Subject: [Pce] New Liaison Statement, "WSON Impairment Work in CCAMP"

From: Deborah Brungard(IETF CCAMP WG) <[email-masked]>
Date: Wed, 16 Sep 2009 08:48:48 -0700 (PDT)

Title: WSON Impairment Work in CCAMP
Submission Date: 2009-09-16
URL of the IETF Web page: https://datatracker.ietf.org/public/liaison_detail.cgi?detail_id=578 
Please reply by 2009-10-30

From: Deborah Brungard(IETF CCAMP WG) <[email-masked]>
To: ITU-T SG15 Question 6, Question 12, and Question 14([email-masked],[email-masked],[email-masked])
Cc: [email-masked]
[email-masked]
[email-masked]
[email-masked]
[email-masked]
[email-masked]
[email-masked]
[email-masked]
[email-masked]
[email-masked]
Reponse Contact: [email-masked]
Technical Contact: [email-masked]
Purpose: For action 
Body: The CCAMP Working Group of IETF thanks Question 12 for their liaison from the September 2008 meeting informing of their initiation of work to be done in cooperation with Question 6 on developing a network model for WSON which will include optical impairments. We would like to inform you of our progress in this area as documented in the CCAMP document "A Framework for the Control of Wavelength Switched Optical Networks (WSON) with Impairments":
http://www.ietf.org/id/draft-ietf-ccamp-wson-impairments-00.txt

This document provides a framework for GMPLS protocols and mechanisms to support impairment aware routing and wavelength assignment. The deployment scenarios are based on the categories discussed at Question 6's Sunnyvale meeting:
http://ifa.itu.int/t/2009/sg15/exchange/wp2/q6/Meetings/2009-03-Sunnyvale/Contributions/WD6-38.doc

We would appreciate your consideration of this document in your work and would you please inform us of the scope of your work and the timelines. For CCAMP's impairment work, CCAMP is focused on scenarios where approximated impairment estimation using ITU-T defined parameters and approximation techniques (G.680) may be used. The objective of CCAMP work is to distribute the information which is needed to allow path computation and signaling of new paths. We would appreciate your input on the parameter information which is needed to be distributed by a control plane, to be used by either a node for internal path computation or a Path Computation Element, and its properties, so as to understand the control plane distribution requirements. In addition, we would appreciate your perspective on control plane modeling and implications with regard to ITU-T's G.872 OTN aspects e.g. OTN multi-layers (OTS, OMS, OCh), regenerators, and o/e/o (OCh, OTU, ODU).

Best Regards,

Lou Berger and Deborah Brungard
IETF CCAMP Working Group Co-Chairs
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