From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Mon Jun 13 2005 - 18:33:12 GMT-3
Hi Hans,
Check out the Internetwork Expert CCIE R&S Lab Workbook Sample
Lab here:
http://www.internetworkexpert.com/downloads/iewb-rs.sample.lab.pdf
Look at tasks 6.5 - 6.7 and 6.8 - 6.11 along with the solutions
for them. These illustrate how to control both inbound and outbound
traffic flow.
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: Hans None [mailto:acsyao@hotmail.com]
> Sent: Monday, June 13, 2005 4:27 PM
> To: Brian McGahan; ccielab@groupstudy.com
> Subject: RE: control bgp traffic flow
>
> 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
> >Outside US: 775-826-4344 x 705
> >24/7 Support: http://forum.internetworkexpert.com
> >Live Chat: http://www.internetworkexpert.com/chat/
> >
> >
> > > -----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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>
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