Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks (RFC7446)
Original Publication Date: 2015-Feb-01
Included in the Prior Art Database: 2015-Feb-13
Internet Society Requests For Comment (RFCs)
Y. Lee: AUTHOR [+6]
The purpose of the WSON information model described in this document is to facilitate constrained optical path computation, and as such it is not a general-purpose network management information model. This constraint is frequently referred to as the "wavelength continuity" constraint, and the corresponding constrained optical path computation is known as the Routing and Wavelength Assignment (RWA) problem. Hence, the information model must provide sufficient topology and wavelength restriction and availability information to support this computation. More details on the RWA process and WSON subsystems and their properties can be found in [RFC6163]. The model defined here includes constraints between WSON signal attributes and network elements but does not include optical impairments.
Internet Engineering Task Force (IETF) Y. Lee, Ed. Request for Comments: 7446 Huawei Category: Informational G. Bernstein, Ed. ISSN: 2070-1721 Grotto Networking D. Li Huawei W. Imajuku NTT February 2015
Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks
This document provides a model of information needed by the Routing and Wavelength Assignment (RWA) process in Wavelength Switched Optical Networks (WSONs). The purpose of the information described in this model is to facilitate constrained optical path computation in WSONs. This model takes into account compatibility constraints between WSON signal attributes and network elements but does not include constraints due to optical impairments. Aspects of this information that may be of use to other technologies utilizing a GMPLS control plane are discussed.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for informational purposes.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7446.
Lee, et al. Informational [Page 1]
RFC 7446 WSON Information Model February 2015
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