From: Dillon Yang (gzdillon@hotmail.com)
Date: Thu Mar 24 2005 - 23:21:38 GMT-3
Hi, nenad:
I can understand your intention from the words.
Can you offer the topology and definite requirement?
Maybe this can make the gurus answer your question, they have no time to guess your intention.
HTH
dillon
----- Original Message -----
From: "nenad pudar" <nenad.pudar@gmail.com>
To: <ccielab@groupstudy.com>
Sent: Friday, March 18, 2005 12:16 AM
Subject: Complex real-life BGP problem
> Hi
> I want to change the bgp next-hop from being the router receiving some
> routes through EBGP (policy will apply to selcted routes) to be the
> other router in network (many hops away)
> This is for purpose of traffic balancing.
> The problem with this that if the new next-hop-router goes down I will
> be blackholing the selected routes from the router in question.
> So am looking for for some kind of policy that will change next-hop
> only if the new-next-hop router is up.
> Simplified config looks like this
>
> route-map NEXT-HOP PERMIT 10
> match as-path 33------ selected routes
> set ip next-hope NEW ROUTER
>
> route-map NEXT-HOP PERMIT 20
>
>
> neighbor backbone route-map NEXT-HOP out
>
> The only option I see so far is to use something like this
> set ip next-hop ADDRESS1 ADDRESS2
> Now according to some Cisco documents if ADDRESS1 is unreachible it
> will use ADDRESS2
> BUT IT DOES NOT SEEM TO BE WORKING
> EVEN IF ADDRESS1 GETS UNREACHEBLE all routers continue to have this
> address as next-hop marked with unaccessible.
>
> If anybody already tried to do this or know for some option I will
> appreciate help
> thanks
> nenad
>
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