From: Gupta, Gopal (NWCC) (gopal.gupta@hp.com)
Date: Wed Nov 28 2007 - 13:20:15 ART
You are right that routes originated in AS 200 but may or may not
transit through the other Ass.This is what differs from C option.
HTH
Gops
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Carlos Trujillo Jimenez
Sent: Wednesday, November 28, 2007 20:20
To: dtandou@yahoo.com; smorris@ipexpert.com; ccielab@groupstudy.com
Subject: RE: Regular Expression
Importance: Low
I think, routes originated ONLY IN AS 200 is the match for the B option.
>B) ip as-path access-list 2 permit _200$ => routes originated in AS 200
>From: Tandou Mohamed <dtandou@yahoo.com>
>>X-OriginalArrivalTime: 28 Nov 2007 14:43:10.0484 (UTC)
>>FILETIME=[FF356D40:01C831CC]
>
>Now i understand D. what about B? the origin of the routes will be AS
200
>only or can be any adjacent neighbor to AS 200 ?
>
> Thanks,
>
> Mohamed
>
>Scott Morris <smorris@ipexpert.com> wrote:
> D would be routes LEARNED FROM AS 690 (your peer)
>
>HTH,
>
>
>Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
JNCIE-M
>#153, JNCIS-ER, CISSP, et al.
>CCSI/JNCI-M/JNCI-ER
>VP - Technical Training - IPexpert, Inc.
>IPexpert Sr. Technical Instructor
>
>A Cisco Learning Partner - We Accept Learning Credits!
>
>smorris@ipexpert.com
>
>
>
>Telephone: +1.810.326.1444
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>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Tandou Mohamed
>Sent: Wednesday, November 28, 2007 8:34 AM
>To: ccielab@groupstudy.com
>Subject: Regular Expression
>
>Hello GS,
>can someone check this out if i am correct about these definition also
any
>comment on B,C,D and E those really confuse me sometimes.
>
>Thanks,
>
>Mohamed
>
>A) ip as-path access-list 1 permit _109_ => routes containing or
>transiting AS 109
>B) ip as-path access-list 2 permit _200$ => routes originated in AS
>200
>C) ip as-path access-list 2 permit ^100$ => routes originated by a
>neighbor in AS 100
>D) ip as-path access-list 3 permit ^690_ => routes originating from
>AS 690
>E) ip as-path access-list 3 permit ^$ => routes originating
>from this AS (my AS)
>
>
>
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