Example: Configuring dual-uplink interfaces

Introduction

The following information provides an example for configuring dual-uplink interfaces to provide increased link bandwidth and load sharing.

Network configuration

As shown in Figure 1, in centralized forwarding mode, the AC is connected to the access switch in hair-pin mode. The DHCP server assigns IP addresses to the AP and the client.

·     Configure the client to come online in VLAN 200.

·     Assign the AC to VLAN 100, and configure the AC and the AP to establish connections at Layer 2.

·     Configure Layer 2 static link aggregation for the two uplink interfaces connecting the AP and the access switch. Configure load balancing based on source and destination MAC addresses for data traffic to be load balanced among different member ports of the aggregation.

You can configure the load balancing mode as needed. This example is for illustration only.

Figure 1 Network diagram

 

Analysis

·     Enable the DHCP server feature on the core switch for the core switch to act as the DHCP server.

·     Enable PoE on the access switch to supply power to the AP.

·     Configure wireless services on the AC for the client to access the network wirelessly.

Restrictions and guidelines

·     Use the actual serial ID of an AP to uniquely identify that AP.

·     Forbids VLAN 1 traffic to be transmitted out of trunk ports to prevent packet accumulation in VLAN 1.

·     As a best practice, use AP uplink interfaces that have the same port rate for link aggregation, and make sure the two peer interfaces on the switch also use the port rate. If the AP uplink interfaces use different port rates, only one interface can forward packets at a time, which increases link availability but disables load balancing.

Procedures

Configuring the core switch

1.     Configure interfaces on the core switch:

# Create VLAN 100 and VLAN-interface 100, and assign an IP address to the VLAN interface. The AP will obtain an IP address from the address pool matching the interface address.

<Core switch> system-view

[Core switch] vlan 100

[Core switch-vlan100] quit

[Core switch] interface vlan-interface 100

[Core switch-Vlan-interface100] ip address 192.168.10.1 255.255.255.0

[Core switch-Vlan-interface100] quit

# Create VLAN 200 and VLAN-interface 200, and assign an IP address to the VLAN interface. The client will obtain an IP address from the address pool matching the interface address.

[Core switch] vlan 200

[Core switch-vlan200] quit

[Core switch] interface vlan-interface 200

[Core switch-Vlan-interface200] ip address 192.168.20.1 255.255.255.0

[Core switch-Vlan-interface200] quit

# Configure Ten-GigabitEthernet 1/0/23 that connects the core switch to the access switch as a trunk port, remove the port from VLAN 1, and assign the port to VLANs 100 and 200.

[Core switch] interface ten-gigabitethernet 1/0/23

[Core switch-Ten-GigabitEthernet1/0/23] port link-type trunk

[Core switch-Ten-GigabitEthernet1/0/23] undo port trunk permit vlan 1

[Core switch-Ten-GigabitEthernet1/0/23] port trunk permit vlan 100 200

[Core switch-Ten-GigabitEthernet1/0/23] quit

2.     Configure the default route. (Details not shown.)

3.     Configure the DHCP server:

# Enable the DHCP server feature.

[Core switch] dhcp enable

# Configure DHCP address pool 1, specify subnet 192.168.10.0/24, and set the gateway address as 192.168.10.1.

[Core switch] dhcp server ip-pool 1

[Core switch-dhcp-pool-1] network 192.168.10.0 mask 255.255.255.0

[Core switch-dhcp-pool-1] gateway-list 192.168.10.1

# Exclude 192.168.10.2 (IP address of VLAN-interface 100 of the AC) from IP allocation.

[Core switch-dhcp-pool-1] forbidden-ip 192.168.10.2

[Core switch-dhcp-pool-1] quit

# Configure DHCP address pool 2, specify subnet 192.168.20.0/24, set the gateway address, and specify the DNS server address. In this example, the DNS server address is also 192.168.20.1.

[Core switch] dhcp server ip-pool 2

[Core switch-dhcp-pool-2] network 192.168.20.0 mask 255.255.255.0

[Core switch-dhcp-pool-2] gateway-list 192.168.20.1

[Core switch-dhcp-pool-2] dns-list 192.168.20.1

[Core switch-dhcp-pool-2] quit

Configuring the AC

1.     Edit the AP configuration file.

# Edit the AP configuration file, name the file map.txt, and upload the file to the AC.

system-view

interface Bridge-Aggregation1

quit

interface GigabitEthernet1/0/1

undo port-isolate enable

port link-aggregation group 1

quit

interface GigabitEthernet1/0/2

undo port-isolate enable

port link-aggregation group 1

quit

link-aggregation global load-sharing mode source-mac destination-mac

2.     Configure the AC interfaces:

# Create VLAN 100, and assign an IP address to VLAN-interface 100. The AP will obtain an address in the same subnet as the interface address to establish CAPWAP tunnels with the AC.

