[c-nsp] [SPAM] - RE: Configure two AS on one BGP router - Dynamic IP detected dnsbl.sorbs.net

[Gustavo Novais]

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:alexshang123 at hotmail.com] 
Sent: terça-feira, 3 de Julho de 2007 19:59
To: Gustavo Novais; paul at paulstewart.org; JJackson at aninetworks.com; cisco-nsp at 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" <gustavo.novais at novabase.pt>
>To: "Paul Stewart" <paul at paulstewart.org>,"Joseph Jackson" 
><JJackson at aninetworks.com>,"Alex Haan" 
><alexshang123 at hotmail.com>,<cisco-nsp at 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: cisco-nsp-bounces at puck.nether.net 
>[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Paul Stewart
>Sent: terça-feira, 3 de Julho de 2007 18:45
>To: 'Joseph Jackson'; 'Alex Haan'; cisco-nsp at 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: cisco-nsp-bounces at puck.nether.net
>[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Joseph Jackson
>Sent: Tuesday, July 03, 2007 1:39 PM
>To: Alex Haan; cisco-nsp at 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: cisco-nsp-bounces at puck.nether.net
> > [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Alex Haan
> > Sent: Tuesday, July 03, 2007 10:34 AM
> > To: cisco-nsp at 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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