Re: [ssm] wg last call for draft-ietf-ssm-arch-03 complete
hoerdt@clarinet.u-strasbg.fr Fri, 17 October 2003 07:31 UTC
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From: hoerdt@clarinet.u-strasbg.fr
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Date: Fri, 17 Oct 2003 09:30:52 +0200
To: Pekka Savola <pekkas@netcore.fi>
cc: Hugh Holbrook <holbrook@cisco.com>, ssm@ietf.org, supratik@sprintlabs.com
Subject: Re: [ssm] wg last call for draft-ietf-ssm-arch-03 complete
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And a second thing I think is the implementation of SSM, which is a subset of ASM in the architecture view (PIM-SSM is a subset of PIM-SM). How will they prevent people to use the 232/8 address space ? quite crasy to imagine it, will they buy the address space which is supposed to belong to each local machine ? Why do they not claim that ASM contains a subset of technology wich is already patented by Apple ? IGMPv3 technology was here already in 1992.. and PIM-SM in 1994, so we can surely say that SSM was already there, but not implemented before the patents. One can use ASM to do SSM and this is already the case for TV-like applications, is this patentable ? Hoerdt Mickaël LSIIT-Strasbourg On Fri, 17 Oct 2003 hoerdt@clarinet.u-strasbg.fr wrote: > I have read the patent (very fast), and as the title seems to be > impressive, the described technology is not really related to SSM in my > opinion. One thing that we could do is to note the differences between > SSM and this patent. What I have notivec after a first fast reading : > > - Apple propose to use another layer for Multicast, not SSM. > - Apple propose to use a network number embedded in the Multicast address, > not SSM. > - Apple propose a scheme to allocate multicast addresses on the local > network (because it use a network number), not SSM. > > I am pretty sure that there are other differences. Theses differences > are important, enough important to make an apple "SSM" implementation not > compatible with the SSM architecture described in the drafts, is this > enough to say that the patent is irrelevant ? > > Hoerdt Mickaël > LSIIT-Strasbourg > > On Fri, 17 Oct 2003, Pekka Savola wrote: > > > On Mon, 13 Oct 2003, Hugh Holbrook wrote: > > [...] > > > The only unclosed discussion regarding this draft surrounds the > > > intellectual property rights statement posted to the IETF web site > > > back in March (reproduced below). There was some brief discussion of > > > it on the mailing list back in April, but we didn't really close the > > > topic, and so I'd like to bring it up again. So, with this IPR > > > statement in mind, let me now ask anyone who has opinions on the topic > > > of whether to advance draft-ietf-ssm-arch-04.txt to Proposed Standard > > > to speak up. > > [...] > > > > I think I've said this before, but as nobody else seems to want to throw > > the first rock, let me do it.. :-) > > > > I don't think we can advance SSM unless we get a guarantee of RF licensing > > or get a reasonably sure feeling that SSM implementations would not > > infringe the patent in question. > > > > SSM is targeted as *way* too fundamental piece of technology, and locking > > out those who are unable to do non-RF licensing (e.g. different open > > source communities) is simply unacceptable. > > > > -- > > Pekka Savola "You each name yourselves king, yet the > > Netcore Oy kingdom bleeds." > > Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings > > > > > > _______________________________________________ > > ssm mailing list > > ssm@ietf.org > > https://www1.ietf.org/mailman/listinfo/ssm > > > > _______________________________________________ > ssm mailing list > ssm@ietf.org > https://www1.ietf.org/mailman/listinfo/ssm > _______________________________________________ ssm mailing list ssm@ietf.org https://www1.ietf.org/mailman/listinfo/ssm
- [ssm] short last call (again) for draft-ietf-ssm-… Hugh Holbrook
- [ssm] wg last call for draft-ietf-ssm-arch-03 com… Hugh Holbrook
- Re: [ssm] wg last call for draft-ietf-ssm-arch-03… Pekka Savola
- Re: [ssm] wg last call for draft-ietf-ssm-arch-03… hoerdt
- Re: [ssm] wg last call for draft-ietf-ssm-arch-03… hoerdt
- Re: [ssm] wg last call for draft-ietf-ssm-arch-03… Lorenzo Vicisano
- Re: [ssm] wg last call for draft-ietf-ssm-arch-03… Pekka Savola
- Re: [ssm] wg last call for draft-ietf-ssm-arch-03… Marshall Eubanks
- Re: [ssm] wg last call for draft-ietf-ssm-arch-03… Marshall Eubanks
- Re: Re: [ssm] wg last call for draft-ietf-ssm-arc… Hugh Holbrook