RTP Control Protocol (RTCP) Extended Report (XR) Block for Burst/Gap Loss Metric Reporting
RFC 6958
Document | Type | RFC - Proposed Standard (May 2013; Errata) | |
---|---|---|---|
Authors | Alan Clark , Sunshine Zhang , Jing Zhao , Qin Wu | ||
Last updated | 2015-10-14 | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6958 (Proposed Standard) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Gonzalo Camarillo | ||
IESG note | Dan Romascanu (dromasca@avaya.com) is the Document Shepherd. | ||
Send notices to | (None) | ||
IANA | IANA review state | IANA OK - Actions Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) A. Clark Request for Comments: 6958 Telchemy Category: Standards Track S. Zhang ISSN: 2070-1721 J. Zhao STTRI Q. Wu, Ed. Huawei May 2013 RTP Control Protocol (RTCP) Extended Report (XR) Block for Burst/Gap Loss Metric Reporting Abstract This document defines an RTP Control Protocol (RTCP) Extended Report (XR) Block that allows the reporting of burst and gap loss metrics for use in a range of RTP applications. 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/rfc6958. Copyright Notice Copyright (c) 2013 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. Clark, et al. Standards Track [Page 1] RFC 6958 RTCP XR Burst/Gap Loss May 2013 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Burst/Gap Loss Metrics Block . . . . . . . . . . . . . . 2 1.2. RTCP and RTCP XR Reports . . . . . . . . . . . . . . . . 3 1.3. Performance Metrics Framework . . . . . . . . . . . . . . 3 1.4. Applicability . . . . . . . . . . . . . . . . . . . . . . 3 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Burst/Gap Loss Metrics Block . . . . . . . . . . . . . . . . 4 3.1. Report Block Structure . . . . . . . . . . . . . . . . . 5 3.2. Definition of Fields in Burst/Gap Loss Metrics Block . . 5 3.3. Derived Metrics Based on Reported Metrics . . . . . . . . 7 4. Considerations for Voice-over-IP Applications . . . . . . . . 8 5. SDP Signaling . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1. SDP rtcp-xr-attrib Attribute Extension . . . . . . . . . 9 5.2. Offer/Answer Usage . . . . . . . . . . . . . . . . . . . 9 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9 6.1. New RTCP XR Block Type Value . . . . . . . . . . . . . . 9 6.2. New RTCP XR SDP Parameter . . . . . . . . . . . . . . . . 9 6.3. Contact Information for Registrations . . . . . . . . . . 10 7. Security Considerations . . . . . . . . . . . . . . . . . . . 10 8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 10 9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10 10. References . . . . . . . . . . . . . . . . . . . . . . . . . 11 10.1. Normative References . . . . . . . . . . . . . . . . . . 11 10.2. Informative References . . . . . . . . . . . . . . . . . 11 Appendix A. Metrics Represented Using the Template from RFC 6390 13 1. Introduction 1.1. Burst/Gap Loss Metrics Block 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 supports the reporting of the proportion of packets lost by the network. The losses during loss bursts are reported, together with the number of bursts and additional data, allowing the calculation of statistical parameters (mean and variance) of the distribution of burst lengths. Some uses of these metrics depend on the availability of the metric "cumulative number of packets lost" from RTCP [RFC3550]. This block provides information on transient IP problems. Burst/gap metrics are typically used in Cumulative reports; however, they also may be used in Interval reports. The burstiness of packet lossShow full document text