[52024] in North American Network Operators' Group
RE: IP over in-ground cable applications.
daemon@ATHENA.MIT.EDU (Deepak Jain)
Thu Sep 12 15:05:49 2002
Reply-To: <deepak@ai.net>
From: "Deepak Jain" <deepak@ai.net>
To: "Christopher J. Wolff" <chris@bblabs.com>,
"'Nathan Stratton'" <nathan@robotics.net>
Cc: <nanog@merit.edu>
Date: Thu, 12 Sep 2002 15:04:35 -0400
In-Reply-To: <004001c25a8a$f69fa700$1809d440@Cartman>
Errors-To: owner-nanog-outgoing@merit.edu
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
>
>
>
