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Re: BGP as an IGP (Was Re: IGPs in use)

  • From: Hakan Hansson
  • Date: Wed Oct 14 05:57:40 1998

At 11:04 1998-10-14 , Chrisy Luke wrote:
>Sean M. Doran wrote (on Oct 14):
>> The key point is that, in a router talking iBGP, the route to the
>> NEXT_HOP received by an iBGP neighbour *MUST* be known through
>> means other than BGP.  This is not to say that the route need
>> be dynamic -- a static default route would do just fine.
>
>Not necessarily. You just get a more pronounced stepping effect when
>you learn routes whose next-hops are in the same protocol.

Either you have to configure next-hop-self or use static or use other IGP,
otherwise you'll end up with flapping routes in your network. BGP cannot
use a route for next-hop-self address derived by itself, as far as I know.

/Hakan