Re: Tune bad a BGP route's metric, it disappears from "show ip

From: Serhat Aslan (serhatworks@gmail.com)
Date: Mon Jul 09 2007 - 22:12:25 ART


  Hi John,
  Bgp MED attribute is an non-transitive option + bgp announce best
metric, so when you want to set this option in a redundant ebgp peering
sessions with different routers, you have to care both peers the same
options relatively. Probably you did step-1 and hadn't considered step-2, or
I understood the problem wrong :)

I mean (pseudo)

step-1)
  R1
   prefix-list choosen_path
   route-map MED seq 10
        match choosen_path
        set med 100

   route-map MED seq 20
         set med 0

step-2)
  R2
   prefix-list choosen_path
   route-map MED seq 10
        match choosen_path
        set med 0

   route-map MED seq 20
         set med 100

..............

Serhat Aslan

On 7/10/07, Mike Kraus (mikraus) <mikraus@cisco.com> wrote:
>
> Normally you set MED on outbound, to send it to your peer so it can be
> used in chosen the best path. But, I wouldn't think that setting it
> inbound should make the route disappear either. Can you post your
> configs?
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> johngibson1541@yahoo.com
> Sent: Monday, July 09, 2007 4:19 PM
> To: ccielab@groupstudy.com
> Subject: Tune bad a BGP route's metric, it disappears from "show ip bgp"
> in the tunning router. Any thing wrong?
>
> Appreciate any response.
>
> I just want to see the route's metric increase (make it a worse route by
> setting metric to 100 instead of default 0).
>
> I use "neighbor ... route-map ... in". This is a eBGP neighbor.
>
> But it disappears from "show ip bgp" all together.
>
>
> John
>
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