Simplified Multicast Forwarding
RFC 6621
Document | Type |
RFC - Experimental
(May 2012; Errata)
Was draft-ietf-manet-smf (manet WG)
|
|
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Author | Joseph Macker | ||
Last updated | 2020-01-21 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6621 (Experimental) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Adrian Farrel | ||
IESG note | Stan Ratliff (sratliff@cisco.com) is the document shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) J. Macker, Ed. Request for Comments: 6621 NRL Category: Experimental May 2012 ISSN: 2070-1721 Simplified Multicast Forwarding Abstract This document describes a Simplified Multicast Forwarding (SMF) mechanism that provides basic Internet Protocol (IP) multicast forwarding suitable for limited wireless mesh and mobile ad hoc network (MANET) use. It is mainly applicable in situations where efficient flooding represents an acceptable engineering design trade- off. It defines techniques for multicast duplicate packet detection (DPD), to be applied in the forwarding process, for both IPv4 and IPv6 protocol use. This document also specifies optional mechanisms for using reduced relay sets to achieve more efficient multicast data distribution within a mesh topology as compared to Classic Flooding. Interactions with other protocols, such as use of information provided by concurrently running unicast routing protocols or interaction with other multicast protocols, as well as multiple deployment approaches are also described. Distributed algorithms for selecting reduced relay sets and related discussion are provided in the appendices. Basic issues relating to the operation of multicast MANET border routers are discussed, but ongoing work remains in this area and is beyond the scope of this document. Status of This Memo This document is not an Internet Standards Track specification; it is published for examination, experimental implementation, and evaluation. This document defines an Experimental Protocol for the Internet community. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6621. Macker Experimental [Page 1] RFC 6621 SMF May 2012 Copyright Notice Copyright (c) 2012 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 (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. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Table of Contents 1. Introduction and Scope ..........................................4 2. Terminology .....................................................4 3. Applicability Statement .........................................5 4. Overview and Functioning ........................................6 5. SMF Packet Processing and Forwarding ............................8 6. SMF Duplicate Packet Detection .................................10 6.1. IPv6 Duplicate Packet Detection ...........................11 6.1.1. IPv6 SMF_DPD Option Header .........................12 6.1.2. IPv6 Identification-Based DPD ......................14 6.1.3. IPv6 Hash-Based DPD ................................16 6.2. IPv4 Duplicate Packet Detection ...........................17 6.2.1. IPv4 Identification-Based DPD ......................18 6.2.2. IPv4 Hash-Based DPD ................................19 7. Relay Set Selection ............................................20 7.1. Non-Reduced Relay Set Forwarding ..........................20Show full document text