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 Provisions Relating to IETF Documents (https://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. 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 . . . . . . . . . . . . . . . . . . 16Show full document text