Multicast Considerations over IEEE 802 Wireless Media
draft-ietf-mboned-ieee802-mcast-problems-12
| Document | Type | Active Internet-Draft (mboned WG) | |
|---|---|---|---|
| Authors | Charles Perkins , Mike McBride , Dorothy Stanley , Warren Kumari , Juan-Carlos Zúñiga | ||
| Last updated | 2020-11-09 (latest revision 2020-10-26) | ||
| Replaces | draft-mcbride-mboned-wifi-mcast-problem-statement, draft-perkins-intarea-multicast-ieee802 | ||
| Stream | IETF | ||
| Intended RFC status | Informational | ||
| Formats | plain text xml pdf htmlized (tools) htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Jake Holland | ||
| Shepherd write-up | Show (last changed 2019-08-24) | ||
| IESG | IESG state | IESG Evaluation::Revised I-D Needed | |
| Consensus Boilerplate | Yes | ||
| Telechat date |
Has 2 DISCUSSes. Has enough positions to pass once DISCUSS positions are resolved. |
||
| Responsible AD | Éric Vyncke | ||
| IESG note | Note that this document is in the OPS area but as Warren Kumari is an author, Éric Vyncke (INT AD but also having worked on a similar document years ago) is the responsible AD. | ||
| Send notices to | Jake Holland <jholland@akamai.com> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
Internet Area C. Perkins
Internet-Draft Blue Meadow Networks
Intended status: Informational M. McBride
Expires: April 29, 2021 Futurewei
D. Stanley
HPE
W. Kumari
Google
JC. Zuniga
SIGFOX
October 26, 2020
Multicast Considerations over IEEE 802 Wireless Media
draft-ietf-mboned-ieee802-mcast-problems-12
Abstract
Well-known issues with multicast have prevented the deployment of
multicast in 802.11 (wifi) and other local-area wireless
environments. This document describes the problems of known
limitations with wireless (primarily 802.11) Layer-2 multicast. Also
described are certain multicast enhancement features that have been
specified by the IETF, and by IEEE 802, for wireless media, as well
as some operational choices that can be taken to improve the
performance of the network. Finally, some recommendations are
provided about the usage and combination of these features and
operational choices.
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
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
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 April 29, 2021.
Perkins, et al. Expires April 29, 2021 [Page 1]
Internet-Draft Multicast Over IEEE 802 Wireless October 2020
Copyright Notice
Copyright (c) 2020 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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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Identified multicast issues . . . . . . . . . . . . . . . . . 5
3.1. Issues at Layer 2 and Below . . . . . . . . . . . . . . . 5
3.1.1. Multicast reliability . . . . . . . . . . . . . . . . 6
3.1.2. Lower and Variable Data Rate . . . . . . . . . . . . 6
3.1.3. Capacity and Impact on Interference . . . . . . . . . 7
3.1.4. Power-save Effects on Multicast . . . . . . . . . . . 7
3.2. Issues at Layer 3 and Above . . . . . . . . . . . . . . . 8
3.2.1. IPv4 issues . . . . . . . . . . . . . . . . . . . . . 8
3.2.2. IPv6 issues . . . . . . . . . . . . . . . . . . . . . 8
3.2.3. MLD issues . . . . . . . . . . . . . . . . . . . . . 9
3.2.4. Spurious Neighbor Discovery . . . . . . . . . . . . . 9
4. Multicast protocol optimizations . . . . . . . . . . . . . . 10
4.1. Proxy ARP in 802.11-2012 . . . . . . . . . . . . . . . . 10
4.2. IPv6 Address Registration and Proxy Neighbor Discovery . 11
4.3. Buffering to Improve Battery Life . . . . . . . . . . . . 12
4.4. Limiting multicast buffer hardware queue depth . . . . . 13
4.5. IPv6 support in 802.11-2012 . . . . . . . . . . . . . . . 13
4.6. Using Unicast Instead of Multicast . . . . . . . . . . . 14
4.6.1. Overview . . . . . . . . . . . . . . . . . . . . . . 14
4.6.2. Layer 2 Conversion to Unicast . . . . . . . . . . . . 14
4.6.3. Directed Multicast Service (DMS) . . . . . . . . . . 14
4.6.4. Automatic Multicast Tunneling (AMT) . . . . . . . . . 15
4.7. GroupCast with Retries (GCR) . . . . . . . . . . . . . . 15
5. Operational optimizations . . . . . . . . . . . . . . . . . . 16
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