Technical Summary
In a large RTP session using the 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 SDP signalling is also defined.
Working Group Summary
There is strong consensus among an adequate number of WG
participants on this solution.
Document Quality
There are not yet any reported implementations. The document
has had reasonable review.
Personnel
Magnus Westerlund is the document shepherd.
Robert Sparks is the responsible AD