Framework and Requirements for GMPLS-Based Control of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) Networks (RFC7698)
Original Publication Date: 2015-Nov-01
Included in the Prior Art Database: 2016-Feb-07
Internet Society Requests For Comment (RFCs)
O. Gonzalez de Dios: AUTHOR [+7]
The term "flexible grid" ("flexi-grid" for short), as defined by the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) Study Group 15 in the latest version of [G.694.1], refers to the updated set of nominal central frequencies (a frequency grid), channel spacing, and optical spectrum management and allocation considerations that have been defined in order to allow an efficient and flexible allocation and configuration of optical spectral bandwidth for systems that have high bit-rates.
Internet Engineering Task Force (IETF) O. Gonzalez de Dios, Ed. Request for Comments: 7698 Telefonica I+D Category: Informational R. Casellas, Ed. ISSN: 2070-1721 CTTC F. Zhang Huawei X. Fu Stairnote D. Ceccarelli Ericsson I. Hussain Infinera November 2015
Framework and Requirements for GMPLS-Based Control of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) Networks
To allow efficient allocation of optical spectral bandwidth for systems that have high bit-rates, the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) has extended its Recommendations G.694.1 and G.872 to include a new Dense Wavelength Division Multiplexing (DWDM) grid by defining a set of nominal central frequencies, channel spacings, and the concept of the "frequency slot". In such an environment, a data-plane connection is switched based on allocated, variable-sized frequency ranges within the optical spectrum, creating what is known as a flexible grid (flexi-grid).
Given the specific characteristics of flexi-grid optical networks and their associated technology, this document defines a framework and the associated control-plane requirements for the application of the existing GMPLS architecture and control-plane protocols to the control of flexi-grid DWDM networks. The actual extensions to the GMPLS protocols will be defined in companion documents.
Gonzalez de Dios, et al. Informational [Page...