The CCAMP working group of the IETF thanks ITU-T SG15 for sharing their
"Optical Transport Networks & Technologies Standardization Work Plan"
in a liaison dated February 29th, 2008.
We have no specific comments on the plan, but would like to draw your
attention to work currently in progress within CCAMP to extend the
GMPLS control plane for use in Wavelength Switched Optical Networks
We have three working group drafts related to this topic as follows:
Framework for GMPLS and PCE Control of Wavelength Switched Optical
Generalized Labels for G.694 Lambda-Switching Capable Label Switching
Routing and Wavelength Assignment Information Model for Wavelength
Switched Optical Networks
At the moment, CCAMP has decided to split the effort into two parts:
1. Work on the Routing Wavelength Assignment (RWA) problem
2. Work on optical-impairment-based networking
At the moment effort is only being expended on the first of these, with
the problems of handling optical impairments being deferred for future
work. Please note that, at such a time that CCAMP does work with
optical impairments, it is not our intention to define impairments, but
we will defer to the ITU-T on this.
Lastly, it has been observed in the course of our work that the
modeling of asymmetric switches such as ROADMs may be an area that the
ITU-T would like to work on.
Adrian Farrel and Deborah Brungard
IETF CCAMP Working Group Co-Chairs