draft-ietf-avtext-multicast-acq-rtcp-xr-05.txt   draft-ietf-avtext-multicast-acq-rtcp-xr-06.txt 
AVT A. Begen AVT A. Begen
Internet-Draft E. Friedrich Internet-Draft E. Friedrich
Intended status: Standards Track Cisco Intended status: Standards Track Cisco
Expires: November 27, 2011 May 26, 2011 Expires: November 30, 2011 May 29, 2011
Multicast Acquisition Report Block Type for RTP Control Protocol (RTCP) Multicast Acquisition Report Block Type for RTP Control Protocol (RTCP)
Extended Reports (XRs) Extended Reports (XRs)
draft-ietf-avtext-multicast-acq-rtcp-xr-05 draft-ietf-avtext-multicast-acq-rtcp-xr-06
Abstract Abstract
In most RTP-based multicast applications, the RTP source sends inter- In most RTP-based multicast applications, the RTP source sends inter-
related data. Due to this interdependency, randomly joining RTP related data. Due to this interdependency, randomly joining RTP
receivers usually cannot start consuming the multicast data right receivers usually cannot start consuming the multicast data right
after they join the session. Thus, they often experience a random after they join the session. Thus, they often experience a random
acquisition delay. An RTP receiver can use one or more different acquisition delay. An RTP receiver can use one or more different
approaches to achieve rapid acquisition. Yet, due to various approaches to achieve rapid acquisition. Yet, due to various
factors, performance of the rapid acquisition methods usually varies. factors, performance of the rapid acquisition methods usually varies.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
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Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 27, 2011. This Internet-Draft will expire on November 30, 2011.
Copyright Notice Copyright Notice
Copyright (c) 2011 IETF Trust and the persons identified as the Copyright (c) 2011 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect carefully, as they describe your rights and restrictions with respect
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7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15 7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
7.1. RTCP XR Block Type . . . . . . . . . . . . . . . . . . . . 15 7.1. RTCP XR Block Type . . . . . . . . . . . . . . . . . . . . 15
7.2. RTCP XR SDP Parameter . . . . . . . . . . . . . . . . . . 15 7.2. RTCP XR SDP Parameter . . . . . . . . . . . . . . . . . . 15
7.3. Multicast Acquisition Method Registry . . . . . . . . . . 15 7.3. Multicast Acquisition Method Registry . . . . . . . . . . 15
7.4. Multicast Acquisition Report Block TLV Space Registry . . 16 7.4. Multicast Acquisition Report Block TLV Space Registry . . 16
7.5. Multicast Acquisition Status Code Space Registry . . . . . 17 7.5. Multicast Acquisition Status Code Space Registry . . . . . 17
8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 19 8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 19
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 20 9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9.1. Normative References . . . . . . . . . . . . . . . . . . . 20 9.1. Normative References . . . . . . . . . . . . . . . . . . . 20
9.2. Informative References . . . . . . . . . . . . . . . . . . 20 9.2. Informative References . . . . . . . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 22 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 21
1. Introduction 1. Introduction
RTP Control Protocol (RTCP) is the out-of-band control protocol for RTP Control Protocol (RTCP) is the out-of-band control protocol for
the applications that are using the Real-time Transport Protocol the applications that are using the Real-time Transport Protocol
(RTP) for media transport [RFC3550]. In addition to providing (RTP) for media transport [RFC3550]. In addition to providing
minimal control functionality to RTP entities, RTCP also enables a minimal control functionality to RTP entities, RTCP also enables a
basic level monitoring of RTP sessions via sender and receiver basic level monitoring of RTP sessions via sender and receiver
reports. More statistically detailed monitoring as well as reports. More statistically detailed monitoring as well as
application-specific monitoring is usually achieved through the RTCP application-specific monitoring is usually achieved through the RTCP
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Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3550] Schulzrinne, H., Casner, S., Frederick, R., and V. [RFC3550] Schulzrinne, H., Casner, S., Frederick, R., and V.
Jacobson, "RTP: A Transport Protocol for Real-Time Jacobson, "RTP: A Transport Protocol for Real-Time
Applications", STD 64, RFC 3550, July 2003. Applications", STD 64, RFC 3550, July 2003.
[RFC3611] Friedman, T., Caceres, R., and A. Clark, "RTP Control [RFC3611] Friedman, T., Caceres, R., and A. Clark, "RTP Control
Protocol Extended Reports (RTCP XR)", RFC 3611, Protocol Extended Reports (RTCP XR)", RFC 3611,
November 2003. November 2003.
[RFC3376] Cain, B., Deering, S., Kouvelas, I., Fenner, B., and A. [I-D.ietf-avt-rapid-acquisition-for-rtp]
Thyagarajan, "Internet Group Management Protocol, Version Steeg, B., Begen, A., Caenegem, T., and Z. Vax, "Unicast-
3", RFC 3376, October 2002. Based Rapid Acquisition of Multicast RTP Sessions",
draft-ietf-avt-rapid-acquisition-for-rtp-17 (work in
[RFC3810] Vida, R. and L. Costa, "Multicast Listener Discovery progress), November 2010.
Version 2 (MLDv2) for IPv6", RFC 3810, June 2004.
[RFC4604] Holbrook, H., Cain, B., and B. Haberman, "Using Internet
Group Management Protocol Version 3 (IGMPv3) and Multicast
Listener Discovery Protocol Version 2 (MLDv2) for Source-
Specific Multicast", RFC 4604, August 2006.
[RFC4588] Rey, J., Leon, D., Miyazaki, A., Varsa, V., and R.
Hakenberg, "RTP Retransmission Payload Format", RFC 4588,
July 2006.
[RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session [RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session
Description Protocol", RFC 4566, July 2006. Description Protocol", RFC 4566, July 2006.
[RFC5234] Crocker, D. and P. Overell, "Augmented BNF for Syntax [RFC5234] Crocker, D. and P. Overell, "Augmented BNF for Syntax
Specifications: ABNF", STD 68, RFC 5234, January 2008. Specifications: ABNF", STD 68, RFC 5234, January 2008.
[RFC3711] Baugher, M., McGrew, D., Naslund, M., Carrara, E., and K. [RFC3711] Baugher, M., McGrew, D., Naslund, M., Carrara, E., and K.
Norrman, "The Secure Real-time Transport Protocol (SRTP)", Norrman, "The Secure Real-time Transport Protocol (SRTP)",
RFC 3711, March 2004. RFC 3711, March 2004.
9.2. Informative References 9.2. Informative References
[I-D.ietf-avt-rapid-acquisition-for-rtp]
Steeg, B., Begen, A., Caenegem, T., and Z. Vax, "Unicast-
Based Rapid Acquisition of Multicast RTP Sessions",
draft-ietf-avt-rapid-acquisition-for-rtp-17 (work in
progress), November 2010.
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226, IANA Considerations Section in RFCs", BCP 26, RFC 5226,
May 2008. May 2008.
Authors' Addresses Authors' Addresses
Ali Begen Ali Begen
Cisco Cisco
181 Bay Street 181 Bay Street
Toronto, ON M5J 2T3 Toronto, ON M5J 2T3
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