Re: How does AS-override work?

Hope this will help you ......

+) Scenario without As-override :

R1 (As 64512 ) <<<<<------>>>>>> R2 (As 64513)ASoverride
<<<<<<-------- >>>>>>R3 (As 64514)

192.168.10.0/24 i 192.168.10.0/24 64512 i
       192.168.10.0/24 64513 64512 i

+) Scenario with As-override configured @ R2

R1 (As 64512 ) <<<<<------>>>>>> R2 (As 64513)ASoverride
<<<<<<-------- >>>>>>R3 (As 64514)

192.168.10.0/24 i 192.168.10.0/24 64512 i
       192.168.10.0/24 64513 i

+) when AS Override is used, AS 64512 in the AS-PATH is replaced with
the AS number of the sending BGP router R2 ,which is 64513.

+) Any other occurrences (further down the AS-PATH) of the receiving
router's AS number are not replaced because they indicate a real
routing information loop.

Rsharma

On 5/29/09, Jitendra Anbu <Jitendra.Anbu_at_optus.com.au> wrote:
> Hi GS,
>
> Can some explain how AS-override works? If I am trying to strip off a
> private
> AS from an AP-Path will this command do the trick?
>
> ---------------------------------------------------------
> Regards,
>
> Jit
>
>
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Received on Fri May 29 2009 - 10:41:39 ART