PCEP extensions for GMPLS
draft-ietf-pce-gmpls-pcep-extensions-15

Document Type Active Internet-Draft (pce WG)
Last updated 2019-10-17
Replaces draft-margaria-pce-gmpls-pcep-extensions
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Network Working Group                                   C. Margaria, Ed.
Internet-Draft                                                   Juniper
Intended status: Standards Track                O. Gonzalez de Dios, Ed.
Expires: April 17, 2020            Telefonica Investigacion y Desarrollo
                                                           F. Zhang, Ed.
                                                     Huawei Technologies
                                                        October 15, 2019

                       PCEP extensions for GMPLS
                draft-ietf-pce-gmpls-pcep-extensions-15

Abstract

   A Path Computation Element (PCE) provides path computation functions
   for Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS)
   networks.  Additional requirements for GMPLS are identified in
   RFC7025.

   This memo provides extensions to the Path Computation Element
   communication Protocol (PCEP) for the support of the GMPLS control
   plane to address those requirements.

Status of This Memo

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

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   This Internet-Draft will expire on April 17, 2020.

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
   (https://trustee.ietf.org/license-info) in effect on the date of

Margaria, et al.         Expires April 17, 2020                 [Page 1]
Internet-Draft             PCEP Ext for GMPLS               October 2019

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  PCEP Requirements for GMPLS . . . . . . . . . . . . . . .   5
     1.3.  Requirements Applicability  . . . . . . . . . . . . . . .   5
       1.3.1.  Requirements on Path Computation Request  . . . . . .   6
       1.3.2.  Requirements on Path Computation Response . . . . . .   7
     1.4.  Existing Support for GMPLS in Base PCEP Objects and its
           Limitations . . . . . . . . . . . . . . . . . . . . . . .   7
   2.  PCEP Objects and Extensions . . . . . . . . . . . . . . . . .  10
     2.1.  GMPLS Capability Advertisement  . . . . . . . . . . . . .  10
       2.1.1.  GMPLS Computation TLV in the Existing PCE Discovery
               Protocol  . . . . . . . . . . . . . . . . . . . . . .  10
       2.1.2.  OPEN Object Extension GMPLS-CAPABILITY TLV  . . . . .  10
     2.2.  RP Object Extension . . . . . . . . . . . . . . . . . . .  11
     2.3.  BANDWIDTH Object Extensions . . . . . . . . . . . . . . .  12
     2.4.  LOAD-BALANCING Object Extensions  . . . . . . . . . . . .  14
     2.5.  END-POINTS Object Extensions  . . . . . . . . . . . . . .  16
       2.5.1.  Generalized Endpoint Object Type  . . . . . . . . . .  17
       2.5.2.  END-POINTS TLV Extensions . . . . . . . . . . . . . .  20
     2.6.  IRO Extension . . . . . . . . . . . . . . . . . . . . . .  24
     2.7.  XRO Extension . . . . . . . . . . . . . . . . . . . . . .  24
     2.8.  LSPA Extensions . . . . . . . . . . . . . . . . . . . . .  26
     2.9.  NO-PATH Object Extension  . . . . . . . . . . . . . . . .  26
       2.9.1.  Extensions to NO-PATH-VECTOR TLV  . . . . . . . . . .  27
   3.  Additional Error-Types and Error-Values Defined . . . . . . .  27
   4.  Manageability Considerations  . . . . . . . . . . . . . . . .  29
     4.1.  Control of Function through Configuration and Policy  . .  29
     4.2.  Information and Data Models . . . . . . . . . . . . . . .  29
     4.3.  Liveness Detection and Monitoring . . . . . . . . . . . .  29
     4.4.  Verifying Correct Operation . . . . . . . . . . . . . . .  30
     4.5.  Requirements on Other Protocols and Functional Components  30
     4.6.  Impact on Network Operation . . . . . . . . . . . . . . .  30
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  30
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