This memo provides a framework for applying Generalized Multi-Protocol Label Switching (GMPLS) and the Path Computation Element (PCE) architecture to the control of wavelength switched optical networks (WSON). In particular we provide control plane models for key wavelength switched optical network subsystems and processes. The subsystems include wavelength division multiplexed links, tunable laser transmitters, reconfigurable optical add/drop multiplexers (ROADM) and wavelength converters.
Lightpath provisioning, in general, requires the routing and wavelength assignment (RWA) process. This process is reviewed and the information requirements, both static and dynamic for this process are presented, along with alternative implementation scenarios that could be realized via GMPLS/PCE and/or extended GMPLS/PCE protocols. This memo does NOT address optical impairments in any depth and focuses on topological elements and path selection constraints that are common across different WSON environments. It is expected that a variety of different techniques will be applied to optical impairments depending on the type of WSON, such as access, metro or long haul.
This is currently a Common Control and Measurement Plane (CCAMP) Working Group draft at the IETF. This is an informational document and not a standards track document. Note that almost all IETF achitecture and framework documents are informational.
Attached below are the draft slides for the Dublin July 2008 CCAMP meeting, the current working draft, and the current editors draft using the MS Word template. Please check in with us prior to making changes since all changes must be coordinated.
We are currently in the process of updating: (a) Furnish more information on control plane architectural alternatives, (b) Add usage scenarios for the impairment free case.