draft-ietf-xrblock-rtcp-xr-summary-stat-09.txt   draft-ietf-xrblock-rtcp-xr-summary-stat-10.txt 
Network Working Group G. Zorn Network Working Group G. Zorn
Internet-Draft Network Zen Internet-Draft Network Zen
Intended status: Standards Track R. Schott Intended status: Standards Track R. Schott
Expires: August 26, 2013 Deutsche Telekom Expires: September 23, 2013 Deutsche Telekom
Q. Wu Q. Wu
R. Huang R. Huang
Huawei Huawei
February 22, 2013 March 22, 2013
RTP Control Protocol (RTCP) Extended Report (XR) Blocks for Summary RTP Control Protocol (RTCP) Extended Report (XR) Blocks for Summary
Statistics Metrics Reporting Statistics Metrics Reporting
draft-ietf-xrblock-rtcp-xr-summary-stat-09 draft-ietf-xrblock-rtcp-xr-summary-stat-10
Abstract Abstract
This document defines three RTP Control Protocol (RTCP) Extended This document defines three RTP Control Protocol (RTCP) Extended
Report (XR) Blocks that allow the reporting of loss, duplication and Report (XR) Blocks that allow the reporting of loss, duplication and
discard summary statistics metrics in a range of RTP applications. discard summary statistics metrics in a range of RTP 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
skipping to change at page 1, line 37 skipping to change at page 1, line 37
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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This Internet-Draft will expire on August 26, 2013. This Internet-Draft will expire on September 23, 2013.
Copyright Notice Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
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described in the Simplified BSD License. described in the Simplified BSD License.
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Summary Statistics Metrics . . . . . . . . . . . . . . . . 3 1.1. Summary Statistics Metrics . . . . . . . . . . . . . . . . 4
1.2. RTCP and RTCP XR Reports . . . . . . . . . . . . . . . . . 3 1.2. RTCP and RTCP XR Reports . . . . . . . . . . . . . . . . . 4
1.3. Performance Metrics Framework . . . . . . . . . . . . . . 3 1.3. Performance Metrics Framework . . . . . . . . . . . . . . 4
1.4. Applicability . . . . . . . . . . . . . . . . . . . . . . 3 1.4. Applicability . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1. Standards Language . . . . . . . . . . . . . . . . . . . . 4 2.1. Standards Language . . . . . . . . . . . . . . . . . . . . 5
3. Transport Related End System Metrics . . . . . . . . . . . . . 4 3. Transport Related End System Metrics . . . . . . . . . . . . . 5
3.1. Burst/Gap Loss Summary Statistics Metrics Block . . . . . 4 3.1. Burst/Gap Loss Summary Statistics Metrics Block . . . . . 5
3.1.1. Report Block Structure . . . . . . . . . . . . . . . . 5 3.1.1. Report Block Structure . . . . . . . . . . . . . . . . 6
3.1.2. Definition of Fields in Loss Summary Statistics 3.1.2. Definition of Fields in Loss Summary Statistics
Block . . . . . . . . . . . . . . . . . . . . . . . . 5 Block . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2. Burst/Gap Discard Summary Statistics Metrics Block . . . . 7 3.2. Burst/Gap Discard Summary Statistics Metrics Block . . . . 8
3.2.1. Report Block Structure . . . . . . . . . . . . . . . . 8 3.2.1. Report Block Structure . . . . . . . . . . . . . . . . 9
3.2.2. Definition of Fields in Burst/Gap Discard Summary 3.2.2. Definition of Fields in Burst/Gap Discard Summary
Statistics Block . . . . . . . . . . . . . . . . . . . 8 Statistics Block . . . . . . . . . . . . . . . . . . . 9
4. Application Level Metrics . . . . . . . . . . . . . . . . . . 10 4. Application Level Metrics . . . . . . . . . . . . . . . . . . 11
4.1. Frame Impairment Statistics Summary Metrics Block . . . . 10 4.1. Frame Impairment Statistics Summary Metrics Block . . . . 11
4.1.1. Report Block Structure . . . . . . . . . . . . . . . . 10 4.1.1. Report Block Structure . . . . . . . . . . . . . . . . 11
4.1.2. Definition of Fields in Frame Impairment Summary 4.1.2. Definition of Fields in Frame Impairment Summary
