draft-ietf-xrblock-rtcp-xr-delay-11.txt   draft-ietf-xrblock-rtcp-xr-delay-12.txt 
Audio/Video Transport Working Group A. Clark Audio/Video Transport Working Group A. Clark
Internet-Draft Telchemy Internet-Draft Telchemy
Intended status: Standards Track K. Gross Intended status: Standards Track K. Gross
Expires: May 20, 2013 AVA Networks Expires: May 23, 2013 AVA Networks
Q. Wu Q. Wu
Huawei Huawei
November 16, 2012 November 19, 2012
RTP Control Protocol (RTCP) Extended Report (XR) Block for Delay metric RTP Control Protocol (RTCP) Extended Report (XR) Block for Delay metric
Reporting Reporting
draft-ietf-xrblock-rtcp-xr-delay-11.txt draft-ietf-xrblock-rtcp-xr-delay-12.txt
Abstract Abstract
This document defines an RTP Control Protocol(RTCP) Extended Report This document defines an RTP Control Protocol(RTCP) Extended Report
(XR) Block that allows the reporting of Delay metrics for use in a (XR) Block that allows the reporting of Delay metrics for use in a
range of Real-time Transport Protocol applications. range of Real-time Transport Protocol applications.
Status of this Memo Status of this Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
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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
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
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 May 20, 2013. This Internet-Draft will expire on May 23, 2013.
Copyright Notice Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the Copyright (c) 2012 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
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5.1. New RTCP XR Block Type value . . . . . . . . . . . . . . . 10 5.1. New RTCP XR Block Type value . . . . . . . . . . . . . . . 10
5.2. New RTCP XR SDP Parameter . . . . . . . . . . . . . . . . 10 5.2. New RTCP XR SDP Parameter . . . . . . . . . . . . . . . . 10
5.3. Contact information for registrations . . . . . . . . . . 10 5.3. Contact information for registrations . . . . . . . . . . 10
6. Security Considerations . . . . . . . . . . . . . . . . . . . 11 6. Security Considerations . . . . . . . . . . . . . . . . . . . 11
7. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 12 7. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 12
8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 13 8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 13
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14 9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
9.1. Normative References . . . . . . . . . . . . . . . . . . . 14 9.1. Normative References . . . . . . . . . . . . . . . . . . . 14
9.2. Informative References . . . . . . . . . . . . . . . . . . 14 9.2. Informative References . . . . . . . . . . . . . . . . . . 14
Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 15 Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 15
A.1. draft-ietf-xrblock-rtcp-xr-delay-11 . . . . . . . . . . . 15 A.1. draft-ietf-xrblock-rtcp-xr-delay-12 . . . . . . . . . . . 15
A.2. draft-ietf-xrblock-rtcp-xr-delay-10 . . . . . . . . . . . 15 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 16
A.3. draft-ietf-xrblock-rtcp-xr-delay-09 . . . . . . . . . . . 15
A.4. draft-ietf-xrblock-rtcp-xr-delay-08 . . . . . . . . . . . 15
A.5. draft-ietf-xrblock-rtcp-xr-delay-07 . . . . . . . . . . . 15
A.6. draft-ietf-xrblock-rtcp-xr-delay-06 . . . . . . . . . . . 15
A.7. draft-ietf-xrblock-rtcp-xr-delay-05 . . . . . . . . . . . 16
A.8. draft-ietf-xrblock-rtcp-xr-delay-04 . . . . . . . . . . . 16
A.9. draft-ietf-xrblock-rtcp-xr-delay-03 . . . . . . . . . . . 16
A.10. draft-ietf-xrblock-rtcp-xr-delay-02 . . . . . . . . . . . 16
A.11. draft-ietf-xrblock-rtcp-xr-delay-01 . . . . . . . . . . . 16
A.12. draft-ietf-xrblock-rtcp-xr-delay-00 . . . . . . . . . . . 16
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 18
1. Introduction 1. Introduction
1.1. Packet Delay Metrics Block 1.1. Packet Delay Metrics Block
This document defines a new block type to augment those defined in This document defines a new block type to augment those defined in
[RFC3611] for use in a range of RTP applications. The new block type [RFC3611] for use in a range of RTP applications. The new block type
supports the reporting of the mean, minimum and maximum values of the supports the reporting of the mean, minimum and maximum values of the
network round-trip delay between RTP interfaces in peer RTP end network round-trip delay between RTP interfaces in peer RTP end
systems as measured, for example, using the RTCP method described in systems as measured, for example, using the RTCP method described in
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I=11: Cumulative Duration - the reported value applies to the I=11: Cumulative Duration - the reported value applies to the
accumulation period characteristic of cumulative measurements. accumulation period characteristic of cumulative measurements.
I=01: Sampled Value - the reported value is a sampled I=01: Sampled Value - the reported value is a sampled
instantaneous value. instantaneous value.
