VLAN tagging features enable service providers to separate or aggregate customer traffic in the service provider network. The following are available VLAN tagging operations:

· Adding a layer of service provider VLAN (SVLAN) tag.

· Modifying the SVLAN tag, CVLAN tag, or both.

To add an SVLAN tag, use one of the following VLAN tagging features:

· One-to-two VLAN mapping—Adds different SVLANs for traffic with different CVLAN tags.

To modify VLAN tags, use one of the following VLAN tagging features:

· One-to-one VLAN mapping—Replaces one VLAN tag with another.

· Many-to-one VLAN mapping—Replaces multiple VLAN tags with the same VLAN tag.

· Two-to-two VLAN mapping—Replaces the SVLAN ID, CVLAN ID, or both IDs for an incoming double-tagged frame.

The devices in the service provider network learn MAC addresses of CVLANs into the MAC address table of the SVLAN.

Prerequisites

The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.

This document assumes that you have basic knowledge of VLAN mapping.

General configuration restrictions and guidelines

EVB and the VLAN tagging features are mutually exclusive. Do not use EVB with any VLAN tagging features on a port.

Example: Configuring one-to-two VLAN mapping

Network configuration

As shown in Figure 1:

· Customer A and Customer B each have two branches that require Layer 2 connectivity over the service provider network.

· Both customers have three types of traffic. For each customer, the service provider assigns one SVLAN by traffic type.

Configure one-to-two VLAN mapping on each customer-side port of PE A and PE B to meet the following requirements:

· The service provider adds an SVLAN tag to packets from customer networks based on the traffic type, as described in Table 1 and Figure 2.

· The SVLAN tag uses the same 802.1p priority as the CVLAN tag.

Figure 1 Network diagram

Table 1 VLAN mapping table

Traffic type	CVLANs	SVLAN
Customer A
Video	31 to 40	1003
Voice	21 to 30	1002
Data	10 to 20	1001
Customer B
Storage	36 to 40	2003
Voice	26 to 35	2002
Data	15 to 25	2001

Figure 2 Required traffic pattern in the service provider network

Analysis

To support multiple SVLANs and send traffic to the customer networks with the SVLAN tag removed, perform the following tasks on the customer-side ports:

1. Configure the link type of the ports as hybrid.

2. Assign the ports to the SVLANs as untagged VLAN members.

For the SVLAN tag to use the same 802.1p priority as the CVLAN tag, configure the customer-side port to use the 802.1p priority in incoming packets for priority mapping.

Software versions used

This configuration example was created and verified on R3606.

Restrictions and guidelines

When you configure ports on the forwarding path of double-tagged packets across the service provider network, follow these restrictions and guidelines:

· Set the MTU to a minimum of 1504 bytes for each port.

· Configure all ports to allow double-tagged packets to pass through without removing the SVLAN tag.

By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

Procedures

Configuring PE A

1. Create CVLANs and SVLANs:

# Create CVLANs 10 to 40.

<PE_A> system-view

[PE_A] vlan 10 to 40

# Create SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_A] vlan 1001 to 1003

[PE_A] vlan 2001 to 2003

# Configure HundredGigE 1/0/1 and HundredGigE 1/0/3 to operate in bridge mode.

[PE_A] interface range hundredgige1/0/1 to hundredgige1/0/3

[PE_A-if-Range] port link-mode bridge

[PE_A-if-Range] quit

2. Configure the customer-side port HundredGigE 1/0/1:

# Configure the port as a hybrid port.

[PE_A] interface hundredgige 1/0/1

[PE_A-HundredGigE1/0/1] port link-type hybrid

# Assign the port to CVLANs 10 through 40 as a tagged VLAN member.

[PE_A-HundredGigE1/0/1] port hybrid vlan 10 to 40 tagged

# Assign the port to SVLANs 1001 through 1003 as an untagged VLAN member.

[PE_A-HundredGigE1/0/1] port hybrid vlan 1001 to 1003 untagged

# Remove the port from VLAN 1.

[PE_A-HundredGigE1/0/1] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping to add SVLAN tag 1001 to traffic from VLANs 10 through 20.

