RE: [dhcwg] Re: dhcpv6-22 DUID/VUID questions/comments
Jim Bound <seamus@bit-net.com> Mon, 21 January 2002 01:23 UTC
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Date: Sun, 20 Jan 2002 20:15:53 -0500
From: Jim Bound <seamus@bit-net.com>
To: "Bernie Volz (EUD)" <Bernie.Volz@am1.ericsson.se>
Cc: Michael Johnston <frenchy@quiet-like-a-panther.org>, dhcwg <dhcwg@ietf.org>
Subject: RE: [dhcwg] Re: dhcpv6-22 DUID/VUID questions/comments
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Bernie, This is a good idea I think. /jim On Sun, 20 Jan 2002, Bernie Volz (EUD) wrote: > What about considering a variable length field for this type and adding a 16-bit length to allow the length to be specified? That way, a vendor can use what they like. The server treats it as opaque anyway. > > So, in 11.3 we could change it to be: > > 0 1 2 3 > 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > | VUID length (in bits) | VUID (variable length) | > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > . . > . VUID (variable length) | > . . > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > . . > . domain name (variable length) . > . . > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > > VUID length is the number of bits of the VUID. > > VUID is the VUID (of (VUID length + 7)/8 bytes). > > - Bernie > > -----Original Message----- > From: Jim Bound [mailto:seamus@bit-net.com] > Sent: Sunday, January 20, 2002 12:52 PM > To: Michael Johnston > Cc: Bernie Volz (EUD); dhcwg > Subject: Re: [dhcwg] Re: dhcpv6-22 DUID/VUID questions/comments > > > Infiniband spec uses 128 bit global UIDs too. I think it makes sense to > have a 128bit option but keep the 64bit too. If we can just add it as > another option which I think we can. But we don't want to hold up the > spec either. > > > /jim > > > On Sun, 20 Jan 2002, Michael Johnston wrote: > > > Bernie, > > > > Intel-ish systems are what I use the most, so my information is skewed in > > that direction. > > > > The UUIDs being used today are derived from the algorithm in this document: > > http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt > > > > Mechanisms for retrieving (and in many cases storing) the platform UUID from > > (to) non-volatile storage are included in (or with) most x86PC compatible > > laptop and desktop systems and all Intel Itanium workstations and servers. > > > > In order to get Microsoft WHQL or Intel WfM certification all systems with > > network boot support must contain or generate a valid platform UUID. > > > > EFI (Extensible Firmware Interface) also requires a platform UUID. > > > > > > %%michael > > > > > > Bernie Volz (EUD) writes: > > > > > Hi: > > > > > > If there is good evidence that a 128-bit identifier makes much more sense than using the 64-bit identifier currently defined for type 2 (section 11.3), perhaps we should just use the 128-bits (a vendor that only has 64-bit identifier, could simply use 0's in the rest of the bits). > > > > > > Do you or does anyone else have some good information about the what new systems are using for UUIDs? > > > > > > - Bernie Volz > > > > > > -----Original Message----- > > > From: Michael Johnston [mailto:frenchy@quiet-like-a-panther.org] > > > Sent: Saturday, January 19, 2002 3:00 PM > > > To: dhcwg > > > Subject: [dhcwg] dhcpv6-22 DUID/VUID questions/comments > > > > > > > > > Gentles, > > > > > > For the DUID contents definition (Section 11): > > > > > > Would you be adverse to expanding the size of the VUID to 128 bits or > > > creating an additional type (4) for a 128 bit UUID? > > > > > > Reasoning: > > > > > > According to the dhcpv6-22 draft, "... the DUID used by a client SHOULD NOT > > > change over time...". From what I have seen, most new laptops, desktops & > > > workstations (especially those that come with network installed) already > > > contain, or have space reserved for, a 128 bit UUID that is intended to be > > > used to manage/track the system identity. Why have a vendor or IT assign > > > yet another ID number to the system. > > > > > > Using the link-layer address is also not a unique solution. Consider the > > > two cases of (1) laptops connecting to docking stations that contain network > > > adapters and (2) replacing defective or upgrading to new network adapters. > > > > > > > > > %%michael > > > > > > _______________________________________________ > > > dhcwg mailing list > > > dhcwg@ietf.org > > > https://www1.ietf.org/mailman/listinfo/dhcwg > > > > > > _______________________________________________ > > dhcwg mailing list > > dhcwg@ietf.org > > https://www1.ietf.org/mailman/listinfo/dhcwg > > > _______________________________________________ dhcwg mailing list dhcwg@ietf.org https://www1.ietf.org/mailman/listinfo/dhcwg
- [dhcwg] dhcpv6-22 DUID/VUID questions/comments Michael Johnston
- RE: [dhcwg] dhcpv6-22 DUID/VUID questions/comments Bernie Volz (EUD)
- [dhcwg] Re: dhcpv6-22 DUID/VUID questions/comments Michael Johnston
- Re: [dhcwg] Re: dhcpv6-22 DUID/VUID questions/com… Jim Bound
- RE: [dhcwg] Re: dhcpv6-22 DUID/VUID questions/com… Bernie Volz (EUD)
- [dhcwg] Re: dhcpv6-22 DUID/VUID questions/comments Michael Johnston
- RE: [dhcwg] Re: dhcpv6-22 DUID/VUID questions/com… Jim Bound