3Com S7906E Configuration Manual page 2271

Auth Type : None
Virtual IP : 10.1.1.10
Master IP : 10.1.1.1
The above output information indicates that in VRRP group 1, Switch A is the master and Switch B is a
backup. Packets from Host A to Host B are forwarded through Switch A.
# Shut down the uplink interface VLAN-interface 3 on Switch A.
[SwitchA-Vlan-interface2] interface vlan-interface 3
[SwitchA-Vlan-interface3] shutdown
After shutting down the uplink interface on Switch A, you can still successfully ping Host B on Host A.
Use the display vrrp command to view information about VRRP group 1.
# After shutting down the uplink interface on Switch A, display detailed information about VRRP group 1
on Switch A.
[SwitchA-Vlan-interface3] display vrrp verbose
IPv4 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1
Admin Status : Up
Config Pri : 110
Preempt Mode : Yes
Auth Type : None
Virtual IP : 10.1.1.10
Master IP : 10.1.1.2
VRRP Track Information:
Track Object : 1
# After shutting down the uplink interface on Switch A, display detailed information about VRRP group 1
on Switch B.
[SwitchB-Vlan-interface2] display vrrp verbose
IPv4 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1
Admin Status : Up
Config Pri : 100
Preempt Mode : Yes
Auth Type : None
Virtual IP : 10.1.1.10
Virtual MAC : 0000-5e00-0101
Master IP : 10.1.1.2
The output information indicates that when the uplink interface on Switch A is shut down, the priority of
Switch A decreases to 80. Switch A becomes the backup, and Switch B becomes the master. Packets
from Host A to Host B are forwarded through Switch B
Adver Timer : 1
State : Backup
Running Pri : 80
Delay Time : 0
State : Negative
Adver Timer : 1
State : Master
Running Pri : 100
Delay Time : 0
1-23
Pri Reduced : 30