[AC] vlan 100

[AC-vlan100] quit

[AC] interface vlan-interface 100

[AC-Vlan-interface100] ip address 192.168.10.2 255.255.255.0

[AC-Vlan-interface100] quit

# Create VLAN 200. The client will use this VLAN to access the WLAN.

[AC] vlan 200

[AC-vlan200] quit

# Configure Ten-GigabitEthernet 1/0/24 that connects the AC to the access switch as a trunk port, remove the port from VLAN 1, and assign the port to VLANs 100 and 200.

[AC] interface ten-gigabitethernet 1/0/24

[AC-Ten-GigabitEthernet1/0/24] port link-type trunk

[AC-Ten-GigabitEthernet1/0/24] undo port trunk permit vlan 1

[AC-Ten-GigabitEthernet1/0/24] port trunk permit vlan 100 200

[AC-Ten-GigabitEthernet1/0/24] quit

3.     Configure wireless services:

# Create service template 1.

[AC] wlan service-template 1

# Specify the SSID as service.

[AC-wlan-st-1] ssid service

# Set the AKM mode to PSK, and specify the plaintext preshared key as 12345678.

[AC-wlan-st-1] akm mode psk

[AC-wlan-st-1] preshared-key pass-phrase simple 12345678

# Set the cipher suite to CCMP, and set the security IE to RSN.

[AC-wlan-st-1] cipher-suite ccmp

[AC-wlan-st-1] security-ie rsn

# Configure the AC to forward client data traffic. If the AC acts as the client traffic forwarder by default, skip this step.

[AC-wlan-st-1] client forwarding-location ac

# Enable the service template.

[AC-wlan-st-1] service-template enable

[AC-wlan-st-1] quit

4.     Configure an AP:

 

NOTE: In a large-scale network, configure AP settings in AP group view instead of AP view as a best practice.

 

# Create a manual AP named officeap, and specify the AP model and serial ID.

[AC] wlan ap officeap model WA6320

[AC-wlan-ap-officeap] serial-id 219801A28N819CE0002T

# Create AP group group1, and configure a grouping rule by AP name to add AP officeap to the group.

[AC] wlan ap-group group1

[AC-wlan-ap-group-group1] ap officeap

# Bind service template 1 to radio 1.

[AC-wlan-ap-group-group1] ap-model WA6320

[AC-wlan-ap-group-group1-ap-model-WA6320] radio 1

[AC-wlan-ap-group-group1-ap-model-WA6320-radio-1] service-template 1 vlan 200

# Enable radio 1.

[AC-wlan-ap-group-group1-ap-model-WA6320-radio-1] radio enable

[AC-wlan-ap-group-group1-ap-model-WA6320-radio-1] quit

# Deploy configuration file map.txt to APs in the AP group.

[AC-wlan-ap-group-group1-ap-model-WA6320] map-configuration map.txt

[AC-wlan-ap-group-group1-ap-model-WA6320] quit

[AC-wlan-ap-group-group1] quit

Configure the access switch

# Create VLANs 100 and 200. The switch will use VLAN 100 to forward the traffic on the CAPWAP tunnels between the AC and AP, and use VLAN 200 for client access.

<Access switch> system-view

[Access switch] vlan 100

[Access switch-vlan100] quit

[Access switch] vlan 200

[Access switch-vlan200] quit

# Configure Ten-GigabitEthernet 1/0/24 that connects the access switch to the AC as a trunk port, remove the port from VLAN 1, and assign the port to VLANs 100 and 200.

[Access switch] interface ten-gigabitEthernet 1/0/24

[Access switch-Ten-GigabitEthernet1/0/24] port link-type trunk

[Access switch-Ten-GigabitEthernet1/0/24] undo port trunk permit vlan 1

[Access switch-Ten-GigabitEthernet1/0/24] port trunk permit vlan 100 200

[Access switch-Ten-GigabitEthernet1/0/24] quit

# Configure Ten-GigabitEthernet 1/0/23 that connects the access switch to the core switch as a trunk port, remove the port from VLAN 1, and assign the port to VLANs 100 and 200.

[Access switch] interface ten-gigabitEthernet 1/0/23

[Access switch-Ten-GigabitEthernet1/0/23] port link-type trunk

[Access switch-Ten-GigabitEthernet1/0/23] undo port trunk permit vlan 1

[Access switch-Ten-GigabitEthernet1/0/23] port trunk permit vlan 100 200

[Access switch-Ten-GigabitEthernet1/0/23] quit

# Create Layer 2 aggregate interface 1, specify the interface as an access port, and assign the port to VLAN 100.

[Access switch] interface bridge-aggregation 1

[Access switch-Bridge-Aggregation1] port access vlan 100

[Access switch-Bridge-Aggregation1] quit

# Assign interfaces GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 to aggregation group 1, and enable PoE.

[Access switch] interface gigabitEthernet 1/0/1

[Access switch-GigabitEthernet1/0/1] port link-aggregation group 1

[Access switch-GigabitEthernet1/0/1] poe enable

[Access switch-GigabitEthernet1/0/1] quit

[Access switch] interface gigabitEthernet 1/0/2

[Access switch-GigabitEthernet1/0/2] port link-aggregation group 1

[Access switch-GigabitEthernet1/0/2] poe enable

[Access switch-GigabitEthernet1/0/2] quit

# Set the global load sharing mode to load share packets based on source and destination MAC addresses.

[Access switch] link-aggregation global load-sharing mode source-mac destination-mac

