Hi all, Please find below a requirement draft from some service providers for the graceful shutdown of BGP sessions.
In short, when a service provider needs to shutdown BGP sessions for maintenance purposes, BGP behaves as if a failure occurred. During the subsequent BGP convergence, customers' traffic may be lost. As this is a planned operation, one would prefer some kind of a make before break behavior. For example, in the case of an eBGP session maintenance, it is desired to have both ASes involved in the eBGP session re-route the traffic on their backup path before withdrawing the nominal path. We would appreciate your feedback on this requirement. Regards, Cristel, Pierre, Zubair, Antonio, Bruno -----Message d'origine----- De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la part de [EMAIL PROTECTED] Envoyé : vendredi 22 février 2008 01:30 À : [EMAIL PROTECTED] Objet : I-D ACTION:draft-decraene-bgp-graceful-shutdown-requirements-00.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Requirements for the graceful shutdown of BGP sessions Author(s) : B. Decraene, P. Francois, c. pelsser, Z. Ahmad, A. Armengol Filename : draft-decraene-bgp-graceful-shutdown-requirements-00.txt Pages : 15 Date : 2008-2-18 The BGP protocol is heavily used in Service Provider networks both for Internet and BGP/MPLS VPN services. For resiliency purposes, redundant routers and BGP sessions can be deployed to reduce the consequences of an AS Border Router or BGP session breakdown on customers' or peers' traffic. However simply taking down a BGP session for maintenance purposes may still induce connectivity losses during the BGP convergence. This is no more satisfactory for new applications (e.g. voice over IP, on line gaming, VPN). Therefore, a solution is required for the graceful shutdown of a (set of) BGP Requirements for the graceful shutdown of BGP sessions session(s) in order to limit the amount of traffic loss during a planned shutdown. This document expresses requirements for such a solution. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-decraene-bgp-graceful-shutdown-requirements-00.txt To remove yourself from the I-D Announcement list, send a message to [EMAIL PROTECTED] with the word unsubscribe in the body of the message. You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce to change your subscription settings. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-decraene-bgp-graceful-shutdown-requirements-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt _______________________________________________ GROW mailing list GROW@ietf.org https://www.ietf.org/mailman/listinfo/grow
