Re: Review of draft-mohali-dispatch-cause-for-service-number-12
"Joel M. Halpern" <jmh@joelhalpern.com> Fri, 16 December 2016 04:35 UTC
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Subject: Re: Review of draft-mohali-dispatch-cause-for-service-number-12
To: Ben Campbell <ben@nostrum.com>, Joel Halpern <jmh@joelhalpern.com>
References: <148186064804.24550.3460112022117949321.idtracker@ietfa.amsl.com> <9E288F8F-BD52-49D0-83B2-472F1B223127@nostrum.com>
From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Date: Thu, 15 Dec 2016 23:35:33 -0500
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I see your point about this adding a value to the entry created by RFC 4458. Is there a reason this can not simply be PS? The fact that 4458 is Informational does not, as far as I can tell, justify continuing the error. While this is for a 3GPP usage, it appears to have been reviewed by the Dispatch WG sufficiently to justify PS. One could argue that there is a down-ref issue, but the fact that the field is in a standards-track required registry would seem to make that a moot point. Yours, Joel PS: It would seem that WG discussion of that sort is something we would like to see in Shepherd writeups. On 12/15/16 11:28 PM, Ben Campbell wrote: > Hi Joel, > > Thanks for the comments. There has been a fair amount of discussion > about the status of the draft. The situation is clearly not optimal, and > I welcome input on how to straighten it out. > > The rational so far has been that this draft updates RFC 4588, which is > informational. It adds some additional values and related semantics for > the "cause" parameter from 4588. It does not register new parameters; > rather it adds itself as a reference in the existing "cause" > registration. This is mainly a courtesy to readers. (There is no > sub-registry for "cause" parameter values.) We might could get by > without that change, since in a perfect world people following the IANA > reference to 4588 would notice the "Updated by..." tag. > > The gotcha is that RFC 4588 would not be possible as an informational > today; it would not have standing to register the "cause" parameter. But > at the time it was published, there was a lack of clarity around the > "standards action" policy for the SIP URI parameters registry. Making > the new values from _this_ draft standards track, when the parameter > itself is not, doesn't seem appropriate. We had some discussion about > whether we should promote 4588 to PS, but there was not consensus to do > so when it was published, and I don't see reason to expect that to have > changed. > > This draft is primarily intended to meet a need in 3GPP, where I > understand they are effectively already doing this. Would it help to > more tightly scope this as "Here's something 3GPP is doing..." rather > than as a general mechanism? > > Thanks! > > Ben. > > On 15 Dec 2016, at 21:57, Joel Halpern wrote: > >> Reviewer: Joel Halpern >> Review result: Ready with Issues >> >> Major: >> This document defines a new code for use in SIP, and specifies new >> behavior both for the code itself and for its use in history-info. I >> am thus confused as to how this can be an informational RFC. It looks >> like it either Proposed Standard or experimental. Yes, I see that RFC >> 4458, which this updates is Informational. But just because we did it >> wrong before does not make that behavior correct now. In addition to >> my understanding of the roles of different RFCs, I note that RFC 3969 >> and the IANA registry both state that this assignment must be made by >> a standards track RFC. >> >> Minor: >> Given our emphasis on IPv6 over IPv4, would it not make sense for >> the examples to use IPv6 addresses? (Inspired by the Id-Nits alert.)
- Review of draft-mohali-dispatch-cause-for-service… Joel Halpern
- Re: Review of draft-mohali-dispatch-cause-for-ser… Ben Campbell
- Re: Review of draft-mohali-dispatch-cause-for-ser… Joel M. Halpern
- Re: Review of draft-mohali-dispatch-cause-for-ser… Ben Campbell
- Re: Review of draft-mohali-dispatch-cause-for-ser… Joel M. Halpern
- Re: Review of draft-mohali-dispatch-cause-for-ser… Cullen Jennings
- RE: Review of draft-mohali-dispatch-cause-for-ser… marianne.mohali
- Re: Review of draft-mohali-dispatch-cause-for-ser… Mary Barnes
- Re: Review of draft-mohali-dispatch-cause-for-ser… Ben Campbell
- Re: Review of draft-mohali-dispatch-cause-for-ser… Ben Campbell
- Re: [dispatch] Review of draft-mohali-dispatch-ca… Adam Roach
- Re: [dispatch] Review of draft-mohali-dispatch-ca… Ben Campbell
- Re: [dispatch] Review of draft-mohali-dispatch-ca… Robert Sparks
- Re: [dispatch] Review of draft-mohali-dispatch-ca… Ben Campbell
- Re: [dispatch] Review of draft-mohali-dispatch-ca… Cullen Jennings (fluffy)
- RE: Review of draft-mohali-dispatch-cause-for-ser… marianne.mohali
- Re: Review of draft-mohali-dispatch-cause-for-ser… Ben Campbell