From: Hans None (acsyao@hotmail.com)
Date: Mon Jun 13 2005 - 18:27:10 GMT-3
do you have a sample configuration?
>From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
>To: "Hans None" <acsyao@hotmail.com>,<ccielab@groupstudy.com>
>Subject: RE: control bgp traffic flow
>Date: Mon, 13 Jun 2005 17:12:36 -0400
>
>Hans,
>
> This is accomplished by manipulating BGP attributes per the BGP
>best path selection process. The bestpath selection process can be
>found here:
>
>http://www.cisco.com/warp/public/459/25.shtml
>
> Typically the attributes of weight and local-preference are used
>to affect how traffic leaves your AS. Modifying these attributes on
>inbound routing information will affect the outbound path selection.
>The attributes of AS-Path and MED are used to affect how traffic enters
>your AS. Modifying these attributes on outbound routing information
>will affect the inbound traffic flow.
>
> For specific route-map syntax see the following link:
>
>http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_command_
>reference_chapter09186a00800ca79e.html#wp1170638
>
>
>HTH,
>
>Brian McGahan, CCIE #8593
>bmcgahan@internetworkexpert.com
>
>Internetwork Expert, Inc.
>http://www.InternetworkExpert.com
>Toll Free: 877-224-8987 x 705
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>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>Of
> > Hans None
> > Sent: Monday, June 13, 2005 2:44 PM
> > To: ccielab@groupstudy.com
> > Subject: control bgp traffic flow
> >
> > All,
> >
> >
> > I have heard that there is a way to control bgp traffic flow.
> >
> > for example, on a specific ebgp router, there are muiltple ebgp
>service
> > providers connecting on to it.
> >
> > if traffic is coming from service provider A, the router needs to send
> > traffic back to service provider A.
> >
> > if traffic is coming from service provider B, the router needs to send
> > traffic back to service provider B.
> >
> > this is realized by bgp route map.
> >
> > Can anyone let me know how to do that?
> >
> > Thanks,
> >
> >
> > Hans
> >
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