the virtual network identifier (VNI).

·     8-byte outer UDP header for VXLAN—The default VXLAN destination UDP port number is 4789.

·     20-byte outer IP header—Valid addresses of VTEPs or VXLAN multicast groups on the transport network. Devices in the transport network forward VXLAN packets based on the outer IP header.

Figure 2 VXLAN packet format

 

VXLAN working mechanisms

Generic VXLAN network establishment and forwarding process

The VTEP uses the following process to establish the VXLAN network and forward an inter-site frame:

1.     Discovers remote VTEPs, establishes VXLAN tunnels, and assigns the VXLAN tunnels to VXLANs.

2.     Assigns the frame to its matching VXLAN if the frame is sent between sites.

3.     Performs MAC learning on the VXLAN's VSI.

4.     Forwards the frame through VXLAN tunnels.

This section describes this process in detail. For intra-site frames in a VSI, the system performs typical Layer 2 forwarding, and it processes 802.1Q VLAN tags as described in "Access modes of VSIs."

VXLAN tunnel establishment and assignment

To provide Layer 2 connectivity for a VXLAN between two sites, you must create a VXLAN tunnel between the sites and assign the tunnel to the VXLAN.

VXLAN tunnel establishment

VXLAN supports manual and automatic VXLAN tunnel establishment.

·     Manual creation—Manually create a VXLAN tunnel interface, and specify the tunnel source and destination IP addresses on the peer VTEPs.

·     Automatic creation—Configure Ethernet Virtual Private Network (EVPN) to automatically discover VTEPs and set up VXLAN tunnels. For more information about EVPN, see EVPN Configuration Guide.

VXLAN tunnel assignment

VXLAN supports manual and automatic VXLAN tunnel assignment.

·     Manual assignment—Manually assign VXLAN tunnels to VXLANs.

·     Automatic assignment—Run EVPN to automatically assign VXLAN tunnels to VXLANs. For more information about EVPN, see EVPN Configuration Guide.

Assignment of traffic to VXLANs

Traffic from the local site to a remote site

The VTEP uses the following methods to assign customer frames to a VXLAN:

·     Ethernet service instance-to-VSI mapping—This method uses the frame match criterion of an Ethernet service instance to match a list of VLANs on a site-facing Layer 2 interface. The frame match criterion specifies the characteristics of traffic from the VLANs, such as tagging status and VLAN IDs. The VTEP assigns customer traffic to a VXLAN by mapping the Ethernet service instance to a VSI.

·     VLAN-based VXLAN assignment—This method maps a VLAN to a VXLAN. The VTEP assigns all frames of the VLAN to the VXLAN.

As shown in Figure 3, Ethernet service instance 1 matches VLAN 2 and is mapped to VSI A (VXLAN 10). When a frame from VLAN 2 arrives, the VTEP assigns the frame to VXLAN 10, and looks up VSI A's MAC address table for the outgoing interface.

Figure 3 Identifying traffic from the local site

 

Traffic from a remote site to the local site

When a frame arrives at a VXLAN tunnel, the VTEP uses the VXLAN ID in the frame to identify its VXLAN.

MAC learning

The VTEP performs source MAC learning on the VSI as a Layer 2 switch.

·     For traffic from the local site to the remote site, the VTEP learns the source MAC address before VXLAN encapsulation.

·     For traffic from the remote site to the local site, the VTEP learns the source MAC address after removing the VXLAN header.

A VSI's MAC address table includes the following types of MAC address entries:

·     Local MAC—MAC entries learned from the local site. The outgoing interfaces for the MAC address entries are site-facing interfaces.

¡     Static—Manually added MAC entries.

¡     Dynamic—Dynamically learned MAC entries.

·     Remote MAC—MAC entries learned from a remote site, including static and dynamic MAC entries. The outgoing interfaces for the MAC addresses are VXLAN tunnel interfaces.

¡     Static—Manually added MAC entries.

¡     Dynamic—MAC entries learned in the data plane from incoming traffic on VXLAN tunnels. The learned MAC addresses are contained in the inner Ethernet header.

¡     BGP EVPN—MAC entries advertised through BGP EVPN. For more information, see EVPN Configuration Guide.

¡     OpenFlow—MAC entries issued by a remote controller through OpenFlow. For more information, see OpenFlow Configuration Guide.

¡     OVSDB—MAC entries issued by a remote controller through OVSDB.

The following shows the priority order of different types of remote MAC address entries:

a.     Static MAC address entries, and MAC address entries issued by a remote controller through OpenFlow or OVSDB. These types of entries have the same priority and overwrite each other.

b.     MAC address entries advertised through BGP EVPN.

c.     Dynamic MAC address entries.

Unicast forwarding

Intra-site unicast forwarding

The VTEP uses the following process to forward a known unicast frame within a site:

1.     Identifies the VSI of the frame.

2.     Looks up the destination MAC address in the VSI's MAC address table for the outgoing interface.

3.     Sends the frame out of the matching outgoing interface.

As shown in Figure 4, VTEP 1 forwards a frame from VM 1 to VM 4 within the local site in VLAN 10 as follows:

1.     Identifies that the frame belongs to VSI A when the frame arrives at Interface A.

2.     Looks up the destination MAC address (MAC 4) in the MAC address table of VSI A for the outgoing interface.

3.     Sends the frame out of the matching outgoing interface (Interface B) to VM 4 in VLAN 10.

Figure 4 Intra-site unicast

 

Inter-site unicast forwarding

The following process (see Figure 5) applies to a known unicast frame between sites:

1.     The source VTEP encapsulates the Ethernet frame in the VXLAN/UDP/IP header.

In the outer IP header, the source IP address is the source VTEP's VXLAN tunnel source IP address. The destination IP address is the VXLAN tunnel destination IP address.

2.     The source VTEP forwards the encapsulated packet out of the outgoing VXLAN tunnel interface found in the VSI's MAC address table.

3.     The intermediate transport devices (P devices) forward the frame to the destination VTEP by using the outer IP header.

4.     The destination VTEP removes the headers on top of the inner Ethernet frame. It then performs MAC address table lookup in the VXLAN's VSI to forward the frame out of the matching outgoing interface.

Figure 5 Inter-site unicast

Flood

The source VTEP floods a broadcast, multicast, or unknown unicast frame to all site-facing interfaces and VXLAN tunnels in the VXLAN, except for the incoming interface. Each destination VTEP floods the inner Ethernet frame to all site-facing interfaces in the VXLAN. To avoid loops, the destination VTEPs do not flood the frame back to VXLAN tunnels.

VXLAN supports unicast mode (also called head-end replication), multicast mode (also called tandem replication), and flood proxy mode for flood traffic.

Unicast mode (head-end replication)

As shown in Figure 6, the source VTEP replicates the flood frame, and then sends one replica to the destination IP address of each VXLAN tunnel in the VXLAN.

Figure 6 Unicast mode

 

Multicast mode (tandem replication)

As shown in Figure 7, the source VTEP sends the flood frame in a multicast VXLAN packet destined for a multicast group address. Transport network devices replicate and forward the packet to remote VTEPs based on their multicast forwarding entries.

Figure 7 Multicast mode

 

Flood proxy mode (proxy server replication)

As shown in Figure 8, the source VTEP sends the flood frame in a VXLAN packet over a VXLAN tunnel to a flood proxy server. The flood proxy server replicates and forwards the packet to each remote VTEP through its VXLAN tunnels.

The flood proxy mode applies to VXLANs that have many sites. This mode reduces flood traffic in the transport network without using a multicast protocol. To use a flood proxy server, you must set up a VXLAN tunnel to the server on each VTEP.

Figure 8 Flood proxy mode

 

The flood proxy mode is typically used in SDN transport networks that have a flood proxy server. For VTEPs to forward packets based on the MAC address table issued by an SDN controller, you must perform the following tasks on the VTEPs:

·     Disable remote-MAC address learning by using the vxlan tunnel mac-learning disable command.

·     Disable source MAC check on all transport-facing interfaces by using the undo mac-address static source-check enable command. If the VTEP is an IRF fabric, you must also disable the feature on all IRF ports.

Access modes of VSIs

The access mode of a VSI determines how the VTEP processes the 802.1Q VLAN tags in the Ethernet frames.

VLAN access mode

In this mode, Ethernet frames received from or sent to the local site must contain 802.1Q VLAN tags.

·     For an Ethernet frame received from the local site, the VTEP removes all its 802.1Q VLAN tags before forwarding the frame.

·     For an Ethernet frame destined for the local site, the VTEP adds 802.1Q VLAN tags to the frame before forwarding the frame.

In VLAN access mode, VXLAN packets sent between sites do not contain 802.1Q VLAN tags. You can use different 802.1Q VLANs to provide the same service in different sites.

Ethernet access mode

The VTEP does not process the 802.1Q VLAN tags of Ethernet frames received from or sent to the local site.

·     For an Ethernet frame received from the local site, the VTEP forwards the frame with the 802.1Q VLAN tags intact.

·     For an Ethernet frame destined for the local site, the VTEP forwards the frame without adding 802.1Q VLAN tags.

In Ethernet access mode, VXLAN packets sent between VXLAN sites contain 802.1Q VLAN tags. You must use the same VLAN to provide the same service between sites.

ARP and ND flood suppression

ARP or ND flood suppression reduces ARP request broadcasts or ND request multicasts by enabling the VTEP to reply to ARP or ND requests on behalf of VMs.

As shown in Figure 9, this feature snoops ARP or ND packets to populate the ARP or ND flood suppression table with local and remote MAC addresses. If an ARP or ND request has a matching entry, the VTEP replies to the request on behalf of the VM. If no match is found, the VTEP floods the request to both local and remote sites.

Figure 9 ARP flood suppression

 

The following uses ARP flood suppression as an example to explain the flood suppression workflow:

1.     VM 1 sends an ARP request to obtain the MAC address of VM 7.

2.     VTEP 1 creates a suppression entry for VM 1, and floods the ARP request in the VXLAN.

3.     VTEP 2 and VTEP 3 de-encapsulate the ARP request. The VTEPs create a suppression entry for VM 1, and broadcast the request in the local site.

4.     VM 7 sends an ARP reply.

5.     VTEP 2 creates a suppression entry for VM 7 and forwards the ARP reply to VTEP 1.

6.     VTEP 1 de-encapsulates the ARP reply, creates a suppression entry for VM 7, and forwards the ARP reply to VM 1.

7.     VM 4 sends an ARP request to obtain the MAC address of VM 1 or VM 7.

8.     VTEP 1 creates a suppression entry for VM 4 and replies to the ARP request.

9.     VM 10 sends an ARP request to obtain the MAC address of VM 1.

10.     VTEP 3 creates a suppression entry for VM 10 and replies to the ARP request.

VXLAN IP gateways

A VXLAN IP gateway provides Layer 3 forwarding services for VMs in VXLANs. A VXLAN IP gateway can be an independent device or be collocated with a VTEP. For more information about VXLAN IP gateway placement, see "Configuring VXLAN IP gateways."

Protocols and standards

RFC 7348, Virtual eXtensible Local Area Network (VXLAN): A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks


Configuring basic VXLAN features

VXLAN tasks at a glance

To configure basic VXLAN settings, perform the following tasks on VTEPs:

1.     (Optional.) Setting the VXLAN hardware resource mode

2.     Creating a VXLAN on a VSI

3.     Configuring a VXLAN tunnel

4.     Manually assigning VXLAN tunnels to a VXLAN

5.     Assigning customer frames to a VSI

6.     (Optional.) Managing MAC address entries

¡     Configuring static MAC address entries

¡     Disabling local-MAC address learning

¡     Disabling remote-MAC address learning

¡     Enabling local-MAC logging

¡     Setting the MAC learning priority of an Ethernet service instance

7.     (Optional.) Configuring VXLAN over VXLAN

8.     Configuring a multicast-mode VXLAN

If the network is multicast dense, configure the VTEP to flood VXLAN traffic in multicast mode.

9.     (Optional.) Configuring VXLAN packet parameters

¡     Setting the destination UDP port number of VXLAN packets

¡     Configuring VXLAN packet check

¡     Enabling default VXLAN decapsulation

10.     (Optional.) Reducing flood traffic in the transport network

¡     Disabling flooding for a VSI

¡     Confining the flood traffic of an Ethernet service instance

¡     Enabling ARP flood suppression

¡     Enabling ND flood suppression

11.     Maintaining VXLAN networks

¡     Enabling VXLAN packet statistics

¡     Testing the reachability of a remote VM

Prerequisites for VXLAN

Configure a routing protocol on the devices in the transport network to make sure the VTEPs can reach one another.

Setting the VXLAN hardware resource mode

About the VXLAN hardware resource mode

The device supports the following VXLAN hardware resource modes:

·     l2gw—Layer 2 gateway mode.

·     l3gw—Layer 3 gateway mode.

You must set the VXLAN hardware resource mode to l3gw on EDs of a VXLAN-DCI network.

Restrictions and guidelines

For the hardware resource mode to take effect, you must reboot the device.

Procedure

1.     Enter system view.

system-view

2.     Set the VXLAN hardware resource mode.

hardware-resource vxlan { l2gw | l3gw }

By default, the VXLAN hardware resource mode is l2gw.

For more information about this command, see VXLAN Command Reference.

Creating a VXLAN on a VSI

Restrictions and guidelines

If you use both the restrain and bandwidth commands on a VSI, the following rules apply:

·     If the restraint bandwidth is 0, the restrain command takes effect.

·     If the restraint bandwidth is not 0, the bandwidth command takes effect.

Procedure

1.     Enter system view.

system-view

2.     Enable L2VPN.

l2vpn enable

By default, L2VPN is disabled.

3.     Create a VSI and enter VSI view.

vsi vsi-name

4.     Enable the VSI.

undo shutdown

By default, a VSI is enabled.

5.     Create a VXLAN and enter VXLAN view.

vxlan vxlan-id

You can create only one VXLAN on a VSI.

The VXLAN ID must be unique for each VSI.

6.     (Optional.) Configure VSI parameters:

a.     Return to VSI view.

quit

b.     Configure a VSI description.

description text

By default, a VSI does not have a description.

c.     Set the MTU for the VSI.

mtu size

The default MTU for a VSI is 1500 bytes.

d.     Set the maximum bandwidth for the VSI.

bandwidth bandwidth

By default, the maximum bandwidth is not limited for a VSI.

e.     Set the broadcast, multicast, or unknown unicast restraint bandwidth for the VSI.

restrain { broadcast | multicast | unknown-unicast } bandwidth

By default, a VSI's broadcast restraint bandwidth, multicast restraint bandwidth, and unknown unicast restraint bandwidth are not set.

f.     Enable MAC address learning for the VSI.

mac-learning enable

By default, MAC address learning is enabled for a VSI.

Configuring a VXLAN tunnel

Manually creating a VXLAN tunnel

About manual VXLAN tunnel creation

When you manually create a VXLAN tunnel, specify addresses on the local VTEP and the remote VTEP as the tunnel source and destination addresses, respectively.

Restrictions and guidelines

As a best practice, do not configure multiple VXLAN tunnels to use the same source and destination IP addresses.

Make sure the following VXLAN tunnels are not associated with the same VXLAN when they have the same tunnel destination IP address:

·     A VXLAN tunnel automatically created by EVPN.

·     A manually created VXLAN tunnel.

For more information about EVPN, see EVPN Configuration Guide.

This task provides basic VXLAN tunnel configuration. For more information about tunnel configuration and commands, see Layer 3—IP Services Configuration Guide and Layer 3—IP Services Command Reference.

Procedure

1.     Enter system view.

system-view

2.     (Optional.) Specify a global source IP address for VXLAN tunnels.

tunnel global source-address ipv4-address

By default, no global source IP address is specified for VXLAN tunnels.

A VXLAN tunnel uses the global source address if you do not specify a source interface or source address for the tunnel.

3.     Create a VXLAN tunnel interface and enter tunnel interface view.

interface tunnel tunnel-number mode vxlan

The endpoints of a tunnel must use the same tunnel mode.

4.     Specify a source address for the tunnel. Choose one of the following methods:

¡     Specify a source IP address for the tunnel.

source ipv4-address

The specified IP address is used in the outer IP header of tunneled VXLAN packets.

¡     Specify a source interface for the tunnel.

source interface-type interface-number

The IP address of the specified interface is used in the outer IP header of tunneled VXLAN packets.

By default, no source IP address or source interface is specified for a tunnel.

Do not perform this step if you are using OVSDB for VXLAN tunnel management.

For a multicast-mode VXLAN, the source IP address cannot be a loopback interface's address, and the source interface cannot be a loopback interface.

5.     Specify a destination IP address for the tunnel.

destination ipv4-address

By default, no destination IP address is specified for a tunnel.

Specify the remote VTEP's IP address. This IP address will be the destination IP address in the outer IP header of tunneled VXLAN packets.

Enabling BFD on a VXLAN tunnel

About BFD on a VXLAN tunnel

Enable BFD on both ends of a VXLAN tunnel for quick link connectivity detection. The VTEPs periodically send BFD single-hop control packets to each other through the VXLAN tunnel. A VTEP sets the tunnel state to Defect if it has not received control packets from the remote end for 5 seconds. In this situation, the tunnel interface state is still Up. The tunnel state will change from Defect to Up if the VTEP can receive BFD control packets again.

Restrictions and guidelines

You must enable BFD on both ends of a VXLAN tunnel.

Procedure

1.     Enter system view.

system-view

2.     Specify the reserved VXLAN.

reserved vxlan vxlan-id

By default, no VXLAN has been reserved.

For BFD sessions to come up, you must reserve a VXLAN.

You can specify only one reserved VXLAN on the VTEP. The reserved VXLAN cannot be the VXLAN created on any VSI.

The reserved VXLAN ID cannot be the same as the remote VXLAN ID specified by using the mapping vni command. For more information about the mapping vni command, see EVPN Command Reference.

3.     Enter VXLAN tunnel interface view.

interface tunnel tunnel-number

4.     Enable BFD on the tunnel.

tunnel bfd enable destination-mac mac-address

By default, BFD is disabled on a tunnel.

Manually assigning VXLAN tunnels to a VXLAN

About VXLAN tunnel manual assignment

To provide Layer 2 connectivity for a VXLAN between two sites, you must assign the VXLAN tunnel between the sites to the VXLAN.

You can assign multiple VXLAN tunnels to a VXLAN, and configure a VXLAN tunnel to trunk multiple VXLANs. For a unicast-mode VXLAN, the system floods unknown unicast, multicast, and broadcast traffic to each tunnel associated with the VXLAN. If a flood proxy server is used, the VTEP sends flood traffic to the server through the flood proxy tunnel. The flood proxy server replicates and forwards flood traffic to remote VTEPs.

Restrictions and guidelines

For full Layer 2 connectivity in the VXLAN, make sure the VXLAN contains the VXLAN tunnel between each pair of sites in the VXLAN.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Enter VXLAN view.

vxlan vxlan-id

4.     Assign VXLAN tunnels to the VXLAN.

tunnel { tunnel-number [ backup-tunnel tunnel-number | flooding-proxy } ] | all }

By default, a VXLAN does not contain any VXLAN tunnels.

 

Parameter

Description

backup-tunnel tunnel-number

Specifies a backup tunnel. When the primary VXLAN tunnel is operating correctly, the backup VXLAN tunnel does not forward traffic. When the primary VXLAN tunnel goes down, traffic is switched to the backup VXLAN tunnel.

flooding-proxy

Enables flood proxy on a tunnel for it to send flood traffic to the flood proxy server. The flood proxy server replicates and forwards flood traffic to remote VTEPs.

 

Assigning customer frames to a VSI

Restrictions and guidelines for configuring traffic assignment methods

VLAN-based VXLAN assignment is mutually exclusive with the manually created Ethernet service instances and the Ethernet service instances automatically created for 802.1X or MAC authentication VSI manipulation. To create these Ethernet service instances, you must first disable VLAN-based VXLAN assignment by using the undo vxlan vlan-based command. To enable VLAN-based VXLAN assignment, you must first delete all Ethernet service instances.

Mapping a static Ethernet service instance to a VSI

About static Ethernet service instance mappings

A static Ethernet service instance matches a list of VLANs on a site-facing interface. The VTEP assigns customer traffic from the VLANs to a VXLAN by mapping the Ethernet service instance to a VSI.

Restrictions and guidelines

Ethernet service instance bindings of VSIs are mutually exclusive with port bridging, QinQ, and VLAN mapping on a Layer 2 Ethernet interface or Layer 2 aggregate interface. Do not configure these features simultaneously on the same interface. Otherwise, the features cannot take effect.

Make sure the VLANs that each Ethernet service instance matches have been created and the site-facing interface where the Ethernet service instance is configured has been assigned to the VLANs.

For information about the frame match criterion configuration restrictions and guidelines of Ethernet service instances, see VXLAN Command Reference.

Procedure

1.     Enter system view.

system-view

2.     Enter interface view.

¡     Enter Layer 2 Ethernet interface view.

interface interface-type interface-number

¡     Enter Layer 2 aggregate interface view.

interface bridge-aggregation interface-number

3.     Create an Ethernet service instance and enter Ethernet service instance view.

service-instance instance-id

4.     Configure a frame match criterion. Choose one of the following options:

¡     Match frames tagged with the specified outer 802.1Q VLAN IDs.

encapsulation s-vid vlan-id [ only-tagged ]

encapsulation s-vid vlan-id-list

¡     Match frames tagged with the specified outer and inner 802.1Q VLAN IDs.

encapsulation s-vid vlan-id-list c-vid vlan-id

encapsulation s-vid vlan-id c-vid { vlan-id | all }

¡     Match any 802.1Q tagged or untagged frames.

encapsulation { tagged | untagged }

¡     Match frames that do not match any other service instance on the interface.

encapsulation default

An interface can contain only one Ethernet service instance that uses the encapsulation default criterion.

An Ethernet service instance that uses the encapsulation default criterion matches any frames if it is the only instance on the interface.

By default, an Ethernet service instance does not contain a frame match criterion.

5.     (Optional.) Set the bandwidth limit for the Ethernet service instance.

bandwidth bandwidth

By default, no bandwidth limit is set for an Ethernet service instance.

6.     Map the Ethernet service instance to a VSI.

xconnect vsi vsi-name [ access-mode { ethernet | vlan } ] [ track track-entry-number&<1-3> ]

By default, an Ethernet service instance is not mapped to any VSI.

Mapping dynamic Ethernet service instances to VSIs

About dynamic Ethernet service instance mappings

The 802.1X or MAC authentication feature can use the authorization VSI, the guest VSI, the Auth-Fail VSI, and the critical VSI to control the access of users to network resources. When assigning a user to a VSI, 802.1X or MAC authentication sends the VXLAN feature the VSI information and the user's access information, including access interface, VLAN, and MAC address. Then the VXLAN feature creates a dynamic Ethernet service instance for the user and maps it to the VSI. For more information about 802.1X authentication and MAC authentication, see Security Configuration Guide.

