RE: Sequence of operation in BGP

Jules,

Could you share your configs, this looks weired behavior that you are not
able to see the community using normal ( neighbor x.x.x.x route-map
COMMUNITY) command.

Thanks,

Gopal

From: jules NYA BAWEU [mailto:nyabaweu_at_gmail.com]
Sent: Friday, February 18, 2011 10:53 PM
To: gopal gupta
Cc: ccielab_at_groupstudy.com
Subject: Re: Sequence of operation in BGP

Thanks again Gopal,

it all started when I ran into a task where I was setting community in a
route-map (regular route-map applied to BGP neighbor) for prefixes sent to a
BGP speaker; I could never see that community going through or being set. I
then move the community into the route-map that was used for the
unsuppress-map for the same neighbor and everything was fine. That was
actually when I found out that never bother to check the sequence of
operations for all those "things" that you can apply to your BGP peer...
That's where I'm coming from.

On Fri, Feb 18, 2011 at 8:39 PM, gopal gupta <gopgupta_at_cisco.com> wrote:

You are welcome Jules, Let me know what exactly are you trying..I tested
this scenario once last month..It pretty much worked like that as mentioned
by Brian dennis on that link.

You should remember one thing that Output of the First one that is the most
preferred would become the input of second one and in turn the Output of the
second would become the input of the Final one i.e. third one.

From: jules NYA BAWEU [mailto:nyabaweu_at_gmail.com]
Sent: Friday, February 18, 2011 10:32 PM
To: gopal gupta
Cc: ccielab_at_groupstudy.com
Subject: Re: Sequence of operation in BGP

Thank you Gopal.

I did run into that link earlier; I actually tested some few scenarios, but
still have some gray areas...

On Thu, Feb 17, 2011 at 2:16 PM, gopal gupta <gopgupta_at_cisco.com> wrote:

Chk this..

http://blog.ine.com/2008/01/11/bgp-order-of-preference/#comments

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
jules NYA BAWEU
Sent: Thursday, February 17, 2011 3:52 PM
To: ccielab_at_groupstudy.com
Subject: Sequence of operation in BGP

Hello All:

Could you, please, clarify those for me? I did some quick search but
couldn't get a firm answer?

With BGP, could you tell me the sequence of operations the following are
applied for inbound/outbound routing info?

1 - suppress/ussupress map and attibute-map while using the aggregate
command

2- ussupress-map, route-map, filter-list and prefix-list/distribute-list (I
know we cannot use "neighbor prefix-list" and "neighbor distribute-list" in
the same direction - I'm looking more to the order for each as it pertains
to the previously mentioned)

Thanks in advance

Blogs and organic groups at http://www.ccie.net
Received on Fri Feb 18 2011 - 23:53:40 ART