Troubleshooting Vrrp - 3Com S7906E Configuration Manual

The above information indicates that if Switch A fails, Switch B becomes the master, Switch C becomes
the AVF among the VFs corresponding to the virtual MAC address 000f-e2ff-4011, and packets sent
from Host A to the external network are forwarded by Switch C.

Troubleshooting VRRP

Symptom 1:
The screen displays error prompts frequently.
Analysis:
This error is probably caused by the following:
Inconsistent configuration of the devices in the VRRP group.
A device is attempting to send illegitimate VRRP packets.
Solution:
In the first case, modify the configuration.
In the latter case, you have to resort to non-technical measures.
Symptom 2:
Multiple masters are present in the same VRRP group.
Analysis:
Multiple masters coexist for a short period: This is normal and requires no manual intervention.
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:
If the ping fails, check network connectivity.
If the ping succeeds, check that their configurations are consistent in terms of number of virtual IP
addresses, virtual IP addresses, advertisement interval, and authentication.
Symptom 3:
Frequent VRRP state transition.
Analysis:
The VRRP advertisement interval is set too short.
Solution:
Increase the interval to sent VRRP advertisement or introduce a preemption delay.
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