[PE_A-HundredGigE1/0/1] vlan mapping nest range 10 to 20 nested-vlan 1001

# Configure one-to-two VLAN mapping to add SVLAN tag 1002 to traffic from VLANs 21 through 30.

[PE_A-HundredGigE1/0/1] vlan mapping nest range 21 to 30 nested-vlan 1002

# Configure one-to-two VLAN mapping to add SVLAN tag 1003 to traffic from VLANs 31 through 40.

[PE_A-HundredGigE1/0/1] vlan mapping nest range 31 to 40 nested-vlan 1003

# Configure the port to use the 802.1p priority in incoming packets for priority mapping.

[PE_A-HundredGigE1/0/1] qos trust dot1p

[PE_A-HundredGigE1/0/1] quit

3. Configure the customer-side port HundredGigE 1/0/2:

# Configure the port as a hybrid port.

[PE_A] interface hundredgige 1/0/2

[PE_A-HundredGigE1/0/2] port link-type hybrid

# Assign the port to CVLANs 15 through 40 as a tagged VLAN member.

[PE_A-HundredGigE1/0/2] port hybrid vlan 15 to 40 tagged

# Assign the port to SVLANs 2001 through 2003 as an untagged VLAN member.

[PE_A-HundredGigE1/0/2] port hybrid vlan 2001 to 2003 untagged

# Remove the port from VLAN 1.

[PE_A-HundredGigE1/0/2] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping to add SVLAN tag 2001 to traffic from VLANs 15 through 25.

[PE_A-HundredGigE1/0/2] vlan mapping nest range 15 to 25 nested-vlan 2001

# Configure one-to-two VLAN mapping to add SVLAN tag 2002 to traffic from VLANs 26 through 35.

[PE_A-HundredGigE1/0/2] vlan mapping nest range 26 to 35 nested-vlan 2002

# Configure one-to-two VLAN mapping to add SVLAN tag 2003 to traffic from VLANs 36 through 40.

[PE_A-HundredGigE1/0/2] vlan mapping nest range 36 to 40 nested-vlan 2003

# Configure the port to use the 802.1p priority in incoming packets for priority mapping.

[PE_A-HundredGigE1/0/2] qos trust dot1p

[PE_A-HundredGigE1/0/2] quit

4. Configure the service provider-side port HundredGigE 1/0/3:

# Configure the port as a trunk port.

[PE_A] interface hundredgige 1/0/3

[PE_A-HundredGigE1/0/3] port link-type trunk

# Remove the port from VLAN 1.

[PE_A-HundredGigE1/0/3] undo port trunk permit vlan 1

# Assign the port to SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_A-HundredGigE1/0/3] port trunk permit vlan 1001 to 1003 2001 to 2003

[PE_A-HundredGigE1/0/3] quit

Configuring PE B

1. Create CVLANs and SVLANs:

# Create CVLANs 10 to 40.

<PE_B> system-view

[PE_B] vlan 10 to 40

# Create SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_B] vlan 1001 to 1003

[PE_B] vlan 2001 to 2003

# Configure HundredGigE 1/0/1 and HundredGigE 1/0/3 to operate in bridge mode.

[PE_B] interface range hundredgige1/0/1 to hundredgige1/0/3

[PE_B-if-Range] port link-mode bridge

[PE_B-if-Range] quit

2. Configure the customer-side port HundredGigE 1/0/1:

# Configure the port as a hybrid port.

[PE_B] interface hundredgige 1/0/1

[PE_B-HundredGigE1/0/1] port link-type hybrid

# Assign the port to CVLANs 15 through 40 as a tagged VLAN member.

[PE_B-HundredGigE1/0/1] port hybrid vlan 15 to 40 tagged

# Assign the port to SVLANs 2001 through 2003 as an untagged VLAN member.

[PE_B-HundredGigE1/0/1] port hybrid vlan 2001 to 2003 untagged

# Remove the port from VLAN 1.

[PE_B-HundredGigE1/0/1] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping to add SVLAN tag 2001 to traffic from VLANs 15 through 25.

[PE_B-HundredGigE1/0/1] vlan mapping nest range 15 to 25 nested-vlan 2001

# Configure one-to-two VLAN mapping to add SVLAN tag 2002 to traffic from VLANs 26 through 35.

[PE_B-HundredGigE1/0/1] vlan mapping nest range 26 to 35 nested-vlan 2002

# Configure one-to-two VLAN mapping to add SVLAN tag 2003 to traffic from VLANs 36 through 40.

[PE_B-HundredGigE1/0/1] vlan mapping nest range 36 to 40 nested-vlan 2003

# Configure the port to use the 802.1p priority in incoming packets for priority mapping.

[PE_B-HundredGigE1/0/1] qos trust dot1p

[PE_B-HundredGigE1/0/1] quit

3. Configure the customer-side port HundredGigE 1/0/2:

# Configure the port as a hybrid port.

[PE_B] interface hundredgige 1/0/2

[PE_B-HundredGigE1/0/2] port link-type hybrid

# Assign the port to CVLANs 10 through 40 as a tagged VLAN member.

[PE_B-HundredGigE1/0/2] port hybrid vlan 10 to 40 tagged

# Assign the port to SVLANs 1001 through 1003 as an untagged VLAN member.

[PE_B-HundredGigE1/0/2] port hybrid vlan 1001 to 1003 untagged

# Remove the port from VLAN 1.

[PE_B-HundredGigE1/0/2] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping to add SVLAN tag 1001 to traffic from VLANs 10 through 20.

