Considerations for Deploying the Rapid Acquisition of Multicast RTP Sessions (RAMS) Method
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: RFC Editor <firstname.lastname@example.org>, avtext mailing list <email@example.com>, avtext chair <firstname.lastname@example.org> Subject: Document Action: 'Considerations for Deploying the Rapid Acquisition of Multicast RTP Sessions (RAMS) Method' to Informational RFC (draft-ietf-avtext-rams-scenarios-05.txt) The IESG has approved the following document: - 'Considerations for Deploying the Rapid Acquisition of Multicast RTP Sessions (RAMS) Method' (draft-ietf-avtext-rams-scenarios-05.txt) as Informational RFC This document is the product of the Audio/Video Transport Extensions Working Group. The IESG contact persons are Gonzalo Camarillo and Robert Sparks. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-avtext-rams-scenarios/
Technical Summary The Rapid Acquisition of Multicast RTP Sessions (RAMS) solution is a method based on RTP and 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. Working Group Summary The document is a product of the AVTEXT working group. All controversial issues were issues of the preceding RAMS document already published in RFC 6285, and this document raised no new issues. Document Quality There are existing implementations of RFC 6285. This document merely gives some example scenarios of the usage of RFC 6285. Personnel Keith Drage is the document shepherd. Gonzalo Camarillo is the responsible area director.