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PIM Designated Router Load Balancing
draft-ietf-pim-drlb-03

Document type: Active Internet-Draft (pim WG)
Document stream: IETF
Last updated: 2014-02-14
Intended RFC status: Unknown
Other versions: plain text, pdf, html

IETF State: WG Document
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: I-D Exists
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Send notices to: No addresses provided

Network Working Group                                          Yiqun Cai
Internet-Draft                                                 Microsoft
Intended status: Standards Track                          Sri Vallepalli
Expires: August 19, 2014                                        Heidi Ou
                                                     Cisco Systems, Inc.
                                                              Andy Green
                                                         British Telecom
                                                       February 15, 2014

                  PIM Designated Router Load Balancing
                       draft-ietf-pim-drlb-03.txt

Abstract

   On a multi-access network, one of the PIM routers is elected as a
   Designated Router (DR).  On the last hop network, the PIM DR is
   responsible for tracking local multicast listeners and forwarding
   traffic to these listeners if the group is operated in PIM SM.  In
   this document, we propose a modification to the PIM SM protocol that
   allows more than one of these last hop routers to be selected so that
   the forwarding load can be distributed to and handled among these
   routers.

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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   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."

   This Internet-Draft will expire on August 19, 2014.

Copyright Notice

   Copyright (c) 2014 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

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   (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.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Applicability  . . . . . . . . . . . . . . . . . . . . . . . .  6
   4.  Functional Overview  . . . . . . . . . . . . . . . . . . . . .  6
     4.1.  GDR Candidates . . . . . . . . . . . . . . . . . . . . . .  7
     4.2.  Hash Mask  . . . . . . . . . . . . . . . . . . . . . . . .  7
     4.3.  PIM Hello Options  . . . . . . . . . . . . . . . . . . . .  8
   5.  Hello Option Formats . . . . . . . . . . . . . . . . . . . . .  9
     5.1.  PIM DR Load Balancing Capability (DRLBC) Hello Option  . .  9
     5.2.  PIM DR Load Balancing GDR (DRLBGDR) Hello Option . . . . . 10
   6.  Protocol Specification . . . . . . . . . . . . . . . . . . . . 11
     6.1.  PIM DR Operation . . . . . . . . . . . . . . . . . . . . . 11
     6.2.  PIM GDR Candidate Operation  . . . . . . . . . . . . . . . 11
     6.3.  PIM Assert Modification  . . . . . . . . . . . . . . . . . 12
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 14
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 14
   9.  Acknowledgement  . . . . . . . . . . . . . . . . . . . . . . . 14
   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     10.1. Normative Reference  . . . . . . . . . . . . . . . . . . . 14
     10.2. Informative References . . . . . . . . . . . . . . . . . . 14
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 15

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1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

[include full document text]