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Date:      Sun, 14 Feb 1999 14:55:04
From:      Ross Finlayson <finlayson@live.com>
To:        dmaddox@conterra.com
Cc:        multimedia@FreeBSD.ORG
Subject:   Re: UCL's Universal Transcoding Gateway
Message-ID:  <3.0.5.16.19990214145504.210f3c9c@shell7.ba.best.com>
In-Reply-To: <19990213121112.A23304@dmaddox.conterra.com>
References:  <3.0.5.16.19990212230409.0a2f3962@shell7.ba.best.com> <19990207123933.A3236@dmaddox.conterra.com> <3.0.5.16.19990212230409.0a2f3962@shell7.ba.best.com>

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At 12:11 PM 2/13/99 -0500, you wrote:
>It's not a misconception.  A portion of my available bandwidth is
>wasted by the exchange of routing information, etc. that I don't
>need on a PTP connection.

OK, fair enough.  Of course, *any* tunneling scheme is going to have
overhead, compared to native multicast routing, but maybe you've decided
that the overhead induced by "mrouted" is not worth it.  (However, I've
been using it over a 33.6 modem for more than a year now; sometimes I *do*
notice the effect of route exchanges, but mostly not.)

>UTG also
>works on Win95/98, since the client is Java.  Very nice for those
>of us not connected directly to a multicast router, since there is
>no mrouted for Windows.

I encourage you to also take a look at multikit/liveGate
(<http://www.live.com/>).  This does multikit<->unicast<->multicast
tunneling, rather than just multicast<->unicast, so you can use your
existing multicast applications (except for the session directory) as is.
(OTOH, one potential drawback compared to UTG, is that it doesn't do any
actual 'transcoding' to lower bitrates - instead it copies the UDP data 'as
is'.)

There are pre-built versions of multikit/liveGate for Windows, FreeBSD,
Linux, Solaris and Irix.

	Ross.


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