Statistics Block . . . . . . . . . . . . . . . . . . . 11 Statistics Block . . . . . . . . . . . . . . . . . . . 12
5. SDP Signaling . . . . . . . . . . . . . . . . . . . . . . . . 12 5. SDP Signaling . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1. SDP rtcp-xr-attrib Attribute Extension . . . . . . . . . . 12 5.1. SDP rtcp-xr-attrib Attribute Extension . . . . . . . . . . 13
5.2. Offer/Answer Usage . . . . . . . . . . . . . . . . . . . . 13 5.2. Offer/Answer Usage . . . . . . . . . . . . . . . . . . . . 14
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
6.1. New RTCP XR Block Type values . . . . . . . . . . . . . . 13 6.1. New RTCP XR Block Type values . . . . . . . . . . . . . . 14
6.2. New RTCP XR SDP Parameters . . . . . . . . . . . . . . . . 13 6.2. New RTCP XR SDP Parameters . . . . . . . . . . . . . . . . 14
6.3. Contact information for registrations . . . . . . . . . . 14 6.3. Contact information for registrations . . . . . . . . . . 15
7. Security Considerations . . . . . . . . . . . . . . . . . . . 14 7. Security Considerations . . . . . . . . . . . . . . . . . . . 15
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 14 8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 15
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14 9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9.1. Normative References . . . . . . . . . . . . . . . . . . . 14 9.1. Normative References . . . . . . . . . . . . . . . . . . . 15
9.2. Informative References . . . . . . . . . . . . . . . . . . 15 9.2. Informative References . . . . . . . . . . . . . . . . . . 16
Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 15 Appendix A. Metrics represented using RFC6390 Template . . . . . 16
A.1. draft-ietf-xrblock-rtcp-xr-summary-stat-09 . . . . . . . . 15 Appendix B. Change Log . . . . . . . . . . . . . . . . . . . . . 22
A.2. draft-ietf-xrblock-rtcp-xr-summary-stat-08 . . . . . . . . 15 B.1. draft-ietf-xrblock-rtcp-xr-summary-stat-10 . . . . . . . . 22
A.3. draft-ietf-xrblock-rtcp-xr-summary-stat-07 . . . . . . . . 15 B.2. draft-ietf-xrblock-rtcp-xr-summary-stat-09 . . . . . . . . 22
A.4. draft-ietf-xrblock-rtcp-xr-summary-stat-06 . . . . . . . . 16 B.3. draft-ietf-xrblock-rtcp-xr-summary-stat-08 . . . . . . . . 22
A.5. draft-ietf-xrblock-rtcp-xr-summary-stat-05 . . . . . . . . 16 B.4. draft-ietf-xrblock-rtcp-xr-summary-stat-07 . . . . . . . . 22
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 16 B.5. draft-ietf-xrblock-rtcp-xr-summary-stat-06 . . . . . . . . 22
B.6. draft-ietf-xrblock-rtcp-xr-summary-stat-05 . . . . . . . . 22
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 22
1. Introduction 1. Introduction
1.1. Summary Statistics Metrics 1.1. Summary Statistics Metrics
This draft defines three new block types to augment those defined in This draft defines three new block types to augment those defined in
[RFC3611] for use in a range of RTP applications. [RFC3611] for use in a range of RTP applications.
o Burst/Gap Loss Summary Statistics Metrics Block o Burst/Gap Loss Summary Statistics Metrics Block
o Burst/Gap Discard Summary Statistics Metrics Block o Burst/Gap Discard Summary Statistics Metrics Block
skipping to change at page 5, line 6 skipping to change at page 6, line 6
section 4.2). This Metrics Block relies on the measurement period in section 4.2). This Metrics Block relies on the measurement period in
the Measurement Information block indicating the span of the report the Measurement Information block indicating the span of the report
and SHOULD be sent in the same compound RTCP packet as the and SHOULD be sent in the same compound RTCP packet as the
measurement information block. If the measurement period is not measurement information block. If the measurement period is not
received in the same compound RTCP packet as this Metrics Block, this received in the same compound RTCP packet as this Metrics Block, this
metrics block MUST be discarded. metrics block MUST be discarded.
