[15239] in North American Network Operators' Group
Re: RA/RV Feeds from RBN
daemon@ATHENA.MIT.EDU (Craig A. Huegen)
Tue Feb 10 16:25:41 1998
Date: Tue, 10 Feb 1998 13:07:38 -0800 (PST)
From: "Craig A. Huegen" <chuegen@quadrunner.com>
To: Jeffrey Payne <jpayne@real.com>
cc: nanog@merit.edu
In-Reply-To: <199802100834.AA08008@murrow.prognet.com>
On Tue, 10 Feb 1998, Jeffrey Payne wrote:
==>I heard lots of questions on multicast today...here's how it works with
==>RealMedia. If you have decent MBONE connectivity, you'll negotiate
==>multicast when you connect to the audio or video stream. If you don't, the
==>client falls back to unicast UDP mode. If even that fails (say you're
==>behind a firewall), it rolls to TCP mode, and will ultimately resort to HTTP
==>"cloaking" if nothing else works. Users can override the automated
==>fall-back through the preferences dialog if there's a strong preference for
==>a particular mode.
The goal here would be to allow other clients to see the session via
traditional multicast tools (i.e., h.261 video and some form of RTP
audio).
/cah
