[52583] in North American Network Operators' Group
Re: iBGP next hop and multi-access media
daemon@ATHENA.MIT.EDU (Ezequiel Carson)
Sun Oct 6 13:51:54 2002
From: Ezequiel Carson <ezequiel@ifxnw.com.ar>
To: Ralph Doncaster <ralph@istop.com>
Cc: nanog@merit.edu
In-Reply-To: <Pine.LNX.4.21.0210061241460.16285-100000@ns.istop.com>
Date: 06 Oct 2002 14:49:05 -0300
Errors-To: owner-nanog-outgoing@merit.edu
Can you create another segment with 172.16.16? May be another dotq1q
interface?.
Regards
Ezequiel
On Sun, 2002-10-06 at 13:44, Ralph Doncaster wrote:
>
> Background:
> Router A and B are connected via a common ethernet segment 1. Router A
> uses 10.10.10.1/30, and Router B uses 10.10.10.2/30. Router B also has
> another subnet configured for ethernet segment 1; 172.16.16.0/24.
>
> When I setup a situation like the above, with Router B advertising the
> 172.16.16.0/24 to router A, router A sees a next hop of 10.10.10.2. This
> is not good since packets from A going to the 172.16.16 subnet get sent to
> Router B, which then ARPs the desitnation, instead of just being ARPed by
> router A.
>
> I don't want to turn on ICMP redirects on B since they're insecure and
> ugly. I've also made sure I'm not using next-hop self. Is there a way to
> make this work?
>
> Ralph Doncaster
> principal, IStop.com
>
>
>
