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Troubleshooting Virtual Router Redundancy Protocol (VRRP) Dshell Troubleshooting
OmniSwitch Troubleshooting Guide September 2005 page 13-11
Dshell Troubleshooting
In a situation where VRRP is flapping, go into Dshell of the switch that is configured as the backup virtual
router that is flapping and enter vrrpTMon(1, vrid, vlanId). For example, for virtual router 200 on VLAN
200 the command will be: vrrpTMon(1,200,200). You should then see the advertisements arriving once
per second on your console. Before running Dshell commands make sure to verify the configuration of all
VRRP participated switches.
Note. Dshell commands should only be used by Alcatel personnel or under the direction of Alcatel.
Misuse or failure to follow procedures that use Dshell commands in this guide correctly can cause lengthy
network down time and/or permanent damage to hardware.
7800-1 -> dshell
Working: [Kernel]->vrrpTMon (1,200,200)
vrrpDbg = 00000010 vrrpDbgVR = 00C800C8
value = 1 = 0x1
Working: [Kernel]->
I 54758886 VRID 200 VLAN 200
4500 0014 0DC3 0000 FF70 0000 ACC8 011C
E000 0012 21C8 FF01 0001 3150 ACC8 011C
0000 0000 0000 0000
I 54758986 VRID 200 VLAN 200
4500 0014 7449 0000 FF70 0000 ACC8 011C
E000 0012 21C8 FF01 0001 3150 ACC8 011C
0000 0000 0000 0000
I 54759086 VRID 200 VLAN 200
4500 0014 E847 0000 FF70 0000 ACC8 011C
E000 0012 21C8 FF01 0001 3150 ACC8 011C
0000 0000 0000 0000
Watch for the sequence number increasing. This indicates 3 hello packets received in 3 seconds.
Disable this Dshell command by setting value 0.
Working: [Kernel]->vrrpTMon 0