A dynamic Ethernet service instance supports MAC-based match mode. This mode matches frames by VLAN ID and source MAC address. To use MAC-based traffic match mode for dynamic Ethernet service instances, you must enable MAC authentication or 802.1X authentication that uses MAC-based access control.

Procedure

1.     Enter system view.

system-view

2.     Enter interface view.

¡     Enter Layer 2 Ethernet interface view.

interface interface-type interface-number

¡     Enter Layer 2 aggregate interface view.

interface bridge-aggregation interface-number

3.     Enable MAC-based traffic match mode for dynamic Ethernet service instances on the interface.

mac-based ac

By default, MAC-based traffic match mode is disabled for dynamic Ethernet service instances.

For more information about this command, see VXLAN Command Reference.

4.     Enable MAC authentication or 802.1X authentication that uses MAC-based access control.

To use the MAC-based traffic match mode, configure MAC authentication or 802.1X authentication that uses MAC-based access control and perform one of the following tasks:

¡     Configure the guest VSI, Auth-Fail VSI, or critical VSI on the 802.1X- or MAC authentication-enabled interface.

¡     Issue an authorization VSI to an 802.1X or MAC authentication user from a remote AAA server.

Then, the device will automatically create a dynamic Ethernet service instance for the 802.1X or MAC authentication user and map the Ethernet service instance to a VSI.

For more information about configuring 802.1X authentication and MAC authentication, see Security Configuration Guide.

Configuring VLAN-based VXLAN assignment

About VLAN-based VXLAN assignment

VLAN-based VXLAN assignment enables the device to assign all traffic of a VLAN to a VXLAN. If you enable this feature and map a VLAN to a VXLAN, the device automatically performs the following operations:

1.     Creates an Ethernet service instance that uses the VLAN ID as its instance ID on each interface in the VLAN. The matching outer VLAN ID of the Ethernet service instances is the VLAN ID.

2.     Maps the Ethernet service instances to the VSI of the VXLAN.

Restrictions and guidelines

Do not configure this feature together with EVPN distributed relay. For information about EVPN distributed relay, see EVPN Configuration Guide.

If you map a VLAN to a VXLAN, the VTEP cannot perform non-VXLAN Layer 2 forwarding in the VLAN. Also, the VLAN interface of the VLAN cannot perform Layer 3 forwarding.

The Ethernet service instance creation or deletion time is affected by the number of VLANs mapped to a VXLAN and the number of trunk ports assigned to the VLANs. The larger the numbers, the longer the time. During AC creation or deletion, other operations are queued.

Prerequisites

Use the vxlan command to create the VXLAN to which a VLAN is mapped.

Procedure

1.     Enter system view.

system-view

2.     Enable VLAN-based VXLAN assignment.

vxlan vlan-based

By default, VLAN-based VXLAN assignment is disabled.

3.     Create a VLAN and enter VLAN view.

vlan vlan-id

Do not specify VLAN 1 for VLAN-based VXLAN assignment.

4.     Map the VLAN to a VXLAN.

vxlan vni vxlan-id

By default, a VLAN is not mapped to a VXLAN.

Do not map a VLAN to the L3 VXLAN ID of EVPN.

Managing MAC address entries

About MAC address entry management

Local-MAC address entries can be manually added or dynamically learned. You can log local MAC addresses and local-MAC changes.

Remote-MAC address entries have a variety of types, including manually added entries and dynamically learned entries.

Configuring static MAC address entries

Restrictions and guidelines

Do not configure static remote-MAC entries for VXLAN tunnels that are automatically established by using EVPN.

·     EVPN re-establishes VXLAN tunnels if the transport-facing interface goes down and then comes up. If you have configured static remote-MAC entries, the entries are deleted when the tunnels are re-established.

·     EVPN re-establishes VXLAN tunnels if you perform configuration rollback. If the tunnel IDs change during tunnel re-establishment, configuration rollback fails, and static remote-MAC entries on the tunnels cannot be restored.

For more information about EVPN, see EVPN Configuration Guide.

Procedure

1.     Enter system view.

system-view

2.     Add a static local-MAC address entry.

mac-address static mac-address interface interface-type interface-number service-instance instance-id vsi vsi-name

For successful configuration, make sure the Ethernet service instance has been mapped to the VSI.

3.     Add a static remote-MAC address entry.

mac-address static mac-address interface tunnel tunnel-number vsi vsi-name

For the setting to take effect, make sure the VSI's VXLAN has been specified on the VXLAN tunnel.

Disabling local-MAC address learning

Restrictions and guidelines

When MAC address learning is disabled for Ethernet service instances, you can only configure static local-MAC address entries by using the mac-address static command.

Prerequisites

Before you enable MAC address learning for an Ethernet service instance, you must use the mac-learning enable command to enable MAC address learning for the associated VSI.

Procedure

1.     Enter system view.

system-view

2.     Enter interface view.

¡     Enter Layer 2 Ethernet interface view.

interface interface-type interface-number

¡     Enter Layer 2 aggregate interface view.

interface bridge-aggregation interface-number

3.     Enter Ethernet service instance view.

service-instance instance-id

4.     Disable MAC address learning for the Ethernet service instance.

learning mode disable

By default, MAC address learning is enabled for Ethernet service instances.

Disabling remote-MAC address learning

About disabling remote-MAC address learning

When network attacks occur, disable remote-MAC address learning to prevent the device from learning incorrect remote MAC addresses. You can manually add static remote-MAC address entries.

Procedure

1.     Enter system view.

system-view

2.     Disable remote-MAC address learning.

vxlan tunnel mac-learning disable

By default, remote-MAC address learning is enabled.

Enabling local-MAC logging

About local-MAC logging

When the local-MAC logging feature is enabled, the VXLAN module immediately sends a log message with its local MAC addresses to the information center. When a local MAC address is added or removed, a log message is also sent to the information center to report the local-MAC change.

With the information center, you can set log message filtering and output rules, including output destinations. For more information about configuring the information center, see Network Management and Monitoring Configuration Guide.

Procedure

1.     Enter system view.

system-view

2.     Enable local-MAC logging.

vxlan local-mac report

By default, local-MAC logging is disabled.

Setting the MAC learning priority of an Ethernet service instance

About the MAC learning priority of Ethernet service instances

A VSI uses the MAC learning priority to control MAC address learning of its Ethernet service instances. An Ethernet service instance with high MAC learning priority takes precedence over an Ethernet service instance with low MAC learning priority when they learn the same MAC address. For example:

·     A MAC address entry of a high-priority Ethernet service instance can be overwritten only when the MAC address is learned on another high-priority Ethernet service instance.

·     A MAC address entry of a low-priority Ethernet service instance is overwritten when the MAC address is learned on a high-priority Ethernet service instance or another low-priority Ethernet service instance.

Procedure

1.     Enter system view.

system-view

2.     Enter interface view.

¡     Enter Layer 2 Ethernet interface view.

interface interface-type interface-number

¡     Enter Layer 2 aggregate interface view.

interface bridge-aggregation interface-number

3.     Enter Ethernet service instance view.

service-instance instance-id

4.     Set the MAC learning priority of the Ethernet service instance.

mac-address mac-learning priority { high | low }

By default, the MAC learning priority of an Ethernet service instance is low.

This setting takes effect only after the Ethernet service instance is mapped to a VSI.

Configuring VXLAN over VXLAN

About VXLAN over VXLAN

By default, the device de-encapsulates an incoming VXLAN packet if the packet's destination UDP port number is the VXLAN destination UDP port number (configured by using vxlan udp-port). For VXLAN packets received from a non-transport-facing interface on the device to traverse the VXLAN network through VXLAN tunnels, perform the following tasks on the interface:

·     Enable VXLAN over VXLAN.

·     Configure Ethernet service instance and VSI settings for matching the VXLAN packets.

When receiving VXLAN packets on the interface, the device adds a second layer of VXLAN encapsulation to the packets and forwards them over VXLAN tunnels.

Restrictions and guidelines

An interface enabled with VXLAN over VXLAN does not de-encapsulate incoming VXLAN packets. Do not enable this feature on a transport-facing interface.

For an aggregate interface, you do not need to enable VXLAN over VXLAN on its member ports if this feature is already enabled on that aggregate interface.

Procedure

1.     Enter system view.

system-view

2.     Enter interface view.

¡     Enter Layer 2 Ethernet interface view.

interface interface-type interface-number

¡     Enter Layer 2 aggregate interface view.

interface bridge-aggregation interface-number

3.     Enable VXLAN over VXLAN.

vxlan-over-vxlan enable

By default, VXLAN over VXLAN is disabled on an interface.

Configuring a multicast-mode VXLAN

About multicast methods for multicast-mode VXLANs

A multicast-mode VXLAN supports the following multicast methods:

·     PIM—VTEPs and transport network devices run PIM to generate multicast forwarding entries. To forward multicast traffic correctly, you must use the source IP address of an up VXLAN tunnel as the source IP address of multicast VXLAN packets. As a best practice, use the source IP address of a VXLAN tunnel that uses the IP address of a loopback interface. If the VTEP has multiple transport-facing interfaces, PIM dynamically selects the outgoing interfaces for multicast VXLAN packets.

·     IGMP host—VTEPs and transport network devices run PIM and IGMP to generate multicast forwarding entries.

¡     Transport-facing interfaces of VTEPs act as IGMP hosts.

¡     Transport network devices connected to a VTEP run IGMP.

¡     All transport network devices run PIM.

On a VTEP, you must use the IP address of the transport-facing interface as the source IP address for multicast VXLAN packets. If the VTEP has multiple transport-facing interfaces, multicast VXLAN packets are sent to the transport network through the interface that provides the source IP address for multicast VXLAN packets.

VTEPs in a multicast-mode VXLAN can use different multicast methods.

Prerequisites for multicast-mode VXLANs

For a multicast-mode VXLAN to flood traffic, you must perform the following tasks in addition to multicast-mode configuration:

·     Enable IP multicast routing on all VTEPs and transport network devices.

·     Configure a multicast routing protocol on transport network devices. A VTEP can be both a multicast source and multicast group member. As a best practice, use BIDIR-PIM.

·     Enable IGMP on transport network devices that are connected to an IGMP host-enabled VTEP.

Configuring a multicast-mode VXLAN that uses the PIM method

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Enter VXLAN view.

vxlan vxlan-id

4.     Assign a multicast group address for flood traffic, and specify a source IP address for multicast VXLAN packets.

group group-address source source-address

By default, a VXLAN uses unicast mode for flood traffic. No multicast group address or source IP address is specified for multicast VXLAN packets.

You must assign all VTEPs in a multicast-mode VXLAN to the same multicast group.

5.     Enter interface view.

interface interface-type interface-number

Enable PIM on the loopback interface and all transport-facing interfaces.

6.     Enable PIM. Choose one of the following modes:

¡     Enable PIM-SM.

pim sm

¡     Enable PIM-DM.

pim dm

By default, PIM is disabled on an interface.

Configuring a multicast-mode VXLAN that uses the IGMP host method

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Enter VXLAN view.

vxlan vxlan-id

4.     Assign a multicast group address for flood traffic, and specify a source IP address for multicast VXLAN packets.

group group-address source source-address

By default, a VXLAN uses unicast mode for flood traffic. No multicast group address or source IP address is specified for multicast VXLAN packets.

You must assign all VTEPs in a multicast-mode VXLAN to the same multicast group.

5.     Enter the view of the transport-facing interface.

interface interface-type interface-number

6.     Enable the IGMP host feature.

igmp host enable

By default, the IGMP host feature is disabled on an interface.

The IGMP host feature enables the interface to send IGMP reports in response to IGMP queries before it can receive traffic from the multicast group.

Setting the destination UDP port number of VXLAN packets

1.     Enter system view.

system-view

2.     Set a destination UDP port for VXLAN packets.

vxlan udp-port port-number

By default, the destination UDP port number is 4789 for VXLAN packets.

You must configure the same destination UDP port number on all VTEPs in a VXLAN.

Configuring VXLAN packet check

About VXLAN packet check

The device can check the UDP checksum and 802.1Q VLAN tags of each received VXLAN packet.

·     UDP checksum check—The device always sets the UDP checksum of VXLAN packets to zero. For compatibility with third-party devices, a VXLAN packet can pass the check if its UDP checksum is zero or correct. If its UDP checksum is incorrect, the VXLAN packet fails the check and is dropped.

·     VLAN tag check—The device checks the inner Ethernet header of each VXLAN packet for 802.1Q VLAN tags. If the header contains 802.1Q VLAN tags, the device drops the packet.

Restrictions and guidelines

If a remote VTEP uses the Ethernet access mode, its VXLAN packets might contain 802.1Q VLAN tags. To prevent the local VTEP from dropping the VXLAN packets, do not execute the vxlan invalid-vlan-tag discard command on the local VTEP.

The access mode is configurable by using the xconnect vsi command.

Procedure

1.     Enter system view.

system-view

2.     Enable the VTEP to drop VXLAN packets that fail UDP checksum check.

vxlan invalid-udp-checksum discard

By default, the VTEP does not check the UDP checksum of VXLAN packets.

3.     Enable the VTEP to drop VXLAN packets that have 802.1Q VLAN tags in the inner Ethernet header.

vxlan invalid-vlan-tag discard

By default, the VTEP does not check the inner Ethernet header for 802.1Q VLAN tags.

Enabling default VXLAN decapsulation

About default VXLAN decapsulation

If a VXLAN tunnel is configured on only one VTEP of a pair of VTEPs, the VXLAN tunnel is a unidirectional tunnel to the VTEP not configured with the tunnel. In this situation, that VTEP drops the VXLAN packets received from the unidirectional VXLAN tunnel. For a VTEP to receive VXLAN packets from a unidirectional VXLAN tunnel, enable default VXLAN decapsulation on the interface whose IP address is the tunnel destination address. The VTEP will decapsulate all the VXLAN packets destined for the IP address of that interface.

Restrictions and guidelines

This feature takes effect only when the specified interface has an IP address.

The IP address of the interface you specify in this task must meet the following requirements:

·     It is the destination address of a unidirectional VXLAN tunnel.

·     It is the source address of a minimum of one up VXLAN tunnel.

Default VXLAN decapsulation does not take effect on bidirectional VXLAN tunnels. If you remove the one-way communication issue for a VXLAN tunnel by configuring the tunnel on both the local and remote VTEPs, this feature no longer takes effect on that tunnel.

Procedure

1.     Enter system view.

system-view

2.     Enable default VXLAN decapsulation.

vxlan default-decapsulation source interface interface-type interface-number

By default, default VXLAN decapsulation is disabled.

Disabling flooding for a VSI

About VSI flooding

By default, the VTEP floods broadcast, unknown unicast, and unknown multicast frames received from the local site to the following interfaces in the frame's VXLAN:

·     All site-facing interfaces except for the incoming interface.

·     All VXLAN tunnel interfaces.

When receiving broadcast, unknown unicast, and unknown multicast frames on VXLAN tunnel interfaces, the device floods the frames to all site-facing interfaces in the frames' VXLAN.

To confine a kind of flood traffic, disable flooding for that kind of flood traffic on the VSI bound to the VXLAN.

To exclude a remote MAC address from the remote flood suppression done by using this feature, enable selective flood for the MAC address. The VTEP will flood the frames destined for the MAC address to remote sites.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Disable flooding for the VSI.

flooding disable { all | { broadcast | unknown-multicast | unknown-unicast } * } [ all-direction | dci ]

By default, flooding is enabled for a VSI.

If VXLAN-DCI is configured, flood traffic is also sent out of VXLAN-DCI tunnel interfaces. To confine flood traffic to the site-facing interfaces and VXLAN tunnels within a data center, you can specify the dci keyword to disable flooding only to VXLAN-DCI tunnel interfaces.

The all-direction keyword disables flooding traffic received from an AC or VXLAN tunnel interface to any other ACs and VXLAN tunnel interfaces of the same VSI. If VXLAN-DCI is configured, this keyword also disables flooding between VXLAN tunnel interfaces and VXLAN-DCI tunnel interfaces.

4.     (Optional.) Enable selective flood for a MAC address.

selective-flooding mac-address mac-address

Confining the flood traffic of an Ethernet service instance

About flood traffic confining for Ethernet service instances

By default, an Ethernet service instance sends flood traffic to the other Ethernet service instances of the same VSI. To prevent broadcast storms, you can disable an Ethernet service instance from flooding traffic to the other Ethernet service instances of the same VSI on the local port.

Procedure

1.     Enter system view.

system-view

2.     Enter interface view.

¡     Enter Layer 2 Ethernet interface view.

interface interface-type interface-number

¡     Enter Layer 2 aggregate interface view.

interface bridge-aggregation interface-number

3.     Enter Ethernet service instance view.

service-instance instance-id

4.     Confine the flood traffic of the Ethernet service instance.

flooding disable source-port

By default, an Ethernet service instance sends flood traffic to the other Ethernet service instances of the same VSI.

Enabling ARP flood suppression

Restrictions and guidelines

The aging timer is fixed at 25 minutes for ARP flood suppression entries. If the suppression table is full, the VTEP stops learning new entries. For the VTEP to learn new entries, you must wait for old entries to age out, or use the reset arp suppression vsi command to clear the table.

If the flooding disable command is configured, set the MAC aging timer to a higher value than the aging timer for ARP flood suppression entries on all VTEPs. This setting prevents the traffic blackhole that occurs when a MAC address entry ages out before its ARP flood suppression entry ages out. To set the MAC aging timer, use the mac-address timer command.

When remote ARP learning is disabled for VXLANs, the device does not use ARP flood suppression entries to respond to ARP requests received on VXLAN tunnels.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Enable ARP flood suppression.

arp suppression enable

By default, ARP flood suppression is disabled.

Enabling ND flood suppression

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Enable ND flood suppression.

ipv6 nd suppression enable

By default, ND flood suppression is disabled.

Enabling VXLAN packet statistics

Enabling packet statistics for a VSI

Restrictions and guidelines

To display the packet statistics for a VSI, use the display l2vpn vsi verbose command in any view.

To clear the packet statistics for a VSI, use the reset l2vpn statistics vsi command in user view.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Enable packet statistics for the VSI.

statistics enable

By default, the packet statistics feature is disabled for all VSIs.

Enabling packet statistics for an AC

Restrictions and guidelines

For the statistics enable command to take effect on an Ethernet service instance, you must configure a frame match criterion for the Ethernet service instance and map it to a VSI. When you modify the frame match criterion or VSI mapping, the packet statistics of the instance are cleared.

Enabling packet statistics for an Ethernet service instance

1.     Enter system view.

system-view

2.     Enter interface view.

¡     Enter Layer 2 Ethernet interface view.

interface interface-type interface-number

¡     Enter Layer 2 aggregate interface view.

interface bridge-aggregation interface-number

3.     Enter Ethernet service instance view.

service-instance instance-id

4.     Enable packet statistics for the Ethernet service instance.

statistics enable

By default, the packet statistics feature is disabled for all Ethernet service instances.

Enabling packet statistics for Ethernet service instances of a VLAN

1.     Enter system view.

system-view

2.     Enter VLAN view.

vlan vlan-id

3.     Enable packet statistics for Ethernet service instances of the VLAN.

ac statistics enable

By default, packet statistics are disabled for Ethernet service instances of a VLAN.

This feature enables packet statistics for the Ethernet service instances that are automatically created for VLAN-based VXLAN assignment. Before you enable this feature, you must use the vxlan vlan-based command to enable VLAN-based VXLAN assignment.

Enabling packet statistics for VXLAN tunnels

About packet statistics of VXLAN tunnels

VXLAN tunnels can be manually or automatically created. For manually created VXLAN tunnels, you can enable packet statistics on a per-tunnel interface basis. For automatically created VXLAN tunnels, you can enable packet statistics globally in system view.

To display the packet statistics for a VXLAN tunnel, use the display interface tunnel command in any view.

To clear the packet statistics for a VXLAN tunnel, use the reset counters interface tunnel command in user view.

Enabling packet statistics for a manually created VXLAN tunnel

1.     Enter system view.

system-view

2.     Enter VXLAN tunnel interface view.

interface tunnel tunnel-number [ mode vxlan ]

3.     Enable packet statistics for the tunnel.

statistics enable

By default, the packet statistics feature is disabled for manually created VXLAN tunnels.

Enabling packet statistics for automatically created VXLAN tunnels

1.     Enter system view.

system-view

2.     Enable packet statistics for automatically created VXLAN tunnels.

tunnel statistics vxlan auto [ destination ipv4-address ]

By default, the packet statistics feature is disabled for automatically created VXLAN tunnels.

This command enables the device to collect packet statistics for VXLAN tunnels that are automatically created by EVPN or OVSDB. For more information about EVPN, see EVPN Configuration Guide. For more information about OVSDB, see "Configuring the VTEP as an OVSDB VTEP."

Testing the reachability of a remote VM

About testing the reachability of remote VMs

This feature enables the device to test the reachability of a remote VM by simulating a local VM to send ICMP echo requests. The requests are encapsulated in Layer 2 data frames and then sent to the remote VM in the specified VXLAN. The device determines the reachability of the remote VM based on the response time and the number of received ICMP echo replies.

Restrictions and guidelines

This feature is not supported if EVPN distributed relay is configured on the device. For more information about EVPN distributed relay, see EVPN Configuration Guide.

Procedure

Execute the following command in any view to test the reachability of a remote VM:

emulate-ping vxlan [ -c count | -m interval | -s packet-size | -t time-out ] * vxlan-id vxlan-id source-mac mac-address destination-mac mac-address

Display and maintenance commands for VXLANs

Execute display commands in any view and reset commands in user view.

 

Task

Command

Display ARP flood suppression entries on VSIs.

display arp suppression vsi [ name vsi-name ] [ slot slot-number ] [ count ]

Display the VXLAN hardware resource mode.

display hardware-resource [ vxlan ]

Display information about the multicast groups that contain IGMP host-enabled interfaces.

display igmp host group [ group-address | interface interface-type interface-number ] [ verbose ]

Display information about tunnel interfaces.

display interface [ tunnel [ number ] ] [ brief [ description | down ] ]

Display ND flood suppression entries.

display ipv6 nd suppression vsi [ name vsi-name ] [ slot slot-number ] [ count ]

Display MAC address entries for VSIs.

display l2vpn mac-address [ vsi vsi-name ] [ dynamic ] [ count | verbose ]

Display information about Ethernet service instances.

display l2vpn service-instance [ interface interface-type interface-number [ service-instance instance-id ] ] [ verbose ]

Display information about VSIs.

display l2vpn vsi [ name vsi-name ] [ verbose ]

Display VXLAN tunnel information for VXLANs.

display vxlan tunnel [ vxlan vxlan-id ]

Clear ARP flood suppression entries on VSIs.

reset arp suppression vsi [ name vsi-name ]

Clear ND flood suppression entries on VSIs.

reset ipv6 nd suppression vsi [ name vsi-name ]

Clear dynamic MAC address entries on VSIs.

reset l2vpn mac-address [ vsi vsi-name ]

Clear packet statistics on ACs.

reset l2vpn statistics ac [ interface interface-type interface-number [ service-instance instance-id ] ]

Clear packet statistics on VSIs.

reset l2vpn statistics vsi [ name vsi-name ]

 

 

NOTE:

For more information about the display interface tunnel command, see tunneling commands in Layer 3—IP Services Command Reference.

