nanog mailing list archives

RE: IP over in-ground cable applications.


From: "Deepak Jain" <deepak () ai net>
Date: Thu, 12 Sep 2002 15:04:35 -0400



You would need multicast speakers (routers, etc) along the cable route to
effectively multiple your bandwidth at all. Since cable is already
multicasting (1 stream to many/all) I don't think I see any advantage.

Unless, of course, you expect cable customers to be broadcasting to other
cable customers (say their own home video content)... Then MPEG2 Multicast
would be your friend.

Deepak

-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of
Christopher J. Wolff
Sent: Thursday, September 12, 2002 2:34 PM
To: 'Nathan Stratton'
Cc: nanog () merit edu
Subject: RE: IP over in-ground cable applications.



Nathan,

If your MPEG2 video were multicast streams, wouldn't that be a much more
effective utilization of bandwidth?

Regards,
Christopher J. Wolff, CIO
Broadband Laboratories, Inc.
http://www.bblabs.com

-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf Of
Nathan Stratton
Sent: Thursday, September 12, 2002 11:29 AM
To: Christopher J. Wolff
Cc: nanog () merit edu
Subject: Re: IP over in-ground cable applications.



On Thu, 12 Sep 2002, Christopher J. Wolff wrote:

Greetings,

Can anyone recommend a method for integrating TCP/IP with an existing
analog cable television network.   The cable companies do this quite
well; however, it's not immediately clear to me how I would multiplex
the IP traffic and the existing video and deliver it to a home.

Ya, build a new two-way HFC network.

My current thoughts on this are to digitize the satellite video into
mpeg2 and deliver it over TCP/IP through the in-ground cable.  This
way, integrating the video and data portion are easy, however the
resident would need to buy a mpeg2 set-top-box to split out the video
and internet.  Thank you very much for your consideration.

The issue is you only have 125 CMTS channels to deal with and most
network have way to many homes passed per head end to make mpeg2 over IP
practical solution.


<>
Nathan Stratton
nathan at robotics.net
http://www.robotics.net





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