PCEP Extensions for BIER
draft-chen-pce-bier-00

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Networking Working Group                                       Ran. Chen
Internet-Draft                                              Zheng. Zhang
Intended status: Standards Track                         ZTE Corporation
Expires: April 15, 2016                                 October 13, 2015

                        PCEP Extensions for BIER
                         draft-chen-pce-bier-00

Abstract

   Bit Index Explicit Replication (BIER) is an architecture that
   provides optimal multicast forwarding through a "BIER domain" without
   requiring intermediate routers to maintain any multicast related per-
   flow state.  BIER forwards and replicates packets based on a
   BitString in the packet header.A BIER Path can be derived from a
   variety of mechanisms, including an IGP Shortest Path Tree (SPT),
   explicit configuration, or a Path Computation Element (PCE).

   This document specifies extensions to the Path Computation Element
   Protocol (PCEP) to handle requests and responses for the computation
   of paths for BIER TE LSPs.

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 15, 2016.

Copyright Notice

   Copyright (c) 2015 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

Chen & Zhang             Expires April 15, 2016                 [Page 1]
Internet-Draft              PCEP Ext for BIER               October 2015

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   include Simplified BSD License text as described in Section 4.e of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
   3.  Overview of PCEP Operation in BIER Networks . . . . . . . . .   3
   4.  BIER PCEP Message Extensions  . . . . . . . . . . . . . . . .   3
     4.1.  BIER Capability Advertisement . . . . . . . . . . . . . .   3
       4.1.1.  The OPEN Object . . . . . . . . . . . . . . . . . . .   3
         4.1.1.1.  The BIER PCE Capability TLV . . . . . . . . . . .   3
     4.2.  Path Computation Request/Reply Message Extensions . . . .   4
       4.2.1.  The RP/SPR Object . . . . . . . . . . . . . . . . . .   4
       4.2.2.  The New BIER END-POINT Object . . . . . . . . . . . .   5
       4.2.3.  ERO Object  . . . . . . . . . . . . . . . . . . . . .   5
         4.2.3.1.  BIER-ERO Subobject  . . . . . . . . . . . . . . .   5
       4.2.4.  RRO Object  . . . . . . . . . . . . . . . . . . . . .   7
         4.2.4.1.  RRO Processing  . . . . . . . . . . . . . . . . .   7
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  PCEP Objects  . . . . . . . . . . . . . . . . . . . . . .   7
     6.2.  PCEP-Error Objects and Types  . . . . . . . . . . . . . .   8
     6.3.  PCEP TLV Type Indicators  . . . . . . . . . . . . . . . .   8
     6.4.  New Path Setup Type . . . . . . . . . . . . . . . . . . .   8
   7.  Normative references  . . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   Bit Index Explicit Replication (BIER) is an architecture that
   provides optimal multicast forwarding through a "BIER domain" without
   requiring intermediate routers to maintain any multicast related per-
   flow state.  BIER forwards and replicates packets based on a
   BitString in the packet header.A BIER Path can be derived from a
   variety of mechanisms, including an IGP Shortest Path Tree (SPT),
   explicit configuration, or a Path Computation Element (PCE).

   This document specifies extensions to the Path Computation Element
   Protocol (PCEP) to handle requests and responses for the computation
   of paths for BIER TE LSPs.

Chen & Zhang             Expires April 15, 2016                 [Page 2]
Internet-Draft              PCEP Ext for BIER               October 2015
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