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Status:

INFORMATIONAL

Authors:

O. Gonzalez de Dios, Ed.
R. Casellas, Ed.
F. Zhang
X. Fu
D. Ceccarelli
I. Hussain

Stream:

IETF

Source:

ccamp (rtg)

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DOI:  https://doi.org/10.17487/RFC7698

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Abstract

To allow efficient allocation of optical spectral bandwidth forsystems that have high bit-rates, the International TelecommunicationUnion Telecommunication Standardization Sector (ITU-T) has extendedits Recommendations G.694.1 and G.872 to include a new DenseWavelength Division Multiplexing (DWDM) grid by defining a set ofnominal central frequencies, channel spacings, and the concept of the"frequency slot". In such an environment, a data-plane connection isswitched based on allocated, variable-sized frequency ranges withinthe optical spectrum, creating what is known as a flexible grid(flexi-grid).

Given the specific characteristics of flexi-grid optical networks andtheir associated technology, this document defines a framework andthe associated control-plane requirements for the application of theexisting GMPLS architecture and control-plane protocols to thecontrol of flexi-grid DWDM networks. The actual extensions to theGMPLS protocols will be defined in companion documents.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.