The metrics carried in this Metrics Block provide information The metrics carried in this Metrics Block provide information
relevant to statistical parameters, including burst loss rate, gap relevant to statistical parameters, including burst loss rate, gap
loss rate, burst duration mean, burst duration variance and are loss rate, burst duration mean, burst duration variance and are
calculated at the receiving end of the RTP stream using burst gap measured at the receiving end of the RTP stream using burst gap loss
loss metrics defined in [BGLOSS] and other information which is sent metrics defined in [BGLOSS] and other information which is sent
together with this report block. together with this report block.
3.1.1. Report Block Structure 3.1.1. Report Block Structure
0 1 2 3 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| BT=BGLSS | I | Reserved | block length | | BT=BGLSS | I | Reserved | block length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SSRC of Source | | SSRC of Source |
skipping to change at page 7, line 46 skipping to change at page 8, line 46
3.2. Burst/Gap Discard Summary Statistics Metrics Block 3.2. Burst/Gap Discard Summary Statistics Metrics Block
This Block extends packet loss and discard metrics defined in section This Block extends packet loss and discard metrics defined in section
4.7.1 of RFC3611. The metrics described here are intended to be used 4.7.1 of RFC3611. The metrics described here are intended to be used
as described in this section, in conjunction with information from as described in this section, in conjunction with information from
the Measurement Identity block [RFC6776] (which MUST be present in the Measurement Identity block [RFC6776] (which MUST be present in
the same RTCP packet as the Burst/Gap Discard Summary Statistics the same RTCP packet as the Burst/Gap Discard Summary Statistics
block) . block) .
These metrics provide information relevant to statistical parameters, These metrics provide information relevant to statistical parameters,
including burst discard rate, gap discard rate and are calculated at including burst discard rate, gap discard rate and are measured at
the receiving end of the RTP stream using burst gap discard metrics the receiving end of the RTP stream using burst gap discard metrics
defined in [BGDISCARD] and other information which is sent together defined in [BGDISCARD] and other information which is sent together
with this report block. with this report block.
Instances of this Metrics Block refer by Synchronization source Instances of this Metrics Block refer by Synchronization source
(SSRC) to the separate auxiliary Measurement Information block (SSRC) to the separate auxiliary Measurement Information block
[RFC6776] which describes measurement periods in use (see [RFC6776] [RFC6776] which describes measurement periods in use (see [RFC6776]
section 4.2). This metrics block relies on the measurement period in section 4.2). This metrics block relies on the measurement period in
the Measurement Information block indicating the span of the report the Measurement Information block indicating the span of the report
and SHOULD be sent in the same compound RTCP packet as the and SHOULD be sent in the same compound RTCP packet as the
skipping to change at page 15, line 24 skipping to change at page 16, line 24
November 2003. November 2003.
[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.
[RFC6776] Wu, Q., "Measurement Identity and information Reporting [RFC6776] Wu, Q., "Measurement Identity and information Reporting
using SDES item and XR Block", RFC 6776, August 2012. using SDES item and XR Block", RFC 6776, August 2012.
9.2. Informative References 9.2. Informative References
[RFC6390] Clark, A. and B. Claise, "Guidelines for Considering New
Performance Metric Development", RFC 6390, October 2011.
[RFC6709] Carpenter, B., Aboba, B., and S. Cheshire, "Design [RFC6709] Carpenter, B., Aboba, B., and S. Cheshire, "Design
Considerations for Protocol Extensions", RFC 6709, Considerations for Protocol Extensions", RFC 6709,
September 2012. September 2012.
[RFC6792] Hunt, G., Wu, Q., and P. Arden, "Monitoring Architectures [RFC6792] Hunt, G., Wu, Q., and P. Arden, "Monitoring Architectures
for RTP", RFC 6792, November 2012. for RTP", RFC 6792, November 2012.
Appendix A. Change Log Appendix A. Metrics represented using RFC6390 Template
RFC EDITOR NOTE: please change XXXX in [RFCXXXX] by the new RFC
number, when assigned.
a. Burst Loss Rate Metric
* Metric Name: RTP Burst Loss Rate
* Metric Description: The fraction of packets lost during bursts
since the beginning of reception for RTP traffic.
* Method of Measurement or Calculation: See section 3.1.2, Burst
Loss Rate definition [RFCXXXX].
* Units of Measurement: See section 3.1.2, Burst Loss Rate
definition [RFCXXXX].
* Measurement Point(s) with Potential Measurement Domain: See
section 3.1, 2nd paragraph [RFCXXXX].
