iBGP next hop and multi-access media

Christopher L. Morrow chris at UU.NET
Mon Oct 7 01:15:59 UTC 2002



On Sun, 6 Oct 2002, Ralph Doncaster wrote:

>
> > RD> When I setup a situation like the above, with Router B
> > RD> advertising the 172.16.16.0/24 to router A, router A sees a
> > RD> next hop of 10.10.10.2.  This is not good since packets from
> > RD> A going to the 172.16.16 subnet get sent to Router B, which
> > RD> then ARPs the desitnation, instead of just being ARPed by
> > RD> router A.
> >
> > Is this what you're trying to do:
> >
> > 	route-map <foo>
> > 	 match <whatever>
> > 	 set ip next-hop <something>
>
> Not really, what I want is router A to learn that ther is no next hop IP-
> the subnet is on the local ethernet.
>

(except that 172.x.x.x isn't 'local' to the 10.x.x.x network, even if they
are connected to the same physical network)




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