3Com MSR 50 Series Configuration Manual page 2004

2004 C 107: VRRP C
HAPTER ONFIGURATION
If it lasts long, you must ensure that these masters can receive VRRP packets
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and the packets received are legitimate.
Solution:
Ping between these masters, and do the following:
If the ping fails, check network connectivity.
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If the ping succeeds, check that their configurations are consistent in terms of
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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.