[PE_B-HundredGigE1/0/2] vlan mapping nest range 10 to 20 nested-vlan 1001

# Configure one-to-two VLAN mapping to add SVLAN tag 1002 to traffic from VLANs 21 through 30.

[PE_B-HundredGigE1/0/2] vlan mapping nest range 21 to 30 nested-vlan 1002

# Configure one-to-two VLAN mapping to add SVLAN tag 1003 to traffic from VLANs 31 through 40.

[PE_B-HundredGigE1/0/2] vlan mapping nest range 31 to 40 nested-vlan 1003

# Configure the port to use the 802.1p priority in incoming packets for priority mapping.

[PE_B-HundredGigE1/0/2] qos trust dot1p

[PE_B-HundredGigE1/0/2] quit

4. Configure the service provider-side port HundredGigE 1/0/3:

# Configure the port as a trunk port.

[PE_B] interface hundredgige 1/0/3

[PE_B-HundredGigE1/0/3] port link-type trunk

# Remove the port from VLAN 1.

[PE_B-HundredGigE1/0/3] undo port trunk permit vlan 1

# Assign the port to SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_B-HundredGigE1/0/3] port trunk permit vlan 1001 to 1003 2001 to 2003

[PE_B-HundredGigE1/0/3] quit

Configuring devices between PE A and PE B

# Set the MTU to a minimum of 1504 bytes for each port on the path of double-tagged packets. (Details not shown.)

# Configure all ports on the forwarding path to allow packets from VLANs 1001 through 1003 and VLANs 2001 through 2003 to pass through without removing the SVLAN tag. (Details not shown.)

Verifying the configuration

1. Verify VLAN mapping information:

# Verify VLAN mapping information on PE A.

[PE_A] display vlan mapping

Interface HundredGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

10-20 N/A 1001 10-20

21-30 N/A 1002 21-30

31-40 N/A 1003 31-40

Interface HundredGigE1/0/2:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

15-25 N/A 2001 15-25

26-35 N/A 2002 26-35

36-40 N/A 2003 36-40

# Verify VLAN mapping information on PE B.

[PE_B] display vlan mapping

Interface HundredGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

15-25 N/A 2001 15-25

26-35 N/A 2002 26-35

36-40 N/A 2003 36-40

Interface HundredGigE1/0/2:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

10-20 N/A 1001 10-20

21-30 N/A 1002 21-30

31-40 N/A 1003 31-40

2. Verify that PCs of the same customer in a CVLAN can ping each other across the service provider network. (Details not shown.)

3. Verify that PCs of different customers in a CVLAN cannot communicate at Layer 2. The ARP tables on one customer's PCs do not contain entries for MAC addresses of the other customer's PCs. (Details not shown.)

Configuration files

· PE A:

vlan 10 to 40

vlan 1001 to 1003

vlan 2001 to 2003

interface HundredGigE1/0/1

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 10 to 40 tagged

port hybrid vlan 1001 to 1003 untagged

vlan mapping nest range 10 to 20 nested-vlan 1001

vlan mapping nest range 21 to 30 nested-vlan 1002

vlan mapping nest range 31 to 40 nested-vlan 1003

qos trust dot1p

interface HundredGigE1/0/2

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 15 to 40 tagged

port hybrid vlan 2001 to 2003 untagged

vlan mapping nest range 15 to 25 nested-vlan 2001

vlan mapping nest range 26 to 35 nested-vlan 2002

vlan mapping nest range 36 to 40 nested-vlan 2003

qos trust dot1p

interface HundredGigE1/0/3

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 1001 to 1003 2001 to 2003

· PE B:

vlan 10 to 40

vlan 1001 to 1003

vlan 2001 to 2003

interface HundredGigE1/0/1

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 15 to 40 tagged

port hybrid vlan 2001 to 2003 untagged

vlan mapping nest range 15 to 25 nested-vlan 2001

vlan mapping nest range 26 to 35 nested-vlan 2002

vlan mapping nest range 36 to 40 nested-vlan 2003

qos trust dot1p

interface HundredGigE1/0/2

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 10 to 40 tagged

port hybrid vlan 1001 to 1003 untagged

vlan mapping nest range 10 to 20 nested-vlan 1001

vlan mapping nest range 21 to 30 nested-vlan 1002

vlan mapping nest range 31 to 40 nested-vlan 1003

qos trust dot1p

interface HundredGigE1/0/3

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 1001 to 1003 2001 to 2003

Example: Configuring one-to-one and many-to-one VLAN mapping

Network configuration

As shown in Figure 3:

· Each household subscribes to PC, VoD, and VoIP services, and obtains the IP address through DHCP.

· On the home gateways, PC, VoD, and VoIP service traffic is assigned to VLANs 1, 2, and 3, respectively.

To isolate traffic of the same service type from different households, configure one-to-one VLAN mapping on the wiring-closet switches. This feature assigns one VLAN to each type of traffic from each household.

