3Com S7902E, Configuration Manual

Page: 2261 / 2621

1-13
Auth Type : None
Virtual IP : 192.168.0.10
Master IP : 192.168.0.101
VRRP Track Information:
Track Object : 1 State : Positive Switchover
# Display information about track entry 1 on Switch B.
<SwitchB> display track 1
Track ID: 1
Status: Positive
Notification delay: Positive 0, Negative 0 (in seconds)
Reference object:
BFD session:
Packet type: Echo
Interface : Vlan-interface2
Remote IP : 192.168.0.101
Local IP : 192.168.0.102
The above output shows that when the status of the track entry becomes Positive, Switch A is the
master and Switch B the backup.
# Enable VRRP state debugging and BFD event debugging on Switch B.
<SwitchB> terminal debugging
<SwitchB> terminal monitor
<SwitchB> debugging vrrp state
<SwitchB> debugging bfd event
# When Switch A fails, the following output information is displayed on Switch B.
*Dec 17 14:44:34:142 2008 SwitchB BFD/7/EVENT:Send sess-down Msg,
[Src:192.168.0.102,Dst:192.168.0.101,Vlan-interface2,Echo], instance:0, protocol:Track
*Dec 17 14:44:34:144 2008 SwitchB VRRP/7/DebugState: IPv4 Vlan-interface2 | Virtual Router
1 : Backup --> Master reason: The status of the tracked object changed
# Display the detailed information of the VRRP group on Switch B.
<SwitchB> display vrrp verbose
IPv4 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1 Adver Timer : 1
Admin Status : Up State : Master
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 0
Auth Type : None
Virtual IP : 192.168.0.10
Virtual MAC : 0000-5e00-0101
Master IP : 192.168.0.102
VRRP Track Information:
Track Object : 1 State : Negative Switchover