[c-nsp] 6500 SXD7b VRRP issue

[Jon Lewis]

I just searched bug toolkit and didn't see anything similar, but has 
anyone else had issues with VRRP "freaking out" with 6500s running 
s72033-pk9sv-mz.122-18.SXD7b.bin?

Last night, we lost connectivity to one of our BGP providers.  10 seconds 
after the

  %BGP-5-ADJCHANGE: neighbor x.x.x.x Down BGP Notification sent
  %BGP-3-NOTIFICATION: sent to neighbor x.x.x.x 4/0 (hold time expired) 0 bytes

all the interfaces on this router running VRRP started having their states 
change from backup to master to backup every few seconds.  After about 40 
seconds of this, it settled down and all the VRRP states went back to 
their original state.  While this was going on, the other 6500 
participating in the VRRPs (which was the master) logged nothing and 
thought it was the master the whole time.

None of the VRRPs are tracking anything, so I don't see why a BGP peer 
going down should cause any VRRP state changes.

I've seen VRRP do this before (not caused by a BGP peer state change) and 
have never tracked down the cause.

I'm probably going to upgrade to SXI in the very near future and hope that 
fixes whatever the problem is.

----------------------------------------------------------------------
  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________