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DES-7200 Configuration Guide Chapter 6 REUP Configuration
6-21
SwitchD(config-if-GigabitEthernet 0/1)#switchport backup interface
GigabitEthernet 0/2
SwitchD(config-if-GigabitEthernet 0/1)# exit
Step 2: Enable Switch D to send MAC address update message
SwitchD (config)# mac-address-table move update transit
¾ Configurations on Switch E
Step 1: Configure REUP pair (port 1 is the primary port and port 2 is the secondary
port)
SwitchE> enable
SwitchE # configure terminal
SwitchE (config)# interface GigabitEthernet 0/1
SwitchE (config-if-GigabitEthernet 0/1)# switchport mode trunk
SwitchE (config-if-GigabitEthernet 0/1)# switchport backup interface
GigabitEthernet 0/2
Step 3: Configure preemption mode
! Configure preemption mode as bandwidth mode
SwitchE (config-if-GigabitEthernet 0/1)# switchport backup interface
gigabitEthernet 0/2 preemption mode bandwidth
! Configure preemption delay as 40 seconds
SwitchE (config-if-GigabitEthernet 0/1)# switchport backup interface
gigabitEthernet 0/2 preemption delay 40
SwitchE (config-if-GigabitEthernet 0/1)# exit
Step 2: Enable Switch E to send MAC address update message
DES-7200(config)# mac-address-table move update transmit
¾ Configurations on Switch B
Step 1: Enable Switch B to send MAC address update message
SwitchB # configure terminal
SwitchB (config)# mac-address-table move update receive
Step 2: Join all ports on REUP switched path to the same MAC address update group
In this example, Gi0/1 and Gi0/3 are interfaces on the upstream switched path of
SwitchD, and Gi0/3 and Gi0/2 are interfaces on the upstream switched path of SwitchE.
Since one interface can only join one address update group, we can join Gi0/1, Gi0/2
and Gi0/3 into the same address update group.