Update to Include Route Object (IRO) specification in Path Computation Element communication Protocol (PCEP)
draft-ietf-pce-iro-update-06

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Last updated 2016-04-21 (latest revision 2016-03-14)
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PCE Working Group                                               D. Dhody
Internet-Draft                                       Huawei Technologies
Updates: 5440 (if approved)                               March 14, 2016
Intended status: Standards Track
Expires: September 15, 2016

 Update to Include Route Object (IRO) specification in Path Computation
                 Element communication Protocol (PCEP)
                      draft-ietf-pce-iro-update-06

Abstract

   The Path Computation Element Communication Protocol (PCEP) provides
   for communications between a Path Computation Client (PCC) and a PCE,
   or between two PCEs.  RFC 5440 defines the Include Route Object (IRO)
   to specify network elements to be traversed in the computed path.
   The specification did not specify if the IRO contains an ordered or
   un-ordered list of sub-objects.  During recent discussions, it was
   determined that there was a need to define a standard representation
   to ensure interoperability.

   An informal survey was conducted to determine the state of current
   and planned implementations with respect to IRO ordering and the
   handling of an attribute of the IRO's sub-object, the Loose hop bit
   (L bit).

   This document updates RFC 5440 regarding the IRO specification, based
   on the survey conclusion and recommendation.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 15, 2016.

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Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
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   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Update in IRO specification . . . . . . . . . . . . . . . . .   3
     2.1.  Update to RFC 5440  . . . . . . . . . . . . . . . . . . .   4
   3.  Other Considerations  . . . . . . . . . . . . . . . . . . . .   4
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   The Path Computation Element Communication Protocol (PCEP) provides
   for communications between a Path Computation Client (PCC) and a PCE,
   or between two PCEs.  [RFC5440] defines the Include Route Object
   (IRO) to specify network elements to be traversed in the computed

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   path.  The specification did not define if the IRO is an ordered or
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