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
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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)
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