[c-nsp] Faster iBGP convergance: Tune the timers or use FastPeering Session Deactivation?
Oliver Boehmer (oboehmer)
oboehmer at cisco.com
Tue Jun 8 14:33:36 EDT 2010
> There seems to be two viable options:
>
> 1) Reduce the iBGP timers to 1/3
> 2) Use fall-over (fast peering session deactivation), with a route-map
to
> only match /32s so the presence of aggregates or defaults doesn't have
an
> affect [1]
>...
> [1] Nexthop Tracking has the same limitation, the route never becomes
> invalid in the presence of a shorter-match.
3) don't use 1) or 2), and use NHT tracking with a route-map to only
match /32 ("Selective Address Tracking")
3) is IMHO the best option. I would never tear down an iBGP session to
signal failure..
oli
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