To save VLAN resources, configure many-to-one VLAN mapping on the campus switch (Switch C). This feature transmits the same type of traffic from different households in one VLAN. Use VLANs 501, 502, and 503 for PC, VoD, and VoIP traffic, respectively.

Table 2 VLAN mapping scheme for each service

Service	VLANs on home gateways	VLANs on wiring-closet switches (Switch A and Switch B)	VLANs on campus switch (Switch C)
PC	VLAN 1	VLANs 101, 102, 103, 104	VLAN 501
VoD	VLAN 2	VLANs 201, 202, 203, 204	VLAN 502
VoIP	VLAN 3	VLANs 301, 302, 303, 304	VLAN 503

Figure 3 Network diagram

Software versions used

This configuration example was created and verified on R3606.

Restrictions and guidelines

By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

Procedures

Configuring Switch A

# Create the original VLANs 2 and 3. (VLAN 1 is the system default VLAN and already exists.)

<SwitchA> system-view

[SwitchA] vlan 2 to 3

# Create the translated VLANs 101 through 102, 201 through 202, and 301 through 302.

[SwitchA] vlan 101 to 102

[SwitchA] vlan 201 to 202

[SwitchA] vlan 301 to 302

# Configure HundredGigE 1/0/1 and HundredGigE 1/0/3 to operate in bridge mode.

[SwitchA] interface range hundredgige1/0/1 to hundredgige1/0/3

[SwitchA-if-Range] port link-mode bridge

[SwitchA-if-Range] quit

# Configure the customer-side port HundredGigE 1/0/1 as a trunk port.

[SwitchA] interface hundredgige 1/0/1

[SwitchA-HundredGigE1/0/1] port link-type trunk

# Assign HundredGigE 1/0/1 to the original VLANs and translated VLANs.

[SwitchA-HundredGigE1/0/1] port trunk permit vlan 1 2 3 101 201 301

# Configure one-to-one VLAN mapping on HundredGigE 1/0/1 to map VLANs 1, 2, and 3 to VLANs 101, 201, and 301, respectively.

[SwitchA-HundredGigE1/0/1] vlan mapping 1 translated-vlan 101

[SwitchA-HundredGigE1/0/1] vlan mapping 2 translated-vlan 201

[SwitchA-HundredGigE1/0/1] vlan mapping 3 translated-vlan 301

[SwitchA-HundredGigE1/0/1] quit

# Configure the customer-side port HundredGigE 1/0/2 as a trunk port.

[SwitchA] interface hundredgige 1/0/2

[SwitchA-HundredGigE1/0/2] port link-type trunk

# Assign HundredGigE 1/0/2 to the original VLANs and translated VLANs.

[SwitchA-HundredGigE1/0/2] port trunk permit vlan 1 2 3 102 202 302

# Configure one-to-one VLAN mapping on HundredGigE 1/0/2 to map VLANs 1, 2, and 3 to VLANs 102, 202, and 302, respectively.

[SwitchA-HundredGigE1/0/2] vlan mapping 1 translated-vlan 102

[SwitchA-HundredGigE1/0/2] vlan mapping 2 translated-vlan 202

[SwitchA-HundredGigE1/0/2] vlan mapping 3 translated-vlan 302

[SwitchA-HundredGigE1/0/2] quit

# Configure the network-side port HundredGigE 1/0/3 as a trunk port.

[SwitchA] interface hundredgige 1/0/3

[SwitchA-HundredGigE1/0/3] port link-type trunk

# Assign HundredGigE 1/0/3 to the translated VLANs.

[SwitchA-HundredGigE1/0/3] undo port trunk permit vlan 1

[SwitchA-HundredGigE1/0/3] port trunk permit vlan 101 201 301 102 202 302

[SwitchA-HundredGigE1/0/3] quit

Configuring Switch B

# Configure Switch B in the same way Switch A is configured. (Details not shown.)

Configuring Switch C

1. Configure basic settings required for many-to-one VLAN mapping:

# Enable DHCP snooping.

<SwitchC> system-view

[SwitchC] dhcp snooping enable

# Create the original VLANs 101 through 104, 201 through 204, and 301 through 304, and enable ARP detection for these VLANs.

