From: Brian McGahan (brian@cyscoexpert.com)
Date: Sun Sep 15 2002 - 23:18:47 GMT-3
Harbir,
^$ is all you need. I just tested it. Are you sure you cleared
the BGP session after you applied the filter?
HTH
Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
http://www.cyscoexpert.com
Voice: 847.674.3392
Fax: 847.674.2625
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Nick Shah
> Sent: Sunday, September 15, 2002 7:51 PM
> To: Kohli, Harbir; ccielab@groupstudy.com
> Subject: Re: BGP
>
> Harbir
>
> If the idea is to prevent your 'confed sub-as' from becoming a transit
AS,
> you need as-path ACL to be something like this
>
> permit ^\(100\)$
>
> put your sub-as in lieu of 100
>
> rgds
> Nick
> ----- Original Message -----
> From: "Kohli, Harbir" <harbir.kohli@bellnexxia.com>
> To: <ccielab@groupstudy.com>
> Cc: "'Brian McGahan'" <brian@cyscoexpert.com>
> Sent: Saturday, September 14, 2002 12:11 PM
> Subject: RE: BGP
>
>
> > HI,
> > How do you make sure that your AS is not used as a transit AS when
your
> AS
> > is a confed of 6, 250, 8.
> >
> > >From Halabi's book I though all you had to do was
> > Ip as-path access-list 1 permit ^$
> >
> > Router bgp x
> > Neighbor a.b.c.d filter-list 1 out
> > End
> >
> > But this does not work when using confederations.
> >
> > What would be the simplest solution?
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