Backup Master Enabled But Not Routing Packets; Enabling Trace Messages For Ipv6 Vrrp Troubleshooting - Avaya 8800 Troubleshooting Manual

Upper layer troubleshooting

Backup master enabled but not routing packets

With VRRP running on SMLT, if a backup-master is enabled and its administrative state is up,
the backup should route packets rather than bridging them, assuming it has the proper
information about the next-hop and destination.
When the backup-master state is up, it does not install the VRRP MAC as SELF (like in
VRRPv2), but instead it maintains the MAC as LEARNED, while still routing the packets.
To confirm whether the backup-master is routing the packet or not, dump MAC records
for the module:
dump ercdRecord mac slot <value> (CLI or ACLI Global Configuration mode)
00:00:5e:00:02:1e Mgid 8 isMcast N DestPort 512 Rtr Y Ip6Route
Y Act Y CpyCpu NiMon N eMon N SrcQos N SrcDiscard N DestDiscard
N pktQos 1 Tos 0 RMT 0
Make sure the Ip6Route Bit is set to "Y" when the backupmaster state is up.

Enabling trace messages for IPv6 VRRP troubleshooting

To troubleshoot IPv6 VRRP, you can enable RCIP6 trace messages using the following
command:
trace level 66 3
And to provide additional trace information, you can also enable the following traces:
trace ipv6 nd on all
trace ipv6 base on all
trace ipv6 forwarding on all
trace ipv6 rtm on all
trace ipv6 transport on all
When VRRP is enabled on two routing switches, the Master-Backup relationship will form 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.
446 Troubleshooting
Comments? infodev@avaya.com
July 2013