RE: New draft on wavelength switched optical networks

["Bardalai, Snigdho" <Snigdho.Bardalai@us.fujitsu.com>]

Hi Greg,

I believe your ID has presented some of the key points regarding wavelength routing.

I think we are still missing a few other issues that may have to be considered.
1. Constraints related to the configuration of the ROADM switching elements. For
   example, transponders could be pre-wired to a specific port on the ROADM, and hence
   restricting the wavelengths that could be routed to that transponder.
2. When considering wavelength routing it may be important to consider
   if regeneration of the signal is required. Also, it may be equally important to
   be able to specify, if and where reqeneration would be required during signaling
   (assuming an external entity such as a PCE can determine where the regeneration can
   be done).
   
It would be of much interest to me to learn what is your (and others) opinion on these
issues.

Regards,
Snigdho

-----Original Message-----
From: owner-ccamp@ops.ietf.org [mailto:owner-ccamp@ops.ietf.org]On
Behalf Of Greg Bernstein
Sent: Wednesday, June 27, 2007 12:39 PM
To: ccamp; pce@ietf.org
Cc: Young Lee
Subject: New draft on wavelength switched optical networks


Hi CCAMPer's and PCEr's, we have just published a new draft on the 
"Applicability of GMPLS and PCE to Wavelength Switched Optical 
Networks"  
http://www.ietf.org/internet-drafts/draft-bernstein-ccamp-wavelength-switched-00.txt 
.

This draft looks at optical networks that include tunable lasers and 
ROADM (reconfigurable optical add/drop multiplexers) with no or limited 
wavelength conversion capability (these components are defined in the 
draft). 
These limitations lead to the RWA (routing and wavelength assignment) 
problem which is a bit more demanding in terms of input information and 
computation than other constrained path computation problems.  In the 
draft we look at the implications for GMPLS signaling, GMPLS routing, 
and PCE protocols and suggest some potential extensions to better 
accommodate this application.

We'd appreciate feedback/collaboration on (a) overall interest in this 
application, (b) requirements discussions, and (c) solution/extension 
discussions.

Cheers

Greg B.

-- 
===================================================
Dr Greg Bernstein, Grotto Networking (510) 573-2237