[c-nsp] eBGP multi-hop problem.

Rodney Dunn rodunn at cisco.com
Fri Sep 16 15:26:06 EDT 2005


Just build a GRE tunnel through it.

Rodney

On Fri, Sep 16, 2005 at 10:20:21AM -0700, Rick Ernst wrote:
> 
> I have an eBGP multi-hop customer connected behind a Cat5500/RSM.  I'm
> using multi-hop to a 7513 since the RSM can't handle full tables (128MB).
> 
> The problem is the RSM doesn't have the route information for the network,
> so a routing loop is created between the core network and the RSM (the RSM
> defaults to loopback interfaces on the core routers via OSPF).
> 
> My "get it working" fix was to static-route at a high pref to the RSM
> VLAN/interface, but that obviously breaks if the route is withdrawn.  I'm
> thinking about adding the RSM as a local-only BGP peer, and default
> everything else.  Is this the best way, or am I missing something more
> funamental?  How could this be configured if the RSM was some other device
> that couldn't handle BGP at all?
> 
> Thanks,
> 
> Rick
> 
> 
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