Re: AS-override with AS Path Prepend

Ah right correct. I had a different understanding, but you are correct on this one :-)

-- 
Regards,
Rick Mur
CCIE2 #21946 (R&S / Service Provider)
Sr. Support Engineer  IPexpert, Inc.
URL: http://www.IPexpert.com
On 30 apr 2010, at 14:08, Carlos G Mendioroz wrote:
> That's not what I meant.
> There has to be no intervening AS between SP's AS and customer's AS.
> 
> Say your SP's AS is 100 and customer's AS is 555, an AS path of
> "555 555 555 25" would become "100 100 100 100 25" but
> "40 555" would go to "100 40 555".
> 
> -Carlos
> 
> Rick Mur @ 30/04/2010 8:56 -0300 dixit:
>> Like Carlos said ALL AS numbers are overwritten with the ISP AS. Of course only when they are together, otherwise you would have a loop and BGP always drops these updates.
>> 
>> 
>> -- Regards, Rick Mur CCIE2 #21946 (R&S / Service Provider) Sr. Support Engineer  IPexpert, Inc. URL: http://www.IPexpert.com On 26 apr 2010, at 23:47, Carlos G Mendioroz wrote:
>>>> All of them are changed, as long as they are together (i.e. no
>>>> intervening ASs).
>>>> 
>>>> -Carlos
>>>> 
>>>> Ahmed Mohamed @ 26/04/2010 18:36 -0300 dixit:
>>>>>>>> Hello Everybody,
>>>>>>>> 
>>>>>>>> if AS-override is used on a PE, where the CE is configured with as-prepend,
>>>>>>>> how would this integrate?
>>>>>>>> 
>>>>>>>> would all prepended AS's changed into the ISP's AS ? , or prepend os
>>>>>>>> bypassed and only one AS is changed?
>>>>>>>> 
>>>>>>>> thx
>>>>>>>> Ahmed
>>>>>> 
>>>>>> 
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>>>> Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
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> Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net