[52591] in North American Network Operators' Group
Re: iBGP next hop and multi-access media
daemon@ATHENA.MIT.EDU (Christopher L. Morrow)
Sun Oct 6 21:19:06 2002
Date: Mon, 7 Oct 2002 01:15:59 +0000 (GMT)
From: "Christopher L. Morrow" <chris@UU.NET>
To: Ralph Doncaster <ralph@istop.com>
Cc: "E.B. Dreger" <eddy+public+spam@noc.everquick.net>,
"nanog@merit.edu" <nanog@merit.edu>
In-Reply-To: <Pine.LNX.4.21.0210062104180.18365-100000@ns.istop.com>
Errors-To: owner-nanog-outgoing@merit.edu
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)