[SwitchC] vlan 101

[SwitchC-vlan101] arp detection enable

[SwitchC-vlan101] vlan 201

[SwitchC-vlan201] arp detection enable

[SwitchC-vlan201] vlan 301

[SwitchC-vlan301] arp detection enable

[SwitchC-vlan301] vlan 102

[SwitchC-vlan102] arp detection enable

[SwitchC-vlan102] vlan 202

[SwitchC-vlan202] arp detection enable

[SwitchC-vlan202] vlan 302

[SwitchC-vlan302] arp detection enable

[SwitchC-vlan302] vlan 103

[SwitchC-vlan103] arp detection enable

[SwitchC-vlan103] vlan 203

[SwitchC-vlan203] arp detection enable

[SwitchC-vlan203] vlan 303

[SwitchC-vlan303] arp detection enable

[SwitchC-vlan303] vlan 104

[SwitchC-vlan104] arp detection enable

[SwitchC-vlan104] vlan 204

[SwitchC-vlan204] arp detection enable

[SwitchC-vlan204] vlan 304

[SwitchC-vlan304] arp detection enable

# Create the translated VLANs 501 through 503, and enable ARP detection for these VLANs.

[SwitchC-vlan304] vlan 501

[SwitchC-vlan501] arp detection enable

[SwitchC-vlan501] vlan 502

[SwitchC-vlan502] arp detection enable

[SwitchC-vlan502] vlan 503

[SwitchC-vlan503] arp detection enable

[SwitchC-vlan503] quit

# Configure HundredGigE 1/0/1 and HundredGigE 1/0/3 to operate in bridge mode.

[SwitchC] interface range hundredgige1/0/1 to hundredgige1/0/3

[SwitchC-if-Range] port link-mode bridge

[SwitchC-if-Range] quit

2. Configure the customer-side port HundredGigE 1/0/1:

# Configure the port as a trunk port.

[SwitchC] interface hundredgige 1/0/1

[SwitchC-HundredGigE1/0/1] port link-type trunk

# Assign the port to the original VLANs and translated VLANs.

[SwitchC-HundredGigE1/0/1] undo port trunk permit vlan 1

[SwitchC-HundredGigE1/0/1] port trunk permit vlan 101 102 201 202 301 302 501 to 503

# Configure the user-side many-to-one VLAN mapping to map VLANs for PC, VoD, and VoIP traffic to VLANs 501, 502, and 503, respectively.

[SwitchC-HundredGigE1/0/1] vlan mapping uni range 101 to 102 translated-vlan 501

[SwitchC-HundredGigE1/0/1] vlan mapping uni range 201 to 202 translated-vlan 502

[SwitchC-HundredGigE1/0/1] vlan mapping uni range 301 to 302 translated-vlan 503

# Enable DHCP snooping entry recording.

[SwitchC-HundredGigE1/0/1] dhcp snooping binding record

[SwitchC-HundredGigE1/0/1] quit

3. Configure the customer-side port HundredGigE 1/0/2:

# Configure the port as a trunk port.

[SwitchC] interface hundredgige 1/0/2

[SwitchC-HundredGigE1/0/2] port link-type trunk

# Assign the port to the original VLANs and translated VLANs.

[SwitchC-HundredGigE1/0/2] undo port trunk permit vlan 1

[SwitchC-HundredGigE1/0/2] port trunk permit vlan 103 104 203 204 303 304 501 to 503

# Configure the user-side many-to-one VLAN mapping to map VLANs for PC, VoD, and VoIP traffic to VLANs 501, 502, and 503, respectively.