 

VXLAN configuration examples

Example: Configuring a unicast-mode VXLAN

Network configuration

As shown in Figure 10:

·     Configure VXLAN 10 as a unicast-mode VXLAN on Switch A, Switch B, and Switch C to provide Layer 2 connectivity for the VMs across the network sites.

·     Manually establish VXLAN tunnels and assign the tunnels to VXLAN 10.

·     Enable remote-MAC address learning.

Figure 10 Network diagram

Procedure

 

1.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

2.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 10. (Details not shown.)

# Configure OSPF on all transport network switches (Switches A through D). (Details not shown.)

3.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch B and Switch C.

[SwitchA] interface loopback 0

[SwitchA-Loopback0] ip address 1.1.1.1 255.255.255.255

[SwitchA-Loopback0] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 1.

[SwitchA] interface tunnel 1 mode vxlan

[SwitchA-Tunnel1] source 1.1.1.1

[SwitchA-Tunnel1] destination 2.2.2.2

[SwitchA-Tunnel1] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 2.

[SwitchA] interface tunnel 2 mode vxlan

[SwitchA-Tunnel2] source 1.1.1.1

[SwitchA-Tunnel2] destination 3.3.3.3

[SwitchA-Tunnel2] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] tunnel 1

[SwitchA-vsi-vpna-vxlan-10] tunnel 2

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchA-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchA-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/1] quit

4.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch A and Switch C.

[SwitchB] interface loopback 0

[SwitchB-Loopback0] ip address 2.2.2.2 255.255.255.255

[SwitchB-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 2.

[SwitchB] interface tunnel 2 mode vxlan

[SwitchB-Tunnel2] source 2.2.2.2

[SwitchB-Tunnel2] destination 1.1.1.1

[SwitchB-Tunnel2] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 3.

[SwitchB] interface tunnel 3 mode vxlan

[SwitchB-Tunnel3] source 2.2.2.2

[SwitchB-Tunnel3] destination 3.3.3.3

[SwitchB-Tunnel3] quit

# Assign Tunnel 2 and Tunnel 3 to VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] tunnel 2

[SwitchB-vsi-vpna-vxlan-10] tunnel 3

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchB] interface twenty-fivegige 1/0/1

[SwitchB-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchB-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchB-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchB-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchB-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchB-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchB-Twenty-FiveGigE1/0/1] quit

5.     Configure Switch C:

# Enable L2VPN.

<SwitchC> system-view

[SwitchC] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch A and Switch B.

[SwitchC] interface loopback 0

[SwitchC-Loopback0] ip address 3.3.3.3 255.255.255.255

[SwitchC-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 1.

[SwitchC] interface tunnel 1 mode vxlan

[SwitchC-Tunnel1] source 3.3.3.3

[SwitchC-Tunnel1] destination 1.1.1.1

[SwitchC-Tunnel1] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 3.

[SwitchC] interface tunnel 3 mode vxlan

[SwitchC-Tunnel3] source 3.3.3.3

[SwitchC-Tunnel3] destination 2.2.2.2

[SwitchC-Tunnel3] quit

# Assign Tunnel 1 and Tunnel 3 to VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] tunnel 1

[SwitchC-vsi-vpna-vxlan-10] tunnel 3

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchC] interface twenty-fivegige 1/0/1

[SwitchC-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchC-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchC-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchC-Twenty-FiveGigE1/0/1] quit

Verifying the configuration

1.     Verify the VXLAN settings on the VTEPs. This example uses Switch A.

# Verify that the VXLAN tunnel interfaces on the VTEP are up.

[SwitchA] display interface tunnel 1

Tunnel1

Current state: UP

Line protocol state: UP

Description: Tunnel1 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 1.1.1.1, destination 2.2.2.2

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that the VXLAN tunnels have been assigned to the VXLAN.

[SwitchA] display l2vpn vsi verbose

VSI Name: vpna

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

  ACs:

    AC                               Link ID    State    Type

    WGE1/0/1 srv1000                 0          Up       Manual

# Verify that the VTEP has learned the MAC addresses of remote VMs.

<SwitchA> display l2vpn mac-address

MAC Address    State     VSI Name                        Link ID/Name   Aging

cc3e-5f9c-6cdb Dynamic   vpna                            Tunnel1        Aging

cc3e-5f9c-23dc Dynamic   vpna                            Tunnel2        Aging

--- 2 mac address(es) found  ---

2.     Verify that VM 1, VM 2, and VM 3 can ping each other. (Details not shown.)

Example: Configuring a multicast-mode VXLAN

Network configuration

As shown in Figure 11:

·     Configure VXLAN 10 as a multicast-mode VXLAN on Switch A, Switch B, and Switch C to provide Layer 2 connectivity for the VMs across the network sites.

·     Manually establish VXLAN tunnels and assign the tunnels to VXLAN 10.

·     Enable remote-MAC address learning.

Figure 11 Network diagram

Table 1 IP address assignment

Device

Interface

IP address

Device

Interface

IP address

Switch A:

 

 

Switch C:

 

 

 

VLAN-interface 11

11.1.1.1/24

 

VLAN-interface 13

13.1.1.3/24

Switch D:

 

 

Switch E:

 

 

 

VLAN-interface 11

11.1.1.4/24

 

VLAN-interface 13

13.1.1.5/24

 

VLAN-interface 21

21.1.1.4/24

 

VLAN-interface 23

23.1.1.5/24

Switch F:

 

 

Switch G:

 

 

 

VLAN-interface 21

21.1.1.6/24

 

VLAN-interface 12

12.1.1.7/24

 

VLAN-interface 22

22.1.1.6/24

 

VLAN-interface 22

22.1.1.7/24

 

VLAN-interface 23

23.1.1.6/24

Switch B:

 

 

 

Loop 0

6.6.6.6/32

 

VLAN-interface 12

12.1.1.2/24

 

Procedure

 

1.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

2.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 11. (Details not shown.)

# Configure OSPF on all transport network switches (Switches A through G). (Details not shown.)

3.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Enable IP multicast routing.

[SwitchA] multicast routing

[SwitchA-mrib] quit

# Create VSI vpna and VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Assign an IP address to VLAN-interface 11, and enable the IGMP host feature on the interface. This interface's IP address will be the source IP address of VXLAN packets sent by the VTEP.

[SwitchA] interface vlan-interface 11

[SwitchA-Vlan-interface11] ip address 11.1.1.1 24

[SwitchA-Vlan-interface11] igmp host enable

[SwitchA-Vlan-interface11] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 1.

[SwitchA] interface tunnel 1 mode vxlan

[SwitchA-Tunnel1] source 11.1.1.1

[SwitchA-Tunnel1] destination 12.1.1.2

[SwitchA-Tunnel1] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 2.

[SwitchA] interface tunnel 2 mode vxlan

[SwitchA-Tunnel2] source 11.1.1.1

[SwitchA-Tunnel2] destination 13.1.1.3

[SwitchA-Tunnel2] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] tunnel 1

[SwitchA-vsi-vpna-vxlan-10] tunnel 2

# Configure the multicast group address and source IP address for multicast VXLAN packets.

[SwitchA-vsi-vpna-vxlan-10] group 225.1.1.1 source 11.1.1.1

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchA-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchA-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/1] quit

4.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Enable IP multicast routing.

[SwitchB] multicast routing

[SwitchB-mrib] quit

# Create VSI vpna and VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Assign an IP address to VLAN-interface 12, and enable the IGMP host feature on the interface. This interface's IP address will be the source IP address of VXLAN packets sent by the VTEP.

[SwitchB] interface vlan-interface 12

[SwitchB-Vlan-interface12] ip address 12.1.1.2 24

[SwitchB-Vlan-interface12] igmp host enable

[SwitchB-Vlan-interface12] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 2.

[SwitchB] interface tunnel 2 mode vxlan

[SwitchB-Tunnel2] source 12.1.1.2

[SwitchB-Tunnel2] destination 11.1.1.1

[SwitchB-Tunnel2] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 3.

[SwitchB] interface tunnel 3 mode vxlan

[SwitchB-Tunnel3] source 12.1.1.2

[SwitchB-Tunnel3] destination 13.1.1.3

[SwitchB-Tunnel3] quit

# Assign Tunnel 2 and Tunnel 3 to VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] tunnel 2

[SwitchB-vsi-vpna-vxlan-10] tunnel 3

# Configure the VXLAN multicast group address and the source IP address for VXLAN packets.

[SwitchB-vsi-vpna-vxlan-10] group 225.1.1.1 source 12.1.1.2

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchB] interface twenty-fivegige 1/0/1

[SwitchB-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchB-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchB-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchB-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchB-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchB-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchB-Twenty-FiveGigE1/0/1] quit

5.     Configure Switch C:

# Enable L2VPN.

<SwitchC> system-view

[SwitchC] l2vpn enable

# Enable IP multicast routing.

[SwitchC] multicast routing

[SwitchC-mrib] quit

# Create VSI vpna and VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Assign an IP address to VLAN-interface 13, and enable the IGMP host feature on the interface. This interface's IP address will be the source IP address of VXLAN packets sent by the VTEP.

[SwitchC] interface vlan-interface 13

[SwitchC-Vlan-interface13] ip address 13.1.1.3 24

[SwitchC-Vlan-interface13] igmp host enable

[SwitchC-Vlan-interface13] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 1.

[SwitchC] interface tunnel 1 mode vxlan

[SwitchC-Tunnel1] source 13.1.1.3

[SwitchC-Tunnel1] destination 11.1.1.1

[SwitchC-Tunnel1] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 3.

[SwitchC] interface tunnel 3 mode vxlan

[SwitchC-Tunnel3] source 13.1.1.3

[SwitchC-Tunnel3] destination 12.1.1.2

[SwitchC-Tunnel3] quit

# Assign Tunnel 1 and Tunnel 3 to VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] tunnel 1

[SwitchC-vsi-vpna-vxlan-10] tunnel 3

# Configure the multicast group address and source IP address for VXLAN multicast packets.

[SwitchC-vsi-vpna-vxlan-10] group 225.1.1.1 source 13.1.1.3

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchC] interface twenty-fivegige 1/0/1

[SwitchC-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchC-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchC-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchC-Twenty-FiveGigE1/0/1] quit

6.     Configure Switch D:

# Enable IP multicast routing.

<SwitchD> system-view

[SwitchD] multicast routing

[SwitchD-mrib] quit

# Enable IGMP and PIM-SM on VLAN-interface 11.

[SwitchD] interface vlan-interface 11

[SwitchD-Vlan-interface11] igmp enable

[SwitchD-Vlan-interface11] pim sm

[SwitchD-Vlan-interface11] quit

# Enable PIM-SM on VLAN-interface 21.

[SwitchD] interface vlan-interface 21

[SwitchD-Vlan-interface21] pim sm

[SwitchD-Vlan-interface21] quit

# Enable BIDIR-PIM.

[SwitchD] pim

[SwitchD-pim] bidir-pim enable

[SwitchD-pim] quit

7.     Configure Switch E:

# Enable IP multicast routing.

<SwitchE> system-view

[SwitchE] multicast routing

[SwitchE-mrib] quit

# Enable IGMP and PIM-SM on VLAN-interface 13.

[SwitchE] interface vlan-interface 13

[SwitchE-Vlan-interface13] igmp enable

[SwitchE-Vlan-interface13] pim sm

[SwitchE-Vlan-interface13] quit

# Enable PIM-SM on VLAN-interface 23.

[SwitchE] interface vlan-interface 23

[SwitchE-Vlan-interface23] pim sm

[SwitchE-Vlan-interface23] quit

# Enable BIDIR-PIM.

[SwitchE] pim

[SwitchE-pim] bidir-pim enable

[SwitchE-pim] quit

8.     Configure Switch F:

# Enable IP multicast routing.

<SwitchF> system-view

[SwitchF] multicast routing

[SwitchF-mrib] quit

# Enable PIM-SM on VLAN-interface 21, VLAN-interface 22, VLAN-interface 23, and Loopback 0.

[SwitchF] interface vlan-interface 21

[SwitchF-Vlan-interface21] pim sm

[SwitchF-Vlan-interface21] quit

[SwitchF] interface vlan-interface 22

[SwitchF-Vlan-interface22] pim sm

[SwitchF-Vlan-interface22] quit

[SwitchF] interface vlan-interface 23

[SwitchF-Vlan-interface23] pim sm

[SwitchF-Vlan-interface23] quit

[SwitchF] interface loopback 0

[SwitchF-LoopBack0] pim sm

[SwitchF-LoopBack0] quit

# Enable BIDIR-PIM.

[SwitchF] pim

[SwitchF-pim] bidir-pim enable

# Configure VLAN-interface 22 as a candidate-BSR, and configure Loopback 0 as a candidate-RP for BIDIR-PIM.

[SwitchF-pim] c-bsr 22.1.1.6

[SwitchF-pim] c-rp 6.6.6.6 bidir

[SwitchF-pim] quit

9.     Configure Switch G:

# Enable IP multicast routing.

<SwitchG> system-view

[SwitchG] multicast routing

[SwitchG-mrib] quit

# Enable IGMP and PIM-SM on VLAN-interface 12.

[SwitchG] interface vlan-interface 12

[SwitchG-Vlan-interface12] igmp enable

[SwitchG-Vlan-interface12] pim sm

[SwitchG-Vlan-interface12] quit

# Enable PIM-SM on VLAN-interface 22.

[SwitchG] interface vlan-interface 22

[SwitchG-Vlan-interface22] pim sm

[SwitchG-Vlan-interface22] quit

# Enable BIDIR-PIM.

[SwitchG] pim

[SwitchG-pim] bidir-pim enable

[SwitchG-pim] quit

Verifying the configuration

1.     Verify the VXLAN settings on the VTEPs. This example uses Switch A.

# Verify that the VXLAN tunnel interfaces on the VTEP are up.

[SwitchA] display interface tunnel 1

Tunnel1

Current state: UP

Line protocol state: UP

Description: Tunnel1 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 11.1.1.1, destination 12.1.1.2

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that the VXLAN tunnels have been assigned to the VXLAN.

[SwitchA] display l2vpn vsi verbose

VSI Name: vpna

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

    MTunnel0             0x6000000  Up     Auto        Disabled

  ACs:

    AC                               Link ID    State    Type

    WGE1/0/1 srv1000                 0          Up       Manual

# Verify that the VTEP has learned the MAC addresses of remote VMs.

<SwitchA> display l2vpn mac-address

MAC Address    State     VSI Name                        Link ID/Name   Aging

cc3e-5f9c-6cdb Dynamic   vpna                            Tunnel1        Aging

cc3e-5f9c-23dc Dynamic   vpna                            Tunnel2        Aging

--- 2 mac address(es) found  ---

# Verify that the VTEP has joined the VXLAN multicast group on VLAN-interface 11.

<SwitchA> display igmp host group

IGMP host groups in total: 1

 Vlan-interface11(11.1.1.1):

  IGMP host groups in total: 1

   Group address      Member state      Expires

   225.1.1.1          Idle              Off

2.     Verify that VM 1, VM 2, and VM 3 can ping each other. (Details not shown.)


Configuring VXLAN IP gateways

About VXLAN IP gateways

The following are available IP gateway placement designs for VXLANs:

·     VXLAN IP gateways separated from VTEPs—Use a VXLAN-unaware device as a gateway to the external network for VXLANs. On the gateway, you do not need to configure VXLAN settings.

·     VXLAN IP gateways collocated with VTEPs—Include the following placement designs:

¡     Centralized VXLAN IP gateway deployment—Use one VTEP to provide Layer 3 forwarding for VXLANs. Typically, the gateway-collocated VTEP connects to other VTEPs and the external network. To use this design, make sure the IP gateway has sufficient bandwidth and processing capability.

¡     Centralized VXLAN gateway group deployment—Use one VTEP group that contains redundant centralized VXLAN IP gateways to provide reliable gateway services for VXLANs.

¡     Distributed VXLAN IP gateway deployment—Deploy one VXLAN IP gateway on each VTEP to provide Layer 3 forwarding for VXLANs at their respective sites. This design distributes the Layer 3 traffic load across VTEPs. However, its configuration is more complex than the centralized VXLAN IP gateway design.

In a collocation design, the VTEPs use virtual Layer 3 VSI interfaces as gateway interfaces to provide services for VXLANs.

VXLAN IP gateways separated from VTEPs

As shown in Figure 12, an independent VXLAN IP gateway connects a Layer 3 network to a VTEP. VMs send Layer 3 traffic in Layer 2 frames to the gateway through VXLAN tunnels. When the tunneled VXLAN packets arrive, the VTEP terminates the VXLANs and forwards the inner frames to the gateway. In this gateway placement design, the VTEP does not perform Layer 3 forwarding for VXLANs.

Figure 12 VXLAN IP gateway separated from VTEPs

 

Centralized VXLAN IP gateway deployment

As shown in Figure 13, a VTEP acts as a gateway for VMs in the VXLANs. The VTEP both terminates the VXLANs and performs Layer 3 forwarding for the VMs.

Figure 13 Centralized VXLAN IP gateway placement design

 

As shown in Figure 14, the network uses the following process to forward Layer 3 traffic from VM 10.1.1.11 to the Layer 3 network:

1.     The VM sends an ARP request to obtain the MAC address of the gateway (VTEP 3) at 10.1.1.1.

2.     VTEP 1 floods the ARP request to all remote VTEPs.

3.     VTEP 3 de-encapsulates the ARP request, creates an ARP entry for the VM, and sends an ARP reply to the VM.

4.     VTEP 1 forwards the ARP reply to the VM.

5.     The VM learns the MAC address of the gateway, and sends the Layer 3 traffic to the gateway.

6.     VTEP 3 removes the VXLAN encapsulation and inner Ethernet header for the traffic, and forwards the traffic to the destination node.

Inter-VXLAN forwarding is the same as this process except for the last step. At the last step of inter-VLAN forwarding, the gateway replaces the source-VXLAN encapsulation with the destination-VXLAN encapsulation, and then forwards the traffic.

Figure 14 Example of centralized VXLAN IP gateway deployment

 

Centralized VXLAN gateway group deployment

As shown in Figure 15, a VTEP group uses redundant centralized VXLAN IP gateways to provide reliable gateway services for VMs in the VXLANs. All member VTEPs in the group participate in Layer 3 forwarding and load share traffic between the Layer 3 network and the VXLANs. This design distributes processing among multiple VTEPs and prevents single points of failure.

Figure 15 Example of centralized VXLAN IP gateway group deployment

 

The VTEP group is a virtual gateway that provides services at a group IP address. Access layer VTEPs set up VXLAN tunnels to the group IP address for data traffic forwarding. Each access layer VTEP also automatically sets up tunnels to the member IP addresses of VTEPs in the VTEP group. These tunnels are used for transmitting broadcast, multicast, and unknown unicast floods, so that all VTEPs in the VTEP group have consistent forwarding entries.

Distributed VXLAN IP gateway deployment

About distributed VXLAN IP gateway deployment

As shown in Figure 16, each site's VTEP acts as a gateway to perform Layer 3 forwarding for the VXLANs of the local site. A VTEP acts as a border gateway to the Layer 3 network for the VXLANs.

Figure 16 Distributed VXLAN IP gateway placement design

 

Figure 17 shows an example of distributed VXLAN IP gateway deployment. Create VSI interfaces on each distributed VXLAN IP gateway and the border gateway as gateway interfaces. Assign the same IP address to the same VSI interface on the distributed VXLAN IP gateways. Enable one of the following features on a distributed VXLAN IP gateway:

·     ARP flood suppression. The gateway performs Layer 2 forwarding based on MAC address entries and performs Layer 3 forwarding based on ARP entries.

·     Local proxy ARP or local ND proxy. The gateway performs Layer 3 forwarding based on ARP or ND entries. The following sections use distributed VXLAN IP gateways enabled with the local proxy ARP or local ND proxy feature to describe the forwarding processes for intra-VXLAN traffic, inter-VXLAN traffic, and traffic from a VXLAN to an external network.

A distributed VXLAN IP gateway can generate ARP or ND entries by a variety of methods. The following sections use dynamically learned ARP or ND entries to describe the forwarding processes.

Figure 17 Example of distributed VXLAN IP gateway deployment

 

Intra-VXLAN traffic forwarding between sites

As shown in Figure 17, the network uses the following process to forward traffic in a VXLAN between sites (for example, from VM 1 to VM 4 in VXLAN 10):

1.     VM 1 sends an ARP request to obtain the MAC address of VM 4.

2.     GW 1 performs the following operations:

a.     Creates an ARP entry for VM 1 and replies with the MAC address of VSI-interface 10 (the gateway interface for VXLAN 10).

b.     Replaces the sender MAC address of the ARP request with the MAC address of VSI-interface 10, and then floods the request to all sites in VXLAN 10.

3.     VM 1 creates an ARP entry for VM 4. The MAC address in the entry is the MAC address of VSI-interface 10 on GW 1.

4.     GW 2 (the VTEP for VM 4) performs the following operations:

a.     De-encapsulates the ARP request and creates an ARP entry for VM 1. The entry contains VM 1's IP address (10.1.1.11), the MAC address of VSI-interface 10 on GW 1, and the incoming tunnel interface.

b.     Replaces the sender MAC address of the request with the MAC address of VSI-interface 10 on GW 2, and then floods the request to the local site in VXLAN 10.

5.     VM 4 creates an ARP entry for VM 1, and then sends a reply to GW 2. The MAC address in the ARP entry is the MAC address of VSI-interface 10 on GW 2.

6.     GW 2 performs the following operations:

a.     Creates an ARP entry for VM 4.

b.     Replaces the sender MAC address of the reply with the MAC address of VSI-interface 10 on GW 2, and sends the reply to GW 1.

7.     GW 1 de-encapsulates the ARP reply and creates an ARP entry for VM 4. The entry contains VM 4's IP address (10.1.1.12), the MAC address of VSI-interface 10 on GW 2, and the incoming tunnel interface.

8.     For subsequent traffic between VM 1 and VM 4, GW 1 and GW 2 use their respective ARP tables to make the forwarding decision.

