Troubleshooting Vrrp - 3Com Switch 4800G 24-Port Configuration Manual

Troubleshooting VRRP

Preempt Mode
Auth Type
Virtual IP
Master IP
Interface
VRID
Admin Status
Config Pri
Preempt Mode
Auth Type
Virtual IP
Virtual MAC
Master IP
The above information indicates that in standby group 1 Switch A is the master,
Switch B is the backup and the host with the default gateway of FE80::10 accesses
the Internet through Switch A; in standby group 2 Switch A is the backup, Switch
B is the master and the host with the default gateway of FE80::20 accesses the
Internet through Switch B.
n
Multiple standby groups are commonly used in actual networking. In IPv6
network, you need to manually configure the default gateway for VRRP standby
group to share load.
Symptom 1:
The console screen displays error prompts frequently.
Analysis:
This error is probably due to the inconsistent configuration of the other switch in
the standby group, or that a device is attempting to send illegitimate VRRP
packets.
Solution:
In the first case, modify the configuration.
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In the latter case, you have to resort to non-technical measures.
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Symptom 2:
Multiple masters are present in the same standby group.
Analysis:
If presence of multiple masters only lasts a short period, this is normal and
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requires no manual intervention.
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:
: YES
: NONE
: FE80::10
: FE80::1
: Vlan-interface2
: 2
: UP
: 110
: YES
: NONE
: FE80::20
: 0000-5e00-0202
: FE80::2
Troubleshooting VRRP
Delay Time : 0
Adver. Timer : 100
State : Master
Run Pri : 110
Delay Time : 0
1105