[nsp] BGP Dual AS feature in 12.0(27)S

Lucas Iglesias l.iglesias at tiba.com
Wed Feb 4 07:54:58 EST 2004

I don't know about this particular new feature, but when I had to change our
AS Number in our production routers I found very useful the "local-as"
command, which allows you to have a peer session with a different local AS
Then, after you 've changed all your ebgp peers, you change to your new AS

RCORE(config-router)#nei local-as ?
  <1-65535>  AS number used as local AS

Hope this help you.

-----Mensaje original-----
De: Andy Furnell [mailto:andy at furnell.org.uk] 
Enviado el: Miércoles, 04 de Febrero de 2004 08:03 a.m.
Para: cisco-nsp at puck.nether.net
Asunto: [nsp] BGP Dual AS feature in 12.0(27)S


Looking through the release notes for 12.0S, I see a new feature in


While the feature name has piqued my interest, the link is broken... does
anyone have any more information about what this feature actually is, how it
works, and how I can go about configuring it? In the middle of planning an
AS merge right now, and the ability to have multiple BGP processes with
multiple AS numbers would certainly come in handy :) I tried loading this
release onto a box in the lab, but couldn't see any obvious new BGP features
that would match the description.

Thanks :)


Andy Furnell
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