Considerations for Deploying the Rapid Acquisition of Multicast RTP Sessions (RAMS) Method (RFC6659)

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

Abstract

   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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