H3C Technologies H3C MSR 50 - Manual (Page 107)

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Interface Ethernet1/1
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.
# After Router A resumes normal operation, use the display vrrp ipv6 verbose command to display
the detailed information about VRRP group 1 on Router A.
[RouterA-Ethernet1/1] display vrrp ipv6 verbose
IPv6 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface Ethernet1/1
VRID : 1 Adver Timer : 100
Admin Status : Up State : Master
Config Pri : 110 Running Pri : 110
Preempt Mode : Yes Delay Time : 5
Auth Type : None
Virtual IP : FE80::10
1::10
Virtual MAC : 0000-5e00-0201
Master IP : FE80::1
The output shows that after Router A resumes normal operation, it becomes the master, and
packets sent from Host A to Host B are forwarded by Router A.
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 correctly, Router A forwards the packets that Host A sends to Host B. If
interface Ethernet 1/1 through which Router A connects to the Internet is not available, Router B
forwards the packets that Host A sends to Host B.
• To prevent attacks to the VRRP group from illegal users by using spoofed packets, configure the
authentication mode as plain text to authenticate the VRRP packets in VRRP group 1. Specify the
authentication key as hello.