GroupStudy.com GroupStudy.com - A virtual community of network engineers
 Home  BookStore  StudyNotes  Links  Archives  StudyRooms  HelpWanted  Discounts  Login
Re: Fwd: bgp reg-exp for directly connected costumers posted 09/13/2007
[Chronological Index] [Thread Index] [Top] [Date Prev][Date Next] [Thread Prev][Thread Next]


Your regex would also work for incoming on RouterB.

Sincerely
Ben


On 9/13/07, Carlos Trujillo Jimenez <nergal888@xxxxxxxxxxx> wrote:
>
> what about this option applied inbound in routerB as a route-map or a
> filter-list but applied inbound.
>
> ip as-path access-list 1permit ^[0-9]+(_[0-9]+)?$
>
> Is this ok??
>
>
>
>
> >From: "Rich Collins" <nilsi2002@xxxxxxxxx>
> >Reply-To: "Rich Collins" <nilsi2002@xxxxxxxxx>
> >To: "Cisco certification" <ccielab@xxxxxxxxxxxxxx>
> >Subject: Fwd: bgp reg-exp for directly connected costumers
> >Date: Wed, 12 Sep 2007 16:34:45 -0400
> >MIME-Version: 1.0
> >Received: from lists.groupstudy.com ([207.44.210.9]) by
> >bay0-mc7-f8.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.2668); Wed,
> 12
> >Sep 2007 13:39:25 -0700
> >Received: (from sympa@xxxxxxxxx)by lists.groupstudy.com
> >(8.12.11.20060308/8.11.6) id l8CKdL5J002153;Wed, 12 Sep 2007 16:39:21
> -0400
> >Received: from groupstudy.com (www.groupstudy.com [209.51.144.7])by
> >lists.groupstudy.com (8.12.11.20060308/8.11.6) with ESMTP id
> >l8CKYi9d002087for <ccielab@xxxxxxxxxxxxxxxxxxxx>; Wed, 12 Sep 2007
> 16:34:44
> >-0400
> >Received: from groupstudy.com (groupstudy.com [127.0.0.1])by
> groupstudy.com
> >(8.12.11.20060308/8.12.11) with ESMTP id l8CKYo62025497GroupStudy Mailer;
> >Wed, 12 Sep 2007 16:34:50 -0400
> >Received: (from listserver@xxxxxxxxx)by groupstudy.com
> >(8.12.11.20060308/8.12.11/Submit) id l8CKYokT025495for ccielabxhiddenx;
> >Wed, 12 Sep 2007 16:34:50 -0400
> >Received: from nz-out-0506.google.com (nz-out-0506.google.com
> >[64.233.162.229]) by groupstudy.com (8.12.11.20060308/8.12.11)
> with  ESMTP
> >id l8CKYmKH025475 GroupStudy Mailer; Wed, 12 Sep 2007 16:34:48  -0400
> >Received: by nz-out-0506.google.com with SMTP id i1so222138nzh for
> ><ccielab@xxxxxxxxxxxxxx>; Wed, 12 Sep 2007 13:34:46 -0700 (PDT)
> >Received: by 10.114.78.1 with SMTP id a1mr5862641wab.1189629285140; Wed,
> >12 Sep 2007 13:34:45 -0700 (PDT)
> >Received: by 10.140.131.9 with HTTP; Wed, 12 Sep 2007 13:34:45
> -0700  (PDT)
> >X-Message-Delivery: Vj0zLjQuMDt1cz0wO2k9MDtsPTA7YT0w
> >X-Message-Info:
>
> >+wzvjddt7X37SwpUa0gksHTnN4/HAK9IPbn/2WLPUdgc9Tjn80tboZZ+cSaskBOdk63i7t0q8N/a8dfAXFw9hnptr8JJyUH3
> >DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com
> ;  s=beta;
> >
>
> >h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references;
> >  bh=MRpNArcXy7Z14Z3Ied7LtAqGdJRtb+9ocdQ6HVmuK1s=;
>
> >b=RWEJ8BtvB4mVLf7Pr7O0FLk6CDyYDpuWylYpeD58tQPLUFfCr+DAQWoS+X3mAhKabAW1TVDMArnBvvwsW1ec0iiIXHw8nLLcZOdMKYhDE3v0Upc9dQ8W2fTQtU+mb1CHGKC/jMTHU3/pv2wL8LohwpO4b5zQ6suwLL7gw5X4ewE=
> >DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta;
>
> >h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references;
> >
>
> >b=pSsEzG7cc9ViI/hgXpD1cGBzEzHHyTz7WuIpRrdQlkBtJytntejA7f/6gByKYVo7pHTVLezI10/k7vDCpkgN70EzJmxxLjQIjmDjKyOFv9QpHXRNnIzAi57l5XkkRpn+D90JAaYxJCsgJnUD9RgpHSxzZypVf7VzzRC4lSKBOfs=
> >References: <BAY136-F30A4EFF956E2CEB4492A0FE4C20@xxxxxxx>
> ><4b4dda980709121333n340b2da4tc34dc6db99ceb69f@xxxxxxxxxxxxxx>
