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RFC 6659
Title: Considerations for Deploying the Rapid
Acquisition of Multicast RTP Sessions (RAMS)
Method
Author: A. Begen
Status: Informational
Stream: IETF
Date: July 2012
Mailbox: abegen@cisco.com
Pages: 12
Characters: 24234
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-avtext-rams-scenarios-05.txt
URL: http://www.rfc-editor.org/rfc/rfc6659.txt
The Rapid Acquisition of Multicast RTP Sessions (RAMS) solution is a
method based on RTP and the RTP Control Protocol (RTCP) that enables
an RTP receiver to rapidly acquire and start consuming the RTP
multicast data. Upon a request from the RTP receiver, an auxiliary
unicast RTP retransmission session is set up between a retransmission
server and the RTP receiver, over which the reference information
about the new multicast stream the RTP receiver is about to join is
transmitted at an accelerated rate. This often precedes, but may
also accompany, the multicast stream itself. When there is only one
multicast stream to be acquired, the RAMS solution works in a
straightforward manner. However, when there are two or more
multicast streams to be acquired from the same or different multicast
RTP sessions, care should be taken to configure each RAMS session
appropriately. This document provides example scenarios and
discusses how the RAMS solution could be used in such scenarios.
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This document is a product of the Audio/Video Transport Extensions Working Group of the IETF.
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