Inter-VXLAN traffic forwarding between sites

As shown in Figure 18, the network uses the following process to forward traffic between VXLANs (for example, from VM 1 in VXLAN 10 to VM 5 in VXLAN 20):

1.     VM 1 sends an ARP request to obtain the MAC address of the gateway at 10.1.1.1.

2.     GW 1 creates an ARP entry for VM 1 and replies with the MAC address of VSI-interface 10 (the gateway interface for VXLAN 10) so VM 1 will send the packets destined for VM 5 to GW 1.

3.     GW 1 sends an ARP request to the local and remote sites in VXLAN 10. In the ARP request, the sender IP address is 10.1.1.11, and the sender MAC address is the MAC address of VSI-interface 10 on GW 1.

4.     GW 2 performs the following operations:

a.     De-encapsulates the ARP request and creates an ARP entry for VM 1. The entry contains IP address 10.1.1.11 and MAC address of VSI-interface 10 on GW 1, and the incoming tunnel interface.

b.     Replaces the sender MAC address of the request with the MAC address of VSI-interface 10 on GW 2, and then floods the request to the local site in VXLAN 10.

c.     Sends an ARP reply to GW 1. The reply contains IP address 10.1.1.1 and MAC address of VSI-interface 10 on GW 2).

5.     When sending an ARP request in VXLAN 10, GW 1 also sends an ARP request to the local and remote sites in VXLAN 20 to obtain the MAC address of VM 5. In the ARP request, the sender IP address is 20.1.1.1, and the sender MAC address is the MAC address of VSI-interface 20 on GW 1.

6.     GW 2 de-encapsulates the ARP request of VXLAN 20, replaces the sender MAC address of the request with the MAC address of VSI-interface 20 on GW 2, and then floods the request to the local site in VXLAN 20.

7.     VM 5 creates an ARP entry for GW 2, and then sends a reply to GW 2. The entry contains IP address 20.1.1.1 and MAC address of VSI-interface 20 on GW 2.

8.     GW 2 performs the following operations:

a.     Creates an ARP entry for VM 5.

b.     Sends a gratuitous ARP packet to the local and remote sites. In the packet, the sender IP address is 20.1.1.12, and the sender MAC address is the MAC address of VSI-interface 20 on GW 2.

9.     GW 1 de-encapsulates the gratuitous ARP packet and creates an ARP entry for VM 5. The entry contains VM 5's IP address 20.1.1.12, the MAC address of VSI-interface 20 on GW 2, and the incoming tunnel interface.

10.     For subsequent traffic between VM 1 and VM 5, GW 1 and GW 2 use their respective ARP tables to make the forwarding decision.

Figure 18 Inter-VXLAN traffic forwarding between sites

VXLAN-to-external network traffic forwarding

As shown in Figure 17, the network uses the following process to forward traffic from a VXLAN to the Layer 3 network (for example, from VM 1 to the host at 50.1.1.1):

1.     VM 1 sends an ARP request to obtain the MAC address of the gateway at 10.1.1.1.

2.     GW 1 creates an ARP entry for VM 1 and replies with the MAC address of VSI-interface 10 (the gateway interface for VXLAN 10).

3.     VM 1 sends a packet destined for the host to GW 1.

4.     GW 1 performs the following operations:

a.     Searches the IP routing policies or routing table for the next hop. In this example, the next hop for the packet is 10.1.1.2 (the border gateway).

b.     Floods an ARP request to the local and remote sites in VXLAN 10 to obtain the MAC address of 10.1.1.2.

5.     The border gateway de-encapsulates the ARP request, creates an ARP entry for GW 1, and tunnels a reply to GW 1.

6.     GW 1 de-encapsulates the ARP reply and creates an ARP entry for 10.1.1.2.

7.     GW 1 sends the packet destined for the host to the border gateway.

8.     The border gateway de-encapsulates the packet and forwards it to the host.

Restrictions and guidelines: VXLAN IP gateway configuration

Do not configure both centralized VXLAN IP gateway settings and centralized VXLAN IP gateway group settings on a device.

VXLAN IP gateway tasks at a glance

To configure a VXLAN IP gateway, perform the following tasks:

1.     Configure a VXLAN IP gateway

Choose one of the following tasks:

¡     Configuring a centralized VXLAN IP gateway

¡     Configuring a centralized VXLAN IP gateway group

¡     Configuring a distributed VXLAN IP gateway

2.     (Optional.) Managing ARP entries and ND entries

3.     (Optional.) Configuring a VSI interface

Prerequisites for VXLAN IP gateway configuration

Before you configure a centralized or distributed VXLAN IP gateway, you must perform the following tasks on VTEPs:

·     Set the VXLAN hardware resource mode to Layer 3 gateway.

·     Create VSIs and VXLANs.

·     Configure VXLAN tunnels and assign them to VXLANs.

Configuring a centralized VXLAN IP gateway

Restrictions and guidelines

Do not execute the local-proxy-arp enable command on a centralized VXLAN IP gateway.

Configuring a gateway interface on a centralized VXLAN IP gateway

1.     Enter system view.

system-view

2.     Create a VSI interface and enter VSI interface view.

interface vsi-interface vsi-interface-id

3.     Assign an IP address to the VSI interface.

ip address ipv4-address { mask | mask-length }

By default, no IP address is assigned to a VSI interface.

4.     Return to system view.

quit

5.     Enter VSI view.

vsi vsi-name

6.     Specify a gateway interface for the VSI.

gateway vsi-interface vsi-interface-id

By default, no gateway interface is specified for a VSI.

Assigning a subnet to a VSI

About subnet assignment to a VSI

Perform this task on VSIs that share a gateway interface. This task enables the VSI interface to identify the VSI of a packet.

You can assign a maximum of eight IPv4 subnets to a VSI. Make sure these subnets are on the same network as one of the IP addresses on the gateway interface.

For VSIs that share a gateway interface, the subnets must be unique.

If you remove the gateway interface from the VSI, the VSI's subnet settings are automatically deleted.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Assign a subnet to the VSI.

gateway subnet ipv4-address wildcard-mask

By default, no subnet exists on a VSI.

Configuring a centralized VXLAN IP gateway group

Configuring a VTEP group

Restrictions and guidelines

Make sure the member VTEPs use the same VXLAN settings.

Procedure

1.     Enter system view.

system-view

2.     Create a VSI interface and enter VSI interface view.

interface vsi-interface vsi-interface-id

This interface will be used as the gateway interface for the VSI.

3.     Assign an IP address to the VSI interface.

ip address ipv4-address { mask | mask-length }

By default, no IP address is assigned to a VSI interface.

You must assign the same IP address to the VSI interface on each VTEP in the VTEP group.

4.     Assign a MAC address to the VSI interface.

mac-address mac-address

By default, the MAC address of VSI interfaces is the subsequent higher MAC address of VLAN-interface 4094's MAC address.

You must assign the same MAC address to the VSI interface on each VTEP in the VTEP group.

5.     Return to system view.

quit

6.     Enter VSI view.

vsi vsi-name

7.     Specify the VSI interface as the gateway interface for the VSI.

gateway vsi-interface vsi-interface-id

By default, no gateway interface is specified for a VSI.

8.     Return to system view.

quit

9.     Assign the local VTEP to a VTEP group and specify a member IP address for the VTEP.

vtep group group-ip member local member-ip

By default, a VTEP is not assigned to any VTEP group.

The specified member IP address must already exist on the local VTEP and be unique in the VTEP group. You must configure a routing protocol to advertise the IP address to the transport network.

10.     Specify the member IP address of all the other VTEPs in the VTEP group.

vtep group group-ip member remote member-ip&<1-8>

By default, the list of remote VTEPs is not configured.

Specifying a VTEP group as the gateway for an access layer VTEP

Prerequisites

Before you specify a VTEP group on an access layer VTEP, perform the following tasks on the VTEP:

·     Configure VSIs and VXLANs.

·     Set up VXLAN tunnels to remote sites and the VTEP group, and assign the tunnels to VXLANs.

Procedure

1.     Enter system view.

system-view

2.     Specify a VTEP group and all its member VTEPs.

vtep group group-ip member remote member-ip&<1-8>

By default, no VTEP group is specified.

Perform this task to specify all member VTEPs in the VTEP group.

Configuring a distributed VXLAN IP gateway

Restrictions and guidelines for distributed VXLAN IP gateway configuration

For a VXLAN that requires access to the external network, specify the VXLAN's VSI interface on the border gateway as the next hop by using one of the following methods:

·     Configure a static route.

·     Configure a routing policy, and apply the policy by using the apply default-next-hop command. For more information about configuring routing policies, see routing policy configuration in Layer 3—IP Routing Configuration Guide.

If both ARP (or ND) flood suppression and local proxy ARP (or local ND proxy) are enabled on a distributed VXLAN IP gateway, only ARP (or ND) flood suppression takes effect. As a best practice, do not use these features together on distributed VXLAN IP gateways. For more information about ARP (or ND) flood suppression, see "Enabling ARP flood suppression" or "Enabling ND flood suppression."

Make sure a VSI interface uses the same MAC address to provide service on distributed VXLAN IP gateways connected to IPv4 sites. Make sure a VSI interface uses different link-local addresses to provide service on distributed VXLAN IP gateways connected to both IPv4 and IPv6 sites.

Configuring a gateway interface on a distributed VXLAN IP gateway

1.     Enter system view.

system-view

2.     Create a VSI interface and enter VSI interface view.

interface vsi-interface vsi-interface-id

3.     Assign an IP address to the VSI interface.

IPv4:

ip address ip-address { mask | mask-length } [ sub ]

IPv6:

See IPv6 basics in Layer 3—IP Services Configuration Guide.

By default, no IP address is assigned to a VSI interface.

4.     Specify the VSI interface as a distributed gateway.

distributed-gateway local

By default, a VSI interface is not a distributed gateway.

5.     Enable local proxy ARP or local ND proxy.

IPv4:

local-proxy-arp enable [ ip-range startIP to endIP ]

By default, local proxy ARP is disabled.

For more information about this command, see proxy ARP commands in Layer 3—IP Services Command Reference.

IPv6:

local-proxy-nd enable

By default, local ND proxy is disabled.

For more information about this command, see IPv6 basics commands in Layer 3—IP Services Command Reference.

6.     Bring up the VSI interface.

undo shutdown

By default, a VSI interface is up.

7.     Return to system view.

quit

8.     Enter VSI view.

vsi vsi-name

9.     Specify the VSI interface as the gateway interface for the VSI.

gateway vsi-interface vsi-interface-id

By default, no gateway interface is specified for a VSI.

Enabling dynamic ARP or ND entry synchronization for distributed VXLAN IP gateways

About dynamic ARP or ND entry synchronization for distributed VXLAN IP gateways

When local proxy ARP or local ND proxy is enabled on distributed VXLAN IP gateways, enable this feature for all gateways to have the same ARP or ND entries.

A controller or the EVPN feature can also synchronize ARP or ND entries among distributed VXLAN IP gateways. When you use a controller or the EVPN feature, do not enable dynamic ARP or ND entry synchronization.

Enabling dynamic ARP entry synchronization

1.     Enter system view.

system-view

2.     Enable dynamic ARP entry synchronization for distributed VXLAN IP gateways.

arp distributed-gateway dynamic-entry synchronize

By default, dynamic ARP entry synchronization is disabled for distributed VXLAN IP gateways.

Enabling dynamic ND entry synchronization

1.     Enter system view.

system-view

2.     Enable dynamic ND entry synchronization for distributed VXLAN IP gateways.

ipv6 nd distributed-gateway dynamic-entry synchronize

By default, dynamic ND entry synchronization is disabled for distributed VXLAN IP gateways.

Assigning a subnet to a VSI

About subnet assignment to a VSI

Perform this task on VSIs that share a gateway interface. This task enables the VSI interface to identify the VSI of a packet.

You can assign a maximum of eight IPv4 and IPv6 subnets to a VSI. Make sure these subnets are on the same network as one of the IP addresses on the gateway interface.

For VSIs that share a gateway interface, the subnets must be unique.

If you remove the gateway interface from the VSI, the VSI's subnet settings are automatically deleted.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Assign a subnet to the VSI.

gateway subnet { ipv4-address wildcard-mask | ipv6-address prefix-length }

By default, no subnet exists on a VSI.

Managing ARP entries and ND entries

Adding a static ARP entry

About static ARP entries

A VXLAN IP gateway can dynamically learn ARP entries and use manually configured static ARP entries.

Procedure

1.     Enter system view.

system-view

2.     Add a static local-ARP entry.

arp static ip-address mac-address vsi-interface vsi-interface-id interface-type interface-number service-instance instance-id vsi vsi-name [ vpn-instance vpn-instance-name ]

For more information about this command, see ARP commands in Layer 3—IP Services Command Reference.

3.     Add a static remote-ARP entry.

arp static ip-address mac-address vsi-interface vsi-interface-id tunnel number vsi vsi-name [ vpn-instance vpn-instance-name ]

For more information about this command, see ARP commands in Layer 3—IP Services Command Reference.

Disabling remote ARP or ND learning for VXLANs

About remote ARP and ND learning

By default, the device learns ARP or ND information of remote user terminals from packets received on VXLAN tunnel interfaces. To save resources on VTEPs in an SDN transport network, you can temporarily disable remote ARP or ND learning when the controller and VTEPs are synchronizing entries. After the entry synchronization is completed, enable remote ARP or ND learning.

Restrictions and guidelines

As a best practice, disable remote ARP or ND learning for VXLANs only when the controller and VTEPs are synchronizing entries.

Procedure

1.     Enter system view.

system-view

2.     Disable remote ARP learning.

vxlan tunnel arp-learning disable

By default, remote ARP learning is enabled for VXLANs.

3.     Disable remote ND learning.

vxlan tunnel nd-learning disable

By default, remote ND learning is enabled for VXLANs.

Configuring a VSI interface

Configuring optional parameters for a VSI interface

1.     Enter system view.

system-view

2.     Enter VSI interface view.

interface vsi-interface vsi-interface-id

3.     Assign a MAC address to the VSI interface.

mac-address mac-address

By default, the MAC address of VSI interfaces is the subsequent higher MAC address of VLAN-interface 4094's MAC address.

4.     Configure the description of the VSI interface.

description text

The default description of a VSI interface is interface-name plus Interface (for example, Vsi-interface100 Interface).

5.     Set the MTU for the VSI interface.

mtu size

The default MTU is 1444 bytes.

6.     Set the expected bandwidth for the VSI interface.

bandwidth bandwidth-value

The default expected bandwidth (in kbps) equals the interface baudrate divided by 1000.

The expected bandwidth is an informational parameter used only by higher-layer protocols for calculation. You cannot adjust the actual bandwidth of an interface by using this command.

7.     Set an ARP packet sending rate limit for the VSI interface.

arp send-rate pps

By default, the ARP packet sending rate is not limited for a VSI interface.

Restoring the default settings of the VSI interface

Restrictions and guidelines

CAUTION

CAUTION:

This operation might interrupt ongoing network services. Make sure you are fully aware of the impact of this operation when you perform it on a live network.

 

This operation might fail to restore the default settings for some commands for reasons such as command dependencies or system restrictions. Use the display this command in interface view to identify these commands. Use their undo forms or follow the command reference to restore their default settings. If your restoration attempt still fails, follow the error message instructions to resolve the problem.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI interface view.

interface vsi-interface vsi-interface-id

3.     Restore the default settings of the VSI interface.

default

Enabling packet statistics for a VSI interface

About packet statistics for a VSI interface

To enable packet statistics for a VSI and its associated VSI interface, execute the statistics enable command in VSI view.

Restrictions and guidelines

Packet statistics take effect on a VSI interface only if it is associated with only one VSI.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Enable packet statistics for the VSI.

statistics enable

By default, the packet statistics feature is disabled for all VSIs.

Display and maintenance commands for VXLAN IP gateways

Execute display commands in any view and reset commands in user view.

 

Task

Command

Display information about VSI interfaces.

display interface [ vsi-interface [ vsi-interface-id ] ] [ brief [ description | down ] ]

Clear statistics on VSI interfaces.

reset counters interface [ vsi-interface [ vsi-interface-id ] ]

VXLAN IP gateway configuration examples

Example: Configuring a centralized VXLAN IP gateway

Network configuration

As shown in Figure 19:

·     Configure VXLAN 10 as a unicast-mode VXLAN on Switch A, Switch B, and Switch C to provide connectivity for the VMs across the network sites.

·     Configure a centralized VXLAN IP gateway on Switch B to provide gateway services for VXLAN 10.

·     Manually establish VXLAN tunnels and assign the tunnels to VXLAN 10.

·     Enable remote-MAC address learning.

Figure 19 Network diagram

Procedure

 

1.     Set the VXLAN hardware resource mode on Switch B and reboot it.

[SwitchB] hardware-resource vxlan l3gw

Do you want to change the specified hardware resource working mode? [Y/N]:y

The hardware resource working mode is changed, please save the configuration and

 reboot the system to make it effective.

[SwitchB] quit

<SwitchB> reboot

Start to check configuration with next startup configuration file, please wait..

.......DONE!

Current configuration may be lost after the reboot, save current configuration?

[Y/N]:y

This command will reboot the device. Continue? [Y/N]:y

2.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

3.     On VM 1 and VM 2, specify 10.1.1.1 as the gateway address. (Details not shown.)

4.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 19. (Details not shown.)

# Configure OSPF on all transport network switches (Switches A through D). (Details not shown.)

# Configure OSPF to advertise routes to networks 10.1.1.0/24 and 20.1.1.0/24 on Switch B and Switch E. (Details not shown.)

5.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch B and Switch C.

[SwitchA] interface loopback 0

[SwitchA-Loopback0] ip address 1.1.1.1 255.255.255.255

[SwitchA-Loopback0] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 1.

[SwitchA] interface tunnel 1 mode vxlan

[SwitchA-Tunnel1] source 1.1.1.1

[SwitchA-Tunnel1] destination 2.2.2.2

[SwitchA-Tunnel1] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 2.

[SwitchA] interface tunnel 2 mode vxlan

[SwitchA-Tunnel2] source 1.1.1.1

[SwitchA-Tunnel2] destination 3.3.3.3

[SwitchA-Tunnel2] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] tunnel 1

[SwitchA-vsi-vpna-vxlan-10] tunnel 2

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchA-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchA-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/1] quit

6.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch A and Switch C.

[SwitchB] interface loopback 0

[SwitchB-Loopback0] ip address 2.2.2.2 255.255.255.255

[SwitchB-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 2.

[SwitchB] interface tunnel 2 mode vxlan

[SwitchB-Tunnel2] source 2.2.2.2

[SwitchB-Tunnel2] destination 1.1.1.1

[SwitchB-Tunnel2] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 3.

[SwitchB] interface tunnel 3 mode vxlan

[SwitchB-Tunnel3] source 2.2.2.2

[SwitchB-Tunnel3] destination 3.3.3.3

[SwitchB-Tunnel3] quit

# Assign Tunnel 2 and Tunnel 3 to VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] tunnel 2

[SwitchB-vsi-vpna-vxlan-10] tunnel 3

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Create VSI-interface 1 and assign the interface an IP address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchB] interface vsi-interface 1

[SwitchB-Vsi-interface1] ip address 10.1.1.1 255.255.255.0

[SwitchB-Vsi-interface1] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] gateway vsi-interface 1

[SwitchB-vsi-vpna] quit

7.     Configure Switch C:

# Enable L2VPN.

<SwitchC> system-view

[SwitchC] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch A and Switch B.

[SwitchC] interface loopback 0

[SwitchC-Loopback0] ip address 3.3.3.3 255.255.255.255

[SwitchC-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 1.

[SwitchC] interface tunnel 1 mode vxlan

[SwitchC-Tunnel1] source 3.3.3.3

[SwitchC-Tunnel1] destination 1.1.1.1

[SwitchC-Tunnel1] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 3.

[SwitchC] interface tunnel 3 mode vxlan

[SwitchC-Tunnel3] source 3.3.3.3

[SwitchC-Tunnel3] destination 2.2.2.2

[SwitchC-Tunnel3] quit

# Assign Tunnel 1 and Tunnel 3 to VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] tunnel 1

[SwitchC-vsi-vpna-vxlan-10] tunnel 3

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchC] interface twenty-fivegige 1/0/1

[SwitchC-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchC-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchC-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchC-Twenty-FiveGigE1/0/1] quit

Verifying the configuration

1.     Verify the VXLAN IP gateway settings on Switch B:

# Verify that the VXLAN tunnel interfaces are up on Switch B.

[SwitchB] display interface tunnel 2

Tunnel2

Current state: UP

Line protocol state: UP

Description: Tunnel2 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 2.2.2.2, destination 1.1.1.1

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that VSI-interface 1 is up.

[SwitchB] display interface vsi-interface 1

Vsi-interface1

Current state: UP

Line protocol state: UP

Description: Vsi-interface1 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1444

Internet address: 10.1.1.1/24 (primary)

IP packet frame type: Ethernet II, hardware address: 0011-2200-0102

IPv6 packet frame type: Ethernet II, hardware address: 0011-2200-0102

Physical: Unknown, baudrate: 1000000 kbps

Last clearing of counters: Never

Input (total):  0 packets, 0 bytes

Output (total):  0 packets, 0 bytes

# Verify that the VXLAN tunnels have been assigned to the VXLAN, and VSI-interface 1 is the gateway interface of VSI vpna.

[SwitchB] display l2vpn vsi verbose

VSI Name: vpna

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  Gateway interface       : VSI-interface 1

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel2              0x5000002  Up     Manual      Disabled

    Tunnel3              0x5000003  Up     Manual      Disabled

# Verify that Switch B has created ARP entries for the VMs.

[SwitchB] display arp

  Type: S-Static   D-Dynamic   O-Openflow   R-Rule   M-Multiport  I-Invalid

IP address       MAC address    VLAN/VSI  Interface/Link ID        Aging Type

20.1.1.5         000c-29c1-5e46 20        Vlan20                   19    D

10.1.1.11        0000-1234-0001 0         Tunnel2                  20    D

10.1.1.12        0000-1234-0002 0         Tunnel3                  19    D

# Verify that Switch B has created FIB entries for the VMs.

[SwitchB] display fib 10.1.1.11

Destination count: 1 FIB entry count: 1

Flag:

  U:Usable    G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

Destination/Mask   Nexthop         Flag     OutInterface/Token       Label

10.1.1.11/32       10.1.1.11       UH       Vsi1                     Null

2.     Verify that the VMs can access the WAN:

# Verify that VM 1 and VM 2 can ping each other. (Details not shown.)

# Verify that VM 1, VM 2, and VLAN-interface 20 (20.1.1.5) on Switch E can ping each other. (Details not shown.)

Example: Configuring a centralized VXLAN IP gateway group

Network configuration

As shown in Figure 20:

·     Configure VXLAN 10 as a unicast-mode VXLAN on Switch A, Switch B, and Switch C.

