New Results in RTP Scalability

Document Type Expired Internet-Draft (avt WG)
Authors Jonathan Rosenberg  , Henning Schulzrinne 
Last updated 1997-12-03
Stream Internet Engineering Task Force (IETF)
Expired & archived
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Recently, a number of problems related to RTP scalability to large multicast groups have been identified. The main problem, congestion of RTCP packets due to near-simultaneous joins, has been resolved in previous work. In this document, we present some additional problems and describe the solutions. In particular, we discuss the problem of BYE floods and premature timeouts. To resolve the BYE flood problem, we propose a BYE reconsideration mechanism. To help alleviate prema- ture timeouts, we propose a reverse timer reconsideration algorithm. Both algorithms are simple, and require minimal state and computa- tion.


Jonathan Rosenberg (
Henning Schulzrinne (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)