H3C Technologies H3C SR8800 - Manual (Page 94)

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The output shows that in VRRP group 1 Router A is the master, Router B is the backup and packets
sent from Host A to Host B are forwarded by Router A.
When Router A fails, you can still ping Router B successfully on Host A. To view the detailed
information of the VRRP group on Router B, use the display vrrp ipv6 verbose command.
# When Router A fails, display the detailed information of VRRP group 1 on Router B.
[RouterB-GigabitEthernet4/1/1] display vrrp ipv6 verbose
IPv6 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface GigabitEthernet4/1/1
VRID : 1 Adver Timer : 100
Admin Status : Up State : Master
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 5
Auth Type : None
Virtual IP : FE80::10
1::10
Virtual MAC : 0000-5e00-0201
Master IP : FE80::2
The output shows that when Router A fails, Router B becomes the master, and packets sent from
Host A to Host B are forwarded by Router B.
VRRP interface tracking configuration example
Network requirements
• Router A and Router B belong to VRRP group 1 with the virtual IPv6 addresses of 1::10/64 and
FE80::10.
• Host A wants to access Host B on the Internet, and learns 1::10/64 as its default gateway through
RA messages sent by the routers.
• When Router A operates normally, packets sent from Host A to Host B are forwarded by Router A.
If interface GigabitEthernet 4/1/2 through which Router A connects to the internet is not available,
packets sent from Host A to Host B are forwarded by Router B.