PCEP Extensions for WSON Impairments
draft-lee-pce-wson-impairments-05

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Network Working Group                                            Y. Lee
Internet Draft                                                   Huawei
Intended status: Standard Track
Expires: January 2018                                      G. Bernstein
                                                      Grotto Networking

                                                       Jonas Martensson
                                                                  Acreo

                                                              T. Takeda
                                                                    NTT

                                                           T. Tsuritani
                                                                   KDDI

                                                          July 31, 2017

                   PCEP Extensions for WSON Impairments

                   draft-lee-pce-wson-impairments-05.txt

Abstract

   As an optical signal progresses along its path it may be altered by
   the various physical processes in the optical fibers and devices it
   encounters. When such alterations result in signal degradation,
   these processes are usually referred to as "impairments". These
   physical characteristics may be important constraints to consider in
   path computation process in wavelength switched optical networks.

   This document provides PCEP extensions to support Impairment Aware
   Routing and Wavelength Assignment (IA-RWA) in wavelength switched
   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
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   Drafts.

Lee & Bernstein        Expires January 31, 2018                [Page 1]
Internet-Draft   PCEP Extension for WSON Impairments          July 2017

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   Copyright (c) 2017 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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Conventions used in this document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC-2119 0.

Table of Contents

   1. Introduction...................................................3
      1.1. WSON RWA Processes (no impairments).......................5

Lee & Bernstein        Expires January 31, 2018                [Page 2]
Internet-Draft   PCEP Extension for WSON Impairments          July 2017

      1.2. WSON IA-RWA Processes.....................................6
   2. WSON PCE Architectures and Requirements........................7
      2.1. RWA PCC to PCE Interface..................................8
         2.1.1. A new RWA path request...............................8
            2.1.1.1. Signal Quality Measure TLV......................9
         2.1.2. A new RWA path reply................................11
            2.1.2.1. Signal Quality Measure TLV.....................11
      2.2. RWA-PCE to IV-PCE Interface..............................13
         2.2.1. A new impairment-validated (IV) path request........14
         2.2.2. A new impairment-validated (IV) path reply..........14
   3. Manageability Considerations..................................14
      3.1. Control of Function and Policy...........................14
      3.2. Information and Data Models, e.g. MIB module.............15
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