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DES-7200 Configuration Guide Chapter 6 REUP Configuration
6-5
DES-7200 (config-if) # switchport backup interface gigabitEthernet 0/2 preemption
delay 50
DES-7200 (config-if) # show interfaces switchport backup detail
Switch Backup Interface Pairs:
Active Interface Backup Interface State
-----------------------------------------------------------
GigabitEthernet 0/1 GigabitEthernet 0/2 Active Up/Backup Down
Interface Pair : Gi0/1, Gi0/2
Preemption Mode : forced
Preemption Delay : 50 seconds
Bandwidth : Gi0/1(1000 Mbits), Gi0/2(10 Mbits)
Note
1. The bandwidth of an AP port is the number of its members whose
link is up multiplying the speed of the members.
2. Once the STP is enabled on the uplink, the preemption delay
should be larger than 35 seconds.
6.2.3 Configuring the VLAN Load
Balancing
VLAN load balancing allows two ports of REUP pair to forward data packets of
mutually exclusive VLANs, thus making maximum use of link bandwidth.
Fig 3 Topology in which both links for load balancing are normal
As shown in Fig 3: REUP is configured on Port 1 and Port 2 of Switch A; REUP VLAN
load balancing is enabled to map VLAN 1-200 to instance 1 and other VLANs to