PIM Assert Message Packing
draft-ietf-pim-assert-packing-00

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Last updated 2020-03-17
Replaces draft-liu-pim-assert-packing
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PIM Working Group                                            Yisong Liu
Internet Draft                                             China Mobile
Intended status: Standards Track                             M. McBride
Expires: September 17, 2020                                   T. Eckert
                                                              Futurewei
                                                           Mar 17, 2020

                        PIM Assert Message Packing
                     draft-ietf-pim-assert-packing-00

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 September 17, 2020.

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   Copyright (c) 2020 IETF Trust and the persons identified as the
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   This document is subject to BCP 78 and the IETF Trust's Legal
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Liu, et al.            Expire September, 2020                 [Page 1]
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   Section 4.e of the Trust Legal Provisions and are provided without
   warranty as described in the Simplified BSD License.

Abstract

   In PIM-SM shared LAN networks, there is typically more than one
   upstream router. When duplicate data packets appear on the LAN from
   different routers, assert packets are sent from these routers to
   elect a single forwarder. The PIM assert packets are sent
   periodically to keep the assert state. The PIM assert packet carries
   information about a single multicast source and group, along with
   the metric-preference and metric of the route towards the source or
   RP. This document defines a standard to send and receive multiple
   multicast source and group information in a single PIM assert packet
   in a shared network. This can be particularly helpful when there is
   traffic for a large number of multicast groups.

Table of Contents

   1. Introduction ................................................ 3
      1.1. Requirements Language .................................. 3
      1.2. Terminology ............................................ 3
   2. Use Cases ................................................... 3
      2.1. Enterprise network ..................................... 4
      2.2. Video surveillance ..................................... 4
      2.3. Financial Services ..................................... 4
      2.4. IPTV broadcast Video ................................... 4
      2.5. Summary ................................................ 4
   3. Solution .................................................... 5
      3.1. PIM Assert Packing Hello Option ........................ 5
      3.2. PIM Assert Packing Simple Type ......................... 5
      3.3. PIM Assert Packing Aggregation Type .................... 6
   4. Packet Format ............................................... 6
      4.1. PIM Assert Packing Hello Option ........................ 6
      4.2. PIM Assert Simple Packing Format ....................... 7
      4.3. PIM Assert Aggregation Packing Format .................. 8
   5. IANA Considerations ........................................ 11
   6. Security Considerations .................................... 11
   7. References ................................................. 11
      7.1. Normative References .................................. 11
      7.2. Informative References ................................ 12
   8. Acknowledgments ............................................ 12
   Authors' Addresses ............................................ 13

Liu, et al.            Expires September, 2020                [Page 2]
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1. Introduction

   In PIM-SM shared LAN networks, there is typically more than one
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