Telechat Review of draft-ietf-avtext-rams-scenarios-
|Requested rev.||no specific revision (document currently at 05)|
|Team||Security Area Directorate (secdir)|
|Draft last updated||2012-05-04|
Genart Last Call review of -?? by Vijay Gurbani
Secdir Telechat review of -?? by Alexey Melnikov
I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. 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 document provides example scenarios and discusses how the RAMS solution could be used when there are two or more multicast streams to be acquired from the same or different multicast RTP sessions. The document says that it has no security considerations. While I would agree that it doesn't add new security considerations to the one defined in RFC 6285, I am a bit puzzled why it doesn't say exactly that. RFC 6285 has very extensive Security Considerations.