From: Peter Ding (pding@cisco.com)
Date: Tue Oct 12 2004 - 00:09:34 GMT-3
How about this one?
^5(_[0-9]+)?$
PD
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
James
Sent: Monday, October 11, 2004 7:49 PM
To: John Matus
Cc: lab
Subject: Re: regex question for bgp
On Mon, Oct 11, 2004 at 07:34:15PM -0700, John Matus wrote:
> how would you solve the following requirement?
>
> R1 is in AS 1 and are connected to a bb router in AS 5. you want to
> implement a filtering policy on R1 to only accept routes that come
> from either AS 5 or an AS connected directly to AS 5. so AS 5 can be
> in the as path as well as one more AS. how would you create a regex
> to satisfy this requirement? i'm pretty stumped <not a regex pro>
^5_[0-9]*$
HTH,
-J
-- James Jun TowardEX Technologies, Inc. Technical Lead Network Design, Consulting, IT Outsourcing james@towardex.com Boston-based Colocation & Bandwidth Services cell: 1(978)-394-2867 web: http://www.towardex.com , noc: www.twdx.net
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