[nsp] BGP RegEx

[Cristian BICA]

ip as-path access-list 101 deny ^1_2$
ip as-path access-list 101 permit .*

router bgp X
 nei a.b.c.d filter-list 101 in

for more advanced regexps read
http://www.cisco.com/en/US/tech/tk365/tk80/technologies_tech_note09186a00800c95bb.shtml#asregexp

> Hi everyone,
>
> I am trying to do BGP filtering and is wondering if
> anyone can help me out on the following issue.
>
> Assuming I have an AS-PATH as follows:
>
> 1 2
> 1 3
> 1 4
>
> For route-maping, is it possible to write a regex that
> filters out only "1 2" but accepts everything else
> that is "1 *" ?
>
> Thanks,
>
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-- 
Cristian  Bica