Reserved (resv): 6 bits Reserved (resv): 6 bits
These bits are reserved. They MUST be set to zero by senders and These bits are reserved. They MUST be set to zero by senders and
SHOULD be ignored by receivers (See RFC6709 section 4.2). ignored by receivers (See RFC6709 section 4.2).
block length: 16 bits block length: 16 bits
The length of this report block in 32-bit words, minus one. For The length of this report block in 32-bit words, minus one. For
the Delay block, the block length is equal to 6. the Delay block, the block length is equal to 6.
SSRC of source: 32 bits SSRC of source: 32 bits
As defined in Section 4.1 of [RFC3611]. As defined in Section 4.1 of [RFC3611].
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[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)", November 2003. Protocol Extended Reports (RTCP XR)", November 2003.
[RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session [RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session
Description Protocol", July 2006. Description Protocol", July 2006.
[RFC5905] Mills, D., Martin, J., Burbank, J., and W. Kasch, "Network [RFC5905] Mills, D., Martin, J., Burbank, J., and W. Kasch, "Network
Time Protocol Version 4: Protocol and Algorithms Time Protocol Version 4: Protocol and Algorithms
Specification", RFC 5905, June 2010. Specification", RFC 5905, June 2010.
[RFC6709] Carpenter, B., Aboba, B., and S. Cheshire, "Design
Considerations for Protocol Extensions", RFC 6709,
September 2012.
9.2. Informative References 9.2. Informative References
[MONARCH] Hunt, G., "Monitoring Architectures for RTP", [MONARCH] Hunt, G., "Monitoring Architectures for RTP",
ID draft-ietf-avtcore-monarch-22, September 2012. ID draft-ietf-avtcore-monarch-22, September 2012.
[RFC6390] Clark, A. and B. Claise, "Framework for Performance Metric [RFC6390] Clark, A. and B. Claise, "Framework for Performance Metric
Development", RFC 6390, October 2011. Development", RFC 6390, October 2011.
[RFC6776] Hunt, G., "Measurement Identity and information Reporting [RFC6776] Hunt, G., "Measurement Identity and information Reporting
using SDES item and XR Block", RFC 6776, October 2012. using SDES item and XR Block", RFC 6776, October 2012.
Appendix A. Change Log Appendix A. Change Log
Note to the RFC-Editor: please remove this section prior to Note to the RFC-Editor: please remove this section prior to
publication as an RFC. publication as an RFC.
A.1. draft-ietf-xrblock-rtcp-xr-delay-11 A.1. draft-ietf-xrblock-rtcp-xr-delay-12
The following are the major changes to previous version :
o Editorial changes based on IESG reviews.
A.2. draft-ietf-xrblock-rtcp-xr-delay-10
The following are the major changes to previous version :
o Editorial changes based on SDP directorate Review.
A.3. draft-ietf-xrblock-rtcp-xr-delay-09
The following are the major changes to previous version :
o Editorial changes based on comments that are applied to PDV draft.
A.4. draft-ietf-xrblock-rtcp-xr-delay-08
The following are the major changes to previous version :
o Move Geoff Hunt from author list to Contributors section based on
his suggestion.
A.5. draft-ietf-xrblock-rtcp-xr-delay-07
The following are the major changes to previous version :
o Editorial changes.
o Reference updates.
A.6. draft-ietf-xrblock-rtcp-xr-delay-06
The following are the major changes to previous version :
o Editorial changes.
A.7. draft-ietf-xrblock-rtcp-xr-delay-05
The following are the major changes to previous version :
o One typo fixed.
A.8. draft-ietf-xrblock-rtcp-xr-delay-04
The following are the major changes to previous version :
o Revise the definition of sampled metric to get alignment with
MONARCH.
o Clarify sending the metric block in the same RTCP compound packet
as the measurement information block.
A.9. draft-ietf-xrblock-rtcp-xr-delay-03
The following are the major changes to previous version :
o Allocate 64 bit for end system delay and represent it using 64 bit
NTP-Timestamp.
o Other editorial changes.
A.10. draft-ietf-xrblock-rtcp-xr-delay-02
The following are the major changes to previous version :
o Allocate 32bits for each metrics and change unit for each metric
from ms to 1/65536 seconds.
A.11. draft-ietf-xrblock-rtcp-xr-delay-01
The following are the major changes to previous version :
o Updated references.
o Allocate one more bit for Interval metric flag to indicate sampled
metric can be used.
o add a few clarification text for failure mode.
A.12. draft-ietf-xrblock-rtcp-xr-delay-00
The following are the major changes to previous version : The following are the major changes to previous version :
o Changed BNF for SDP following Christian Groves' and Tom Taylor's o Remove SHOULD from reserved field and add reference to RFC6709.
comments (4th and 5th May 2009).
o Updated references.
Authors' Addresses Authors' Addresses
Alan Clark Alan Clark
Telchemy Incorporated Telchemy Incorporated
2905 Premiere Parkway, Suite 280 2905 Premiere Parkway, Suite 280
Duluth, GA 30097 Duluth, GA 30097
USA USA
Email: alan.d.clark@telchemy.com Email: alan.d.clark@telchemy.com
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