[p2p-sip] Revised concepts draft

[bryan at ethernot.org (David A. Bryan)]

I think I'd have to differ a bit here. I think the use cases draft is
still quite valuable, and should be expanded going forward, possibly
with some context about which cases are being addressed by the current
scoped work and by combining with the requirements document as I
mention below.

The architecture draft you mention (which I actually think should be
considered more of a proposed design or solution than a generic
architecture draft) is a good bit more about details of a particular
vision of how to put something together than details of how things
P2PSIP would be used. (in that way, I view it as very much like the
non-normative parts of my p2p registration draft) My thought is that
the use cases (and possibly the requirements
draft-baset-sipping-p2preq-00) drafts that are out there should be
about what people would like to do with P2PSIP, and the concepts and
terminology document can be more about where we are going and the
architecture.

Since there is already a good bit of architecture work in that
document, and architecture that reflects discussion of a larger group
(Dean, Philip and myself, obviously, but many others through
discussion), I'd argue expanding the architecture work in that
document would be the best way to move toward a new architecture
draft, rather than merging it with earlier work. I would then suggest
combining the existing use cases and requirements into one draft. The
new architecture can of course combine elements of the particular
solution proposed in shim-sipping-p2p-arch, as I would hope it would
from other proposed approaches so far such as my own
draft-bryan-sipping-p2p, but I think that we have made lots of headway
on the work and architecture in draft-willis-p2psip-concepts being
accepted by many parties, particularly in our discussions at the last
ad-hoc, and would like to see that used as the foundation going
forward, rather than merging in older (and more contentious) work.

David

I

On 8/21/06, Eunsoo Shim <eunsoo at research.panasonic.com> wrote:
> I think we need to think about what we look for from documenting use cases.
>
> In my understanding, the current use case draft focuses on listing all
> possible (and significant) use cases of P2P SIP. It was an effort to
> convince people of importance and usefulness of P2P SIP in a sense. I
> think documenting them has some value at least for a while.
> Another motivation for the draft was to help in identifying the use
> cases the group should/want to focus on. I am not sure whether this is
> critical any more considering that the group made a significant progress
> in defining the work items for the initial charter. I wonder what other
> people think about this.
>
> Since we introduced many new terms in the terminology and concept draft,
> there arised a need for illustration of the terms, in particular, the
> roles of the architectural components. However, an illustration of the
> role of particular architectural component like the P2PSIP Overlay Peer
> Protocol does not have to depend on details of specific use cases. For
> example, it does not require to say whether it is used in a corporate
> network environment or in the global Internet scale. So I am not sure we
> need to integrate the current use case draft and the terminology and
> concept draft.
>
> What we need is general illusrations of the roles of the architectural
> components in example architectures. Fortunately there is already a
> draft doing it, even though using different terms. The architecture
> described in draft-shim-sipping-p2p-arch-00.txt is almost the same as or
> at least very close to the concepts in the terminology and concept
> draft. The architecture draft is already being revised to use the same
> terms defined in the terminology and concept draft.
>
> We might want to keep the terminology and concept draft as a collection
> of the terms and basic concepts with their concise definitions so that
> it can be referred to in most (possibly all) P2P SIP related drafts. And
> we can collect architecture illustrations in the architecture draft,
> possibly listing some architecture variations. Some stuff like a data
> format for user location can be removed from the architecture draft.
>
> The final details of what a particular component MAY/SHOULD/MUST do and
> not do will be described in the protocol specification drafts.
> Eventually people will come up with lots of creative use cases and
> architecture variations we don't think of now.
>
> My 2 cents.
> Thanks.
>
> Eunsoo
> Scott W Brim wrote:
>
> >On 08/21/2006 10:36 AM, Dean Willis allegedly wrote:
> >
> >
> >>I'm amenable, but it is possible that the group might think we should
> >>revise the use cases draft using the language of the concepts and
> >>terminology draft rather than putting use cases into the concepts and
> >>terminology draft.
> >>
> >>What is the "happy medium" here, folks?
> >>
> >>
> >
> >Concepts and terminology make it possible to talk about use cases and
> >have some confidence that we agree on what they actually mean.  Use
> >cases clarify the scope and test the C&T to make sure they are useful
> >when applied to the real world.  In general for most WGs I think these
> >two should be together in one draft (call it a "framework").  You're
> >going to be iterating back and forth anyway, since each depends on and
> >supports the other.  I think we should try the experiment of putting
> >them all in one draft.  If it turns out to be more confusing than
> >having them separate, we can easily separate them again.
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> >
> >
>
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