A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : OSPF Extensions in Support of Routing and Wavelength Assignment (RWA) in Wavelength Switched Optical Networks (WSONs)
Author(s) : F. Zhang, et al.
Filename : draft-zhang-ccamp-rwa-wson-routing-ospf-00.txt
Pages : 17
Date : 2009-03-01
Wavelength switched optical networks (WSONs) are based on Wavelength
Division Multiplexing (WDM) in which user traffic is carried by data
channels of different optical wavelengths. In traditional WDM
Networks, each wavelength path is statically configured. With the
deployment of Reconfigurable Optical Add-Drop Multiplexers (ROADMs),
photonic cross-connects (PXCs), and tunable laser, WSONs have become
more dynamic, and operators can flexibly set up wavelength paths to
carry user traffic.
In WSONs where there are no or a limited number of switches capable
of wavelength conversion paths must be set up subject to the
"wavelength continuity" constraint. This leads to a path computation
problem known as routing and wavelength assignment (RWA). In order to
perform such computations, it is necessary to collect information
about the available wavelengths within the network.
This document describes OSPF routing protocols extensions to support
Wavelength Switched Optical Networks (WSON) under the control of
Generalized MPLS (GMPLS).
Conventions used in this document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC-2119 [RFC2119].
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