A10E/A28E/A28F Configuration Guide
Alpha-A28E#config
Alpha-A28E(config)#create vlan 100-200 active
Alpha-A28E(config)#interface port 1
Alpha-A28E(config-port)#switchport mode trunk
Alpha-A28E(config-port)#switchport trunk allowed vlan 100-200 confirm
Alpha-A28E(config-port)#exit
Alpha-A28E(config)#interface port 2
Alpha-A28E(config-port)#switchport mode trunk
Alpha-A28E(config-port)#switchport trunk allowed vlan 100-200 confirm
Alpha-A28E(config-port)#exit
Step 2 Set Port 1 to the primary interface and set Port 2 to the backup interface in VLANs 100–150.
Alpha-A28E(config)#interface port 1
Alpha-A28E(config-port)#switchport backup port 2 vlanlist 100-150
Alpha-A28E(config-port)#exit
Step 3 Set Port 2 to the primary interface and set Port 1 to the backup interface in VLANs 151–200.
Alpha-A28E(config)#interface port 2
Alpha-A28E(config-port)#switchport backup port 1 vlanlist 151-200
Checking results
Use the show switchport backup command to view status of interface backup under normal
or faulty conditions.
When both Port 1 and Port 2 are Up, Port 1 forwards traffic of VLANs 100–150, and Port 2
forwards traffic of VLANs 151–200.
Alpha-A28E#show switchport backup
Restore delay: 15s.
Restore mode: port-up.
Active Port(State) Backup Port(State) Vlanlist
---------------------------------------------------------
1 (Up) 2 (Standby) 100-150
2 (Up) 1 (Standby) 151-200
Manually disconnect the link between Switch A and Switch B to emulate a fault. Then, Port 1
becomes Down, and Port 2 forwards traffic of VLANs 100–200.
Alpha-A28E#show switchport backup
Restore delay: 15s
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