Re: [sip-overload] [dispatch] draft-shen-soc-avalanche-restart-overload
Charles Shen <charles@cs.columbia.edu> Tue, 04 March 2014 20:16 UTC
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From: Charles Shen <charles@cs.columbia.edu>
Date: Wed, 05 Mar 2014 04:15:40 +0800
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Cc: Cullen Jennings <fluffy@cisco.com>, Arata Koike <koike.arata@lab.ntt.co.jp>, "Dale R. Worley" <worley@ariadne.com>, charles@cs.columbia.edu, hgs@cs.columbia.edu
Subject: Re: [sip-overload] [dispatch] draft-shen-soc-avalanche-restart-overload
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Dear all, I'd like to re-send the message below, and would appreciate very much your opinions! Charles On Tue, Feb 18, 2014 at 12:37 AM, Charles Shen <charles@cs.columbia.edu>wrote: > Dear all, > > I am writing about the draft > > A Mechanism for Session Initiation Protocol (SIP) Avalanche Restart > Overload Control > http://datatracker.ietf.org/doc/draft-shen-soc-avalanche-restart-overload/ > > as a result of a discussion on the DISPATCH list suggesting that this > draft may be in-scope of the SOC charter and could benefit from WG review, > I would like to solicitate your kind opinion on whether the WG agrees on > that and is willing to take on it as a possible WG deliverable. > > Some background discussion below for your reference. Thank you very much! > > Charles > > > ---------- Forwarded message ---------- > From: Richard Barnes <rlb@ipv.sx> > Date: Mon, Feb 17, 2014 at 11:14 AM > Subject: Re: [dispatch] draft-shen-soc-avalanche-restart-overload > To: Charles Shen <charles@cs.columbia.edu> > Cc: "Cullen Jennings (fluffy)" <fluffy@cisco.com>, DISPATCH < > dispatch@ietf.org> > > > I agree that the charter could be read to include this document. We > should confirm that the WG agrees, and is willing to take on the document. > > Charles, could you please start a thread on the SOC list? > > Thanks, > --Richard > > > On Mon, Feb 17, 2014 at 11:05 AM, Charles Shen <charles@cs.columbia.edu>wrote: > >> If that is the case, I at least don't see the current charter excluding >> the scope of this work from the sentence "The objective of the working >> group is to develop mechanisms for SIP overload control. The problem >> domain of SIP overload control can be split into overload control >> between a user agent and a SIP server and overload control between SIP >> servers.", as this work fits nicely into the "overload control between a >> user agent and a SIP server" problem domain. >> >> >> >> On Mon, Feb 17, 2014 at 12:48 AM, Cullen Jennings (fluffy) < >> fluffy@cisco.com> wrote: >> >>> >>> So the terminology for this is always a bit confusing. The Milestones >>> are not typically considered part of the charter but if the WG wanted to do >>> this work, they could add a Milestone without changing a charter. The >>> question is does the Charter text cover this type of work. >>> >>> >>> On Feb 17, 2014, at 3:09 AM, Charles Shen <charles@cs.columbia.edu> >>> wrote: >>> >>> > Thanks Cullen for your comments, >>> > >>> > According to my understanding, the current charter description >>> > >>> > http://datatracker.ietf.org/wg/soc/charter/ >>> > >>> > does not seem to cover the goal of advancing this draft into a working >>> group deliverable. Please correct me if I were wrong. >>> > >>> > Thanks >>> > >>> > Charles >>> > >>> > >>> > >>> > >>> > On Sat, Feb 15, 2014 at 6:35 PM, Cullen Jennings (fluffy) < >>> fluffy@cisco.com> wrote: >>> > >>> > This seems like a draft that could benefit from review in a WG. Can >>> someone fill in a bit of the background of this draft in SOC. I’m not >>> seeing why the SOC charter would need to be changed to do this work. >>> > >>> > >>> > >>> > On Feb 11, 2014, at 1:35 PM, Charles Shen <charles@cs.columbia.edu> >>> wrote: >>> > >>> > > Dear all: >>> > > >>> > > As advised by Richard Barnes, I am writing to seek opinion from you >>> about this draft: >>> > > >>> > > >>> http://datatracker.ietf.org/doc/draft-shen-soc-avalanche-restart-overload/ >>> > > A Mechanism for Session Initiation Protocol (SIP) Avalanche Restart >>> Overload Control >>> > > >>> > > Abstract: >>> > > When a large number of clients register with a SIP registrar >>> server >>> > > at approximately the same time, the server may become overloaded. >>> > > Near-simultaneous floods of SIP SUBSCRIBE and PUBLISH requests may >>> > > have similar effects. Such request avalanches can occur, for >>> > > example, after a power failure and recovery in a metropolitan >>> area. >>> > > This document describes how to avoid such overload situations. >>> Under >>> > > this mechanism, a server estimates an avalanche restart backoff >>> > > interval during its normal operation and conveys this interval to >>> its >>> > > clients through a new Restart-Timer header in normal response >>> > > messages. Once an avalanche restart actually occurs, the clients >>> > > perform backoff based on the previously received Restart-Timer >>> header >>> > > value before sending out the first request attempt. Thus, the >>> > > mechanism spreads all the initial client requests and prevents >>> them >>> > > from overloading the server. >>> > > >>> > > The draft has been presented and discussed in IETF meetings since >>> 2010, and generated interest among the community: >>> > > >>> > > >>> https://encrypted.google.com/search?as_q=draft-shen-soc-avalanche-restart-overload&as_sitesearch=www.ietf.org%2Fmail-archive%2Fweb%2F >>> > > >>> > > I am looking for your kind opinion on what should be the appropriate >>> next step for this document: >>> > > >>> > > -- Should this draft be dispatched to SOC (and their charter >>> amended)? >>> > > -- Should this draft be processed as AD-sponsored? >>> > > -- Should this draft be killed (if it is harmful)? >>> > > >>> > > Thank you very much. >>> > > >>> > > Charles >>> > > >>> > > >>> > > >>> > > _______________________________________________ >>> > > dispatch mailing list >>> > > dispatch@ietf.org >>> > > https://www.ietf.org/mailman/listinfo/dispatch >>> > >>> > >>> >> >> _______________________________________________ >> dispatch mailing list >> dispatch@ietf.org >> https://www.ietf.org/mailman/listinfo/dispatch >> >> > >
- Re: [sip-overload] draft-shen-soc-avalanche-resta… Paul Kyzivat
- Re: [sip-overload] draft-shen-soc-avalanche-resta… Charles Shen
- [sip-overload] Fwd: draft-shen-soc-avalanche-rest… Charles Shen
- [sip-overload] Fwd: [dispatch] draft-shen-soc-ava… Charles Shen
- Re: [sip-overload] [dispatch] draft-shen-soc-aval… Charles Shen
- Re: [sip-overload] [dispatch] draft-shen-soc-aval… Dale R. Worley