PCEP Extension for WSON Routing and Wavelength Assignment
draft-ietf-pce-wson-rwa-ext-06

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Replaces draft-lee-pce-wson-rwa-ext
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Network Working Group                                       Y. Lee, Ed.
Internet Draft                                      Huawei Technologies

Intended status: Standard Track                        R. Casellas, Ed.
Expires: February 2017                                             CTTC

                                                      December 16, 2016

         PCEP Extension for WSON Routing and Wavelength Assignment

                    draft-ietf-pce-wson-rwa-ext-06.txt

Abstract

   This document provides the Path Computation Element communication
   Protocol (PCEP) extensions for the support of Routing and Wavelength
   Assignment (RWA) in Wavelength Switched Optical Networks (WSON).
   Lightpath provisioning in WSONs requires a routing and wavelength
   assignment (RWA) process.  From a path computation perspective,
   wavelength assignment is the process of determining which wavelength
   can be used on each hop of a path and forms an additional routing
   constraint to optical light path computation.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with
   the provisions of BCP 78 and BCP 79.

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Lee & Casellas        Expires February 16, 2017                [Page 1]
Internet-Draft       PCEP Extension for WSON RWA            August 2016

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html.

   This Internet-Draft will expire on February 16, 2017.

Copyright Notice

   Copyright (c) 2016 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
   (http://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
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   document must include Simplified BSD License text as described in
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   warranty as described in the Simplified BSD License.

Table of Contents

   1. Terminology....................................................3
   2. Requirements Language..........................................3
   3. Introduction...................................................3
   4. Encoding of a RWA Path Request.................................6
      4.1. Wavelength Assignment (WA) Object.........................6
      4.2. Wavelength Selection TLV..................................8
      4.3. Wavelength Restriction Constraint TLV.....................8
         4.3.1. Link Identifier Field...............................11
         4.3.2. Wavelength Restriction Field........................12
      4.4. Signal processing capability restrictions................13
         4.4.1. Signal Processing Exclusion XRO Sub-Object..........14
         4.4.2. IRO sub-object: signal processing inclusion.........15
   5. Encoding of a RWA Path Reply..................................15
      5.1. Error Indicator..........................................16
      5.2. NO-PATH Indicator........................................17
   6. Manageability Considerations..................................17
      6.1. Control of Function and Policy...........................17
      6.2. Information and Data Models, e.g. MIB module.............18
      6.3. Liveness Detection and Monitoring........................18
      6.4. Verifying Correct Operation..............................18
      6.5. Requirements on Other Protocols and Functional Components18
      6.6. Impact on Network Operation..............................19

Lee & Casellas         Expires February 16,2017                [Page 2]
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   7. Security Considerations.......................................19
   8. IANA Considerations...........................................19
      8.1. New PCEP Object..........................................19
      8.2. New PCEP TLV: Wavelength Selection TLV...................20
      8.3. New PCEP TLV: Wavelength Restriction Constraint TLV......20
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