Methods to Convey Forward Error Correction (FEC) Framework Configuration Information
RFC 6695

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Internet Engineering Task Force (IETF)                          R. Asati
Request for Comments: 6695                                 Cisco Systems
Category: Informational                                      August 2012
ISSN: 2070-1721

            Methods to Convey Forward Error Correction (FEC)
                  Framework Configuration Information

Abstract

   The Forward Error Correction (FEC) Framework document (RFC 6363)
   defines the FEC Framework Configuration Information necessary for the
   FEC Framework operation.  This document describes how to use
   signaling protocols such as the Session Announcement Protocol (SAP),
   the Session Initiation Protocol (SIP), the Real Time Streaming
   Protocol (RTSP), etc. for determining and communicating the
   configuration information between sender(s) and receiver(s).

   This document doesn't define any new signaling protocol.

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/rfc6695.

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RFC 6695             FEC Framework Config Signaling          August 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.

Table of Contents

   1. Introduction ....................................................2
   2. Specification Language ..........................................3
   3. Terminology/Abbreviations .......................................3
   4. FEC Framework Configuration Information .........................4
      4.1. Encoding Format ............................................5
   5. Signaling Protocol Usage ........................................6
      5.1. Signaling Protocol for Multicasting ........................7
           5.1.1. Sender Procedure ....................................9
           5.1.2. Receiver Procedure .................................11
      5.2. Signaling Protocol for Unicasting .........................12
           5.2.1. SIP ................................................12
           5.2.2. RTSP ...............................................13
   6. Security Considerations ........................................14
   7. IANA Considerations ............................................14
   8. Acknowledgments ................................................14
   9. References .....................................................14
      9.1. Normative References ......................................14
      9.2. Informative References ....................................15

1.  Introduction

   The FEC Framework document [RFC6363] defines the FEC Framework
   Configuration Information that governs the overall FEC Framework
   operation common to any FEC scheme.  This information must be
   available at both the sender and receiver(s).

   This document describes how various signaling protocols such as the
   Session Announcement Protocol (SAP) [RFC2974], the Session Initiation
   Protocol (SIP) [RFC3261], the Real Time Streaming Protocol (RTSP)
   [RFC2326], etc. could be used by the FEC scheme (and/or the Content
   Delivery Protocol (CDP)) to communicate the configuration information

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RFC 6695             FEC Framework Config Signaling          August 2012

   between the sender and receiver(s).  The configuration information
   may be encoded in any compatible format, such as the Session
   Description Protocol (SDP) [RFC4566], XML, etc., though this document
   refers to SDP encoding usage quite extensively.

      Note that this document doesn't define any new signaling protocol;
      rather, it just provides examples of how existing protocols should
      be used.  Also, the list of signaling protocols for unicast is not