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 - 04:12:00 EDT