Subject: [PCN] PCN Problem Statement Draft

From: "Kwok-Ho Chan" <[email-masked]>
Date: Wed, 13 Sep 2006 18:52:05 -0400

Hi all:
Please see the initial PCN (Pre-Congestion Notification) Problem 
Statement draft:
http://standards.nortelnetworks.com/tsvwg/draft-chan-pcn-problem-statement-00.txt

This draft have been submitted to IETF, but you can retrieve it at 
the above link
prior to its availability on the IETF server.

We wish to use this Problem Statement draft to facilitate discussion on the
topic of Pre-Congestion Notification.

As this is the -00 version, this is still work-in-progress.
We invite discussions concerning this draft on [email-masked] and
plan to submit a -01 version prior to the 67th IETF @ San Diego draft 
submission
cut-off date.

We still have numerous open questions concerning this draft, they can be
categorized as:
1. Terminology.  As most new WG/BOF have.
     Currently 2 open questions: The usage of terms:
     - PCN-End (or Edge) Node (PEN)
     - PCN-Interior (or Intermediate) Node (PIN)
     For the Functional Architecture description section of the draft.
2. Problem Scope.
     One of the open questions:
     - What does "many flows" mean?  How many is "many"?  10, 20, 
100, 1000 flows?
       This relates to how "many" will provide accurate enough measurements
       (at the PIN, at the PEN).
3. What should the proposed WG (hopeful result of the BOF) standardize?
     Current 2 open questions:
     - Should measurement algorithm(s) at the PIN be standardized?
     - Should measurement algorithm(s) at the PEN be standardized?
     And what criteria to use for judging these algorithm(s)?
4. What about signaling?
     How should this work's signalling need be fullfilled?

These are just some initial thinkings on the discussion topics.

Please read this SHORT draft (16 pages including all the boiler plate 
text) and
start the discussion on [email-masked].

I plan to organize a file itemizing these and additional 
discussions/issues topics.
And using the itemization in the E-Mail Subject field for more user 
friendly, organized
discussion threads.
But please start the discussions ASAP.

Please also see our proposed draft charter (this same version had been sent to
[email-masked] on Sept 4, 2006, just making it available here for your 
convenience):
http://standards.nortelnetworks.com/tsvwg/PCN_draft_charter_v00.txt

Thank you very much!
-- Kwok --

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