[nsp] BGP community issue or provider issue?

[MPuras@solunet.com]

If you issue a "show ip bgp neighbor x.x.x.x" do you see were it shows you
that the community was sent to that neighbor?  It should say "community
attribute sent to this neighbor".  If is being sent, they should then be
able to issue a "show ip bgp x.x.x.x" and tell if the route came accross
with that community.

It could also be that they are looking at the old decimal community format
and not necessarily the new format in which case they would need use the "ip
bgp-community new-format".

And yes, I just tried it in my lab going from a 3640 to a Juniper M10 and I
did not use any Match action, the community then applies to ALL routes being
advertised by the 3640.




Thanks,

Mario Puras
SoluNet Technical Support 


-----Original Message-----
From: jlewis@lewis.org [mailto:jlewis@lewis.org]
Sent: Friday, September 13, 2002 11:49 PM
To: cisco-nsp@puck.nether.net
Subject: [nsp] BGP community issue or provider issue?


I'm having trouble making use of BGP communities with one of my transit
providers.  i.e. I'm setting a community string via a simple route-map,
but they seem to either not receive it or ignore it.

Here's part of the config:

router bgp 6364
 neighbor a.b.c.d remote-as 1239
 neighbor a.b.c.d update-source Serial1/0
 neighbor a.b.c.d version 4
 neighbor a.b.c.d send-community
 neighbor a.b.c.d soft-reconfiguration inbound
 neighbor a.b.c.d distribute-list 190 in
 neighbor a.b.c.d route-map SPRINT-NO-METRIC in
 neighbor a.b.c.d route-map sprint_prepend out
 neighbor a.b.c.d maximum-prefix 150000 90
 neighbor a.b.c.d filter-list 1 out

route-map sprint_prepend permit 10
 set community 65003:6447

>From their NOC, I'm getting the run-around.  First they tried several
times to tell me what I was doing made no sense (though it's copied from
docs on their web site, which I referenced in my emails to them).  Now
they're saying they understand what I'm trying to do, but they're not
receiving any community string because I have no match statement in the
route-map.  I know I don't need one.

I know I don't need one because on another router, with another provider, 
I have:

router bgp 6364
 neighbor e.f.g.h remote-as 701
 neighbor e.f.g.h send-community
 neighbor e.f.g.h version 4
 neighbor e.f.g.h soft-reconfiguration inbound
 neighbor e.f.g.h distribute-list 190 in
 neighbor e.f.g.h route-map UUNET_INPUT in
 neighbor e.f.g.h route-map tell_uu_to_prepend_one out
 neighbor e.f.g.h maximum-prefix 150000 90
 neighbor e.f.g.h filter-list 1 out

route-map tell_uu_to_prepend_one permit 10
 set community 701:1

And funny thing...this one works as it's supposed to.

The working config is a 7513 running IOS in the 12.0S train.
The non-working config is a 7206 running IOS in the 12.1T train.

Is there any chance this is a config issue or IOS issue on my end, or do I 
need to keep banging on this provider's escalate button until I get 
someone who knows what's going on?

----------------------------------------------------------------------
 Jon Lewis *jlewis@lewis.org*|  I route
 System Administrator        |  therefore you are
 Atlantic Net                |  
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________

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