Use this procedure to enable trace messages for IPv6 VRRP.
When VRRP is enabled on two routing switches, the master-backup
relationship forms with one router taking the responsibility of routing.
If the master-backup relationship is not formed between the VRRP virtual
routers, look for the following trace messages to ensure that the
master is sending the advertisements correctly and the backup is processing
them.
Procedure
-
Enter Privileged EXEC mode:
- To troubleshoot IPv6
VRRP, you can enable RCIP6 trace messages with the command:
- And to provide additional
trace information, you can also enable the following traces:
trace
ipv6 nd enable
trace
ipv6 base enable all
trace
ipv6 forwarding enable all
trace
ipv6 rtm enable all
trace
ipv6 transport enable all
- When VRRP is enabled
on two routing switches, the master-backup relationship forms with
one router taking the responsibility of routing. If the master-backup
relationship is not formed between the VRRP virtual routers, look
for the following trace messages to ensure that the master is sending
the advertisements correctly and the backup is processing them. On
the master router, look for the following RCIP6 trace messages.
tMainTask RCIP6: rcip6_vrrp.c:
5118: VRF name: GlobalRouter (VRF id 0): ipv6VrrpTic: Am Master for
Vrid 200 on IfIndex 2053 Timer 1
If VRRP is
enabled on the interface, this timer kicks off every second and shows
the state for the VRID.
[11/18/09 15:08:20:383]
tMainTask RCIP6: rcip6_vrrp.c: 5924: ipv6VrrpSendAdvertisement: for
Vrid 200 on IfIndex 2053
[11/18/09 15:08:20:583]
tMainTask RCIP6: rcip6_vrrp.c: 5175: VRF name: GlobalRouter (VRF id
0): ipv6VrrpTic: ipv6VrrpSendAdvertisement
The preceding trace messages show that the VRRP master is sending
the advertisements correctly at the end of advertisement interval
for a VRID.
- On the backup router,
look for the following RCIP6 trace messages.
tMainTask RCIP6: rcip6_vrrp.c:
5236: VRF name: GlobalRouter (VRF id 0): ipv6VrrpTic: Am Backup for
VrId 200 on IfIndex 2052 Timer 1
tMainTask RCIP6: rcip6_vrrp.c:
4854: ipv6VrrpIn: Vrid 200 on IfIndex 2052
tMainTask RCIP6: rcip6_vrrp.c:
5545: VRF name: GlobalRouter (VRF id 0): rcIpVrrpProcessAdvt: Am backup
for Vrid 200 on IfIndex 2052
The preceding trace messages show that the backup router is receiving
the advertisements sent by the master and correctly processing them.