> >X-Converted-To-Plain-Text: from multipart/alternative by GroupStudy
> >X-Converted-To-Plain-Text: Alternative section used was text/plain
> >X-ASK-Info: Whitelist match [from nilsi2002@xxxxx\.com] (2007/09/12
> >16:34:50)
> >X-Loop: ccielab@xxxxxxxxxxxxxx
> >X-Sequence: 1191
> >Errors-to: ccielab-owner@xxxxxxxxxxxxxx
> >Precedence: bulk
> >X-no-archive: yes
> >List-Id: <ccielab.groupstudy.com>
> >List-Help: <mailto:sympa@xxxxxxxxxxxxxx?subject=help>
> >List-Subscribe: <mailto:sympa@xxxxxxxxxxxxxx?subject=subscribe%20ccielab>
> >List-Unsubscribe:
> ><mailto:sympa@xxxxxxxxxxxxxx?subject=unsubscribe%20ccielab>
> >List-Post: <mailto:ccielab@xxxxxxxxxxxxxx>
> >List-Owner: <mailto:ccielab-request@xxxxxxxxxxxxxx>
> >Return-Path: ccielab-owner@xxxxxxxxxxxxxx
> >X-OriginalArrivalTime: 12 Sep 2007 20:39:25.0748 (UTC)
> >FILETIME=[020D1F40:01C7F57D]
> >
> >For action 1 what about ?:
> >
> >ip as-path access-list 1 permit ^[0-9]*$  (This covers routes generated
> >from
> >directly connected AS's and also locally generated prefixes.
> >
> >neighbor B.B.B.B filter-list 1 out
> >
> >Rich
> >
> >On 9/12/07, Carlos Trujillo Jimenez <nergal888@xxxxxxxxxxx> wrote:
> > >
> > > Hi all.
> > >
> > > Im quite confused, please if someone helps me clarify, in the
> following
> > > scenario think both solutions will work.
> > >
> > > Scenario:
> > >
> > >
>
> >(AS500)ROUTERX---------------------(AS200)ROUTERA-------------------------------ROUTERB(AS300)
> > >
> > >
> > > ROUTERA is forming an EBGP peering relationship ith both ROUTERB and
> > > ROUTERX.
> > >
> > > Action1. (configuration only in ROUTERA)
> > > I want to RouterA send only its locally originated prefixes, as well
> as
> > > prefixes ORIGINATED from his directly connected cosumters to router B.
> > >
> > > ROUTERA:
> > >
> > > ip as-path access-list 1 permit  ^200_[0-9]*$
> > >
> > > route-map ONLY-AS200-ANDCOSTUMERS
> > > match as-path 1
> > >
> > > router bgp 200
> > > neighbor ROUTERB route-map ONLY-AS200-COSTUMERS out
> > >
> > >
> > > Action2.(configuration only in ROUTERB)
> > > I want the same purpose as action 1 but only configuring it at
> ROUTERB,
> > > mean
> > > only recibe prefixes originates by its neighbor routerA as 200, and
> its
> > > directly connected costumers
> > >
> > > ROUTERB:
> > > ip as-path access-list 1 permit ^200_[0-9]*$
> > >
> > > route-map ONLY-AS200-ANDCOSTUMERS
> > > match as-path 1
> > >
> > > router bgp 300
> > > neighbor ROUTERA route-map ONLY-AS200-COSTUMERS in
> > >
> > > The as-path access-list is the same in both actions, but with the
> route
> > > map
> > > apliedd in the first outbound, and in the second inbound, summarizing
> in
> > > the
> > > sender applied outbound and in the receiber applied inbound.
> > >
> > > Please correct me if Im wrong with this one.
> > >
> > > _________________________________________________________________
> > > Charla con tus amigos en lmnea mediante MSN Messenger:
> > > http://messenger.latam.msn.com/
> > >
> > >
> _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> >
> >_______________________________________________________________________
> >Subscription information may be found at:
> >http://www.groupstudy.com/list/CCIELab.html
>
> _________________________________________________________________
> MSN Amor: busca tu = naranja http://latam.msn.com/amor/
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html