Re: [DMM] Review of draft-ietf-dmm-4283mnids-04
Charlie Perkins <charles.perkins@earthlink.net> Thu, 16 February 2017 00:12 UTC
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To: "Dale R. Worley" <worley@ariadne.com>
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From: Charlie Perkins <charles.perkins@earthlink.net>
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Date: Wed, 15 Feb 2017 16:12:04 -0800
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Cc: gen-art@ietf.org, ietf@ietf.org, draft-ietf-dmm-4283mnids.all@ietf.org, dmm@ietf.org
Subject: Re: [DMM] Review of draft-ietf-dmm-4283mnids-04
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Hello Dale, O.K. I will take a crack at making this reorganization. If you have text of course that will be appreciated. Right now I don't see why anyone in the WG would object, but I hope at least some people will take a look. I can have the revised draft ready in a few days. I think this resolves the last point of discussion that has been raised about the draft. Regards, Charlie P. On 2/14/2017 5:04 PM, Dale R. Worley wrote: > Charlie Perkins <charles.perkins@earthlink.net> writes: >> I am hesitant to replace so many MNID types by a single URN type with >> substructure. What would you think about replacing the existing >> RFID-*-URI types with a single URN type, but leaving the existing binary >> types? This gets the benefit you suggest for future extensibility, but >> retains the shorter forms that may often be advantageous. > Suddenly today I realized something I should have realized in the > review, which would have saved us much time in discussion. Viz., > consider this proposal: > > - one MNID type for *all* the EPC binary schemes > > - one MNID type for *all* URNs, *including* the EPC URI forms > > This would work, since (1) (not surprisingly) the EPC binary schemes are > all differentiated by their first 8 bits. (see table on page 19 of the > tag-data standard, > http://www.gs1.org/gsmp/kc/epcglobal/tds/tds_1_1_rev_1_27-standard-20050510.pdf) > and (2) all URNs are differentiated by their namespace part. > > (This parallels using one MNID number for all DUID types, since DUIDs > have an internal indicator for the four types.) > > This approach has all the desirable properties anyone has mentioned so > far: > > - includes all EPC binary and URI forms > - automatically includes all existing and future EPC binary forms > - automatically includes all existing and future URN forms *including* > all existing and future EPC URI forms > - doesn't have a proliferation of MNID type numbers which duplicate > information that can be fairly easily extracted from the > identifier itself > - includes all the short EPC forms, allowing brevity when that is > desirable > > This seems to be practical, simple, and almost as elegant as possible. > What do you think? > >> I changed the text as follows: >> >>> Some MNIDs contain sensitive identifiers which, as used in protocols >>> specified by other SDOs, are only used for signaling during initial >>> network entry. In such protocols, subsequent exchanges then rely on >>> a temporary identifier allocated during the initial network entry. >>> Managing the association between long-lived and temporary identifiers >>> is outside the scope of this document. >> I can't remember exactly why this text was added - it was a long time >> ago. But anyway the main point is to simply mention that there may be >> associations between some of the MNID types that might be important from >> a security standpoint, without meaning to go into examples. > Certainly the new text is clear enough. > > Dale >
- [DMM] Review of draft-ietf-dmm-4283mnids-04 Dale Worley
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Sri Gundavelli (sgundave)
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Charlie Perkins
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Suresh Krishnan
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Charlie Perkins
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Suresh Krishnan
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Charlie Perkins
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Sri Gundavelli (sgundave)
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Dale R. Worley
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Dale R. Worley
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Charlie Perkins
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Dale R. Worley
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Sri Gundavelli (sgundave)
- Re: [DMM] Review of draft-ietf-dmm-4283mnids-04 Charlie Perkins
- Re: [DMM] [Gen-art] Review of draft-ietf-dmm-4283… Jari Arkko