H3C Technologies H3C S12500 Series Switches - Manual (Page 189)

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Auth Type : Simple Key : ******
Virtual IP : FE80::10
1::10
Master IP : FE80::2
VRRP Track Information:
Track Interface: Vlan3 State : Down Pri Reduced : 30
# When interface VLAN-interface 3 on Switch A is not available, the detailed information of VRRP
group 1 on Switch B is displayed.
[SwitchB-Vlan-interface2] display vrrp ipv6 verbose
IPv6 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1 Adver Timer : 400
Admin Status : Up State : Master
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 5
Auth Type : Simple Key : ******
Virtual IP : FE80::10
1::10
Virtual MAC : 0000-5e00-0201
Master IP : FE80::2
The output shows that when VLAN-interface 3 on Switch A is not available, the priority of Switch
A is reduced to 80 and Switch A becomes the backup. Switch B becomes the master and packets
sent from Host A to Host B are forwarded by Switch B.
VRRP with multiple VLANs configuration example
Network requirements
Switch A and Switch B belong to both VRRP group 1 and VRRP group 2. The virtual IPv6 addresses of
VRRP group 1 are 1::10/64 and FE80::10, and those of VRRP group 2 are 2::10/64 and FE90::10.
Hosts in VLAN 2 learn 1::10/64 as their default gateway and hosts in VLAN 3 learn 2::10/64 as their
default gateway through RA messages sent by the switches.
In VRRP group 1, Switch A has a higher priority than Switch B. In VRRP group 2, Switch B has a higher
priority than Switch A. In this case, hosts in VLAN 2 and VLAN 3 can communicate with external
networks through Switch A and Switch B, respectively, and when Switch A or Switch B fails, the hosts can
use the other switch to communicate with external networks to avoid communication interruption.