Re: AS-override with AS Path Prepend

From: Raghava Thumalakoti <raghava.rao85_at_gmail.com>
Date: Fri, 30 Apr 2010 17:50:15 +0530

Ok, thnks so instead of touching customers router and set-up

Just override on my PE, that should be fine to carry customers traffic to
other end through my core to other PE and finally back to my customer branch
or hub location

Raghava

On Fri, Apr 30, 2010 at 5:45 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar>wrote:

> That depends on your topology, and allowas-in is kind of more dangerous,
> IMHO. Use at your own risk :)
>
> Demo case is customer wanting branch traffic to traverse hub location.
>
> -Carlos
>
>
> Raghava Thumalakoti @ 30/04/2010 9:05 -0300 dixit:
> > Hi All
> >
> > i had a queryon asallow in and asoveride options
> > we can use any one of the following write when same as is connected on
> > PE routers.
> >
> >
> > asallowin on CE router
> > or
> > asoveride on PE router...
> >
> > Am i right, please let me know
> >
> > Raghava
> >
> >
> > On Fri, Apr 30, 2010 at 5:26 PM, Rick Mur <rmur_at_ipexpert.com
> > <mailto:rmur_at_ipexpert.com>> wrote:
> >
> > 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
> > >>
> > >>
> > >> Blogs and organic groups at http://www.ccie.net
> > >>
> > >>
> >
> _______________________________________________________________________
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> > >>
> > >>
> > >>
> > >>
> > >>
> > >
> > > --
> > > Carlos G Mendioroz <tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar>>
> > LW7 EQI Argentina
> > >
> > >
> > > Blogs and organic groups at http://www.ccie.net
> > >
> > >
> >
> _______________________________________________________________________
> > > Subscription information may be found at:
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> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> >
> _______________________________________________________________________
> > Subscription information may be found at:
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> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --
> > Regards,
> >
> > Raghava Rao T.V
> > Mumbai
> >
>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>

-- 
Regards,
Raghava Rao T.V
Mumbai
Blogs and organic groups at http://www.ccie.net
Received on Fri Apr 30 2010 - 17:50:15 ART

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