Verifying the configuration

1.     View AP registration information on the AC:

# Verify that the AP has been associated with the AC. If the AP is in R/M state, the AP has been associated with the AC.

<AC> display wlan ap all

Total number of APs: 1

Total number of connected APs: 1

Total number of connected manual APs: 1

Total number of connected auto APs: 0

Total number of connected common APs: 1

Total number of connected WTUs: 0

Total number of inside APs: 0

Maximum supported APs: 20

Remaining APs: 19

Total AP licenses: 20

Local AP licenses: 20

Server AP licenses: 0

Remaining Local AP licenses: 19

Sync AP licenses: 0

                                 AP information

 State : I = Idle,      J  = Join,       JA = JoinAck,    IL = ImageLoad

         C = Config,    DC = DataCheck,  R  = Run,   M = Master,  B = Backup

AP name                AP ID   State   Model             Serial ID

officeap               1       R/M     WA6320           219801A28N819CE0002T

View client information on the AC.

# Verify that the client has come online from radio 1 of the AP.

<AC> display wlan client

Total number of clients: 1

MAC address    User name            AP name               R IP address      VLAN

109a-dd9d-fc68 N/A                  officeap              1 192.168.20.4    200

View detailed information about the aggregation group on the access switch.

[Access switch] display link-aggregation verbose

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Aggregate Interface: Bridge-Aggregation1

Aggregation Mode: Static

Loadsharing Type: Shar

  Port             Status  Priority Oper-Key

--------------------------------------------------------------------------------

  GE1/0/1          S       32768    1

  GE1/0/2          S       32768    1

Configuration files

·     Core switch:

#

 dhcp enable

#

vlan 100

#

vlan 200

#

dhcp server ip-pool 1

 gateway-list 192.168.10.1

 network 192.168.10.0 mask 255.255.255.0

 forbidden-ip 192.168.10.2

#

dhcp server ip-pool 2

 gateway-list 192.168.20.1

 network 192.168.20.0 mask 255.255.255.0

 dns-list 192.168.20.1

#

interface Vlan-interface100

 ip address 192.168.10.1 255.255.255.0

#

interface Vlan-interface200

 ip address 192.168.20.1 255.255.255.0

#

interface Ten-GigabitEthernet1/0/23

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 100 200

#

·     AC:

#

vlan 100

#

vlan 200

#

wlan service-template 1

 ssid service

 client forwarding-location ac

 akm mode psk

 preshared-key pass-phrase cipher $c$3$N//5BVbsOqdBTxi+7MJZKT6Zqh5MAmYs2ZzM

 cipher-suite ccmp

 security-ie rsn

 service-template enable

#

interface Vlan-interface100

 ip address 192.168.10.2 255.255.255.0

#

interface Ten-GigabitEthernet1/0/24

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 100 200

#                                                                              

wlan ap-group group1                                                            

 ap officeap                                                                        

 ap-model WA6320                                                               

 map-configuration map.txt

  radio 1                                                                       

   service-template 1 vlan 200

   radio enable                                                                

#

wlan ap officeap model WA6320

 serial-id 219801A28N819CE0002T

#

·     Access switch:

#

 link-aggregation global load-sharing mode destination-mac source-mac

#

vlan 100

#

vlan 200

#

interface GigabitEthernet1/0/1

 port link-aggregation group 1

 poe enable

#

interface GigabitEthernet1/0/2

 port link-aggregation group 1

 poe enable

#

interface Ten-GigabitEthernet1/0/23

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 100 200

#

interface Ten-GigabitEthernet1/0/24

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 100 200

#  

interface bridge-aggregation 1

 port access vlan 100

Related documentation

·     AP Management Command Reference in H3C Access Controllers Command References

·     AP Management Configuration Guide in H3C Access Controllers Configuration Guides

·     Ethernet Link Aggregation Command Reference in H3C Access Controllers Command References

·     Ethernet Link Aggregation Configuration Guide in H3C Access Controllers Configuration Guides

·     Network Connectivity Command Reference in H3C Access Controllers Command References

·     Network Connectivity Configuration Guide in H3C Access Controllers Configuration Guides

·     Port Isolation Command Reference in H3C Access Controllers Command References

·     Port Isolation Configuration Guide in H3C Access Controllers Configuration Guides

·     WLAN Access Configuration Guide in H3C Access Controllers Configuration Guides

·     WLAN Access Command Reference in H3C Access Controllers Command References