You have the option to suppress your actual AS from the AS path (no-prepend),
or not.
By default your AS path will look like {local-AS your AS}.
This will not suppress any routes, it is supposedly used for migration
purposes, (for example, two companies have merged and wish to keep their
peering agreements).
To the peers of AS A, route X will appear as coming from A, and to the peers of
AS B, route X will appear as coming from B.
If you want to filter anything, use filter-list|prefix-list|route-map etc...
Gustavo Novais
-----Original Message-----
From: Alex Haan [mailto:[EMAIL PROTECTED]
Sent: terça-feira, 3 de Julho de 2007 19:59
To: Gustavo Novais; [EMAIL PROTECTED]; [EMAIL PROTECTED];
cisco-nsp@puck.nether.net
Subject: [SPAM] - RE: [c-nsp] Configure two AS on one BGP router - Dynamic IP
detected dnsbl.sorbs.net
I guess that this enables advertisement of one AS's network while
suppressing the advertisement of the networks from the other AS, right? One
newb question, can I advertize the networks for both AS through one AS?
Thanks,
Alex
>From: "Gustavo Novais" <[EMAIL PROTECTED]>
>To: "Paul Stewart" <[EMAIL PROTECTED]>,"Joseph Jackson"
><[EMAIL PROTECTED]>,"Alex Haan"
><[EMAIL PROTECTED]>,<cisco-nsp@puck.nether.net>
>Subject: RE: [c-nsp] Configure two AS on one BGP router
>Date: Tue, 3 Jul 2007 19:39:03 +0100
>
>You can also look at neighbor X.X.X.X local-as, to impersonate other AS's
>
>Gustavo Novais
>
>
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] On Behalf Of Paul Stewart
>Sent: terça-feira, 3 de Julho de 2007 18:45
>To: 'Joseph Jackson'; 'Alex Haan'; cisco-nsp@puck.nether.net
>Subject: Re: [c-nsp] Configure two AS on one BGP router
>
>Never done it...
>
>But can you not create:
>
>router bgp 12345
>network x.x.x.x
>etc...
>
>router bgp 98765
>network x.x.x.x
>
>into the same router??
>
>Paul
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] On Behalf Of Joseph Jackson
>Sent: Tuesday, July 03, 2007 1:39 PM
>To: Alex Haan; cisco-nsp@puck.nether.net
>Subject: Re: [c-nsp] Configure two AS on one BGP router
>
>You could do it inside a VRF, but I don't know if it would work for what
>you want since it makes seprate routing tables.
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of Alex Haan
> > Sent: Tuesday, July 03, 2007 10:34 AM
> > To: cisco-nsp@puck.nether.net
> > Subject: [c-nsp] Configure two AS on one BGP router
> >
> > Hi Everyone,
> >
> > Is it possible to configure two ASes on one BGP router? If it's
> > possible, how many feeds we are going to receive from an ISP peer? One
> > or Two?
> >
> > Thanks,
> >
> > Alex
> >
> > _________________________________________________________________
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