datatracker.ietf.org
Sign in
Version 5.3.0, 2014-04-12
Report a bug

Liaison Statement: WSON work in Q12/15

Submission Date: 2008-10-06
From: ITU-T SG 15 (Greg Jones)
To: IETF CCAMP WG (adrian@olddog.co.uk, dbrungard@att.com)
Cc:sob@harvard.edu
rcallon@juniper.net
dward@cisco.com
yoichi.maeda@ntt-at.co.jp
sjtrowbridge@alcatel-lucent.com
betts01@nortel.com
hklam@alcatel-lucent.com
Response Contact: tsbsg15@itu.int
Technical Contact: betts01@nortel.com
hklam@alcatel-lucent.com
Purpose: For information
Attachments: WSON work in Q12/15 - body text in pdf
Body:
Thank you for your liaison statement of September 6, 2008 to Q3/15
regarding the OTN work plan advising us of your work on Wavelength
Switched Optical Networks (WSON).
Q.12/15 has initiated work on developing a network model for WSON, we
will be working in cooperation with Q.6/15 to include optical
impairments in this model.  One intended output of this work is a model
that can be used for path computation in the presence of both optical
impairments and blocking switches.  We note that the aspects related to
optical impairments are quite challenging and we are engaging the
appropriate experts.  In view of this we would encourage you to
continue your focus on networks in which impairments can be neglected
and only wavelength assignment needs to be considered.
We noted that you are considering the use of a matrix to represent the
blocking characteristics of an asymmetrical switch (e.g. ROADM).  We
are considering the use of a bipartite graph since it appears to be
suitable for path computation.
We will review the internet drafts that you reference and would be
obliged if you kept us informed of your progress on work in this area.
An electronic copy of this liaison statement is available at:
http://ties.itu.ch/ftp/public/itu-t/tsg15opticaltransport/COMMUNICATIONS/