Re: [nsp] how to use MBGP table for RPF?

From: Jared Mauch (jared@puck.nether.net)
Date: Thu Dec 13 2001 - 13:01:19 EST


        You need to redist connected/static routes into mbgp.

        - jared

On Thu, Dec 13, 2001 at 12:52:53PM -0500, Cliff Judge wrote:
>
> Hi,
>
> I have a small network with transit provided by three
> upstreams. One of these upstream links bears a tunnel over which I recieve
> multicast traffic.
>
> However, the best unicast path back to the source of a few of
> these streams is a different transit link. This seems to cause a problem
> which can be made to go away if I tweak my unicast routing policy into a
> shape that is suboptimal for everything else (i.e. setting a high
> local-pref on routes from the upstream whose link has the tunnel, so that
> all outbound traffic will prefer that route).
>
> I believe I have a proper MBGP topology set up amongst the
> relevant routers. However, RPF still uses the unicast table; a sh ip rpf
> says "RPF type: unicast".
>
> A sh ip mbgp shows the proper routing, my question is, how do I
> get RPF to use the mbgp table instead of the unicast table for its rpf's.
>
> The hardware involved are 7206VXRs with the NPE-300, running
> 12.1(7).
>
> Any help anyone can give would be greatly appreciated - thanks in
> advance.
>
> -%
> |Cliff Judge Network Engineer|
> |301-561-2866 Cidera, Inc |

-- 
Jared Mauch  | pgp key available via finger from jared@puck.nether.net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.



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