[SwitchC-HundredGigE1/0/2] vlan mapping uni range 103 to 104 translated-vlan 501

[SwitchC-HundredGigE1/0/2] vlan mapping uni range 203 to 204 translated-vlan 502

[SwitchC-HundredGigE1/0/2] vlan mapping uni range 303 to 304 translated-vlan 503

# Enable DHCP snooping entry recording.

[SwitchC-HundredGigE1/0/2] dhcp snooping binding record

[SwitchC-HundredGigE1/0/2] quit

4. Configure the network-side port HundredGigE 1/0/3:

# Enable the network-side VLAN mapping function on the port.

[SwitchC] interface hundredgige 1/0/3

[SwitchC-HundredGigE1/0/3] vlan mapping nni

# Configure the port as a trunk port.

[SwitchC-HundredGigE1/0/3] port link-type trunk

# Assign the port to the translated VLANs 501 through 503.

[SwitchC-HundredGigE1/0/3] undo port trunk permit vlan 1

[SwitchC-HundredGigE1/0/3] port trunk permit vlan 501 to 503

# Configure the port as a DHCP snooping trusted and ARP trusted port.

[SwitchC-HundredGigE1/0/3] dhcp snooping trust

[SwitchC-HundredGigE1/0/3] arp detection trust

[SwitchC-HundredGigE1/0/3] quit

Configuring Switch D

# Create the translated VLANs 501 through 503.

<SwitchD> system-view

[SwitchD] vlan 501 to 503

# Configure HundredGigE 1/0/1 to operate in bridge mode.

[SwitchD] interface Hundredgige1/0/1

[SwitchD-Hundredgige1/0/1] port link-mode bridge

[SwitchD-Hundredgige1/0/1] quit

# Configure HundredGigE 1/0/1 as a trunk port.

[SwitchD] interface hundredgige 1/0/1

[SwitchD-HundredGigE1/0/1] port link-type trunk

# Assign HundredGigE 1/0/1 to the translated VLANs 501 through 503.

[SwitchD-HundredGigE1/0/1] port trunk permit vlan 501 to 503

[SwitchD-HundredGigE1/0/1] quit

Verifying the configuration

# Verify VLAN mapping information on the wiring-closet switches, for example, Switch A.

[SwitchA] display vlan mapping

Interface HundredGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

1 N/A 101 N/A

2 N/A 201 N/A

3 N/A 301 N/A

Interface HundredGigE1/0/2:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

1 N/A 102 N/A

2 N/A 202 N/A

3 N/A 302 N/A

# Verify VLAN mapping information on Switch C.

[SwitchC] display vlan mapping

Interface HundredGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

101-102 N/A 501 N/A

201-202 N/A 502 N/A

301-302 N/A 503 N/A

Interface HundredGigE1/0/2:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

103-104 N/A 501 N/A

203-204 N/A 502 N/A

303-304 N/A 503 N/A

Configuration files

· Switch A:

vlan 1

vlan 2 to 3

vlan 101 to 102

vlan 201 to 202

vlan 301 to 302

interface HundredGigE1/0/1

port link-type trunk

port trunk permit vlan 1 to 3 101 201 301

vlan mapping 1 translated-vlan 101

vlan mapping 2 translated-vlan 201

vlan mapping 3 translated-vlan 301

interface HundredGigE1/0/2

port link-type trunk

port trunk permit vlan 1 to 3 102 202 302

vlan mapping 1 translated-vlan 102

vlan mapping 2 translated-vlan 202

vlan mapping 3 translated-vlan 302

interface HundredGigE1/0/3

port link-type trunk

port trunk permit vlan 1 101 to 102 201 to 202 301 to 302

· Switch B:

vlan 1

vlan 2 to 3

vlan 103 to 104

vlan 203 to 204

vlan 303 to 304

interface HundredGigE1/0/1

port link-type trunk

port trunk permit vlan 1 to 3 103 203 303

vlan mapping 1 translated-vlan 103

vlan mapping 2 translated-vlan 203

vlan mapping 3 translated-vlan 303

interface HundredGigE1/0/2

port link-type trunk

port trunk permit vlan 1 to 3 104 204 304

vlan mapping 1 translated-vlan 104

vlan mapping 2 translated-vlan 204

vlan mapping 3 translated-vlan 304

interface HundredGigE1/0/3

port link-type trunk

port trunk permit vlan 1 103 to 104 203 to 204 303 to 304

· Switch C:

dhcp snooping enable

vlan 101

arp detection enable

vlan 102

arp detection enable

vlan 103

arp detection enable

vlan 104

arp detection enable

vlan 201

arp detection enable

vlan 202

arp detection enable

vlan 203

arp detection enable

vlan 204

arp detection enable

vlan 301

arp detection enable

vlan 302

arp detection enable

vlan 303

arp detection enable

vlan 304

arp detection enable

vlan 501

arp detection enable

vlan 502

arp detection enable

vlan 503

arp detection enable

interface HundredGigE1/0/1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 101 to 102 201 to 202 301 to 302 501 to 503

vlan mapping uni range 101 to 102 translated-vlan 501

vlan mapping uni range 201 to 202 translated-vlan 502

vlan mapping uni range 301 to 302 translated-vlan 503

dhcp snooping binding record

interface HundredGigE1/0/2

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 103 to 104 203 to 204 303 to 304 501 to 503

vlan mapping uni range 103 to 104 translated-vlan 501

vlan mapping uni range 203 to 204 translated-vlan 502

vlan mapping uni range 303 to 304 translated-vlan 503

dhcp snooping binding record

interface HundredGigE1/0/3

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 501 to 503

vlan mapping nni

arp detection trust

dhcp snooping trust

· Switch D:

vlan 501 to 503

interface HundredGigE1/0/1

port link-type trunk

port trunk permit vlan 1 501 to 503

Example: Configuring two-to-two VLAN mapping

Network configuration

As shown in Figure 4:

· A company assigns its branch sites (Site 1 and Site 2) to VLAN 10, and the headquarters provides services in VLAN 30.

· Service provider A uses SVLAN 100 to transmit VLAN 10 traffic for the branch sites.

· Service provider B uses SVLAN 200 to transmit VLAN 30 traffic for the headquarters.

Configure two-to-two VLAN mapping to permit the two branch sites to access VLAN 30 of the headquarters without changing their VLAN assignment.

Figure 4 Network diagram

Software versions used

This configuration example was created and verified on R3606.

Restrictions and guidelines

Configure two-to-two VLAN mapping on one of the edge devices between the two service provider networks. This example uses Switch C.

