Multicast Considerations over IEEE 802 Wireless Media
draft-perkins-intarea-multicast-ieee802-00

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Internet Area [intarea]                                       C. Perkins
Internet-Draft                                                 Futurewei
Expires: September 22, 2016                                   D. Stanley
                                                                     HPE
                                                               W. Kumari
                                                                  Google
                                                              JC. Zuniga
                                                            InterDigital
                                                          March 21, 2016

         Multicast Considerations over IEEE 802 Wireless Media
             draft-perkins-intarea-multicast-ieee802-00.txt

Abstract

   This document describes some performance issues that have been
   observed when multicast packet transmission is attempted over IEEE
   802 wireless media.  Multicast features specified for IEEE 802
   wireless media related to multicast are also described, along with
   explanations about how these features can help ameliorate the
   observed performance issues.  IETF protocols that are likely to be
   affected by the observed performance issues are identified, and
   workarounds are proposed in some cases.  The performance of multicast
   over wireless media often can be quite different than the performance
   of unicast.  This draft describes the nature of the differences and
   the effects on representative IETF protocols.  We also describe some
   efforts that have been made by IEEE 802 Wireless groups to ameliorate
   the performance differences.

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 22, 2016.

Perkins, et al.        Expires September 22, 2016               [Page 1]
Internet-Draft      Multicast Over IEEE 802 Wireless          March 2016

Copyright Notice

   Copyright (c) 2016 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
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   (http://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Identified Issues at Layer 2  . . . . . . . . . . . . . . . .   3
   4.  Some Possible Effects on Representative IETF protocols  . . .   4
     4.1.  IPv4 uses . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  IPv6 uses . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.3.  Disabling Multicast on WiFi . . . . . . . . . . . . . . .   5
     4.4.  Spurious Neighbor Discovery . . . . . . . . . . . . . . .   5
   5.  Layer 2 optimizations . . . . . . . . . . . . . . . . . . . .   6
     5.1.  Proxy ARP in 802.11-2012  . . . . . . . . . . . . . . . .   6
     5.2.  Buffering to improve Power-Save . . . . . . . . . . . . .   7
     5.3.  IPv6 support in 802.11-2012 . . . . . . . . . . . . . . .   7
     5.4.  Directed Multicast Service (DMS)  . . . . . . . . . . . .   7
     5.5.  GroupCast with Retries (GCR)  . . . . . . . . . . . . . .   8
   6.  Higher Layer Optimizations and Mitigations  . . . . . . . . .   8
     6.1.  Mitigating Problems from Spurious Neighbor Discovery  . .   9
   7.  Multicast Considerations for Other Wireless Media . . . . . .  11
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   10. Informative References  . . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   Many IETF protocol designs depend upon multicast or broadcast for
   delivery of control messages to multiple receivers.  Multicast is
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