More easier solution is as Nick and Philip said.
Use static route for eachother's /19 pointing to your router. Or just
use default route pointing to ur router.
Thats enough for the situation u describe
--pankaj
----- Original Message -----
From: "Zaheer Aziz" <zaziz@cisco.com>
To: "Nick Kraal" <nick@arc.net.my>
Cc: <cisco-nsp@puck.nether.net>
Sent: Monday, June 17, 2002 10:44 PM
Subject: Re: [nsp] BGP loop detection
> At 10:17 PM 6/17/2002 +0800, Nick Kraal wrote:
>
> Another option,if you continue to run EBGP with them, is to have
them
> configure
>
> neighbor EBGP-address allowas-in
>
> at their EBGP boxes peering with you.
>
> This will accept paths with local as in the AS_PATH. It is mainly
used in
> MPLS-VPN scenarios but can certainly be applicable here.
>
> Zaheer
> >We have a customer that has transit services from us. They have
split their
> >network into two /19 and run BGP with us at two different
locations. Each
> >/19 is actually for two seperate businesses; one a tier-2 ISP and
the other
> >VoIP provider. Two physically sperate networks are also running the
same ASN
> >and are to peer with each other via our network. There is no
internal
> >interconnectivity between them or any IGP running.
> >
> >The problem lies in that to reach each other they need to 'transit'
via our
> >network and according to BGP, one cannot announce back the client
prefixes
> >learnt from the other network and vice versa as both of them are
running the
> >same ASN. This is to prevent routing loops.
> >
> >In this case is there a method to overwrite this so that the first
/19
> >network will be able to reach the second /19 network via ours?
> >
> >Thanks in advance.
> >
> >-nick/
>
>
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:47 EDT