RFC 5761 - Multiplexing RTP Data and Control Packets on a Single Port

• Status: Proposed Standard
• Published: April 2010
• Stream: IETF
• Updates: RFC 3550, RFC 3551
• Errata: No Errata

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Abstract

This memo discusses issues that arise when multiplexing RTP data packets and RTP Control Protocol (RTCP) packets on a single UDP port. It updates RFC 3550 and RFC 3551 to describe when such multiplexing is and is not appropriate, and it explains how the Session Description Protocol (SDP) can be used to signal multiplexed sessions.

Table of Contents

• 1. Introduction
• 2. Background
• 3. Terminology
• 4. Distinguishable RTP and RTCP Packets
• 5. Multiplexing RTP and RTCP on a Single Port
  • 5.1. Unicast Sessions
    • 5.1.1. SDP Signalling
    • 5.1.2. Interactions with SIP Forking
    • 5.1.3. Interactions with ICE
    • 5.1.4. Interactions with Header Compression
  • 5.2. Any Source Multicast Sessions
  • 5.3. Source-Specific Multicast Sessions
• 6. Multiplexing, Bandwidth, and Quality of Service
• 7. Security Considerations
• 8. IANA Considerations
• 9. Acknowledgements
• 10. References
  • 10.1. Normative References
  • 10.2. Informative References

Status of This Memo

This is an Internet Standards Track document.

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). Further information on Internet Standards is available in 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/rfc5761.

Copyright Notice

Copyright (c) 2010 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.

Authors' Addresses

Colin Perkins University of Glasgow Department of Computing Science Glasgow G12 8QQ UK

EMail: [email protected]

Magnus Westerlund Ericsson Farogatan 6 Stockholm SE-164 80 Sweden

EMail: [email protected]