RE: RR & metrics not being propergated to ebgp peer from RR

Originate the prefixes on the CE so that the IGP metric will be copied to MED. If that's not an option then you'll have to manually set the MED outbound on the CE towards the PE if you want to get it to propagate.

HTH,

Brian McGahan, CCIE #8593 (R&S/SP/Security), CCDE #2013::13
bmcgahan_at_INE.com

Internetwork Expert, Inc.
http://www.INE.com

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Tony Singh
Sent: Thursday, February 28, 2013 2:36 PM
To: Brian Dennis
Cc: Cisco certification
Subject: Re: RR & metrics not being propergated to ebgp peer from RR client

Ok thanks for setting me straight Brain, what would be the best way to achieve the desired goal in that case or is it not possible

On 28 February 2013 20:25, Brian Dennis <bdennis_at_ine.com> wrote:

> MED is a non-transitive attribute which means in your case if the CE
> learns a path via iBGP you can't pass the MED for that path to an eBGP
> peer. If the CE originated the path into BGP itself then it would be
> passed to its eBGP peer (PE).
>
> --
> Brian Dennis, CCIEx5 #2210 (R&S/ISP-Dial/Security/SP/Voice)
> bdennis_at_ine.com
>
> INE, Inc.
> http://www.INE.com
>
>
>
>
> On 2/28/13 3:05 PM, "Tony Singh" <mothafungla_at_gmail.com> wrote:
>
> >Hi Experts
> >
> >I may be missing some fundamental here but say the following
> >
> >SW>CE>PE
> >
> >SW is RR but also announcing several subnets into bgp process which
> >reference preferred metrics
> >
> >these metric are advertised out to CE, CE see's these and advertises
> >these metrics out to PE but PE does not see these metrics in bgp rib....?
> >
> >anything im doing wrong....
> >
> >
> >
> >CE#$ ipv4 unicast neighbors x.x.x.x advertised-routes BGP table
> >version is 20, local router ID is x.x.x.x Status codes: s suppressed,
> >d damped, h history, * valid, > best, i - internal,
> > r RIB-failure, S Stale
> >Origin codes: i - IGP, e - EGP, ? - incomplete
> >
> > Network Next Hop Metric LocPrf Weight Path
> >*>ix.x.x.x x.x.x.x 200 100 0 i
> >*>ix.x.x.x x.x.x.x 200 100 0 i
> >*>ix.x.x.x
> > x.x.x.x 200 100 0 i
> >*>ix.x.x.x x.x.x.x 100 200 0 i
> >*>ix.x.x.x
> > x.x.x.x 100 200 0 i
> >*> x.x.x.x
> > 0.0.0.0 100 200 32768 i
> >*> x.x.x.x
> > 0.0.0.0 100 200 32768 i
> >*> x.x.x.x
> > 0.0.0.0 100 200 32768 i
> >*>ix.x.x.x
> > x.x.x.x 100 200 0 i
> >
> >Total number of prefixes 9
> >
> >
> >
> >PE#show ip bgp
> >BGP table version is 28, local router ID is x.x.x.x Status codes: s
> >suppressed, d damped, h history, * valid, > best, i - internal,
> > r RIB-failure, S Stale
> >Origin codes: i - IGP, e - EGP, ? - incomplete
> >
> > Network Next Hop Metric LocPrf Weight Path
> >* x.x.x.x x.x.x.x 0 xxxxx i
> >*> x.x.x.x 0 xxxxx i
> >* x.x.x.x x.x.x.x 0 xxxxx i
> >*> x.x.x.x 0 xxxxx i
> >* x.x.x.x
> > x.x.x.x 0 xxxxx i
> >*> x.x.x.x 0 xxxxx i
> >* x.x.x.x x.x.x.x 0 xxxxx i
> >*> x.x.x.x 0 xxxxx i
> >* x.x.x.x
> > x.x.x.x 100 0 xxxxx i
> >* x.x.x.x 0 xxxxx i
> >*> 0.0.0.0 0 xxxxx i
> >* x.x.x.x
> > x.x.x.x 0 xxxxx i
> >* x.x.x.x 100 0 xxxxx i
> >*> 0.0.0.0 0 xxxxx i
> >
> >
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Received on Thu Feb 28 2013 - 16:15:47 ART