Internet Society Requests for Comments
A. Begen - Author
Copyright (c) 2012 IETF Trust and the persons identified as the
English (United States)
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Internet Engineering Task Force (IETF) A. Begen Request for Comments: 6659 Cisco Category: Informational July 2012 ISSN: 2070-1721
Considerations for Deploying the Rapid Acquisition of Multicast RTP Sessions (RAMS) Method
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.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for informational purposes.
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). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see 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/rfc6659.
Begen Informational [Page 1]
RFC 6659 RAMS Considerations July 2012
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