By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

Procedures

Configuring Device A

# Create CVLAN 10 and SVLAN 100.

<DeviceA> system-view

[DeviceA] vlan 10

[DeviceA-vlan10] quit

[DeviceA] vlan 100

[DeviceA-vlan100] quit

# Configure HundredGigE 1/0/1 and HundredGigE 1/0/2 to operate in bridge mode.

[DeviceA] interface range Hundredgige1/0/1 to Hundredgige1/0/2

[DeviceA-if-Range] port link-mode bridge

[DeviceA-if-Range] quit

# Configure a one-to-two VLAN mapping on the customer-side port (HundredGigE 1/0/1) to add SVLAN tag 100 to packets from VLAN 10.

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] vlan mapping nest single 10 nested-vlan 100

# Configure HundredGigE 1/0/1 as a hybrid port.

[DeviceA-HundredGigE1/0/1] port link-type hybrid

# Assign HundredGigE 1/0/1 to VLAN 10 as a tagged member.

[DeviceA-HundredGigE1/0/1] port hybrid vlan 10 tagged

# Assign HundredGigE 1/0/1 to VLAN 100 as an untagged member.

[DeviceA-HundredGigE1/0/1] port hybrid vlan 100 untagged

# Remove HundredGigE 1/0/1 from VLAN 1.

[DeviceA-HundredGigE1/0/1] undo port hybrid vlan 1

[DeviceA-HundredGigE1/0/1] quit

# Configure the network-side port HundredGigE 1/0/2 as a trunk port.

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] port link-type trunk

# Assign HundredGigE 1/0/2 to VLAN 100.

[DeviceA-HundredGigE1/0/2] port trunk permit vlan 100

# Remove HundredGigE 1/0/2 from VLAN 1.

[DeviceA-HundredGigE1/0/2] undo port trunk permit vlan 1

[DeviceA-HundredGigE1/0/2] quit

Configuring Device B

# Create CVLAN 10 and SVLAN 100.

<DeviceB> system-view

[DeviceB] vlan 10

[DeviceB-vlan10] quit

[DeviceB] vlan 100

[DeviceB-vlan100] quit

# Configure HundredGigE 1/0/1 and HundredGigE 1/0/3 to operate in bridge mode.

[DeviceB] interface range Hundredgige1/0/1 to Hundredgige1/0/3

[DeviceB-if-Range] port link-mode bridge

[DeviceB-if-Range] quit

# Configure a one-to-two VLAN mapping on the customer-side port (HundredGigE 1/0/3) to add SVLAN tag 100 to packets from VLAN 10.

