H3C S5500-EI Series Operation Manual

Also see for S5500-EI series: Operation manual Operation manual Configuration guide Operation manual – port security Configuration guide

H3C S5500-EI Series Operation Manual Manual pdf 40 page image

Operation Manual – VRRPH3C S5500-EI Series Ethernet Switches Chapter 1 VRRP Configuration1-39The above information indicates that in standby group 1 Switch A is the master, SwitchB is the backup and the host with the default gateway of FE80::10 accesses theInternet through Switch A; in standby group 2 Switch A is the backup, Switch B is themaster and the host with the default gateway of FE80::20 accesses the Internetthrough Switch B.Note:Multiple standby groups are commonly used in actual networking. In IPv6 network, youneed to manually configure the default gateway for VRRP standby group to share load.1.6 Troubleshooting VRRPSymptom 1:The console screen displays error prompts frequently.Analysis:This error is probably due to the inconsistent configuration of the other switch in thestandby group, or that a device is attempting to send illegitimate VRRP packets.Solution:z In the first case, modify the configuration.z In the latter case, you have to resort to non-technical measures.Symptom 2:Multiple masters are present in the same standby group.Analysis:z If presence of multiple masters only lasts a short period, this is normal andrequires no manual intervention.z If it lasts long, you must ensure that these masters can receive VRRP packets andthe packets received are legitimate.Solution:Ping between these masters, and do the following:z If the ping fails, check network connectivity.z If the ping succeeds, check that their configurations are consistent in terms ofnumber of virtual IP addresses, virtual IP addresses, advertisement interval, andauthentication.

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