Configuring Bfd For The Vrrp Backup To Monitor The Master - HP 4800G Series Configuration Manual

Last Up Time: 02:42:53
Protocol: BGP
Diag Info: No Diagnostic
# When the link between Switch A and Switch B fails, display the detailed BGP neighbor information of
Switch A. Switch A has removed its neighbor relationship with Switch B.
<SwitchA> display bgp peer 10.1.0.100 verbose
Peer: 10.1.0.100
Type: IBGP link
BGP version 4, remote router ID 2.2.2.2
BGP current state: Idle
BGP current event: Stop
BGP last state: Established
Received: Total 1 messages, Update messages 0
Sent: Total 0 messages, Update messages 0
Maximum allowed prefix number: 4294967295
Threshold: 75%
Minimum time between advertisement runs is 15 seconds
Optional capabilities:
Route refresh capability has been enabled
Peer Preferred Value: 0
BFD: Enabled
Routing policy configured:
No routing policy is configured

Configuring BFD for the VRRP Backup to Monitor the Master

Network requirements
If BFD is not configured, when the master in a VRRP group fails, 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 milliseconds.
Auth mode: None
Local: 1.1.1.1
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