GMPLS OSPF-TE Extensions in Support of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) Networks
RFC 8363
Document | Type | RFC - Proposed Standard (May 2018; No errata) | |
---|---|---|---|
Authors | Xian Zhang , Haomian Zheng , Ramon Casellas , Oscar de Dios , Daniele Ceccarelli | ||
Last updated | 2018-12-19 | ||
Replaces | draft-zhang-ccamp-flexible-grid-ospf-ext | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Dieter Beller | ||
Shepherd write-up | Show (last changed 2016-10-06) | ||
IESG | IESG state | RFC 8363 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | "Dieter Beller" <dieter.beller@nokia.com> | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) X. Zhang Request for Comments: 8363 H. Zheng Category: Standards Track Huawei ISSN: 2070-1721 R. Casellas CTTC O. Gonzalez de Dios Telefonica D. Ceccarelli Ericsson May 2018 GMPLS OSPF-TE Extensions in Support of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) Networks Abstract 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 channel spacings, a set of nominal central frequencies, and the concept of the "frequency slot". Corresponding techniques for data-plane connections are known as "flexi-grid". Based on the characteristics of flexi-grid defined in G.694.1 and in RFCs 7698 and 7699, this document describes the Open Shortest Path First - Traffic Engineering (OSPF-TE) extensions in support of GMPLS control of networks that include devices that use the new flexible optical grid. Status of This Memo This is an Internet Standards Track document. 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). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8363. Zhang, et al. Standards Track [Page 1] RFC 8363 GMPLS OSPF-TE for Flexi-Grid DWDM May 2018 Copyright Notice Copyright (c) 2018 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1. Conventions Used in This Document . . . . . . . . . . . . 4 3. Requirements for Flexi-Grid Routing . . . . . . . . . . . . . 4 3.1. Available Frequency Ranges . . . . . . . . . . . . . . . 4 3.2. Application Compliance Considerations . . . . . . . . . . 5 3.3. Comparison with Fixed-Grid DWDM Links . . . . . . . . . . 6 4. Extensions . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1. Interface Switching Capability Descriptor (ISCD) Extensions for Flexi-Grid . . . . . . . . . . . . . . . . 7 4.1.1. Switching Capability Specific Information (SCSI) . . 8 4.1.2. An SCSI Example . . . . . . . . . . . . . . . . . . . 10 4.2. Extensions to the Port Label Restrictions Field . . . . . 11 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13 5.1. New ISCD Switching Type . . . . . . . . . . . . . . . . . 13 5.2. New SCSI Type . . . . . . . . . . . . . . . . . . . . . . 13 6. Security Considerations . . . . . . . . . . . . . . . . . . . 13 7. References . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.1. Normative References . . . . . . . . . . . . . . . . . . 14 7.2. Informative References . . . . . . . . . . . . . . . . . 15 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 16 Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 17 Zhang, et al. Standards Track [Page 2] RFC 8363 GMPLS OSPF-TE for Flexi-Grid DWDM May 2018 1. Introduction [G.694.1] defines the Dense Wavelength Division Multiplexing (DWDM) frequency grids for Wavelength Division Multiplexing (WDM)Show full document text