Internet Engineering Task Force (IETF) U. Kozat
Request for Comments: 6801 DOCOMO Innovations
Category: Informational A. Begen
ISSN: 2070-1721 Cisco
November 2012
Pseudo Content Delivery Protocol (CDP) for
Protecting Multiple Source Flows in the
Forward Error Correction (FEC) Framework
Abstract
This document provides a pseudo Content Delivery Protocol (CDP) to
protect multiple source flows with one or more repair flows based on
the Forward Error Correction (FEC) Framework and the Session
Description Protocol (SDP) elements defined for the framework. The
purpose of the document is not to provide a full-fledged protocol but
to show how the defined framework and SDP elements can be combined
together to implement a CDP.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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/rfc6801.
Kozat & Begen Informational [Page 1]RFC 6801 Pseudo CDP for Multiple Source Flows November 2012Copyright Notice
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Table of Contents
1. Introduction ....................................................3
2. Definitions/Abbreviations .......................................3
3. Construction of a Repair Flow from Multiple Source Flows ........3
3.1. Example: Two Source Flows Protected by a Single
Repair Flow ................................................6
4. Reconstruction of Source Flows from Repair Flow(s) ..............9
4.1. Example: Multiple Source Flows Protected by a
Single Repair Flow .........................................9
5. Security Considerations ........................................10
6. Acknowledgments ................................................10
7. Normative References ...........................................11
Kozat & Begen Informational [Page 2]RFC 6801 Pseudo CDP for Multiple Source Flows November 20121. Introduction
The Forward Error Correction (FEC) Framework (described in [RFC6363])
and SDP Elements for FEC Framework (described in [RFC6364]) together
define mechanisms sufficient enough to build an actual Content
Delivery Protocol (CDP) with FEC protection. Methods to convey FEC
Framework Configuration Information (described in [RFC6695]), on the
other hand, provide the signaling protocols that may be used as part
of CDP to communicate FEC-Scheme-Specific Information from FEC sender
to a single as well as multiple FEC receivers. This document
datatracker.ietf.org