·     Manually establish VXLAN tunnels and assign the tunnels to VXLAN 10.

·     Assign Switch B and Switch C to a VTEP group to provide gateway services for VXLAN 10.

Figure 20 Network diagram

Procedure

 

1.     Set the VXLAN hardware resource mode on Switch B and Switch C, and reboot the switches. This step uses Switch B as an example.

[SwitchB] hardware-resource vxlan l3gw

Do you want to change the specified hardware resource working mode? [Y/N]:y

The hardware resource working mode is changed, please save the configuration and

 reboot the system to make it effective.

[SwitchB] quit

<SwitchB> reboot

Start to check configuration with next startup configuration file, please wait..

.......DONE!

Current configuration may be lost after the reboot, save current configuration?

[Y/N]:y

This command will reboot the device. Continue? [Y/N]:y

2.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

3.     On VM 1, specify 10.1.1.1 as the gateway address. (Details not shown.)

4.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 20. (Details not shown.)

# Configure OSPF on all transport network switches (Switches A through D). (Details not shown.)

5.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnel to the VTEP group.

[SwitchA] interface loopback 0

[SwitchA-Loopback0] ip address 1.1.1.1 255.255.255.255

[SwitchA-Loopback0] quit

# Create a VXLAN tunnel to the VTEP group. The tunnel interface name is Tunnel 1.

[SwitchA] interface tunnel 1 mode vxlan

[SwitchA-Tunnel1] source 1.1.1.1

[SwitchA-Tunnel1] destination 2.2.2.2

[SwitchA-Tunnel1] quit

# Assign Tunnel 1 to VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] tunnel 1

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchA-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchA-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/1] quit

# Specify VTEP group 2.2.2.2 and its member VTEPs at 3.3.3.3 and 4.4.4.4.

[SwitchA] vtep group 2.2.2.2 member remote 3.3.3.3 4.4.4.4

6.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Assign IP address 2.2.2.2/32 to Loopback 0. The IP address will be used as the IP address of the VTEP group.

[SwitchB] interface loopback 0

[SwitchB-Loopback0] ip address 2.2.2.2 255.255.255.255

[SwitchB-Loopback0] quit

# Assign an IP address to Loopback 1. The IP address will be used as the member IP address of the VTEP.

[SwitchB] interface loopback 1

[SwitchB-Loopback1] ip address 3.3.3.3 255.255.255.255

[SwitchB-Loopback1] quit

# Create a VXLAN tunnel to Switch A. The tunnel source IP address is 2.2.2.2, and the tunnel interface name is Tunnel 2.

[SwitchB] interface tunnel 2 mode vxlan

[SwitchB-Tunnel2] source 2.2.2.2

[SwitchB-Tunnel2] destination 1.1.1.1

[SwitchB-Tunnel2] quit

# Assign Tunnel 2 to VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] tunnel 2

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Create VSI-interface 1 and assign the interface an IP address and a MAC address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchB] interface vsi-interface 1

[SwitchB-Vsi-interface1] ip address 10.1.1.1 255.255.255.0

[SwitchB-Vsi-interface1] mac-address 2-2-2

[SwitchB-Vsi-interface1] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] gateway vsi-interface 1

[SwitchB-vsi-vpna] quit

# Assign the local VTEP to VTEP group 2.2.2.2, and specify the member IP address of the local VTEP.

[SwitchB] vtep group 2.2.2.2 member local 3.3.3.3

# Specify the other member VTEP Switch C.

[SwitchB] vtep group 2.2.2.2 member remote 4.4.4.4

7.     Configure Switch C:

# Enable L2VPN.

<SwitchC> system-view

[SwitchC] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Assign IP address 2.2.2.2/32 to Loopback 0. The IP address will be used as the IP address of the VTEP group.

[SwitchC] interface loopback 0

[SwitchC-Loopback0] ip address 2.2.2.2 255.255.255.255

[SwitchC-Loopback0] quit

# Assign an IP address to Loopback 1. The IP address will be used as the member IP address of the VTEP.

[SwitchC] interface loopback 1

[SwitchC-Loopback1] ip address 4.4.4.4 255.255.255.255

[SwitchC-Loopback1] quit

# Create a VXLAN tunnel to Switch A. The tunnel source IP address is 2.2.2.2, and the tunnel interface name is Tunnel 2.

[SwitchC] interface tunnel 2 mode vxlan

[SwitchC-Tunnel2] source 2.2.2.2

[SwitchC-Tunnel2] destination 1.1.1.1

[SwitchC-Tunnel2] quit

# Assign Tunnel 2 to VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] tunnel 2

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Create VSI-interface 1 and assign the interface an IP address and a MAC address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchC] interface vsi-interface 1

[SwitchC-Vsi-interface1] ip address 10.1.1.1 255.255.255.0

[SwitchC-Vsi-interface1] mac-address 2-2-2

[SwitchC-Vsi-interface1] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] gateway vsi-interface 1

[SwitchC-vsi-vpna] quit

# Assign the local VTEP to VTEP group 2.2.2.2, and specify the member IP address of the local VTEP.

[SwitchC] vtep group 2.2.2.2 member local 4.4.4.4

# Specify the other member VTEP Switch B.

[SwitchC] vtep group 2.2.2.2 member remote 3.3.3.3

Example: Configuring distributed VXLAN IPv4 gateways

Network configuration

As shown in Figure 21:

·     Configure VXLAN 10, VXLAN 20, and VXLAN 30 as unicast-mode VXLANs on Switch A, Switch B, and Switch C to provide connectivity for the VMs across the network sites.

·     Manually establish VXLAN tunnels and assign the tunnels to the VXLANs.

·     Configure distributed VXLAN IP gateways on Switch A and Switch C to forward traffic between the VXLANs.

·     Configure Switch B as a border gateway to forward traffic between the VXLANs and the WAN connected to Switch E.

Figure 21 Network diagram

Procedure

 

1.     Set the VXLAN hardware resource mode on Switch A, Switch B, and Switch C, and reboot the switches. This step uses Switch A as an example.

[SwitchA] hardware-resource vxlan l3gw

Do you want to change the specified hardware resource working mode? [Y/N]:y

The hardware resource working mode is changed, please save the configuration and

 reboot the system to make it effective.

[SwitchA] quit

<SwitchA> reboot

Start to check configuration with next startup configuration file, please wait..

.......DONE!

Current configuration may be lost after the reboot, save current configuration?

[Y/N]:y

This command will reboot the device. Continue? [Y/N]:y

2.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

3.     On VM 1, VM 2, and VM 3, specify 10.1.1.1, 10.1.2.1, and 20.1.1.1 as the gateway address, respectively. (Details not shown.)

4.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 21. (Details not shown.)

# Configure OSPF on all transport network switches (Switches A through D). (Details not shown.)

# Configure OSPF to advertise routes to networks 10.1.1.0/24, 10.1.2.0/24, 20.1.1.0/24, and 25.1.1.0/24 on Switch B and Switch E. (Details not shown.)

5.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchA] vsi vpnb

[SwitchA-vsi-vpnb] vxlan 20

[SwitchA-vsi-vpnb-vxlan-20] quit

[SwitchA-vsi-vpnb] quit

# Create VSI vpnc and VXLAN 30.

[SwitchA] vsi vpnc

[SwitchA-vsi-vpnc] vxlan 30

[SwitchA-vsi-vpnc-vxlan-30] quit

[SwitchA-vsi-vpnc] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch B and Switch C.

[SwitchA] interface loopback 0

[SwitchA-Loopback0] ip address 1.1.1.1 255.255.255.255

[SwitchA-Loopback0] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 1.

[SwitchA] interface tunnel 1 mode vxlan

[SwitchA-Tunnel1] source 1.1.1.1

[SwitchA-Tunnel1] destination 2.2.2.2

[SwitchA-Tunnel1] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 2.

[SwitchA] interface tunnel 2 mode vxlan

[SwitchA-Tunnel2] source 1.1.1.1

[SwitchA-Tunnel2] destination 3.3.3.3

[SwitchA-Tunnel2] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] tunnel 1

[SwitchA-vsi-vpna-vxlan-10] tunnel 2

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 20.

[SwitchA] vsi vpnb

[SwitchA-vsi-vpnb] vxlan 20

[SwitchA-vsi-vpnb-vxlan-20] tunnel 1

[SwitchA-vsi-vpnb-vxlan-20] tunnel 2

[SwitchA-vsi-vpnb-vxlan-20] quit

[SwitchA-vsi-vpnb] quit

# Assign Tunnel 2 to VXLAN 30.

[SwitchA] vsi vpnc

[SwitchA-vsi-vpnc] vxlan 30

[SwitchA-vsi-vpnc-vxlan-30] tunnel 2

[SwitchA-vsi-vpnc-vxlan-30] quit

[SwitchA-vsi-vpnc] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchA-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchA-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/1] quit

# On Twenty-FiveGigE 1/0/3, create Ethernet service instance 1000 to match VLAN 3.

[SwitchA] interface twenty-fivegige 1/0/3

[SwitchA-Twenty-FiveGigE1/0/3] port link-type trunk

[SwitchA-Twenty-FiveGigE1/0/3] port trunk permit vlan 3

[SwitchA-Twenty-FiveGigE1/0/3] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/3-srv1000] encapsulation s-vid 3

# Map Ethernet service instance 1000 to VSI vpnb.

[SwitchA-Twenty-FiveGigE1/0/3-srv1000] xconnect vsi vpnb

[SwitchA-Twenty-FiveGigE1/0/3-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/3] quit

# Create VSI-interface 1 and assign the interface an IP address and a MAC address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchA] interface vsi-interface 1

[SwitchA-Vsi-interface1] ip address 10.1.1.1 255.255.255.0

[SwitchA-Vsi-interface1] mac-address 1-1-1

# Specify VSI-interface 1 as a distributed gateway and enable local proxy ARP on the interface.

[SwitchA-Vsi-interface1] distributed-gateway local

[SwitchA-Vsi-interface1] local-proxy-arp enable

[SwitchA-Vsi-interface1] quit

# Create VSI-interface 2 and assign the interface an IP address and a MAC address. The IP address will be used as the gateway address for VXLAN 20.

[SwitchA] interface vsi-interface 2

[SwitchA-Vsi-interface2] ip address 10.1.2.1 255.255.255.0

[SwitchA-Vsi-interface2] mac-address 2-2-2

# Specify VSI-interface 2 as a distributed gateway and enable local proxy ARP on the interface.

[SwitchA-Vsi-interface2] distributed-gateway local

[SwitchA-Vsi-interface2] local-proxy-arp enable

[SwitchA-Vsi-interface2] quit

# Enable dynamic ARP entry synchronization for distributed VXLAN IP gateways.

[SwitchA] arp distributed-gateway dynamic-entry synchronize

# Specify VSI-interface 1 as the gateway interface for VSI vpna. Assign subnet 10.1.1.0/24 to the VSI.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] gateway vsi-interface 1

[SwitchA-vsi-vpna] gateway subnet 10.1.1.0 0.0.0.255

[SwitchA-vsi-vpna] quit

# Specify VSI-interface 2 as the gateway interface for VSI vpnb.

[SwitchA] vsi vpnb

[SwitchA-vsi-vpnb] gateway vsi-interface 2

[SwitchA-vsi-vpnb] quit

# Assign a secondary IP address to VSI-interface 1. The IP address will be used as the gateway address for VXLAN 30.

[SwitchA] interface vsi-interface 1

[SwitchA-Vsi-interface1] ip address 20.1.1.1 255.255.255.0 sub

[SwitchA-Vsi-interface1] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpnc. Assign subnet 20.1.1.0/24 to the VSI.

[SwitchA] vsi vpnc

[SwitchA-vsi-vpnc] gateway vsi-interface 1

[SwitchA-vsi-vpnc] gateway subnet 20.1.1.0 0.0.0.255

[SwitchA-vsi-vpnc] quit

# Configure a PBR policy for VXLAN 10. Set the policy name to vxlan10, and set the default next hop to 10.1.1.2 (VSI-interface 1 on Switch B).

[SwitchA] acl advanced 3000

[SwitchA-acl-ipv4-adv-3000] rule 0 permit ip

[SwitchA-acl-ipv4-adv-3000] quit

[SwitchA] policy-based-route vxlan10 permit node 5

[SwitchA-pbr-vxlan10-5] if-match acl 3000

[SwitchA-pbr-vxlan10-5] apply default-next-hop 10.1.1.2

[SwitchA-pbr-vxlan10-5] quit

# Configure a PBR policy for VXLAN 20. Set the policy name to vxlan20, and set the default next hop to 10.1.2.2 (VSI-interface 2 on Switch B).

[SwitchA] policy-based-route vxlan20 permit node 5

[SwitchA-pbr-vxlan20-5] if-match acl 3000

[SwitchA-pbr-vxlan20-5] apply default-next-hop 10.1.2.2

[SwitchA-pbr-vxlan20-5] quit

# Apply policies vxlan10 and vxlan20 to VSI-interface 1 and VSI-interface 2, respectively.

[SwitchA] interface vsi-interface 1

[SwitchA-Vsi-interface1] ip policy-based-route vxlan10

[SwitchA-Vsi-interface1] quit

[SwitchA] interface vsi-interface 2

[SwitchA-Vsi-interface2] ip policy-based-route vxlan20

[SwitchA-Vsi-interface2] quit

6.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] vxlan 20

[SwitchB-vsi-vpnb-vxlan-20] quit

[SwitchB-vsi-vpnb] quit

# Create VSI vpnc and VXLAN 30.

[SwitchB] vsi vpnc

[SwitchB-vsi-vpnc] vxlan 30

[SwitchB-vsi-vpnc-vxlan-30] quit

[SwitchB-vsi-vpnc] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch A and Switch C.

[SwitchB] interface loopback 0

[SwitchB-Loopback0] ip address 2.2.2.2 255.255.255.255

[SwitchB-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 2.

[SwitchB] interface tunnel 2 mode vxlan

[SwitchB-Tunnel2] source 2.2.2.2

[SwitchB-Tunnel2] destination 1.1.1.1

[SwitchB-Tunnel2] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 3.

[SwitchB] interface tunnel 3 mode vxlan

[SwitchB-Tunnel3] source 2.2.2.2

[SwitchB-Tunnel3] destination 3.3.3.3

[SwitchB-Tunnel3] quit

# Assign Tunnel 2 to VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] tunnel 2

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Assign Tunnel 2 to VXLAN 20.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] vxlan 20

[SwitchB-vsi-vpnb-vxlan-20] tunnel 2

[SwitchB-vsi-vpnb-vxlan-20] quit

[SwitchB-vsi-vpnb] quit

# Assign Tunnel 3 to VXLAN 30.

[SwitchB] vsi vpnc

[SwitchB-vsi-vpnc] vxlan 30

[SwitchB-vsi-vpnc-vxlan-30] tunnel 3

[SwitchB-vsi-vpnc-vxlan-30] quit

[SwitchB-vsi-vpnc] quit

# Create VSI-interface 1 and assign the interface an IP address.

[SwitchB] interface vsi-interface 1

[SwitchB-Vsi-interface1] ip address 10.1.1.2 255.255.255.0

[SwitchB-Vsi-interface1] quit

# Create VSI-interface 2 and assign the interface an IP address.

[SwitchB] interface vsi-interface 2

[SwitchB-Vsi-interface2] ip address 10.1.2.2 255.255.255.0

[SwitchB-Vsi-interface2] quit

# Create VSI-interface 3 and assign the interface an IP address.

[SwitchB] interface vsi-interface 3

[SwitchB-Vsi-interface3] ip address 20.1.1.2 255.255.255.0

[SwitchB-Vsi-interface3] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] gateway vsi-interface 1

[SwitchB-vsi-vpna] quit

# Specify VSI-interface 2 as the gateway interface for VSI vpnb.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] gateway vsi-interface 2

[SwitchB-vsi-vpnb] quit

# Specify VSI-interface 3 as the gateway interface for VSI vpnc.

[SwitchB] vsi vpnc

[SwitchB-vsi-vpnc] gateway vsi-interface 3

[SwitchB-vsi-vpnc] quit

7.     Configure Switch C:

# Enable L2VPN.

<SwitchC> system-view

[SwitchC] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchC] vsi vpnb

[SwitchC-vsi-vpnb] vxlan 20

[SwitchC-vsi-vpnb-vxlan-20] quit

[SwitchC-vsi-vpnb] quit

# Create VSI vpnc and VXLAN 30.

[SwitchC] vsi vpnc

[SwitchC-vsi-vpnc] vxlan 30

[SwitchC-vsi-vpnc-vxlan-30] quit

[SwitchC-vsi-vpnc] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch A and Switch B.

[SwitchC] interface loopback 0

[SwitchC-Loopback0] ip address 3.3.3.3 255.255.255.255

[SwitchC-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 1.

[SwitchC] interface tunnel 1 mode vxlan

[SwitchC-Tunnel1] source 3.3.3.3

[SwitchC-Tunnel1] destination 1.1.1.1

[SwitchC-Tunnel1] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 3.

[SwitchC] interface tunnel 3 mode vxlan

[SwitchC-Tunnel3] source 3.3.3.3

[SwitchC-Tunnel3] destination 2.2.2.2

[SwitchC-Tunnel3] quit

# Assign Tunnel 1 to VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] tunnel 1

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Assign Tunnel 1 to VXLAN 20.

[SwitchC] vsi vpnb

[SwitchC-vsi-vpnb] vxlan 20

[SwitchC-vsi-vpnb-vxlan-20] tunnel 1

[SwitchC-vsi-vpnb-vxlan-20] quit

[SwitchC-vsi-vpnb] quit

# Assign Tunnel 1 and Tunnel 3 to VXLAN 30.

[SwitchC] vsi vpnc

[SwitchC-vsi-vpnc] vxlan 30

[SwitchC-vsi-vpnc-vxlan-30] tunnel 1

[SwitchC-vsi-vpnc-vxlan-30] tunnel 3

[SwitchC-vsi-vpnc-vxlan-30] quit

[SwitchC-vsi-vpnc] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 4.

[SwitchC] interface twenty-fivegige 1/0/1

[SwitchC-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchC-Twenty-FiveGigE1/0/1] port trunk permit vlan 4

[SwitchC-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 4

# Map Ethernet service instance 1000 to VSI vpnc.

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpnc

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchC-Twenty-FiveGigE1/0/1] quit

# Create VSI-interface 1 and assign the interface an IP address and a MAC address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchC] interface vsi-interface 1

[SwitchC-Vsi-interface1] ip address 10.1.1.1 255.255.255.0

[SwitchC-Vsi-interface1] mac-address 1-1-1

# Specify VSI-interface 1 as a distributed gateway and enable local proxy ARP on the interface.

[SwitchC-Vsi-interface1] distributed-gateway local

[SwitchC-Vsi-interface1] local-proxy-arp enable

[SwitchC-Vsi-interface1] quit

# Create VSI-interface 2 and assign the interface an IP address and a MAC address. The IP address will be used as the gateway address for VXLAN 20.

[SwitchC] interface vsi-interface 2

[SwitchC-Vsi-interface2] ip address 10.1.2.1 255.255.255.0

[SwitchC-Vsi-interface2] mac-address 2-2-2

# Specify VSI-interface 2 as a distributed gateway and enable local proxy ARP on the interface.

[SwitchC-Vsi-interface2] distributed-gateway local

[SwitchC-Vsi-interface2] local-proxy-arp enable

[SwitchC-Vsi-interface2] quit

# Enable dynamic ARP entry synchronization for distributed VXLAN IP gateways.

[SwitchC] arp distributed-gateway dynamic-entry synchronize

# Specify VSI-interface 1 as the gateway interface for VSI vpna. Assign subnet 10.1.1.0/24 to the VSI.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] gateway vsi-interface 1

[SwitchC-vsi-vpna] gateway subnet 10.1.1.0 0.0.0.255

[SwitchC-vsi-vpna] quit

# Specify VSI-interface 2 as the gateway interface for VSI vpnb.

[SwitchC] vsi vpnb

[SwitchC-vsi-vpnb] gateway vsi-interface 2

[SwitchC-vsi-vpnb] quit

# Assign a secondary IP address to VSI-interface 1. The IP address will be used as the gateway address for VXLAN 30.

[SwitchC] interface vsi-interface 1

[SwitchC-Vsi-interface1] ip address 20.1.1.1 255.255.255.0 sub

[SwitchC-Vsi-interface1] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpnc. Assign subnet 20.1.1.0/24 to the VSI.

[SwitchC] vsi vpnc

[SwitchC-vsi-vpnc] gateway vsi-interface 1

[SwitchC-vsi-vpnc] gateway subnet 20.1.1.0 0.0.0.255

[SwitchC-vsi-vpnc] quit

# Configure a PBR policy for the VXLANs. Set the policy name to vxlan, and set the default next hop to 20.1.1.2 (VSI-interface 1 on Switch B).

[SwitchC] acl advanced 3000

[SwitchC-acl-ipv4-adv-3000] rule 0 permit ip

[SwitchC-acl-ipv4-adv-3000] quit

[SwitchC] policy-based-route vxlan permit node 5

[SwitchC-pbr-vxlan-5] if-match acl 3000

[SwitchC-pbr-vxlan-5] apply default-next-hop 20.1.1.2

[SwitchC-pbr-vxlan-5] quit

# Apply policy vxlan to VSI-interface 1.

[SwitchC] interface vsi-interface1

[SwitchC-Vsi-interface1] ip policy-based-route vxlan

[SwitchC-Vsi-interface1] quit

Verifying the configuration

1.     Verify the VXLAN IP gateway settings on Switch A:

# Verify that the VXLAN tunnel interfaces are up on Switch A.

[SwitchA] display interface tunnel 2

Tunnel2

Current state: UP

Line protocol state: UP

Description: Tunnel2 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 1.1.1.1, destination 3.3.3.3

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that VSI-interface 1 is up.

[SwitchA] display interface vsi-interface 1

Vsi-interface1

Current state: UP

Line protocol state: UP

Description: Vsi-interface1 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1444

Internet address: 10.1.1.1/24 (primary)

IP packet frame type: Ethernet II, hardware address: 0001-0001-0001

IPv6 packet frame type: Ethernet II, hardware address: 0001-0001-0001

Physical: Unknown, baudrate: 1000000 kbps

Last clearing of counters: Never

Input (total):  0 packets, 0 bytes

Output (total):  0 packets, 0 bytes

# Verify that the VXLAN tunnels have been assigned to VXLAN 10, and VSI-interface 1 is the gateway interface for VSI vpna.

