Draft:  draft-ietf-sipping-presence-scaling-requirements-01
Reviewer: Vijay K. Gurbani
Review Date: Sept-03-2008
Review Deadline: Sept-03-2008
Status: WGLC

Review summary: This draft is basically ready for publication, but has nits that should be fixed before publication.

I had reviewed -00 version of this draft (thread archived at http://www.ietf.org/mail-archive/web/sipping/current/msg15465.html).

-01 version addresses a majority of comments in -00.  The ones below are pertinent to -01.

- REQ-009: I still do not like the vague "tens of millions of concurrent users" (the reasons for this are in -00.)  It may be better to rephrase this sentence thus:

   The solution MUST be scalable (note: we view scalability on
   the order of tens of millions of users instead of tens of
   thousands.)

- REQ-010: The suggested rewrite is better than the text in -00.
Some nits on the new text:
   s/will be coming from/will be from/
   s/watchers form the/watchers from the/

- Section 4, third paragraph: I still believe that the phrase "The IETF sometimes does not give the right priority to actual deployments when designing a protocol" is an opinion that really does not contribute to the discussion at hand.  You could convey the same meaning without imparting a judgmental tone by slightly rewording as follows:

OLD:

    It seems that we need to think about the problem in a
    different way.  We need to think about scalability as part of the
    protocol design.  The IETF sometimes does not give the right priority
    to actual deployments when designing a protocol but in this case it
    seems that if we do not think about scalability with the protocol
    design it will be very hard to scale.

NEW:

    Adequate care is must be taken in addressing scalability as part
    of the initial protocol design; efforts at an attempt to shoehorn
    scalability at a later date will be doomed to failure.

IMHO, the above is just as critical without being overtly judgmental.

- S4, last paragraph at end of page 5:

   s/method is negotiating media/method negotiates media/