Re: LOCAL AS

From: shiran guez (shiranp3@gmail.com)
Date: Mon Nov 19 2007 - 10:10:32 ART


the LOCAL-AS is used to present to your neighbor a different AS then your
own and the no-prepand will remove completely your own BGP AS.

so if you have

R1
router bgp 100
nei 2.2.2.2 remot 200

R2
router bgp 200
nei 1.1.1.1 remot 600 <-- here you see that R2 is trying to peer with you on
AS 600 although R1 is in AS100

So you can

R1
 router bgp 100
nei 2.2.2.2 remot 200
nei 2.2.2.2 local-as 600

if you inject a network R2 will see the route as if it came from:

*>1.1.10.10 100 600

but if you add the

 nei 2.2.2.2 local-as 600 no-prepand then you will see:

*>1.1.10.10 600

I hope it was clear enough

On Nov 19, 2007 9:03 AM, <itsfortarget@gmail.com> wrote:

> hello,
>
> What is the need of LOCAL-AS command with BGP neighbour Command and watht
> is the significant of LOCAL-AS No prepend
>
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-- 
Shiran Guez
MCSE CCNP NCE1
http://cciep3.blogspot.com
http://www.linkedin.com/in/cciep3


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