[SwitchA] display l2vpn vsi name vpna verbose

VSI Name: vpna

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  Gateway Interface       : VSI-interface 1

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

  ACs:

     AC                               Link ID    State    Type

     WGE1/0/1 srv1000                 0          Up       Manual

# Verify that Switch A has created ARP entries for the VMs.

[SwitchA] display arp

  Type: S-Static   D-Dynamic   O-Openflow   R-Rule   M-Multiport  I-Invalid

IP address       MAC address    VLAN/VSI  Interface/Link ID        Aging Type

11.1.1.4         000c-29c1-5e46 11        Vlan11                   19    D

10.1.1.2         3c8c-400d-867a 0         Tunnel1                  20    D

10.1.1.11        0cda-41b5-cf09 0         0                        20    D

10.1.2.2         3c8c-400d-867a 1         Tunnel1                  20    D

10.1.2.11        0cda-41b5-cf89 1         0                        20    D

20.1.1.12        0001-0001-0001 2         Tunnel2                  19    D

2.     Verify the configuration on the border gateway Switch B:

# Verify that the VXLAN tunnel interfaces are up on Switch B.

[SwitchB] display interface tunnel 2

Tunnel2

Current state: UP

Line protocol state: UP

Description: Tunnel2 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 2.2.2.2, destination 1.1.1.1

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that VSI-interface 1 is up.

[SwitchB] display interface vsi-interface 1

Vsi-interface1

Current state: UP

Line protocol state: UP

Description: Vsi-interface1 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1444

Internet address: 10.1.1.2/24 (primary)

IP packet frame type: Ethernet II, hardware address: 0011-2200-0102

IPv6 packet frame type: Ethernet II, hardware address: 0011-2200-0102

Physical: Unknown, baudrate: 1000000 kbps

Last clearing of counters: Never

Input (total):  0 packets, 0 bytes

Output (total):  0 packets, 0 bytes

# Verify that the VXLAN tunnels have been assigned to VXLAN 10, and VSI-interface 1 is the gateway interface for VSI vpna.

[SwitchB] display l2vpn vsi name vpna verbose

VSI Name: vpna

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  Gateway interface       : VSI-interface 1

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

# Verify that Switch B has created ARP entries for the VMs.

[SwitchB] display arp

  Type: S-Static   D-Dynamic   O-Openflow   R-Rule   M-Multiport  I-Invalid

IP address       MAC address    VLAN/VSI  Interface/Link ID        Aging Type

12.1.1.4         0000-fc00-00ab 12        Vlan12                   14    D

25.1.1.5         4431-9234-24bb 20        Vlan20                   17    D

10.1.1.1         0001-0001-0001 0         Tunnel2                  17    D

10.1.1.11        0001-0001-0001 0         Tunnel2                  20    D

10.1.2.1         0002-0002-0002 1         Tunnel2                  17    D

10.1.2.11        0002-0002-0002 1         Tunnel2                  20    D

20.1.1.1         0001-0001-0001 2         Tunnel3                  17    D

20.1.1.12        0001-0001-0001 2         Tunnel3                  20    D

# Verify that Switch B has created FIB entries for the VMs.

[SwitchB] display fib 10.1.1.11

Destination count: 1 FIB entry count: 1

Flag:

  U:Usable    G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

Destination/Mask   Nexthop         Flag     OutInterface/Token       Label

10.1.1.11/32       10.1.1.11       UH       Vsi1                     Null

[SwitchB] display fib 20.1.1.12

Destination count: 1 FIB entry count: 1

Flag:

  U:Usable    G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

Destination/Mask   Nexthop         Flag     OutInterface/Token       Label

20.1.1.12/32       20.1.1.12       UH       Vsi3                     Null

3.     Verify that the network connectivity for VMs meets the requirements:

# Verify that VM 1, VM 2, and VM 3 can ping each other. (Details not shown.)

# Verify that VM 1, VM 2, and VM 3 can ping VLAN-interface 20 (25.1.1.5) on Switch E for WAN access. (Details not shown.)

Example: Configuring distributed VXLAN IPv6 gateways

Network configuration

As shown in Figure 22:

·     Configure VXLAN 10 and VXLAN 20 as unicast-mode VXLANs on Switch A, Switch B, and Switch C to provide connectivity for the VMs across the network sites.

·     Manually establish VXLAN tunnels and assign the tunnels to the VXLANs.

·     Configure distributed VXLAN IP gateways on Switch A and Switch C to forward traffic between the VXLANs.

·     Configure Switch B as a border gateway to forward traffic between the VXLANs and the WAN connected to Switch E.

Figure 22 Network diagram

Procedure

1.     Set the VXLAN hardware resource mode on Switch A, Switch B, and Switch C, and reboot the switches. This step uses Switch A as an example.

[SwitchA] hardware-resource vxlan l3gw

Do you want to change the specified hardware resource working mode? [Y/N]:y

The hardware resource working mode is changed, please save the configuration and

 reboot the system to make it effective.

[SwitchA] quit

<SwitchA> reboot

Start to check configuration with next startup configuration file, please wait..

.......DONE!

Current configuration may be lost after the reboot, save current configuration?

[Y/N]:y

This command will reboot the device. Continue? [Y/N]:y

2.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

3.     On VM 1 and VM 2, specify 1::1 and 4::1 as the gateway address, respectively. (Details not shown.)

4.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 22. (Details not shown.)

# Configure OSPF on all transport network switches (switches A through D). (Details not shown.)

# Configure OSPFv3 to advertise routes to networks 1::/64, 4::/64, and 3::/64 on Switch B and Switch E. (Details not shown.)

5.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchA] vsi vpnb

[SwitchA-vsi-vpnb] vxlan 20

[SwitchA-vsi-vpnb-vxlan-20] quit

[SwitchA-vsi-vpnb] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch B and Switch C.

[SwitchA] interface loopback 0

[SwitchA-Loopback0] ip address 1.1.1.1 255.255.255.255

[SwitchA-Loopback0] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 1.

[SwitchA] interface tunnel 1 mode vxlan

[SwitchA-Tunnel1] source 1.1.1.1

[SwitchA-Tunnel1] destination 2.2.2.2

[SwitchA-Tunnel1] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 2.

[SwitchA] interface tunnel 2 mode vxlan

[SwitchA-Tunnel2] source 1.1.1.1

[SwitchA-Tunnel2] destination 3.3.3.3

[SwitchA-Tunnel2] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] tunnel 1

[SwitchA-vsi-vpna-vxlan-10] tunnel 2

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 20.

[SwitchA] vsi vpnb

[SwitchA-vsi-vpnb] vxlan 20

[SwitchA-vsi-vpnb-vxlan-20] tunnel 1

[SwitchA-vsi-vpnb-vxlan-20] tunnel 2

[SwitchA-vsi-vpnb-vxlan-20] quit

[SwitchA-vsi-vpnb] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 2.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchA-Twenty-FiveGigE1/0/1] port trunk permit vlan 2

[SwitchA-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 2

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/1] quit

# Enable dynamic ND entry synchronization for distributed VXLAN IP gateways.

[SwitchA] ipv6 nd distributed-gateway dynamic-entry synchronize

# Create VSI-interface 1 and assign the interface an IPv6 anycast address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchA] interface vsi-interface 1

[SwitchA-Vsi-interface1] ipv6 address 1::1/64 anycast

# Specify VSI-interface 1 as a distributed gateway and enable local ND proxy on the interface.

[SwitchA-Vsi-interface1] distributed-gateway local

[SwitchA-Vsi-interface1] local-proxy-nd enable

[SwitchA-Vsi-interface1] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] gateway vsi-interface 1

[SwitchA-vsi-vpna] quit

# Create VSI-interface 2 and assign the interface an IPv6 anycast address. The IP address will be used as the gateway address for VXLAN 20.

[SwitchA] interface vsi-interface 2

[SwitchA-Vsi-interface2] ipv6 address 4::1/64 anycast

# Specify VSI-interface 2 as a distributed gateway and enable local ND proxy on the interface.

[SwitchA-Vsi-interface2] distributed-gateway local

[SwitchA-Vsi-interface2] local-proxy-nd enable

[SwitchA-Vsi-interface2] quit

# Specify VSI-interface 2 as the gateway interface for VSI vpnb.

[SwitchA] vsi vpnb

[SwitchA-vsi-vpnb] gateway vsi-interface 2

[SwitchA-vsi-vpnb] quit

# Configure an IPv6 static route. Set the destination address to 3::/64 and the next hop to 1::2.

[SwitchA] ipv6 route-static 3:: 64 1::2

6.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] vxlan 20

[SwitchB-vsi-vpnb-vxlan-20] quit

[SwitchB-vsi-vpnb] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch A and Switch C.

[SwitchB] interface loopback 0

[SwitchB-Loopback0] ip address 2.2.2.2 255.255.255.255

[SwitchB-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 2.

[SwitchB] interface tunnel 2 mode vxlan

[SwitchB-Tunnel2] source 2.2.2.2

[SwitchB-Tunnel2] destination 1.1.1.1

[SwitchB-Tunnel2] quit

# Create a VXLAN tunnel to Switch C. The tunnel interface name is Tunnel 3.

[SwitchB] interface tunnel 3 mode vxlan

[SwitchB-Tunnel3] source 2.2.2.2

[SwitchB-Tunnel3] destination 3.3.3.3

[SwitchB-Tunnel3] quit

# Assign Tunnel 2 and Tunnel 3 to VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] tunnel 2

[SwitchB-vsi-vpna-vxlan-10] tunnel 3

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Assign Tunnel 2 and Tunnel 3 to VXLAN 20.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] vxlan 20

[SwitchB-vsi-vpnb-vxlan-20] tunnel 2

[SwitchB-vsi-vpnb-vxlan-20] tunnel 3

[SwitchB-vsi-vpnb-vxlan-20] quit

[SwitchB-vsi-vpnb] quit

# Create VSI-interface 1 and assign the interface an IPv6 address.

[SwitchB] interface vsi-interface 1

[SwitchB-Vsi-interface1] ipv6 address 1::2/64

[SwitchB-Vsi-interface1] quit

# Create VSI-interface 2 and assign the interface an IPv6 address.

[SwitchB] interface vsi-interface 2

[SwitchB-Vsi-interface2] ipv6 address 4::2/64

[SwitchB-Vsi-interface2] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] gateway vsi-interface 1

[SwitchB-vsi-vpna] quit

# Specify VSI-interface 2 as the gateway interface for VSI vpnb.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] gateway vsi-interface 2

[SwitchB-vsi-vpnb] quit

7.     Configure Switch C:

# Enable L2VPN.

<SwitchC> system-view

[SwitchC] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchC] vsi vpnb

[SwitchC-vsi-vpnb] vxlan 20

[SwitchC-vsi-vpnb-vxlan-20] quit

[SwitchC-vsi-vpnb] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnels to Switch A and Switch B.

[SwitchC] interface loopback 0

[SwitchC-Loopback0] ip address 3.3.3.3 255.255.255.255

[SwitchC-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 1.

[SwitchC] interface tunnel 1 mode vxlan

[SwitchC-Tunnel1] source 3.3.3.3

[SwitchC-Tunnel1] destination 1.1.1.1

[SwitchC-Tunnel1] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 3.

[SwitchC] interface tunnel 3 mode vxlan

[SwitchC-Tunnel3] source 3.3.3.3

[SwitchC-Tunnel3] destination 2.2.2.2

[SwitchC-Tunnel3] quit

# Assign Tunnel 1 and Tunnel 3 to VXLAN 10.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] vxlan 10

[SwitchC-vsi-vpna-vxlan-10] tunnel 1

[SwitchC-vsi-vpna-vxlan-10] tunnel 3

[SwitchC-vsi-vpna-vxlan-10] quit

[SwitchC-vsi-vpna] quit

# Assign Tunnel 1 and Tunnel 3 to VXLAN 20.

[SwitchC] vsi vpnb

[SwitchC-vsi-vpnb] vxlan 20

[SwitchC-vsi-vpnb-vxlan-20] tunnel 1

[SwitchC-vsi-vpnb-vxlan-20] tunnel 3

[SwitchC-vsi-vpnb-vxlan-20] quit

[SwitchC-vsi-vpnb] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 4.

[SwitchC] interface twenty-fivegige 1/0/1

[SwitchC-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchC-Twenty-FiveGigE1/0/1] port trunk permit vlan 4

[SwitchC-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 4

# Map Ethernet service instance 1000 to VSI vpnb.

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpnb

[SwitchC-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchC-Twenty-FiveGigE1/0/1] quit

# Enable dynamic ND entry synchronization for distributed VXLAN IP gateways.

[SwitchC] ipv6 nd distributed-gateway dynamic-entry synchronize

# Create VSI-interface 1 and assign the interface an IPv6 anycast address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchC] interface vsi-interface 1

[SwitchC-Vsi-interface1] ipv6 address 1::1/64 anycast

# Specify VSI-interface 1 as a distributed gateway and enable local ND proxy on the interface.

[SwitchC-Vsi-interface1] distributed-gateway local

[SwitchC-Vsi-interface1] local-proxy-nd enable

[SwitchC-Vsi-interface1] quit

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchC] vsi vpna

[SwitchC-vsi-vpna] gateway vsi-interface 1

[SwitchC-vsi-vpna] quit

# Create VSI-interface 2 and assign the interface an IPv6 anycast address. The IP address will be used as the gateway address for VXLAN 20.

[SwitchC] interface vsi-interface 2

[SwitchC-Vsi-interface2] ipv6 address 4::1/64 anycast

# Specify VSI-interface 2 as a distributed gateway and enable local ND proxy on the interface.

[SwitchC-Vsi-interface2] distributed-gateway local

[SwitchC-Vsi-interface2] local-proxy-nd enable

[SwitchC-Vsi-interface2] quit

# Specify VSI-interface 2 as the gateway interface for VSI vpnb.

[SwitchC] vsi vpnb

[SwitchC-vsi-vpnb] gateway vsi-interface 2

[SwitchC-vsi-vpnb] quit

# Configure an IPv6 static route. Set the destination address to 3::/64 and the next hop to 4::2.

[SwitchC] ipv6 route-static 3:: 64 4::2

Verifying the configuration

1.     Verify the distributed VXLAN IP gateway settings on Switch A:

# Verify that the VXLAN tunnel interfaces are up on Switch A.

[SwitchA] display interface tunnel 2

Tunnel2

Current state: UP

Line protocol state: UP

Description: Tunnel2 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 1.1.1.1, destination 3.3.3.3

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that the VSI interfaces are up.

[SwitchA] display interface vsi-interface 1

Vsi-interface1

Current state: UP

Line protocol state: UP

Description: Vsi-interface1 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1444

Internet protocol processing: Disabled

IP packet frame type: Ethernet II, hardware address: 0011-2200-0102

IPv6 packet frame type: Ethernet II, hardware address: 0011-2200-0102

Physical: Unknown, baudrate: 1000000 kbps

Last clearing of counters: Never

Input (total):  0 packets, 0 bytes

Output (total):  0 packets, 0 bytes

# Verify that the VXLAN tunnels have been assigned to the VXLANs, and the VSI interfaces are the gateway interfaces for the VSIs.

[SwitchA] display l2vpn vsi verbose

VSI Name: vpna

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  Gateway Interface       : VSI-interface 1

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

  ACs:

     AC                               Link ID    State    Type

     WGE1/0/1 srv1000                 0          Up       Manual

 

VSI Name: vpnb

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  Gateway Interface       : VSI-interface 2

  VXLAN ID                : 20

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

# Verify that Switch A has created neighbor entries for the VMs.

[SwitchA] display ipv6 neighbors all

Type: S-Static    D-Dynamic    O-Openflow     R-Rule    I-Invalid

IPv6 address                   Link layer     VID  Interface      State T  Age

1::2                           3c8c-400d-867a 0    Tunnel1        STALE D  7

1::100                         0001-0000-0047 0    0              STALE D  22

4::400                         0002-0000-0047 1    Tunnel2        REACH D  5

FE80::201:FF:FE00:47           0001-0000-0047 0    Tunnel1        REACH D  30

FE80::202:FF:FE00:0            0002-0000-0000 1    Tunnel2        REACH D  27

FE80::202:FF:FE00:47           0002-0000-0047 0    0              DELAY D  5

# Verify that Switch A has created FIB entries for the VMs.

[SwitchA] display ipv6 fib 4::400

Destination count: 1 FIB entry count: 1

Flag:

  U:Usable    G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

Destination: 4::400                                         Prefix length: 128

Nexthop    : 4::400                                         Flags: UH

Time stamp : 0x2c                                           Label: Null

Interface  : Tunnel2                                        Token: Invalid

[SwitchA] display ipv6 fib 3::300

Destination count: 1 FIB entry count: 1

Flag:

  U:Usable    G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

Destination: 3::                                            Prefix length: 40

Nexthop    : 1::2                                           Flags: USGR

Time stamp : 0x23                                           Label: Null

Interface  : Tunnel1                                        Token: Invalid

2.     Verify the configuration on the border gateway Switch B:

# Verify that the VXLAN tunnel interfaces are up on Switch B.

[SwitchB] display interface tunnel 2

Tunnel2

Current state: UP

Line protocol state: UP

Description: Tunnel2 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 2.2.2.2, destination 1.1.1.1

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that the VSI interfaces are up.

[SwitchB] display interface Vsi-interface 1

Vsi-interface1

Current state: UP

Line protocol state: UP

Description: Vsi-interface1 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1444

Internet protocol processing: Disabled

IP packet frame type: Ethernet II, hardware address: 0011-2200-0102

IPv6 packet frame type: Ethernet II, hardware address: 0011-2200-0102

Physical: Unknown, baudrate: 1000000 kbps

Last clearing of counters: Never

Input (total):  0 packets, 0 bytes

Output (total):  0 packets, 0 bytes

# Verify that the VXLAN tunnels have been assigned to the VXLANs, and the VSI interfaces are the gateway interfaces for the VSIs.

[SwitchB] display l2vpn vsi name vpna verbose

VSI Name: vpna

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  Gateway interface       : VSI-interface 1

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

# Verify that Switch B has created neighbor entries for the VMs.

[SwitchB] display ipv6 neighbors all

Type: S-Static    D-Dynamic    O-Openflow     R-Rule    I-Invalid

IPv6 address                   Link layer     VID  Interface      State T  Age

3::300                         0003-0000-0047 20   Vlan20         DELAY D  3

FE80::203:FF:FE00:47           0003-0000-0047 20   Vlan20         STALE D  222

1::100                         0001-0000-0047 0    Tunnel2        STALE D  232

4::400                         0002-0000-0047 1    Tunnel3        REACH D  3

FE80::201:FF:FE00:0            0001-0000-0000 0    Tunnel2        STALE D  237

FE80::201:FF:FE00:47           0001-0000-0047 20   Vlan20         STALE D  222

FE80::202:FF:FE00:0            0002-0000-0000 1    Tunnel3        STALE D  345

# Verify that Switch B has created FIB entries for the VMs.

[SwitchB] display ipv6 fib 1::100

Destination count: 1 FIB entry count: 1

Flag:

  U:Usable    G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

Destination: 1::100                                         Prefix length: 128

Nexthop    : 1::100                                         Flags: UH

Time stamp : 0x21                                           Label: Null

Interface  : Tunnel2                                        Token: Invalid

[SwitchB] display ipv6 fib 4::400

Destination count: 1 FIB entry count: 1

Flag:

  U:Usable    G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

Destination: 4::                                            Prefix length: 64

Nexthop    : ::                                             Flags: U

Time stamp : 0x19                                           Label: Null

Interface  : Tunnel3                                        Token: Invalid

3.     Verify the network connectivity for the VMs:

# Verify that VM 1 and VM 2 can ping each other. (Details not shown.)

# Verify that VM 1, VM 2, and VLAN-interface 20 (3::300) on Switch E can ping each other. (Details not shown.)


Configuring VXLAN-DCI

About VXLAN-DCI

VXLAN tunnels are used only for intra-data center connection. To provide Layer 2 connectivity between data centers over an IP transport network, you can use VXLAN data center interconnect (VXLAN-DCI) tunnels.

VXLAN-DCI network model

As shown in Figure 23, the VXLAN-DCI network contains edge devices (EDs) located at the edge of the transport network and VTEPs located at the data center sites. VXLAN tunnels are established between VTEPs and EDs, and VXLAN-DCI tunnels are established between EDs. VXLAN-DCI tunnels use VXLAN encapsulation. Each ED de-encapsulates received VXLAN packets and then re-encapsulates them based on the destination before forwarding them through a VXLAN or VXLAN-DCI tunnel.

Figure 23 VXLAN-DCI network model

 

Working mechanisms

In a VXLAN-DCI network, VTEPs use MAC address entries to perform Layer 2 forwarding for VXLANs, and EDs perform Layer 3 forwarding based on ARP or ND entries.

As shown in Figure 24, a VSI interface uses the same IP address to provide gateway services for a VXLAN on different EDs. Local proxy ARP or local ND proxy is enabled on the EDs.

Figure 24 VXLAN-DCI working mechanisms

 

Intra-VXLAN traffic forwarding between sites

As shown in Figure 24, the network uses the following process to forward traffic in a VXLAN between sites (for example, from VM 1 to VM 4 in VXLAN 10):

1.     VM 1 sends an ARP request to obtain the MAC address of VM 4.

2.     VTEP 1 learns the MAC address of VM 1 and floods the ARP request in VXLAN 10.

3.     ED 1 performs the following operations:

a.     Removes the VXLAN encapsulation of the ARP request.

b.     Creates an ARP entry for VM 1 and replies with the MAC address of VSI-interface 10 (the gateway interface for VXLAN 10). The ARP reply is sent to VTEP 1.

4.     VTEP 1 removes the VXLAN encapsulation of the ARP reply, learns the MAC address of ED 1, and forwards the ARP reply to VM 1.

5.     VM 1 creates an ARP entry for VM 4. The MAC address in the entry is the MAC address of VSI-interface 10 on ED 1.

6.     ED 1 replaces the sender MAC address of the request with the MAC address of VSI-interface 10 on ED 1, and then floods the request to the remote EDs in VXLAN 10.

7.     ED 2 performs the following operations:

a.     Removes the VXLAN encapsulation of the ARP request.

b.     Creates an ARP entry for VM 1. The entry contains VM 1's IP address (10.1.1.100), the MAC address of VSI-interface 10 on ED 1, and the incoming VXLAN-DCI tunnel interface.

c.     Replaces the sender MAC address of the request with the MAC address of VSI-interface 10 on ED 2, and then floods the request on all VXLAN tunnels of VXLAN 10.

8.     VTEP 2 removes the VXLAN encapsulation of the ARP request, learns the MAC address of ED 2, and floods the ARP request to the local site.

9.     VM 4 creates an ARP entry for VM 1, and then sends a reply to VTEP 2. The MAC address in the ARP entry is the MAC address of VSI-interface 10 on ED 2.

10.     VTEP 2 looks up the MAC address table and forwards the ARP reply to ED 2.

11.     ED 2 performs the following operations:

a.     Removes the VXLAN encapsulation of the ARP reply.

b.     Creates an ARP entry for VM 4

c.     Replaces the sender MAC address of the ARP reply with the MAC address of VSI-interface 10 on ED 2, and sends the reply to ED 1.

