[j-nsp] Replicated BGP sessions flapping on backup RE with NSR

[David Ball]

  We recently upgraded to 9.2R2.15 on T640s, and apparently all BGP
address families are supported for NSR now (inet, inet-vpn, and
l2vpn).  Sure enough, I see BGP sessions being established on the
backup REs, and routes showing up in my routing tables on the backup
REs, but the sessions flap nearly every 30secs.  they're up and stable
on the primary RE, but not so on the backup.

  Anyone observed that behaviour before, and/or have any suggestions
as to why it might be occuring?  I have to assume that it's not
'supposed' to be happening that way, because when the sessions look
like they're flapping (established time is < 30secs), the routes
indeed disappear.

  I have 5 iBGP sessions, plus about 10-12 sessions inside the same
VRF, and all appear to be doing this.  Am I the only one seeing this?

David