R0106-HP MSR Router Series High Availability Configuration Guide(V7)

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Running Mode : Standard
Total number of virtual routers : 1
Interface GigabitEthernet2/0/1
VRID : 1 Adver Timer : 500
Admin Status : Up State : Backup
Config Pri : 110 Running Pri : 80
Preempt Mode : Yes Delay Time : 5
Become Master : 2200ms left
Auth Type : Simple Key : ******
Virtual IP : 10.1.1.10
Master IP : 10.1.1.2
VRRP Track Information:
Track Object : 1 State : Negative Pri Reduced : 30
# Display detailed information about VRRP group 1 on Router B.
[RouterB-GigabitEthernet2/0/1] display vrrp verbose
IPv4 Virtual Router Information:
Running Mode : Standard
Total number of virtual routers : 1
Interface GigabitEthernet2/0/1
VRID : 1 Adver Timer : 500
Admin Status : Up State : Master
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 5
Auth Type : Simple Key : ******
Virtual IP : 10.1.1.10
Virtual MAC : 0000-5e00-0101
Master IP : 10.1.1.2
The output shows that when a fault is on the link between Router A and Router C, the priority of Router
A decreases to 80. Router A becomes the backup, and Router B becomes the master. Packets from Host
A to Host B are forwarded through Router B.
Configuring BFD for a VRRP backup to monitor the master
Network requirements
As shown in Figure 22:
• Router A and Router B belong to VRRP group 1. The virtual IP address of VRRP group 1 is
192.168.0.10.
• The default gateway of the hosts in the LAN is 192.168.0.10.
Configure VRRP-Track-BFD collaboration to monitor the master on the backup and meet the following
requirements:
• When Router A operates correctly, the hosts in the LAN access the Internet through Router A.
• When Router A fails, the backup (Router B) can detect the state change of the master through BFD
and become the new master. The hosts in the LAN access the Internet through Router B.