[c-nsp] ospf nssa ibgp problem

Jon Lewis jlewis at lewis.org
Mon Oct 16 14:37:25 EDT 2006


On Mon, 16 Oct 2006, Oliver Boehmer (oboehmer) wrote:

> Sounds like the classical "BGP resolves the BGP next-hop through a BGP
> prefix" symptom. Make sure you have a specific OSPF route to your
> next-hop in the routing table. Make sure you configure "next-hop-self"
> on all your edge routers towards the RR. This could be the issue if the
> next-hop for theses "flapping" prefixes is known via an external OSPF
> route (redistribute connected), and this prefix won't be sent into
> NSSA..

Ok, from some more reading, I see I was mistaken about the meaning of no 
synch...it's for routes, not next-hops.  So it seems what I was trying to 
do is not possible, and now that I think about it, it probably wasn't a 
very good idea anyway.

----------------------------------------------------------------------
  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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