PCEP Extension for WSON Routing and Wavelength Assignment
draft-ietf-pce-wson-rwa-ext-17

Document Type Active Internet-Draft (pce WG)
Last updated 2019-03-26 (latest revision 2019-03-01)
Replaces draft-lee-pce-wson-rwa-ext
Stream IETF
Intended RFC status Proposed Standard
Formats plain text pdf html bibtex
Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Daniele Ceccarelli
Shepherd write-up Show (last changed 2017-01-12)
IESG IESG state RFC Ed Queue
Consensus Boilerplate Yes
Telechat date
Responsible AD Deborah Brungard
Send notices to "Daniele Ceccarelli" <daniele.ceccarelli@ericsson.com>
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
RFC Editor RFC Editor state MISSREF
Network Working Group                                       Y. Lee, Ed.
Internet Draft                                      Huawei Technologies

Intended status: Standard Track                        R. Casellas, Ed.
Expires: September 1, 2019                                         CTTC

                                                          March 1, 2019

PCEP Extension for WSON Routing and Wavelength Assignment

                      draft-ietf-pce-wson-rwa-ext-17

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).
   Path 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 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.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six
   months and may be updated, replaced, or obsoleted by other documents
   at any time.  It is inappropriate to use Internet-Drafts as
   reference material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt

Lee & Casellas          Expires September 2019                 [Page 1]
Internet-Draft       PCEP Extension for WSON RWA             March 2019

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

   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
   (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
   respect to this document.  Code Components extracted from this
   document must include Simplified BSD License text as described in
   Section 4.e of the Trust Legal Provisions and are provided without
   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.........................7
      4.2. Wavelength Selection TLV..................................9
      4.3. Wavelength Restriction Constraint TLV.....................9
         4.3.1. Link Identifier Field...............................12
         4.3.2. Wavelength Restriction Field........................14
      4.4. Signal Processing Capability Restrictions................15
         4.4.1. Signal Processing Exclusion.........................16
         4.4.2. Signal Processing Inclusion.........................18
   5. Encoding of a RWA Path Reply..................................19
      5.1. Wavelength Allocation TLV................................19
      5.2. Error Indicator..........................................20
      5.3. NO-PATH Indicator........................................21
   6. Manageability Considerations..................................22
      6.1. Control of Function and Policy...........................22
      6.2. Liveness Detection and Monitoring........................22
      6.3. Verifying Correct Operation..............................22
      6.4. Requirements on Other Protocols and Functional Components22
      6.5. Impact on Network Operation..............................23

Lee & Casellas          Expires September 2019                 [Page 2]
Internet-Draft       PCEP Extension for WSON RWA             March 2019

   7. Security Considerations.......................................23
   8. IANA Considerations...........................................23
      8.1. New PCEP Object: Wavelength Assignment Object............23
      8.2. WA Object Flag Field.....................................23
      8.3. New PCEP TLV: Wavelength Selection TLV...................24
      8.4. New PCEP TLV: Wavelength Restriction Constraint TLV......24
Show full document text