Multicast Acquisition Report Block Type for RTP Control Protocol (RTCP) Extended Reports (XRs) (RFC6332) (01-Jul-2011)
The RTP Control Protocol (RTCP) is the out-of-band control protocol for applications that use the Real-time Transport Protocol (RTP) for media transport [RFC3550]. In addition to providing minimal control functionality to RTP entities, RTCP also enables a basic-level monitoring of RTP sessions via sender and receiver reports. More statistically detailed monitoring as well as application-specific monitoring are usually achieved through the RTCP Extended Reports (XRs) [RFC3611].
Internet Engineering Task Force (IETF) A. Begen Request for Comments: 6332 E. Friedrich Category: Standards Track Cisco ISSN: 2070-1721 July 2011
Multicast Acquisition Report Block Type for RTP Control Protocol (RTCP) Extended Reports (XRs)
Abstract
In most RTP-based multicast applications, the RTP source sends inter-
related data. Due to this interdependency, randomly joining RTP
receivers usually cannot start consuming the multicast data right
after they join the session. Thus, they often experience a random
acquisition delay. An RTP receiver can use one or more different
approaches to achieve rapid acquisition. Yet, due to various
factors, performance of the rapid acquisition methods usually varies.
Furthermore, in some cases, the RTP receiver can do a simple
multicast join (in other cases, it is compelled to do so). For
quality reporting, monitoring, and diagnostic purposes, it is
important to collect detailed information from the RTP receivers
about their acquisition and presentation experiences. This document
addresses this issue by defining a new report block type, called the
Multicast Acquisition (MA) report block, within the framework of RTP
Control Protocol (RTCP) Extended Reports (XRs) (RFC 3611). This
document also defines the necessary signaling of the new MA report
block type in the Session Description Protocol (SDP).
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/rfc6332.
Begen &
Friedrich Standards Track [Page 1]
RFC 6332 MA Report Block Type for RTCP
XR July 2011
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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 car...
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