* Measurement Timing: See section 3.1, 1st paragraph [RFCXXXX]
for measurement timing and section 3.1.2 paragraph [RFCXXXX]
for Interval Metric flag.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
b. Gap Loss Rate Metric
* Metric Name: RTP Gap Loss Rate
* Metric Description: The fraction of packets lost during gaps
since the beginning of reception for RTP traffic.
* Method of Measurement or Calculation: See section 3.1.2, Gap
Loss Rate definition [RFCXXXX].
* Units of Measurement: See section 3.1.2, Gap Loss Rate
definition [RFCXXXX].
* Measurement Point(s) with Potential Measurement Domain: See
section 3.1, 2nd paragraph [RFCXXXX].
* Measurement Timing: See section 3.1, 1st paragraph [RFCXXXX]
for measurement timing and section 3.1.2 paragraph [RFCXXXX]
for Interval Metric flag.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
c. Burst duration Mean Metric
* Metric Name: RTP Burst duration Mean
* Metric Description: The mean duration of the burst periods
that have occurred since the beginning of reception for RTP
traffic.
* Method of Measurement or Calculation: See section 3.1.2, Burst
Loss Rate definition [RFCXXXX].
* Units of Measurement: This metric is expressed in
milliseconds.
* Measurement Point(s) with Potential Measurement Domain: See
section 3.1, 2nd paragraph [RFCXXXX].
* Measurement Timing: See section 3.1, 1st paragraph [RFCXXXX]
for measurement timing and section 3.1.2 paragraph [RFCXXXX]
for Interval Metric flag.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
d. Burst duration variance Metric
* Metric Name: RTP Burst duration variance
* Metric Description: The variance duration of the burst periods
that have occurred since the beginning of reception for RTP
traffic.
* Method of Measurement or Calculation: See section 4.1.2, Gap
Loss Rate definition [RFCXXXX].
* Units of Measurement: See section 3.1.2, Burst Duration
Variance definition [RFCXXXX].
* Measurement Point(s) with Potential Measurement Domain: See
section 4.1, 2nd paragraph [RFCXXXX].
* Measurement Timing: See section 4.1, 1st paragraph [RFCXXXX]
for measurement timing and section 3.1.2 paragraph [RFCXXXX]
for Interval Metric flag.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
e. Burst Discard metric
* Metric Name: RTP Burst Discard Rate
* Metric Description: The fraction of packets discarded during
bursts since the beginning of reception for RTP traffic.
* Method of Measurement or Calculation: See section 3.2.2, Burst
Discard Rate definition [RFCXXXX].
* Units of Measurement: See section 3.2.2, Burst Discard Rate
definition [RFCXXXX].
* Measurement Point(s) with Potential Measurement Domain: See
section 3.2, 2nd paragraph [RFCXXXX].
* Measurement Timing: See section 3.2, 3rd paragraph [RFCXXXX]
for measurement timing and section 3.1.2 paragraph [RFCXXXX]
for Interval Metric flag.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
f. Gap Discard Rate metric
* Metric Name: RTP Gap Discard Rate
* Metric Description: The fraction of packets discarded during
gaps since the beginning of reception for RTP traffic.
* Method of Measurement or Calculation: See section 3.2.2, Gap
Discard Rate definition [RFCXXXX].
* Units of Measurement: See section 3.2.2, Gap Discard Rate
definition [RFCXXXX].
* Measurement Point(s) with Potential Measurement Domain: See
section 3.2, 2nd paragraph [RFCXXXX].
* Measurement Timing: See section 3.2, 3rd paragraph [RFCXXXX]
for measurement timing and section 3.1.2 paragraph [RFCXXXX]
for Interval Metric flag.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
g. Number of discarded frames metric
* Metric Name: Number of discarded frames in RTP
* Metric Description: Number of frames discarded in a certain
sequence number interval for RTP traffic.
* Method of Measurement or Calculation: See section 4.1.2,
Number of discarded frames definition [RFCXXXX]. This metric
is directly measured and can be inferred from packet(s) that
comprise the frame.
* Units of Measurement: This metric is expressed as 32-bit
unsigned integer value.
* Measurement Point(s) with Potential Measurement Domain: See
section 4.1, 1st paragraph [RFCXXXX].
