Huawei Quidway S6500 Series Operation Manual page 502

Operation Manual - Reliability
Quidway S6500 Series Ethernet Switches
caused by the malicious attempt of some devices, non-technical measures should be
resorted to.
II. Symptom 2: More than one masters existing within the same virtual router
There are also 2 reasons. One is short time coexistence of many master switches,
which is normal and needs no manual intervention. Another is the long time
coexistence of many master switches, which may be because several masters cannot
receive VRRP packets from each other, or receive some illegal packets.
To solve such a problem, an attempt should be made to ping among the many master
switches and if such an attempt fails, it indicates that there are other problems in
existence. If they can be pinged through, it indicates that the problem is caused by
inconsistent configuration. For the configuration of the same VRRP virtual router,
complete consistence for the number of virtual IP addresses, each virtual IP address,
timer duration and authentication type must be guaranteed.
III. Symptom 3: Frequent switchover of VRRP state
Such a problem occurs when the virtual router timer duration is too short. So the
problem can be solved through prolonging this duration or configuring the preemption
delay.
Huawei Technologies Proprietary
1-15
Chapter 1 VRRP Configuration