Simplified Multicast Forwarding
RFC 6621
| Document | Type |
RFC - Experimental
(May 2012; Errata)
Was draft-ietf-manet-smf (manet WG)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| 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
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described in the Simplified BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
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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
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