[c-nsp] VPNv4 AFI Editing Causes BGP Failure

[Mark Tinka]

Hello all.

I've experienced, on more than one occasion, a situation where 
editing the VPNv4 address family under MP-BGP causes running 
BGP sessions to flap. Specifically, this occurs when I add 
new MP-iBGP neighbors to the configuration of the router in 
question.

I've experienced this on 12.3(22) as well as 12.4T (forget the 
actual train). Boxes tested were 7206-VXR and 2600XM.

This only appears to affect the VPNv4 AFI. Editing of the IPv4 
and IPv6 AFI's does not reproduce this issue.

Has anyone else seen this? Does it signify anything 
operationally meaningful MPLS/VPN's?

Cheers,

Mark.
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