12.     ED 1 performs the following operations:

a.     Removes the VXLAN encapsulation of the ARP reply.

b.     Creates an ARP entry for VM 4. The entry contains VM 4's IP address (10.1.1.200), the MAC address of VSI-interface 10 on ED 2, and the incoming VXLAN-DCI tunnel interface.

13.     For subsequent traffic between VM 1 and VM 4, the VTEPs and EDs use their respective MAC address tables and ARP tables to make the forwarding decision.

Inter-VXLAN traffic forwarding between sites

As shown in Figure 24, the network uses the following process to forward traffic between VXLANs (for example, from VM 1 in VXLAN 10 to VM 5 in VXLAN 20):

1.     VM 1 sends an ARP request to obtain the MAC address of the gateway at 10.1.1.1.

2.     VTEP 1 learns the MAC address of VM 1 and floods the ARP request in VXLAN 10.

3.     ED 1 performs the following operations:

a.     Removes the VXLAN encapsulation of the ARP request.

b.     Creates an ARP entry for VM 1 and replies with the MAC address of VSI-interface 10 (the gateway interface for VXLAN 10). The ARP reply is sent to VTEP 1.

4.     VTEP 1 removes the VXLAN encapsulation of the ARP reply, learns the MAC address of ED 1, and forwards the ARP reply to VM 1.

5.     VM 1 creates an ARP entry for the gateway and sends the packet destined for VM 5 to VTEP 1.

6.     VTEP 1 looks up the MAC address table and forwards the packet to ED 1.

7.     ED 1 performs the following operations:

a.     Removes the VXLAN encapsulation of the packet and looks up the routing table based on the destination IP address.

b.     Sends an ARP request to the local VTEP and remote ED of VXLAN 20 to obtain the MAC address of VM 5. In the ARP request, the sender IP address is 20.1.1.1, and the sender MAC address is the MAC address of VSI-interface 20 on ED 1.

8.     ED 2 performs the following operations:

a.     Removes the VXLAN encapsulation of the ARP request.

b.     Replaces the sender MAC address of the request with the MAC address of VSI-interface 20 on ED 2, and then floods the request on all VXLAN tunnels of VXLAN 20.

9.     VTEP 2 removes the VXLAN encapsulation of the ARP request, learns the MAC address of ED 2, and floods the ARP request to the local site.

10.     VM 5 creates an ARP entry for ED 2 and sends a reply to VTEP 2. The MAC address in the ARP entry is the MAC address of VSI-interface 20 on ED 2.

11.     VTEP 2 looks up the MAC address table and forwards the ARP reply to ED 2.

12.     ED 2 performs the following operations:

a.     Removes the VXLAN encapsulation of the ARP reply.

b.     Creates an ARP entry for VM 5.

c.     Sends a gratuitous ARP packet to ED 1. In the packet, the sender and target IP address is 20.1.1.200, and the sender MAC address is the MAC address of VSI-interface 20 on ED 2.

13.     ED 1 performs the following operations:

a.     Removes the VXLAN encapsulation of the packet.

b.     Creates an ARP entry for VM 5. The entry contains VM 5's IP address (20.1.1.200), the MAC address of VSI-interface 20 on ED 2, and the incoming VXLAN-DCI tunnel interface.

14.     For subsequent traffic between VM 1 and VM 5, the VTEPs and EDs use their respective MAC address tables and ARP tables to make the forwarding decision.

VXLAN-DCI tasks at a glance

To configure a VXLAN-DCI network, perform the following tasks:

·     Configure routing protocols on the transport network for EDs to reach one another.

·     Configure routing protocols on EDs and VTEPs for them to reach one another.

·     Configure VXLANs on EDs and VTEPs, and set up VXLAN tunnels between EDs and VTEPs.

·     Configure VXLAN-DCI on EDs, and set up VXLAN-DCI tunnels between EDs.

To configure VXLAN-DCI on an ED, perform the following tasks:

1.     Configuring the VXLAN hardware resource mode

For more information, see "Setting the VXLAN hardware resource mode."

2.     Creating a VXLAN on a VSI

For more information, see "Creating a VXLAN on a VSI."

3.     Configuring a VXLAN-DCI tunnel

4.     Assigning VXLAN-DCI tunnels to a VXLAN

5.     Configuring a gateway interface on an ED

6.     Configuring optional parameters for a VSI interface

For more information, see "Configuring a VSI interface."

7.     Configuring VXLAN packet parameters

¡     Setting the destination UDP port number of VXLAN packets

For more information, see "Setting the destination UDP port number of VXLAN packets."

¡     Configuring VXLAN packet check

For more information, see "Configuring VXLAN packet check."

8.     Enabling packet statistics for VXLAN-DCI

¡     Enabling packet statistics for a VSI

For more information, see "Enabling packet statistics for a VSI."

¡     Enabling packet statistics for manually created VXLAN-DCI tunnels

 

 

NOTE:

This chapter covers only the VXLAN-DCI configuration tasks available on an ED. For more information about basic VXLAN configuration and VXLAN IP gateway configuration, see "Configuring basic VXLAN features" and "Configuring VXLAN IP gateways."

 

Configuring a VXLAN-DCI tunnel

Restrictions and guidelines

You must specify the tunnel source and destination IP addresses when you manually set up a VXLAN-DCI tunnel between EDs. As a best practice, do not configure the same tunnel source and destination addresses for different VXLAN-DCI tunnels on an ED.

This task provides basic VXLAN-DCI tunnel configuration. For more information about tunnel configuration and commands, see Layer 3—IP Services Configuration Guide and Layer 3—IP Services Command Reference.

Procedure

1.     Enter system view.

system-view

2.     Create a VXLAN-DCI tunnel interface and enter tunnel interface view.

interface tunnel tunnel-number mode vxlan-dci

The endpoints of a tunnel must use the same tunnel mode.

3.     Specify a source address for the tunnel. Choose one of the following tasks:

¡     Specify a source IP address.

source ipv4-address

The specified IP address is used as the source IP address in the outer IP header of tunneled VXLAN packets.

¡     Specify a source interface.

source interface-type interface-number

The IP address of the specified interface is used as the source IP address in the outer IP header of tunneled VXLAN packets.

By default, no source address is specified for a tunnel.

4.     Specify a destination IP address for the tunnel.

destination ipv4-address

By default, no destination IP address is specified for a tunnel.

Specify the remote ED's IP address. This IP address will be the destination IP address in the outer IP header of tunneled VXLAN packets.

Assigning VXLAN-DCI tunnels to a VXLAN

About VXLAN-DCI tunnel assignment

To provide connectivity for a VXLAN between two EDs, you must assign the VXLAN-DCI tunnel between the EDs to the VXLAN.

You can assign multiple VXLAN-DCI tunnels to a VXLAN, and configure a VXLAN-DCI tunnel to trunk multiple VXLANs. EDs use the VXLAN ID in VXLAN packets to identify the VXLAN. For a unicast-mode VXLAN, the system floods unknown unicast, multicast, and broadcast traffic to each VXLAN-DCI tunnel associated with the VXLAN.

Restrictions and guidelines

For full connectivity in the VXLAN, make sure the VXLAN contains the VXLAN-DCI tunnel between each pair of EDs in the VXLAN.

Procedure

1.     Enter system view.

system-view

2.     Enter VSI view.

vsi vsi-name

3.     Enter VXLAN view.

vxlan vxlan-id

4.     Assign VXLAN-DCI tunnels to the VXLAN.

tunnel { tunnel-number | all }

By default, a VXLAN does not contain any VXLAN-DCI tunnels.

Configuring a gateway interface on an ED

1.     Enter system view.

system-view

2.     Create a VSI interface and enter VSI interface view.

interface vsi-interface vsi-interface-id

3.     Assign an IP address to the VSI interface.

IPv4:

ip address ip-address { mask | mask-length } [ sub ]

IPv6:

See IPv6 basics in Layer 3—IP Services Configuration Guide.

By default, no IP address is assigned to a VSI interface.

4.     Specify the VSI interface as a distributed gateway.

distributed-gateway local

By default, a VSI interface is not a distributed gateway.

5.     Enable local proxy ARP or local ND proxy.

IPv4:

local-proxy-arp enable [ ip-range startIP to endIP ]

By default, local proxy ARP is disabled.

For more information about this command, see proxy ARP commands in Layer 3—IP Services Command Reference.

IPv6:

local-proxy-nd enable

By default, local ND proxy is disabled.

For more information about this command, see IPv6 basics commands in Layer 3—IP Services Command Reference.

6.     Bring up the VSI interface.

undo shutdown

By default, a VSI interface is up.

7.     Return to system view.

quit

8.     Enter VSI view.

vsi vsi-name

9.     Specify the VSI interface as the gateway interface for the VSI.

gateway vsi-interface vsi-interface-id

By default, no gateway interface is specified for a VSI.

Enabling packet statistics for manually created VXLAN-DCI tunnels

About packet statistics of VXLAN-DCI tunnels

Perform this task to enable packet statistics for manually created VXLAN-DCI tunnels on a per-tunnel interface basis. To display the packet statistics for a VXLAN-DCI tunnel, use the display interface tunnel command in any view. To clear the packet statistics for a VXLAN-DCI tunnel, use the reset counters interface tunnel command in user view.

Procedure

1.     Enter system view.

system-view

2.     Enter VXLAN-DCI tunnel interface view.

interface tunnel tunnel-number [ mode vxlan-dci ]

3.     Enable packet statistics for the tunnel.

statistics enable

By default, the packet statistics feature is disabled for manually created VXLAN-DCI tunnels.

Display and maintenance commands for VXLAN-DCI

Execute display commands in any view and reset commands in user view.

 

Task

Command

Display information about VSIs.

display l2vpn vsi [ name vsi-name ] [ verbose ]

Display information about tunnel interfaces.

display interface [ tunnel [ number ] ] [ brief [ description | down ] ]

Display VXLAN-DCI tunnel information for VXLANs.

display vxlan tunnel [ vxlan-id vxlan-id ]

Clear packet statistics on VSIs.

reset l2vpn statistics vsi [ name vsi-name ]

 

 

NOTE:

For more information about the display interface tunnel command, see tunneling commands in Layer 3—IP Services Command Reference.

 

VXLAN-DCI configuration examples

Example: Configuring a basic VXLAN-DCI network

Network configuration

As shown in Figure 25:

·     Configure VXLAN 10 and VXLAN 20 as unicast-mode VXLANs on Switch A, Switch B, Switch D, and Switch E to provide connectivity for the VMs across the data center sites.

·     Configure Switch A and Switch E as VTEPs, and Switch B and Switch D as EDs.

·     Manually establish VXLAN tunnels and VXLAN-DCI tunnels, and assign the tunnels to the VXLANs.

Figure 25 Network diagram

Procedure

 

1.     Set the VXLAN hardware resource mode on Switch B and Switch D, and reboot the switches. This step uses Switch B as an example.

[SwitchB] hardware-resource vxlan l3gw

Do you want to change the specified hardware resource working mode? [Y/N]:y

The hardware resource working mode is changed, please save the configuration and

 reboot the system to make it effective.

[SwitchB] quit

<SwitchB> reboot

Start to check configuration with next startup configuration file, please wait..

.......DONE!

Current configuration may be lost after the reboot, save current configuration?

[Y/N]:y

This command will reboot the device. Continue? [Y/N]:y

2.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

3.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 25. (Details not shown.)

# Configure OSPF on Switches A through E. (Details not shown.)

# Configure OSPF to advertise routes to networks 10.1.1.0/24 and 10.1.2.0/24 on Switch B and Switch D. (Details not shown.)

4.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchA] vsi vpnb

[SwitchA-vsi-vpnb] vxlan 20

[SwitchA-vsi-vpnb-vxlan-20] quit

[SwitchA-vsi-vpnb] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnel to Switch B.

[SwitchA] interface loopback 0

[SwitchA-Loopback0] ip address 1.1.1.1 255.255.255.255

[SwitchA-Loopback0] quit

# Create a VXLAN tunnel to Switch B. The tunnel interface name is Tunnel 1.

[SwitchA] interface tunnel 1 mode vxlan

[SwitchA-Tunnel1] source 1.1.1.1

[SwitchA-Tunnel1] destination 2.2.2.2

[SwitchA-Tunnel1] quit

# Assign Tunnel 1 to VXLAN 10.

[SwitchA] vsi vpna

[SwitchA-vsi-vpna] vxlan 10

[SwitchA-vsi-vpna-vxlan-10] tunnel 1

[SwitchA-vsi-vpna-vxlan-10] quit

[SwitchA-vsi-vpna] quit

# Assign Tunnel 1 to VXLAN 20.

[SwitchA] vsi vpnb

[SwitchA-vsi-vpnb] vxlan 20

[SwitchA-vsi-vpnb-vxlan-20] tunnel 1

[SwitchA-vsi-vpnb-vxlan-20] quit

[SwitchA-vsi-vpnb] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 100.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchA-Twenty-FiveGigE1/0/1] port trunk permit vlan 100

[SwitchA-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 100

# Map Ethernet service instance 1000 on Twenty-FiveGigE 1/0/1 to VSI vpna.

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchA-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/1] quit

# On Twenty-FiveGigE 1/0/2, create Ethernet service instance 1000 to match VLAN 200.

[SwitchA] interface twenty-fivegige 1/0/2

[SwitchA-Twenty-FiveGigE1/0/2] service-instance 1000

[SwitchA-Twenty-FiveGigE1/0/2-srv1000] encapsulation s-vid 200

# Map Ethernet service instance 1000 on Twenty-FiveGigE 1/0/2 to VSI vpnb.

[SwitchA-Twenty-FiveGigE1/0/2-srv1000] xconnect vsi vpnb

[SwitchA-Twenty-FiveGigE1/0/2-srv1000] quit

[SwitchA-Twenty-FiveGigE1/0/2] quit

5.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] vxlan 20

[SwitchB-vsi-vpnb-vxlan-20] quit

[SwitchB-vsi-vpnb] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnel to Switch A and the VXLAN-DCI tunnel to Switch D.

[SwitchB] interface loopback 0

[SwitchB-Loopback0] ip address 2.2.2.2 255.255.255.255

[SwitchB-Loopback0] quit

# Create a VXLAN tunnel to Switch A. The tunnel interface name is Tunnel 1.

[SwitchB] interface tunnel 1 mode vxlan

[SwitchB-Tunnel1] source 2.2.2.2

[SwitchB-Tunnel1] destination 1.1.1.1

[SwitchB-Tunnel1] quit

# Create a VXLAN-DCI tunnel to Switch D. The tunnel interface name is Tunnel 2.

[SwitchB] interface tunnel 2 mode vxlan-dci

[SwitchB-Tunnel2] source 2.2.2.2

[SwitchB-Tunnel2] destination 3.3.3.3

[SwitchB-Tunnel2] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 10.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] vxlan 10

[SwitchB-vsi-vpna-vxlan-10] tunnel 1

[SwitchB-vsi-vpna-vxlan-10] tunnel 2

[SwitchB-vsi-vpna-vxlan-10] quit

[SwitchB-vsi-vpna] quit

# Assign Tunnel 1 and Tunnel 2 to VXLAN 20.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] vxlan 20

[SwitchB-vsi-vpnb-vxlan-20] tunnel 1

[SwitchB-vsi-vpnb-vxlan-20] tunnel 2

[SwitchB-vsi-vpnb-vxlan-20] quit

[SwitchB-vsi-vpnb] quit

# Create VSI-interface 1 and assign the interface an IP address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchB] interface vsi-interface 1

[SwitchB-Vsi-interface1] ip address 10.1.1.1 255.255.255.0

# Specify VSI-interface 1 as a distributed gateway and enable local proxy ARP on the interface.

[SwitchB-Vsi-interface1] distributed-gateway local

[SwitchB-Vsi-interface1] local-proxy-arp enable

[SwitchB-Vsi-interface1] quit

# Create VSI-interface 2 and assign the interface an IP address. The IP address will be used as the gateway address for VXLAN 20.

[SwitchB] interface vsi-interface 2

[SwitchB-Vsi-interface2] ip address 10.1.2.1 255.255.255.0

# Specify VSI-interface 2 as a distributed gateway and enable local proxy ARP on the interface.

[SwitchB-Vsi-interface2] distributed-gateway local

[SwitchB-Vsi-interface2] local-proxy-arp enable

[SwitchB-Vsi-interface2] quit

# Enable dynamic ARP entry synchronization for distributed VXLAN IP gateways.

[SwitchB] arp distributed-gateway dynamic-entry synchronize

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchB] vsi vpna

[SwitchB-vsi-vpna] gateway vsi-interface 1

[SwitchB-vsi-vpna] quit

# Specify VSI-interface 2 as the gateway interface for VSI vpnb.

[SwitchB] vsi vpnb

[SwitchB-vsi-vpnb] gateway vsi-interface 2

[SwitchB-vsi-vpnb] quit

6.     Configure Switch D:

# Enable L2VPN.

<SwitchD> system-view

[SwitchD] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchD] vsi vpna

[SwitchD-vsi-vpna] vxlan 10

[SwitchD-vsi-vpna-vxlan-10] quit

[SwitchD-vsi-vpna] quit

# Create VSI vpnb and VXLAN 20.

[SwitchD] vsi vpnb

[SwitchD-vsi-vpnb] vxlan 20

[SwitchD-vsi-vpnb-vxlan-20] quit

[SwitchD-vsi-vpnb] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN-DCI tunnel to Switch B and the VXLAN tunnel to Switch E.

[SwitchD] interface loopback 0

[SwitchD-Loopback0] ip address 3.3.3.3 255.255.255.255

[SwitchD-Loopback0] quit

# Create a VXLAN tunnel to Switch E. The tunnel interface name is Tunnel 1.

[SwitchD] interface tunnel 1 mode vxlan

[SwitchD-Tunnel1] source 3.3.3.3

[SwitchD-Tunnel1] destination 4.4.4.4

[SwitchD-Tunnel1] quit

# Create a VXLAN-DCI tunnel to Switch B. The tunnel interface name is Tunnel 2.

[SwitchD] interface tunnel 2 mode vxlan-dci

[SwitchD-Tunnel2] source 3.3.3.3

[SwitchD-Tunnel2] destination 2.2.2.2

[SwitchD-Tunnel2] quit

#Assign Tunnel 1 and Tunnel 2 to VXLAN 10.

[SwitchD] vsi vpna

[SwitchD-vsi-vpna] vxlan 10

[SwitchD-vsi-vpna-vxlan-10] tunnel 1

[SwitchD-vsi-vpna-vxlan-10] tunnel 2

[SwitchD-vsi-vpna-vxlan-10] quit

[SwitchD-vsi-vpna] quit

# Assign Tunnel 2 to VXLAN 20.

[SwitchD] vsi vpnb

[SwitchD-vsi-vpnb] vxlan 20

[SwitchD-vsi-vpnb-vxlan-20] tunnel 2

[SwitchD-vsi-vpnb-vxlan-20] quit

[SwitchD-vsi-vpnb] quit

# Create VSI-interface 1 and assign the interface an IP address. The IP address will be used as the gateway address for VXLAN 10.

[SwitchD] interface vsi-interface 1

[SwitchD-Vsi-interface1] ip address 10.1.1.1 255.255.255.0

# Specify VSI-interface 1 as a distributed gateway and enable local proxy ARP on the interface.

[SwitchD-Vsi-interface1] distributed-gateway local

[SwitchD-Vsi-interface1] local-proxy-arp enable

[SwitchD-Vsi-interface1] quit

# Create VSI-interface 2 and assign the interface an IP address. The IP address will be used as the gateway address for VXLAN 20.

[SwitchD] interface vsi-interface 2

[SwitchD-Vsi-interface2] ip address 10.1.2.1 255.255.255.0

# Specify VSI-interface 2 as a distributed gateway and enable local proxy ARP on the interface.

[SwitchD-Vsi-interface2] distributed-gateway local

[SwitchD-Vsi-interface2] local-proxy-arp enable

[SwitchD-Vsi-interface2] quit

# Enable dynamic ARP entry synchronization for distributed VXLAN IP gateways.

[SwitchD] arp distributed-gateway dynamic-entry synchronize

# Specify VSI-interface 1 as the gateway interface for VSI vpna.

[SwitchD] vsi vpna

[SwitchD-vsi-vpna] gateway vsi-interface 1

[SwitchD-vsi-vpna] quit

# Specify VSI-interface 2 as the gateway interface for VSI vpnb.

[SwitchD] vsi vpnb

[SwitchD-vsi-vpnb] gateway vsi-interface 2

[SwitchD-vsi-vpnb] quit

7.     Configure Switch E:

# Enable L2VPN.

<SwitchE> system-view

[SwitchE] l2vpn enable

# Create VSI vpna and VXLAN 10.

[SwitchE] vsi vpna

[SwitchE-vsi-vpna] vxlan 10

[SwitchE-vsi-vpna-vxlan-10] quit

[SwitchE-vsi-vpna] quit

# Assign an IP address to Loopback 0. The IP address will be used as the source IP address of the VXLAN tunnel to Switch D.

[SwitchE] interface loopback 0

[SwitchE-Loopback0] ip address 4.4.4.4 255.255.255.255

[SwitchE-Loopback0] quit

# Create a VXLAN tunnel to Switch D. The tunnel interface name is Tunnel 1.

[SwitchE] interface tunnel 1 mode vxlan

[SwitchE-Tunnel1] source 4.4.4.4

[SwitchE-Tunnel1] destination 3.3.3.3

[SwitchE-Tunnel1] quit

# Assign Tunnel 1 to VXLAN 10.

[SwitchE] vsi vpna

[SwitchE-vsi-vpna] vxlan 10

[SwitchE-vsi-vpna-vxlan-10] tunnel 1

[SwitchE-vsi-vpna-vxlan-10] quit

[SwitchE-vsi-vpna] quit

# On Twenty-FiveGigE 1/0/1, create Ethernet service instance 1000 to match VLAN 100.

[SwitchE] interface twenty-fivegige 1/0/1

[SwitchE-Twenty-FiveGigE1/0/1] port link-type trunk

[SwitchE-Twenty-FiveGigE1/0/1] port trunk permit vlan 100

[SwitchE-Twenty-FiveGigE1/0/1] service-instance 1000

[SwitchE-Twenty-FiveGigE1/0/1-srv1000] encapsulation s-vid 100

# Map Ethernet service instance 1000 to VSI vpna.

[SwitchE-Twenty-FiveGigE1/0/1-srv1000] xconnect vsi vpna

[SwitchE-Twenty-FiveGigE1/0/1-srv1000] quit

[SwitchE-Twenty-FiveGigE1/0/1] quit

Verifying the configuration

1.     Verify the VXLAN-DCI settings on the EDs. This example uses Switch B.

# Verify that the VXLAN and VXLAN-DCI tunnel interfaces are up on Switch B.

[SwitchB] display interface tunnel

Tunnel1

Current state: UP

Line protocol state: UP

Description: Tunnel1 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 2.2.2.2, destination 1.1.1.1

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

 

Tunnel2

Current state: UP

Line protocol state: UP

Description: Tunnel2 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 2.2.2.2, destination 3.3.3.3

Tunnel protocol/transport UDP_VXLAN_DCI/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that VSI-interface 1 and VSI-interface 2 are up.

