> From: heasley [mailto:[email protected]] > Sent: Thursday, June 29, 2017 > 8:28 PM > > Tue, Jun 27, 2017 at 01:14:34PM +0000, [email protected]: > > > > > > > From: heasley [mailto:[email protected]] > Sent: Monday, June 26, > > 2017 7:07 PM > > > To: DECRAENE Bruno IMT/OLN > > > Cc: [email protected] > > > Subject: Re: [GROW] draft-ietf-grow-bgp-gshut > > > > > > Mon, Jun 26, 2017 at 01:57:54PM +0000, [email protected]: > > > > > Suggestions: > > > > > > > > > > OLD Abstract: > > > > > This draft describes operational procedures aimed at reducing > > the > > > > > amount of traffic lost during planned maintenances of routers or > > > > > links, involving the shutdown of BGP peering sessions. > > > > > NEW Abstract: > > > > > This draft describes operational procedures aimed at reducing > > the > > > > > amount of traffic lost during planned maintenances of routers or > > > > > links, involving the shutdown of BGP peering sessions. > > Additionally > > > > > this document describes the use of a well-known Border Gateway > > > > > Protocol (BGP) community to signal that a graceful shutdown has > > been > > > > > initiated for the tagged prefix. > > > > > > > > [Bruno] OK. Slightly reworded as "It defines a well-known BGP > > community, called > gshut, to > > > signal the graceful shutdown of paths to other Autonomous Systems." > > > > > > s/paths to other Autonomous Systems./a path in the presence of other > > paths./ > > > > > > ie: it does nothing when there is no other path and it may not move to > > > anoter AS, just to another path. it is per-session, not per-AS. > > > > My sentence was misleading. Changing to: "It defines a well-known BGP > > community, > called g-shut, to signal over the EBGP session to be shutdown, the graceful > shutdown of > paths." > > As Jakob mentioned, its not ebgp-only, as it also addresses shutting an > ibgp or an entire speaker.
The procedure is not limited to ebgp. However the BGP community is defined in order to perform the signaling specifically over EBGP. Over IBGP, we use LOCAL_PREF to lower the preference of the route. Even if the community may be kept for information. Thanks, Regards, --Bruno _________________________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. This message and its attachments may contain confidential or privileged information that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and delete this message and its attachments. As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified. Thank you. _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow
