RE: Other than AS-prepending?

From: Hotmail (hussamkibbi@hotmail.com)
Date: Tue Mar 03 2009 - 15:45:19 ARST


I didn't find the message yet in archive, but I believe it can be done by:
neighbor{ip-address} advertise-map {map1-name} non-exist-map {map2-name}
As map1-name is our local networks and map2-name will be the network between
myself and ISP1

Right?

-----Original Message-----
From: markom@gmail.com [mailto:markom@gmail.com] On Behalf Of Marko
Milivojevic
Sent: Tuesday, March 03, 2009 10:21 PM
To: Hotmail
Cc: ccielab@groupstudy.com
Subject: Re: Other than AS-prepending?

Hi,

some time ago (few months) I wrote on ccie list about this subject.
The solution is to use "ISP-specific communities" to make them prefer the
traffic. Try searching for that message in the archive. I think it will be
of help.

--
Marko
CCIE #18427 (SP)
My network blog: http://cisco.markom.info/

On Tue, Mar 3, 2009 at 16:12, Hotmail <hussamkibbi@hotmail.com> wrote: > Hi Experts, > > Is there a way to prefer incoming traffic other than as-prepening(or > any other attribute like MED), by using conditional advertisment or > some other features? > > The thing is that As-Prepending not always work for all routes, there > is still some routes won't be prefered for any reason. > > So is there a way like to assume this BGP session (backup one(r2) ) to > ISP2 is down until the primary one(r1) to ther ISP1 really get down ? > > r1(Active)--EBGP-->ISP1 r1--ibgp---r2 > r2 (Standby)--EBGP-->ISP2 > > > Cheers, > Hussam > > > Blogs and organic groups at http://www.ccie.net > > ______________________________________________________________________ > _ Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net



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