vrrp master change without known reason

[Romain_Mercier]

Hi everybody,

I have a problem with VRRP on my network.
I have two x670 (both on version 15.5.3.4), I configure them for about 4 VRRP instances.
The first one have a priority of 150 and a preempt delay of 180 sec. The second one have a priority of 100 and no preempt.
I configure VRRP tracking based on ping, and vlan on the first x670.

Since a few weeks, I often receives alerts about VRRP master change with no reason...
The second x670 become master for about 186 seconds (including preempt timer)
I add events VRRP.TrackConditionFailed but didn't find any entry in my logs.
The only entry in logs for this event is something like :
09/15/2017 11:34:15.06 VLAN interco vrid 9: transitioning to MASTER(2)09/15/2017 11:34:15.05 VLAN examed vrid 43: transitioning to MASTER(2)09/15/2017 11:31:15.08 VR on VLAN interco with VR Id 9 has started its preempt timer of 180 seconds09/15/2017 11:31:15.02 VR on VLAN examed with VR Id 43 has started its preempt timer of 180 seconds09/15/2017 11:31:14.40 VLAN interco vrid 9: transitioning to BACKUP(1)09/15/2017 11:31:14.40 VLAN examed vrid 43: transitioning to BACKUP(1)09/15/2017 11:31:13.46 VLAN interco vrid 9: transitioning to INIT(0)09/15/2017 11:31:13.42 VLAN examed vrid 43: transitioning to INIT(0)NetSight sends me email alerts with this element :
Message: VRRP master change: Master IP A.B.C.D Reason
Anybody have an idea about what I can do to get more information about these events ?

Best regards,
Romain M.

[simon_bingham]

I have had to do the same in the past, I hope this is helpful to you. these are my notes.

Don't forget to turn off log debug mode when done, I warns you about CPU but I have not had any issues turning this on

Send detailed VRRP debug data and normal INFO level information for everything to a syslog server.

# create the filters "VRRPEVENTS" will represent VRRP events in detail an ALSO the usual info,and above log messages

create log filter VRRPEVENTS
configure log filter VRRPEVENTS add events All severity info
configure log filter VRRPEVENTS add events VRRP severity debug-verbose

# Setup SYSLOG

configure syslog add 172.27.233.199:514 vr VR-Mgmt local0
configure log target syslog 172.27.233.199:514 vr VR-Mgmt local0 filter VRRPEVENTS severity Debug-Verbose
enable log target syslog 172.27.233.199:514 vr VR-Mgmt local0

# run debug logging
enable log debug mode