Hi Donald, I do not think this proposal changes BGP state machine. It does not affect connection state as such. It just de-preferes routes during normal best path selection runs.
If it changes in any way it just delays the actual shutdown of the connection which one may consider the operator's choice. Note that what the draft is trying to automate and make easier operationally is possible to do manually today with existing BGP state machine therefor this seems like an argument that no changes to BGP state machine is required. Rgs, R. On Mon, Oct 22, 2012 at 11:04 PM, Smith, Donald <[email protected]> wrote: > Where are the "Changes to BGP Finite State Machine" listed? > BGP is supposed to be a Finite State Machine. Most early BGP rfcs called out > the changes specifically. > At least up to rfc4724 (Graceful Restart). > > This one CLEARLY changes the finite state machine but doesn't clearly state > what those changes are. > Many others have done the same thing it is nearly impossible to map out how > all those new rfcs have affected the state machine. > > > > > "Pampers use multiple layers of protection to prevent leakage. Rommel used > defense in depth to defend European fortresses." (A.White) > [email protected] > > >>-----Original Message----- >>From: [email protected] [mailto:[email protected]] On Behalf Of >>[email protected] >>Sent: Monday, October 22, 2012 3:17 AM >>To: [email protected] >>Cc: [email protected] >>Subject: [GROW] I-D Action: draft-ietf-grow-bgp-gshut-04.txt >> >> >>A New Internet-Draft is available from the on-line Internet-Drafts >>directories. >> This draft is a work item of the Global Routing Operations Working >>Group of the IETF. >> >> Title : Graceful BGP session shutdown >> Author(s) : Pierre Francois >> Bruno Decraene >> Cristel Pelsser >> Keyur Patel >> Clarence Filsfils >> Filename : draft-ietf-grow-bgp-gshut-04.txt >> Pages : 12 >> Date : 2012-10-22 >> >>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. >> >> >>The IETF datatracker status page for this draft is: >>https://datatracker.ietf.org/doc/draft-ietf-grow-bgp-gshut >> >>There's also a htmlized version available at: >>http://tools.ietf.org/html/draft-ietf-grow-bgp-gshut-04 >> >>A diff from the previous version is available at: >>http://www.ietf.org/rfcdiff?url2=draft-ietf-grow-bgp-gshut-04 >> >> >>Internet-Drafts are also available by anonymous FTP at: >>ftp://ftp.ietf.org/internet-drafts/ >> >>_______________________________________________ >>GROW mailing list >>[email protected] >>https://www.ietf.org/mailman/listinfo/grow > _______________________________________________ > GROW mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/grow _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow
