Configuring Bfd For The Vrrp Master To Monitor The Uplink - HP MSR Series Configuration Manual

Track Object
The output shows that when BFD detects that Router A fails, it notifies VRRP through the Track module to
change the status of Router B to master without waiting for a period three times the advertisement interval.
This ensures that a backup can quickly preempt as the master.

Configuring BFD for the VRRP master to monitor the uplink

Network requirements
As shown in
192.168.0.10.
The default gateway of the hosts in the LAN is 192.168.0.10.
When Router A operates correctly, hosts in the LAN access the external network through Router A. When
Router A detects that the uplink is down through BFD, it decreases its priority so that Router B can preempt
as the master, ensuring that the hosts in the LAN can access the external network through Router B.
Figure 13 Network diagram
Master
uplink device
Eth1/1
1.1.1.2/24
Eth1/1
1.1.1.1/24
Router A
Master
192.168.0.101/24
Configuration procedure
1. Configure BFD on Router A:
# Configure the source address of BFD echo packets as 10.10.10.10.
<RouterA> system-view
[RouterA] bfd echo-source-ip 10.10.10.10
2. Create the track entry to associate with the BFD session on Router A:
# Create track entry 1 for the BFD session on Router A to check whether the uplink device with the
IP address 1.1.1.2 is reachable.
: 1
Figure 13, Router A and Router B belong to VRRP group 1, whose virtual IP address is
Internet
Uplink
Virtual router
Virtual IP address:
192.168.0.10
Eth1/2
State : Negative
Backup
uplink device
Uplink
Router B
Backup
Eth1/2
192.168.0.102/24
L2 switch
BFD probe packets
VRRP packets
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