"E.B. Dreger" wrote:
Date: Sun, 22 Sep 2002 23:16:20 -0400 (EDT) From: jlewis
Speaking of special...having played around a little with the BGP communities supported by C&W and Sprint, I'm wondering which other big transit providers (it seems almost a waste to say Tier 1 anymore) support community strings that will let you (the customer) cause them to selectively prepend route announcements to their peers.
1239, 3356, 3549, 3561
Other than that, I don't know of any positives. I was going to compile a list and make a webpage... but I've had underwhelming response to past posts on the subject.
There is an ongoing effort with IETF to define a special type of extended communities to support this type of interdomain traffic engineering in a standardize manner within the ptomaine working group. See http://www.ietf.org/html.charters/ptomaine-charter.html Those redistribution communities have been implemented in zebra http://www.infonet.fundp.ac.be/doc/tr/Infonet-TR-2002-03.html There is also a detailed survey of the utilization of communities that might be of interest http://www.infonet.fundp.ac.be/doc/tr/Infonet-TR-2002-02.html Best regards, Olivier Bonaventure