Re: Route Aggregation

Paul Traina <pst@cisco.com> Wed, 24 May 1995 18:16 UTC

Message-Id: <199505241740.AA64859@interlock.ans.net>
To: Radha Gowda <rxg@joplin.proteon.com>
Cc: bgp@ans.net
Subject: Re: Route Aggregation
In-Reply-To: Your message of "Wed, 24 May 1995 10:43:09 EDT." <199505241443.AA33468@interlock.ans.net>
Date: Wed, 24 May 1995 10:40:28 -0700
Sender: ietf-archive-request@IETF.CNRI.Reston.VA.US
From: Paul Traina <pst@cisco.com>

  From: Radha Gowda <rxg@joplin.proteon.com>
  Subject: Route Aggregation
  Can anybody tell me if my understanding of the AS_PATH aggregation
  rules are correct?

  1. The following two AS paths need to be aggregated by say AS 1.

  	(AS-5)
    [SEQ  #1  0005]                (AS-1)
                      ==>  [SEQ #1 0001] [SET #2 0003  0005]
    [SEQ  #1  0003] 
  	(AS-3)

yes

  2. 

    [SEQ  #3  0002  0005  0004] 
                               ==> [SEQ #3 0001 0004 0002] [SET #2 0003  0005]
    [SEQ  #3  0002  0003  0004] 

no

				1 2 { 3 4 5 }

is the best you can do.
				1 { 2 3 4 5 }

is also acceptable.

You should not do what you wrote since 4 is out of order.

Route Aggregation Radha Gowda
Re: Route Aggregation John Krawczyk
Re: Route Aggregation Paul Traina