PCEP Extension for Distribution of Link-State and TE information for Optical Networks
draft-lee-pce-pcep-ls-optical-07
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PCE Working Group Young Lee
Haomian Zheng
Internet Draft Huawei
Intended Status: Standard
Expires: September 1, 2019 Daniele Ceccarelli
Ericsson
Wei Wang
Beijing Univ. of Posts and Telecom
Peter Park
KT
Bin Young Yoon
ETRI
March 1, 2019
PCEP Extension for Distribution of Link-State and TE information for
Optical Networks
draft-lee-pce-pcep-ls-optical-07
Abstract
In order to compute and provide optimal paths, Path Computation
Elements (PCEs) require an accurate and timely Traffic Engineering
Database (TED). Traditionally this Link State and TE information has
been obtained from a link state routing protocol (supporting traffic
engineering extensions).
This document extends the Path Communication Element Communication
Protocol (PCEP) with Link-State and TE information for optical
networks.
Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with
the provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that
Lee Expires September 2019 [Page 1]
Internet-Draft PCEP LS for Optical Networks March 2019
other groups may also distribute working documents as Internet-
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This Internet-Draft will expire on September 1, 2019.
Copyright Notice
Copyright (c) 2019 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
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Table of Contents
1. Introduction...................................................3
2. Applicability..................................................4
3. Requirements for PCEP extension................................5
3.1. Reachable source-destination..............................6
3.2. Optical latency...........................................6
4. PCEP-LS extension for Optical Networks.........................7
4.1. Node Attributes TLV.......................................7
4.2. Link Attributes TLV.......................................8
4.3. PCEP-LS for Optical Network Abstraction...................9
5. Security Considerations.......................................10
6. IANA Considerations...........................................10
6.1. PCEP-LS Sub-TLV Type Indicators..........................10
7. References....................................................11
Lee Expires September 2019 [Page 2]
Internet-Draft PCEP LS for Optical Networks March 2019
7.1. Normative References.....................................11
7.2. Informative References...................................12
Appendix A. Contributor Addresses................................13
Author's Addresses...............................................14
1. Introduction
In Multiprotocol Label Switching (MPLS) and Generalized MPLS
(GMPLS), a Traffic Engineering Database (TED) is used in computing
paths for connection oriented packet services and for circuits. The
TED contains all relevant information that a Path Computation
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