draft-ietf-mmusic-mux-exclusive-06.txt   draft-ietf-mmusic-mux-exclusive-07.txt 
Network Working Group C. Holmberg Network Working Group C. Holmberg
Internet-Draft Ericsson Internet-Draft Ericsson
Updates: 5761 (if approved) June 9, 2016 Updates: 5761 (if approved) June 10, 2016
Intended status: Standards Track Intended status: Standards Track
Expires: December 11, 2016 Expires: December 12, 2016
Indicating Exclusive Support of RTP/RTCP Multiplexing using SDP Indicating Exclusive Support of RTP/RTCP Multiplexing using SDP
draft-ietf-mmusic-mux-exclusive-06 draft-ietf-mmusic-mux-exclusive-07
Abstract Abstract
This document defines a new SDP media-level attribute, 'rtcp-mux- This document defines a new SDP media-level attribute, 'rtcp-mux-
only', that can be used by an endpoint to indicate exclusive support only', that can be used by an endpoint to indicate exclusive support
of RTP/RTCP multiplexing. The document also updates RFC 5761, by of RTP/RTCP multiplexing. The document also updates RFC 5761, by
clarifying that an offerer can use a mechanism to indicate that it is clarifying that an offerer can use a mechanism to indicate that it is
not able to send and receive RTCP on separate ports. not able to send and receive RTCP on separate ports.
Status of This Memo Status of This Memo
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Copyright Notice Copyright Notice
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Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. SDP rtcp-mux-only Attribute . . . . . . . . . . . . . . . . . 3 3. SDP rtcp-mux-only Attribute . . . . . . . . . . . . . . . . . 3
4. SDP Offer/Answer Procedures . . . . . . . . . . . . . . . . . 4 4. SDP Offer/Answer Procedures . . . . . . . . . . . . . . . . . 4
4.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 4 4.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.2. Generating the Initial SDP Offer . . . . . . . . . . . . 4 4.2. Generating the Initial SDP Offer . . . . . . . . . . . . 4
4.3. Generating the Answer . . . . . . . . . . . . . . . . . . 5 4.3. Generating the Answer . . . . . . . . . . . . . . . . . . 5
4.4. Offerer Processing of the SDP Answer . . . . . . . . . . 5 4.4. Offerer Processing of the SDP Answer . . . . . . . . . . 5
4.5. Modifying the Session . . . . . . . . . . . . . . . . . . 5 4.5. Modifying the Session . . . . . . . . . . . . . . . . . . 6
5. Update to RFC 5761 . . . . . . . . . . . . . . . . . . . . . 6 5. Update to RFC 5761 . . . . . . . . . . . . . . . . . . . . . 6
5.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 6 5.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.2. Update to 4th paragraph of section 5.1.1 . . . . . . . . 6 5.2. Update to 4th paragraph of section 5.1.1 . . . . . . . . 7
5.3. Update to 2nd paragraph of section 5.1.3 . . . . . . . . 7 5.3. Update to 2nd paragraph of section 5.1.3 . . . . . . . . 7
6. ICE Considerations . . . . . . . . . . . . . . . . . . . . . 8 6. ICE Considerations . . . . . . . . . . . . . . . . . . . . . 8
7. Security Considerations . . . . . . . . . . . . . . . . . . . 8 7. Security Considerations . . . . . . . . . . . . . . . . . . . 8
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 9 9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 9
10. Change Log . . . . . . . . . . . . . . . . . . . . . . . . . 9 10. Change Log . . . . . . . . . . . . . . . . . . . . . . . . . 9
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 10 11. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
11.1. Normative References . . . . . . . . . . . . . . . . . . 10 11.1. Normative References . . . . . . . . . . . . . . . . . . 10
11.2. Informative References . . . . . . . . . . . . . . . . . 11 11.2. Informative References . . . . . . . . . . . . . . . . . 11
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 11 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 11
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This document updates the "Session Description Protocol Parameters" This document updates the "Session Description Protocol Parameters"
registry as specified in Section 8.2.2 of [RFC4566]. Specifically, registry as specified in Section 8.2.2 of [RFC4566]. Specifically,
it adds the SDP 'rtcp-mux-only' attribute to the table for SDP media it adds the SDP 'rtcp-mux-only' attribute to the table for SDP media
level attributes. level attributes.
Attribute name: rtcp-mux-only Attribute name: rtcp-mux-only
Type of attribute: media-level Type of attribute: media-level
Subject to charset: no Subject to charset: no
Purpose: Indicate exclusive support of RTP/RTCP multiplexing Purpose: Indicate exclusive support of RTP/RTCP multiplexing
Appropriate Values: Appropriate Values: N/A
Contact name: Christer Holmberg Contact name: Christer Holmberg (christert.holmberg@ericsson.com)
Mux Category: IDENTICAL Mux Category: IDENTICAL
9. Acknowledgments 9. Acknowledgments
Thanks to Roman Shpount, Paul Kyzivat, Ari Keranen, Bo Burman, Tomas Thanks to Roman Shpount, Paul Kyzivat, Ari Keranen, Bo Burman, Tomas
Frankkila and Martin Thomson for their comments and input on the Frankkila and Martin Thomson for their comments and input on the
document. document.
10. Change Log 10. Change Log
[RFC EDITOR NOTE: Please remove this section when publishing] [RFC EDITOR NOTE: Please remove this section when publishing]
Changes from draft-ietf-mmusic-rtcp-mux-exclusive-06
o - Editorial fix.
o - Addition of pre-RFC5378 disclaimer.
Changes from draft-ietf-mmusic-rtcp-mux-exclusive-05 Changes from draft-ietf-mmusic-rtcp-mux-exclusive-05
o Editorial fix. o Editorial fix.
Changes from draft-ietf-mmusic-rtcp-mux-exclusive-04 Changes from draft-ietf-mmusic-rtcp-mux-exclusive-04
o Changes based on comments from Flemming Andreasen. o Changes based on comments from Flemming Andreasen.
o - Attribute mux category changed to IDENTICAL. o - Attribute mux category changed to IDENTICAL.
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[I-D.ietf-mmusic-sdp-mux-attributes] [I-D.ietf-mmusic-sdp-mux-attributes]
Nandakumar, S., "A Framework for SDP Attributes when Nandakumar, S., "A Framework for SDP Attributes when
Multiplexing", draft-ietf-mmusic-sdp-mux-attributes-12 Multiplexing", draft-ietf-mmusic-sdp-mux-attributes-12
(work in progress), January 2016. (work in progress), January 2016.
[I-D.ietf-mmusic-sdp-bundle-negotiation] [I-D.ietf-mmusic-sdp-bundle-negotiation]
Holmberg, C., Alvestrand, H., and C. Jennings, Holmberg, C., Alvestrand, H., and C. Jennings,
"Negotiating Media Multiplexing Using the Session "Negotiating Media Multiplexing Using the Session
Description Protocol (SDP)", draft-ietf-mmusic-sdp-bundle- Description Protocol (SDP)", draft-ietf-mmusic-sdp-bundle-
negotiation-25 (work in progress), January 2016. negotiation-30 (work in progress), June 2016.
Author's Address Author's Address
Christer Holmberg Christer Holmberg
Ericsson Ericsson
Hirsalantie 11 Hirsalantie 11
Jorvas 02420 Jorvas 02420
Finland Finland
Email: christer.holmberg@ericsson.com Email: christer.holmberg@ericsson.com
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