Planet XGS3-24042 User Manual download pdf (Page 391)

100

101

45-9

Switch (config-router)#network vlan 300

Switch(config)#interface vlan 100

Switch(config-if-vlan100) #rip bfd enable

When the link between Switch A and Switch B is failing, BFD can detect it immediately and notifies RIP to

delete the learnt route.

45.3.3 Example for Linkage of BFD and VRRP

Example:

When the master is failing, the backup cannot become the master until the configured timeout timer expires.

The timeout is generally three to four seconds and therefore the switchover is slow. To solve this problem,

VRRP uses BFD to probe the state of the master. Once the master fails, the backup can become the new

master within 100 ms.

Configuration procedure:

# Configure Switch A

Switch#config

Switch(config)#bfd mode active

Switch(config)#interface vlan 2

Switch(config-ip-vlan2)#ip address 192.16.0.101 255.255.255.0

Switch(config)#router vrrp 1

Switch(config-router)#virtual-ip 192.168.0.10

Switch(config-router)#interface vlan 1

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Planet XGS3-24042 User Manual Page 391

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