H3C Technologies H3C S7500E Series Switches - Manual (Page 171)

10-38
Run Method : Virtual MAC
Total number of virtual routers : 2
Interface Vlan-interface2
VRID : 1 Adver Timer : 100
Admin Status : Up State : Backup
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 0
Auth Type : None
Virtual IP : FE80::10
1::10
Master IP : FE80::1
Interface Vlan-interface3
VRID : 2 Adver Timer : 100
Admin Status : Up State : Master
Config Pri : 110 Running Pri : 110
Preempt Mode : Yes Delay Time : 0
Auth Type : None
Virtual IP : FE90::10
2::10
Virtual MAC : 0000-5e00-0202
Master IP : FE90::2
The above information shows that in VRRP group 1 Switch A is the master, Switch B is the
backup and hosts with the default gateway of 1::10/64 accesses the Internet through Switch A;
in VRRP group 2 Switch A is the backup, Switch B is the master and hosts with the default
gateway of 2::10/64 accesses the Internet through Switch B.
Troubleshooting VRRP
Symptom 1:
The screen frequently displays error prompts.
Analysis:
This error is probably caused by:
z Inconsistent configuration of the devices in the VRRP group.
z A device is attempting to send illegitimate VRRP packets.
Solution:
z In the first case, modify the configuration.
z In the latter case, resort to non-technical measures.
Symptom 2:
Multiple masters are present in the same VRRP group.
Analysis:
z Multiple masters coexist for a short period: This is normal and requires no manual
intervention.
z Multiple masters coexist for a long period: This is because devices in the VRRP group
cannot receive VRRP packets, or the received VRRP packets are illegal.
Solution:
Ping between these masters, and do the following: