On Thu, 2009-05-07 at 08:22 +0300, Rocker Feller wrote: > I have been working with BGP for a few months now and am trying to get > a grasp of it. > > I have an assignment that requires to have multiple bgp sessions > running on a single router and the prefixes advertised from each > prefix appearing so. > > Does this make sense? Am a bit foggy on this and would appreciate any > direction advise on how this can be achieved. > > What do I want to achieve? > In short I want to consolidate to AS numbers in to one.
AFAIK you can't have two BGP instances on one Cisco device. You can do something else though, namely use "local-as" on your neighbor session. This would present your router as belonging to another AS. +--------+ +--------+ | AS 100 |----------| AS 200 | +--------+ +--------+ If you're on the left, paths from you would normally look like e.g. "100 i" to the ASBR in AS 200. If you configure "local-as 300" he would instead see "300 100 i", as if you stuck the other AS in between you. >From your side his paths would look like "300 200 i". > Which options do I have to achieve this and with minimal disruptions > to my customers? Changing local-as requires the session to be reset to take effect. Regards, Peter _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