[SwitchB] display interface vsi-interface

Vsi-interface1

Current state: UP

Line protocol state: UP

Description: Vsi-interface1 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1444

Internet address: 10.1.1.1/24 (primary)

IP packet frame type:PKTFMT_ETHNT_2, hardware address: 0011-2200-0102

IPv6 packet frame type:PKTFMT_ETHNT_2, hardware address: 0011-2200-0102

Physical: Unknown, baudrate: 1000000 kbps

Last clearing of counters: Never

Input (total):  0 packets, 0 bytes

Output (total):  0 packets, 0 bytes

 

Vsi-interface2

Current state: UP

Line protocol state: UP

Description: Vsi-interface2 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1444

Internet address: 10.1.2.1/24 (primary)

IP packet frame type:PKTFMT_ETHNT_2, hardware address: 0011-3300-0102

IPv6 packet frame type:PKTFMT_ETHNT_2, hardware address: 0011-3300-0102

Physical: Unknown, baudrate: 1000000 kbps

Last clearing of counters: Never

Input (total):  0 packets, 0 bytes

Output (total):  0 packets, 0 bytes

# Verify that the VXLAN and VXLAN-DCI tunnels have been assigned to VXLAN 10 and VXLAN 20, and the VSI interfaces are the gateway interfaces for their respective VSIs.

[SwitchB] display l2vpn vsi verbose

VSI Name: vpna

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  Gateway interface       : VSI-interface 1

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

 

VSI Name: vpnb

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  Gateway interface       : VSI-interface 2

  VXLAN ID                : 20

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

# Verify that Switch B has created ARP entries for the VMs.

[SwitchB] display arp

  Type: S-Static   D-Dynamic   O-Openflow   R-Rule   M-Multiport  I-Invalid

IP address       MAC address    VLAN/VSI  Interface/Link ID        Aging Type

11.1.1.4         000c-29c1-5e46 11        Vlan11                   19    D

10.1.1.11        0cda-41b5-cf09 0         Tunnel1                  20    D

10.1.1.12        0011-4400-0102 0         Tunnel2                  20    D

10.1.2.11        0cda-41b5-cf89 1         Tunnel1                  20    D

2.     Verify that VM 1, VM 2, and VM 3 can ping each other. (Details not shown.)


Configuring the VTEP as an OVSDB VTEP

About OVSDB VTEP

An H3C network virtualization controller can use the Open vSwitch Database (OVSDB) management protocol to deploy and manage VXLANs on VTEPs. To work with a controller, you must configure the VTEP as an OVSDB VTEP.

Working mechanisms

As shown in Figure 26, an OVSDB VTEP stores all of its VXLAN settings in the form of entries in an OVSDB database. The OVSDB database, OVSDB VTEP service, and the controller interact through the OVSDB server. The controller communicates with the OVSDB server through the OVSDB protocol to manage the OVSDB database. The OVSDB VTEP service reads and writes data in the OVSDB database through the OVSDB server.

The OVSDB VTEP service performs the following operations to manage the VXLAN settings on the VTEP:

·     Converts data in the OVSDB database into VXLAN configuration and deploys the configuration to the VTEP. For example, create or remove a VXLAN or VXLAN tunnel.

·     Adds site-facing interface information and the global source address of VXLAN tunnels to the OVSDB database. The information is reported to the controller by the OVSDB server.

Figure 26 OVSDB network model

 

Protocols and standards

RFC 7047, The Open vSwitch Database Management Protocol

Restrictions and guidelines: OVSDB VTEP configuration

You can configure a VTEP both at the CLI and through a controller. As a best practice, do not manually remove the VXLAN configuration issued by the controller.

OVSDB VTEP tasks at a glance

To configure OVSDB VTEPs, perform the following tasks:

1.     Setting up an OVSDB connection to a controller

¡     Configuring active SSL connection settings

¡     Configuring passive SSL connection settings

¡     Configuring active TCP connection settings

¡     Configuring passive TCP connection settings

2.     Enabling the OVSDB server

3.     Enabling the OVSDB VTEP service

4.     Specifying a global source address for VXLAN tunnels

5.     Specifying a VTEP access port

6.     Enabling flood proxy on multicast VXLAN tunnels

If you use a flood proxy server, you must enable flood proxy globally on multicast tunnels.

7.     (Optional.) Disabling the ACLs issued by the OVSDB controller

Prerequisites for OVSDB VTEP configuration

Before you configure the VTEP as an OVSDB VTEP, enable L2VPN by using the l2vpn enable command.

Before you set up SSL connections to controllers, you must configure SSL as described in Security Configuration Guide.

Setting up an OVSDB connection to a controller

About OVSDB connection types

The OVSDB server supports the following types of OVSDB connections:

·     Active SSL connection—The OVSDB server initiates an SSL connection to the controller.

·     Passive SSL connection—The OVSDB server accepts the SSL connection from the controller.

·     Active TCP connection—The OVSDB server initiates a TCP connection to the controller.

·     Passive TCP connection—The OVSDB server accepts the TCP connection from the controller.

Restrictions and guidelines for OVSDB controller connection setup

When you set up OVSDB connections, follow these restrictions and guidelines:

·     You can set up multiple OVSDB connections. For the device to establish the connections, you must enable the OVSDB server. You must disable and then re-enable the OVSDB server if it has been enabled.

·     You must specify the same PKI domain and CA certificate file for all active and passive SSL connections.

Prerequisites for OVSDB controller connection setup

Make sure you have configured a PKI domain before specifying it for SSL. For more information about configuring a PKI domain, see Security Configuration Guide.

Configuring active SSL connection settings

1.     Enter system view.

system-view

2.     Specify a PKI domain for SSL.

ovsdb server pki domain domain-name

By default, no PKI domain is specified for SSL.

3.     (Optional.) Specify a CA certificate file for SSL.

ovsdb server bootstrap ca-certificate ca-filename

By default, SSL uses the CA certificate file in the PKI domain.

If the specified CA certificate file does not exist, the device obtains a self-signed certificate from the controller. The obtained file uses the name specified for the ca-filename argument.

4.     Set up an active SSL connection.

ovsdb server ssl ip ip-address port port-number

By default, the device does not have active OVSDB SSL connections.

You can set up a maximum of eight OVSDB SSL connections.

Configuring passive SSL connection settings

1.     Enter system view.

system-view

2.     Specify a PKI domain for SSL.

ovsdb server pki domain domain-name

By default, no PKI domain is specified for SSL.

3.     (Optional.) Specify a CA certificate file for SSL.

ovsdb server bootstrap ca-certificate ca-filename

By default, SSL uses the CA certificate file in the PKI domain.

If the specified CA certificate file does not exist, the device obtains a self-signed certificate from the controller. The obtained file uses the name specified for the ca-filename argument.

4.     Enable the device to listen for SSL connection requests.

ovsdb server pssl [ port port-number ]

By default, the device does not listen for SSL connection requests.

You can specify only one port to listen for OVSDB SSL connection requests.

Configuring active TCP connection settings

1.     Enter system view.

system-view

2.     Set up an active TCP connection.

ovsdb server tcp ip ip-address port port-number

By default, the device does not have active OVSDB TCP connections.

You can set up a maximum of eight active OVSDB TCP connections.

Configuring passive TCP connection settings

1.     Enter system view.

system-view

2.     Enable the device to listen for TCP connection requests.

ovsdb server ptcp [ port port-number ] [ acl acl-number ]

By default, the device does not listen for TCP connection requests.

The acl acl-number option is available in Release 6555P02 and later.

You can specify only one port to listen for OVSDB TCP connection requests.

Enabling the OVSDB server

Prerequisites

Make sure you have complete OVSDB connection setup before you enable the OVSDB server. If you change OVSDB connection settings after the OVSDB server is enabled, you must disable and then re-enable the OVSDB server for the change to take effect.

Procedure

1.     Enter system view.

system-view

2.     Enable the OVSDB server.

ovsdb server enable

By default, the OVSDB server is disabled.

Enabling the OVSDB VTEP service

1.     Enter system view.

system-view

2.     Enable the OVSDB VTEP service.

vtep enable

By default, the OVSDB VTEP service is disabled.

Specifying a global source address for VXLAN tunnels

About the global VXLAN tunnel source address

The VTEP reports the global VXLAN tunnel source address to the controller for VXLAN tunnel setup.

Restrictions and guidelines

For correct VXLAN deployment and VTEP management, do not manually specify tunnel-specific source addresses for VXLAN tunnels if OVSDB is used.

Procedure

1.     Enter system view.

system-view

2.     Specify a global source address for VXLAN tunnels.

tunnel global source-address ipv4-address

By default, no global source address is specified for VXLAN tunnels.

Specifying a VTEP access port

About specifying a VTEP access port

For the controller to manage a site-facing interface, you must specify the interface as a VTEP access port.

Procedure

1.     Enter system view.

system-view

2.     Enter interface view.

interface interface-type interface-number

3.     Specify the interface as a VTEP access port.

vtep access port

By default, an interface is not a VTEP access port.

Enabling flood proxy on multicast VXLAN tunnels

About flood proxy on multicast VXLAN tunnels

If you use a flood proxy server, you must enable flood proxy globally on multicast tunnels. Then the multicast tunnels are converted into flood proxy tunnels. The VTEP sends broadcast, multicast, and unknown unicast traffic for a VXLAN to the flood proxy server through the tunnels. The flood proxy server then replicates and forwards flood traffic to remote VTEPs.

Restrictions and guidelines

Flood proxy is supported on multicast VXLAN tunnels only when the OVSDB controller is a NSX controller from VMware.

After you enable flood proxy on multicast VXLAN tunnels, if the controller issues VSI configuration, the system automatically disables ARP flood suppression on all VSIs issued by the controller. If the controller does not issue VSI configuration, the system does not automatically change the state of ARP flood suppression.

If you do not enable flood proxy on multicast VXLAN tunnels, the system does not automatically change the state of ARP flood suppression regardless of whether the controller issues VSI configuration.

Procedure

1.     Enter system view.

system-view

2.     Enable flood proxy on multicast VXLAN tunnels.

vxlan tunnel flooding-proxy

By default, flood proxy is disabled on multicast VXLAN tunnels.

Disabling the ACLs issued by the OVSDB controller

About disabling the ACLs issued by the OVSDB controller

Perform this task on a VTEP to disable all the ACLs issued by the OVSDB controller in order to save ACL resources on the VTEP.

Prerequisites

Before you perform this task, you must enable the OVSDB VTEP service by using the vtep enable command.

Procedure

1.     Enter system view.

system-view

2.     Disable the ACLs issued by the OVSDB controller.

vtep acl disable

By default, the ACLs issued by the OVSDB controller are enabled on a VTEP.

OVSDB VTEP configuration examples

Example: Configuring a unicast-mode VXLAN

Network configuration

As shown in Figure 27, configure the controller cluster to deploy unicast-mode VXLAN 10 to Switch A, Switch B, and Switch C to provide Layer 2 connectivity for the VMs across the network sites.

Figure 27 Network diagram

Procedure

 

1.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

2.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 27. (Details not shown.)

# Configure OSPF on all transport network switches (Switches A through D). (Details not shown.)

3.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Configure active TCP connection settings.

[SwitchA] ovsdb server tcp ip 10.0.2.15 port 6632

# Enable the OVSDB server.

[SwitchA] ovsdb server enable

# Enable the OVSDB VTEP service.

[SwitchA] vtep enable

# Assign an IP address to Loopback 0. Specify the IP address as the global source address for VXLAN tunnels.

[SwitchA] interface loopback 0

[SwitchA-LoopBack0] ip address 1.1.1.1 255.255.255.255

[SwitchA-LoopBack0] quit

[SwitchA] tunnel global source-address 1.1.1.1

# Specify site-facing interface Twenty-FiveGigE 1/0/1 as a VTEP access port.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] vtep access port

[SwitchA-Twenty-FiveGigE1/0/1] quit

4.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Configure active TCP connection settings.

[SwitchB] ovsdb server tcp 10.0.2.15 port 6632

# Enable the OVSDB server.

[SwitchB] ovsdb server enable

# Enable the OVSDB VTEP service.

[SwitchB] vtep enable

# Assign an IP address to Loopback 0. Specify the IP address as the global source address for VXLAN tunnels.

[SwitchB] interface loopback 0

[SwitchB-LoopBack0] ip address 2.2.2.2 255.255.255.255

[SwitchB-LoopBack0] quit

[SwitchB] tunnel global source-address 2.2.2.2

# Specify site-facing interface Twenty-FiveGigE 1/0/1 as a VTEP access port.

[SwitchB] interface twenty-fivegige 1/0/1

[SwitchB-Twenty-FiveGigE1/0/1] vtep access port

[SwitchB-Twenty-FiveGigE1/0/1] quit

5.     Configure Switch C:

# Enable L2VPN.

<SwitchC> system-view

[SwitchC] l2vpn enable

# Configure active TCP connection settings.

[SwitchC] ovsdb server tcp ip 10.0.2.15 port 6632

# Enable the OVSDB server.

[SwitchC] ovsdb server enable

# Enable the OVSDB VTEP service.

[SwitchC] vtep enable

# Assign an IP address to Loopback 0. Specify the IP address as the global source address for VXLAN tunnels.

[SwitchC] interface loopback 0

[SwitchC-LoopBack0] ip address 3.3.3.3 255.255.255.255

[SwitchC-LoopBack0] quit

[SwitchC] tunnel global source-address 3.3.3.3

# Specify site-facing interface Twenty-FiveGigE 1/0/1 as a VTEP access port.

[SwitchC] interface twenty-fivegige 1/0/1

[SwitchC-Twenty-FiveGigE1/0/1] vtep access port

[SwitchC-Twenty-FiveGigE1/0/1] quit

6.     Configure VXLAN settings on the controller. (Details not shown.)

Verifying the configuration

1.     Verify the VXLAN settings on the VTEPs. This example uses Switch A.

# Verify that the VXLAN tunnel interfaces on the VTEP are up.

[SwitchA] display interface tunnel 1

Tunnel1

Current state: UP

Line protocol state: UP

Description: Tunnel1 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: Disabled

Last clearing of counters: Never

Tunnel source 1.1.1.1, destination 2.2.2.2

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that the VXLAN tunnels have been assigned to the VXLAN.

[SwitchA] display l2vpn vsi verbose

VSI Name: evpn2014

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

  ACs:

    AC                               Link ID    State    Type

    WGE1/0/1 srv2                    0          Up       Manual

# Verify that the VTEP has learned the MAC addresses of remote VMs.

<SwitchA> display l2vpn mac-address

MAC Address    State     VSI Name                        Link ID/Name   Aging

cc3e-5f9c-6cdb Dynamic   evpn2014                        Tunnel1        Aging

cc3e-5f9c-23dc Dynamic   evpn2014                        Tunnel2        Aging

--- 2 mac address(es) found  ---

2.     Verify that VM 1, VM 2, and VM 3 can ping each other. (Details not shown.)

Example: Configuring flood proxy for a VXLAN

Network configuration

As shown in Figure 28:

·     Configure the controller cluster to deploy VXLAN 10 to Switch A, Switch B, and Switch C to provide Layer 2 connectivity for the VMs across the network sites.

·     Enable flood proxy for VXLAN 10.

·     Use the MAC address entries issued by the controller to direct traffic forwarding on Switch A, Switch B, and Switch C.

Figure 28 Network diagram

Procedure

 

1.     Create VLANs and VLAN interfaces on all devices. (Details not shown.)

2.     Configure IP addresses and unicast routing settings:

# Assign IP addresses to interfaces, as shown in Figure 28. (Details not shown.)

# Configure OSPF on all transport network switches (Switches A through D). (Details not shown.)

3.     Configure Switch A:

# Enable L2VPN.

<SwitchA> system-view

[SwitchA] l2vpn enable

# Configure active TCP connection settings.

[SwitchA] ovsdb server tcp ip 10.0.2.15 port 6632

# Enable the OVSDB server.

[SwitchA] ovsdb server enable

# Enable the OVSDB VTEP service.

[SwitchA] vtep enable

# Assign an IP address to Loopback 0.

[SwitchA] interface loopback 0

[SwitchA-LoopBack0] ip address 1.1.1.1 255.255.255.255

[SwitchA-LoopBack0] quit

# Specify the IP address of Loopback 0 as the global source address for VXLAN tunnels.

[SwitchA] tunnel global source-address 1.1.1.1

# Specify site-facing interface Twenty-FiveGigE 1/0/1 as a VTEP access port.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] vtep access port

[SwitchA-Twenty-FiveGigE1/0/1] quit

# Disable source MAC check on transport-facing interface Twenty-FiveGigE 1/0/2.

[SwitchA] interface twenty-fivegige 1/0/2

[SwitchA-Twenty-FiveGigE1/0/2] undo mac-address static source-check enable

[SwitchA-Twenty-FiveGigE1/0/2] quit

# Disable remote-MAC address learning.

[SwitchA] vxlan tunnel mac-learning disable

# Enable flood proxy on multicast VXLAN tunnels.

[SwitchA] vxlan tunnel flooding-proxy

4.     Configure Switch B:

# Enable L2VPN.

<SwitchB> system-view

[SwitchB] l2vpn enable

# Configure active TCP connection settings.

[SwitchB] ovsdb server tcp ip 10.0.2.15 port 6632

# Enable the OVSDB server.

[SwitchB] ovsdb server enable

# Enable the OVSDB VTEP service.

[SwitchB] vtep enable

# Assign an IP address to Loopback 0.

[SwitchB] interface loopback 0

[SwitchB-LoopBack0] ip address 2.2.2.2 255.255.255.255

[SwitchB-LoopBack0] quit

# Specify the IP address of Loopback 0 as the global source address for VXLAN tunnels.

[SwitchB] tunnel global source-address 2.2.2.2

# Specify site-facing interface Twenty-FiveGigE 1/0/1 as a VTEP access port.

[SwitchB] interface twenty-fivegige 1/0/1

[SwitchB-Twenty-FiveGigE1/0/1] vtep access port

[SwitchB-Twenty-FiveGigE1/0/1] quit

# Disable source MAC check on transport-facing interface Twenty-FiveGigE 1/0/2.

[SwitchB] interface twenty-fivegige 1/0/2

[SwitchB-Twenty-FiveGigE1/0/2] undo mac-address static source-check enable

[SwitchB-Twenty-FiveGigE1/0/2] quit

# Disable remote-MAC address learning.

[SwitchB] vxlan tunnel mac-learning disable

# Enable flood proxy on multicast VXLAN tunnels.

[SwitchB] vxlan tunnel flooding-proxy

5.     Configure Switch C:

# Enable L2VPN.

<SwitchC> system-view

[SwitchC] l2vpn enable

# Configure active TCP connection settings.

[SwitchC] ovsdb server tcp 10.0.2.15 port 6632

# Enable the OVSDB server.

[SwitchC] ovsdb server enable

# Enable the OVSDB VTEP service.

[SwitchC] vtep enable

# Assign an IP address to Loopback 0.

[SwitchC] interface loopback 0

[SwitchC-LoopBack0] ip address 3.3.3.3 255.255.255.255

[SwitchC-LoopBack0] quit

# Specify the IP address of Loopback 0 as the global source address for VXLAN tunnels.

[SwitchC] tunnel global source-address 3.3.3.3

# Specify site-facing interface Twenty-FiveGigE 1/0/1 as a VTEP access port.

[SwitchC] interface twenty-fivegige 1/0/1

[SwitchC-Twenty-FiveGigE1/0/1] vtep access port

[SwitchC-Twenty-FiveGigE1/0/1] quit

# Disable source MAC check on transport-facing interface Twenty-FiveGigE 1/0/2.

[SwitchC] interface twenty-fivegige 1/0/2

[SwitchC-Twenty-FiveGigE1/0/2] undo mac-address static source-check enable

[SwitchC-Twenty-FiveGigE1/0/2] quit

# Disable remote-MAC address learning.

[SwitchC] vxlan tunnel mac-learning disable

# Enable flood proxy on multicast VXLAN tunnels.

[SwitchC] vxlan tunnel flooding-proxy

6.     Configure VXLAN settings on the controller, and configure the flood proxy server. (Details not shown.)

Verifying the configuration

1.     Verify the VXLAN settings on the VTEPs. This example uses Switch A.

# Verify that the VXLAN tunnel interfaces on the VTEP are up.

[SwitchA] display interface tunnel

Tunnel1

Current state: UP

Line protocol state: UP

Description: Tunnel1 Interface

Bandwidth: 64 kbps

Maximum transmission unit: 1464

Internet protocol processing: disabled

Last clearing of counters: Never

Tunnel source 1.1.1.1, destination 2.2.2.2

Tunnel protocol/transport UDP_VXLAN/IP

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

# Verify that the VXLAN tunnels have been assigned to the VXLAN, and flood proxy has been enabled on the multicast VXLAN tunnel.

[SwitchA] display l2vpn vsi verbose

VSI Name: evpn2014

  VSI Index               : 0

  VSI State               : Up

  MTU                     : 1500

  Bandwidth               : Unlimited

  Broadcast Restrain      : Unlimited

  Multicast Restrain      : Unlimited

  Unknown Unicast Restrain: Unlimited

  MAC Learning            : Enabled

  MAC Table Limit         : -

  MAC Learning rate       : -

  Drop Unknown            : -

  Flooding                : Enabled

  Statistics              : Disabled

  VXLAN ID                : 10

  Tunnels:

    Tunnel Name          Link ID    State  Type        Flood proxy

    Tunnel1              0x5000001  Up     Manual      Disabled

    Tunnel2              0x5000002  Up     Manual      Disabled

    Tunnel3              0x5000003  Up     Manual      Enabled

  ACs:

    AC                               Link ID    State    Type

    WGE1/0/1 srv2                    0          Up       Manual

# Verify that the VTEP has obtained the MAC addresses of remote VMs from the controller.

<SwitchA> display l2vpn mac-address

MAC Address    State     VSI Name                        Link ID/Name   Aging

cc3e-5f9c-6cdb OVSDB     evpn2014                        Tunnel1        NotAging

cc3e-5f9c-23dc OVSDB     evpn2014                        Tunnel2        NotAging

--- 2 mac address(es) found  ---

2.     Verify that VM 1, VM 2, and VM 3 can ping each other. (Details not shown.)