RTP Control Protocol Extension for a Third-Party Loss Report
RFC 6642, “RTP Control Protocol Extension for a Third-Party Loss Report”, is a Proposed Standard document published in June 2012 by Q. Wu, F. Xia, R. Even. The canonical text is published by the RFC Editor.
Abstract
In a large RTP session using the RTP Control Protocol (RTCP) feedback mechanism defined in RFC 4585, a feedback target may experience transient overload if some event causes a large number of receivers to send feedback at once. This overload is usually avoided by ensuring that feedback reports are forwarded to all receivers, allowing them to avoid sending duplicate feedback reports. However, there are cases where it is not recommended to forward feedback reports, and this may allow feedback implosion. This memo discusses these cases and defines a new RTCP Third-Party Loss Report that can be used to inform receivers that the feedback target is aware of some loss event, allowing them to suppress feedback. Associated Session Description Protocol (SDP) signaling is also defined. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 6642 is hosted at rfc-editor.org. Available in TXT,HTML.
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