* Measurement Timing: See section 4.1 [RFCXXXX], Number of
discarded frames definition, this metric relies on sequence
number interval and RTCP RR packet of RFC3550 to determine
measurement timing.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
h. Number of duplicate frames metric
* Metric Name: Number of duplicate frames in RTP
* Metric Description: Number of frames duplicated in a certain
sequence number interval for RTP traffic.
* Method of Measurement or Calculation: See section 4.1.2,
Number of discarded frames definition [RFCXXXX], This metric
is directly measured and can be inferred from packet(s) that
comprise the frame.
* Units of Measurement: This metric is expressed as 32-bit
unsigned integer value.
* Measurement Point(s) with Potential Measurement Domain: See
section 4.1, 1st paragraph [RFCXXXX].
* Measurement Timing: See section 4.1 [RFCXXXX], Number of
duplicate frames definition, this metric relies on sequence
number interval to determine measurement timing.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
i. Number of full lost frames metric
* Metric Name: Number of full lost frames in RTP
* Metric Description: A frame is either split across multiple
RTP packets or carried in only one RTP packet.If the whole
frame or all the packets of the frame is lost, this frame is
regarded as one full_lost_frame.
* Method of Measurement or Calculation: See section 4.1.2,
Number of discarded frames definition [RFCXXXX].
* Units of Measurement: This metric is expressed as 32-bit
unsigned integer value.
* Measurement Point(s) with Potential Measurement Domain: See
section 4.1, 1st paragraph [RFCXXXX].
* Measurement Timing: See section 4.1 [RFCXXXX], Number of full
lost frames definition [RFCXXXX], this metric relies on
sequence number interval to determine measurement timing.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
j. Number of partial lost frames metric
* Metric Name: Number of partial lost frames in RTP
* Metric Description: When a frame is split across multiple RTP
packets and some RTP packets of the frame are lost, this frame
is regarded as one partial_lost_frame.
* Method of Measurement or Calculation: See section 4.1.2,
Number of partial lost frames definition [RFCXXXX].
* Units of Measurement: This metric is expressed as 32-bit
unsigned integer value.
* Measurement Point(s) with Potential Measurement Domain: See
section 4.1, 1st paragraph [RFCXXXX].
* Measurement Timing: See section 4.1 [RFCXXXX], Number of
partial lost frames definition, this metric relies on sequence
number interval to determine measurement timing.
* Use and applications: See section 1.4 [RFCXXXX].
* Reporting model: See RFC3611.
Appendix B. 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-summary-stat-09 B.1. draft-ietf-xrblock-rtcp-xr-summary-stat-10
The following are the major changes compared to 09:
o Add appendix to apply RFC6390 template to metrics in this draft.
B.2. draft-ietf-xrblock-rtcp-xr-summary-stat-09
The following are the major changes compared to 08: The following are the major changes compared to 08:
o Address comments in the IESG Review. o Address comments in the IESG Review.
A.2. draft-ietf-xrblock-rtcp-xr-summary-stat-08 B.3. draft-ietf-xrblock-rtcp-xr-summary-stat-08
The following are the major changes compared to 07: The following are the major changes compared to 07:
o Address comments raised in Sec-DIR review. o Address comments raised in Sec-DIR review.
A.3. draft-ietf-xrblock-rtcp-xr-summary-stat-07 B.4. draft-ietf-xrblock-rtcp-xr-summary-stat-07
The following are the major changes compared to 06: The following are the major changes compared to 06:
o Add comments raised in PM-DIR review by Al. o Add comments raised in PM-DIR review by Al.
A.4. draft-ietf-xrblock-rtcp-xr-summary-stat-06 B.5. draft-ietf-xrblock-rtcp-xr-summary-stat-06
The following are the major changes compared to 05: The following are the major changes compared to 05:
o Move RFC6709 to informative reference. o Move RFC6709 to informative reference.
A.5. draft-ietf-xrblock-rtcp-xr-summary-stat-05 B.6. draft-ietf-xrblock-rtcp-xr-summary-stat-05
The following are the major changes compared to 04: The following are the major changes compared to 04:
o Editorial changes to get in line with Delay and Burst Gap related o Editorial changes to get in line with Delay and Burst Gap related
drafts. drafts.
Authors' Addresses Authors' Addresses
Glen Zorn Glen Zorn
Network Zen Network Zen
227/358 Thanon Sanphawut 227/358 Thanon Sanphawut
 End of changes. 17 change blocks. 
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