[DeviceB] interface hundredgige 1/0/3

[DeviceB-HundredGigE1/0/3] vlan mapping nest single 10 nested-vlan 100

# Configure HundredGigE 1/0/3 as a hybrid port.

[DeviceB] interface hundredgige 1/0/3

[DeviceB-HundredGigE1/0/3] port link-type hybrid

# Assign HundredGigE 1/0/3 to VLAN 10 as a tagged member.

[DeviceB-HundredGigE1/0/3] port hybrid vlan 10 tagged

# Assign HundredGigE 1/0/3 to VLAN 100 as an untagged member.

[DeviceB-HundredGigE1/0/3] port hybrid vlan 100 untagged

# Remove HundredGigE 1/0/3 from VLAN 1.

[DeviceB-HundredGigE1/0/3] undo port hybrid vlan 1

[DeviceB-HundredGigE1/0/3] quit

# Configure HundredGigE 1/0/1 as a trunk port.

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] port link-type trunk

# Assign HundredGigE 1/0/1 to VLAN 100.

[DeviceB-HundredGigE1/0/1] port trunk permit vlan 100

# Remove HundredGigE 1/0/1 from VLAN 1.

[DeviceB-HundredGigE1/0/1] undo port trunk permit vlan 1

[DeviceB-HundredGigE1/0/1] quit

# Configure HundredGigE 1/0/2 as a trunk port.

[DeviceB] interface hundredgige 1/0/2

[DeviceB-HundredGigE1/0/2] port link-type trunk

# Assign HundredGigE 1/0/2 to VLAN 100.

[DeviceB-HundredGigE1/0/2] port trunk permit vlan 100

# Remove HundredGigE 1/0/2 from VLAN 1.

[DeviceB-HundredGigE1/0/2] undo port trunk permit vlan 1

[DeviceB-HundredGigE1/0/2] quit

Configuring Device C

# Create SVLANs 100 and 200.

<DeviceC> system-view

[DeviceC] vlan 100

[DeviceC-vlan100] quit

[DeviceC] vlan 200

[DeviceC-vlan200] quit

# Configure HundredGigE 1/0/1 and HundredGigE 1/0/2 to operate in bridge mode.

[DeviceC] interface range Hundredgige1/0/1 to Hundredgige1/0/2

[DeviceC-if-Range] port link-mode bridge

[DeviceC-if-Range] quit

# Configure HundredGigE 1/0/1 as a trunk port.

[DeviceC] interface hundredgige 1/0/1

[DeviceC-HundredGigE1/0/1] port link-type trunk

# Assign HundredGigE 1/0/1 to VLANs 100 to 200.

[DeviceC-HundredGigE1/0/1] port trunk permit vlan 100 200

# Remove HundredGigE 1/0/1 from VLAN 1.

[DeviceC-HundredGigE1/0/1] undo port trunk permit vlan 1

# Configure a two-to-two VLAN mapping on HundredGigE 1/0/1 to map SVLAN 100 and CVLAN 10 to SVLAN 200 and CVLAN 30.

[DeviceC-HundredGigE1/0/1] vlan mapping tunnel 100 10 translated-vlan 200 30

[DeviceC-HundredGigE1/0/1] quit

# Configure HundredGigE 1/0/2 as a trunk port.

[DeviceC] interface hundredgige 1/0/2

[DeviceC-HundredGigE1/0/2] port link-type trunk

# Assign HundredGigE 1/0/2 to VLAN 200.

[DeviceC-HundredGigE1/0/2] port trunk permit vlan 200

# Remove HundredGigE 1/0/2 from VLAN 1.

[DeviceC-HundredGigE1/0/2] undo port trunk permit vlan 1

[DeviceC-HundredGigE1/0/2] quit

Configuring Device D

# Create CVLAN 30 and SVLAN 200.

<DeviceD> system-view

[DeviceD] vlan 30

[DeviceD-vlan30] quit

[DeviceD] vlan 200

[DeviceD-vlan200] quit

# Configure HundredGigE 1/0/1 and HundredGigE 1/0/2 to operate in bridge mode.

[DeviceD] interface range Hundredgige1/0/1 to Hundredgige1/0/2

[DeviceD-if-Range] port link-mode bridge

[DeviceD-if-Range] quit

# Configure the link type of HundredGigE 1/0/1 as trunk.

[DeviceD] interface hundredgige 1/0/1

[DeviceD-HundredGigE1/0/1] port link-type trunk

# Assign HundredGigE 1/0/1 to VLAN 200.

[DeviceD-HundredGigE1/0/1] port trunk permit vlan 200

# Remove HundredGigE 1/0/1 from VLAN 1.

[DeviceD-HundredGigE1/0/1] undo port trunk permit vlan 1

[DeviceD-HundredGigE1/0/1] quit

# Configure HundredGigE 1/0/2 as a hybrid port.

[DeviceD] interface hundredgige 1/0/2

[DeviceD-HundredGigE1/0/2] port link-type hybrid

# Assign HundredGigE 1/0/2 to VLAN 30 as a tagged member.

[DeviceD-HundredGigE1/0/2] port hybrid vlan 30 tagged

# Assign HundredGigE 1/0/2 to VLAN 200 as an untagged member.

[DeviceD-HundredGigE1/0/2] port hybrid vlan 200 untagged

# Remove HundredGigE 1/0/2 from VLAN 1.

[DeviceD-HundredGigE1/0/2] undo port hybrid vlan 1

[DeviceD-HundredGigE1/0/2] quit

# Configure a one-to-two VLAN mapping on the customer-side port (HundredGigE 1/0/2) to add SVLAN tag 200 to packets from VLAN 30.

[DeviceD] interface hundredgige 1/0/2

[DeviceD-HundredGigE1/0/2] vlan mapping nest single 30 nested-vlan 200

[DeviceD-HundredGigE1/0/2] quit

Verifying the configuration

# Verify VLAN mapping information on Device C.

[DeviceC] display vlan mapping

Interface HundredGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

100 10 200 30

Configuration files

· Device A:

vlan 10

vlan 100

interface HundredGigE1/0/1

port link-type hybrid

port hybrid vlan 10 tagged

port hybrid vlan 100 untagged

vlan mapping nest single 10 nested-vlan 100

interface HundredGigE1/0/2

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 100

· Device B:

vlan 10

vlan 100

interface HundredGigE1/0/1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 100

interface HundredGigE1/0/2

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 100

interface HundredGigE1/0/3

port link-type hybrid

port hybrid vlan 10 tagged

port hybrid vlan 100 untagged

vlan mapping nest single 10 nested-vlan 100

· Device C:

vlan 100

vlan 200

interface HundredGigE1/0/1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 100 200

vlan mapping tunnel 100 10 translated-vlan 200 30

interface HundredGigE1/0/2

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 200

· Device D:

vlan 30

vlan 200

interface HundredGigE1/0/1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 200

interface HundredGigE1/0/2

port link-type hybrid

port hybrid vlan 30 tagged

port hybrid vlan 200 untagged

vlan mapping nest single 30 nested-vlan 200

H3C S12500R Ethernet Switch Router Series Config Examples-Release 36xx-6W100

Example: Configuring one-to-two VLAN mapping

Example: Configuring one-to-one and many-to-one VLAN mapping

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