Internet Engineering Task Force (IETF) F. Zhang, Ed.
Request for Comments: 7062 D. Li
Category: Informational Huawei
ISSN: 2070-1721 H. Li
CMCC
S. Belotti
Alcatel-Lucent
D. Ceccarelli
Ericsson
November 2013
Framework for GMPLS and PCE Control of
G.709 Optical Transport Networks
Abstract
This document provides a framework to allow the development of
protocol extensions to support Generalized Multi-Protocol Label
Switching (GMPLS) and Path Computation Element (PCE) control of
Optical Transport Networks (OTNs) as specified in ITU-T
Recommendation G.709 as published in 2012.
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/rfc7062.
Zhang, et al. Informational [Page 1]RFC 7062 OTN Framework November 2013Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
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Table of Contents
1. Introduction ....................................................3
2. Terminology .....................................................3
3. G.709 Optical Transport Network .................................4
3.1. OTN Layer Network ..........................................5
3.1.1. Client Signal Mapping ...............................6
3.1.2. Multiplexing ODUj onto Links ........................7
3.1.2.1. Structure of MSI Information ...............9
4. Connection Management in OTN ...................................10
4.1. Connection Management of the ODU ..........................11
5. GMPLS/PCE Implications .........................................13
5.1. Implications for Label Switched Path (LSP) Hierarchy ......13
5.2. Implications for GMPLS Signaling ..........................14
5.3. Implications for GMPLS Routing ............................16
5.4. Implications for Link Management Protocol .................18
5.5. Implications for Control-Plane Backward Compatibility .....19
5.6. Implications for Path Computation Elements ................20
5.7. Implications for Management of GMPLS Networks .............20
6. Data-Plane Backward Compatibility Considerations ...............21
7. Security Considerations ........................................21
8. Acknowledgments ................................................22
9. Contributors ...................................................22
10. References ....................................................23
10.1. Normative References .....................................23
10.2. Informative References ...................................24
Zhang, et al. Informational [Page 2]RFC 7062 OTN Framework November 20131. Introduction
Optical Transport Networks (OTNs) have become a mainstream layer 1
technology for the transport network. Operators want to introduce
datatracker.ietf.org