RE: Question about AS-Path

From: Scott Morris (smorris@ipexpert.com)
Date: Fri Mar 28 2008 - 11:20:10 ART


If there are ANY non-private AS numbers in the path, this will not work.
You can always try creating an aggregate address which will essentially
nullify the AS path.

Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE-M
#153, JNCIS-ER, CISSP, et al.
CCSI/JNCI-M/JNCI-ER
VP - Technical Training - IPexpert, Inc.
IPexpert Sr. Technical Instructor

smorris@ipexpert.com

 

Telephone: +1.810.326.1444
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of dara
tomar
Sent: Friday, March 28, 2008 9:55 AM
To: Matthew Tang
Cc: ccielab@groupstudy.com
Subject: Re: Question about AS-Path

*Hi ,

This can be achieved using:

pe2(config)#router bgp 4755
pe2(config-router)#nei 1.1.1.1 remove-private-as

config this on your router's wherever you want to strip the private-AS path.
!!! Neighbor specific !!! command.

Regards,
Dara
*

On Fri, Mar 28, 2008 at 12:47 PM, Matthew Tang <Matthew.tang@gmail.com>
wrote:

> Gents,
>
> I have one question about as-path, I want to remove some private AS
> from the as-path like this:
>
> 65001 123 456 65002 65003 (remove first one and keep 65002 and
> 65003)
>
> I know juniper can remove the private from left to right and stops
> when it hits a public AS, not sure what the cisco solution is? Thanks
>
> Matthew
>
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