3Com S7902E, Configuration Manual

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Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1 Adver Timer : 1
Admin Status : Up State : Backup
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 5
Auth Type : None
Virtual IP : 202.38.160.111
Master IP : 202.38.160.1
The above information indicates that in VRRP group 1 Switch A is the master, Switch B is the backup
and packets sent from Host A to Host B are forwarded by Switch A.
If Switch A fails, you can still ping through Host B on Host A. Use the display vrrp verbose command to
view the detailed information of the VRRP group on Switch B.
# If Switch A fails, the detailed information of VRRP group 1 on Switch B is displayed.
[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 Adver Timer : 1
Admin Status : Up State : Master
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 5
Auth Type : None
Virtual IP : 202.38.160.111
Virtual MAC : 0000-5e00-0101
Master IP : 202.38.160.2
The above information indicates that if Switch A fails, Switch B becomes the master, and packets sent
from Host A to Host B are forwarded by Switch B.
VRRP Interface Tracking Configuration Example
Network requirements
z
Host A needs to access Host B on the Internet, using 202.38.160.111/24 as its default gateway.
z
Switch A and Switch B belong to VRRP group 1 with the virtual IP address of 202.38.160.111/24.
z
If Switch A operates normally, packets sent from Host A to Host B are forwarded by Switch A; if
VLAN-interface 3 through which Switch A connects to the Internet is not available, packets sent
from Host A to Host B are forwarded by Switch B.