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Re: IP over in-ground cable applications.

  • From: Marshall Eubanks
  • Date: Thu Sep 12 15:36:14 2002

It is not quite clear to me what you have in mind - do you want to send exclusively IP television over the cable system, or do you want to fit
IP into an existing system ?

Current cable systems have separate parts of the spectrum reserved for analogue or digital television channels and the inbound and outbound IP.
DOCSIS is a standard for sending data over a HFC system - see

http://www.cablemodem.com/

There is lots of hardware for this from different vendors.

If you want a new technology system, I would recommend multicast IP MPEG-2 over EPON - maybe in conjunction with MPLS - see

http://www.iec.org/online/tutorials/epon/topic04.html

If you are interested in setting up these multicasts or for content to put inside of this walled garden, please let me know :)

I do not think that this is really germane to NANOG.

Regards
Marshall Eubanks



Christopher J. Wolff wrote:

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: [email protected] [mailto:[email protected]] On Behalf Of
Nathan Stratton
Sent: Thursday, September 12, 2002 11:29 AM
To: Christopher J. Wolff
Cc: [email protected]
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



--


T.M. Eubanks
Multicast Technologies, Inc.
10301 Democracy Lane, Suite 410
Fairfax, Virginia 22030
Phone : 703-293-9624       Fax     : 703-293-9609
e-mail : [email protected]
http://www.multicasttech.com

Test your network for multicast :
http://www.multicasttech.com/mt/
 Status of Multicast on the Web  :
 http://www.multicasttech.com/status/index.html