IP over in-ground cable applications.

Thu Sep 12 19:33:58 UTC 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: owner-nanog at merit.edu [mailto:owner-nanog at merit.edu] On Behalf Of
> Nathan Stratton
> Sent: Thursday, September 12, 2002 11:29 AM
> To: Christopher J. Wolff
> Cc: nanog at 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
> 
> 

-- 

T.M. Eubanks
Multicast Technologies, Inc.
10301 Democracy Lane, Suite 410
Fairfax, Virginia 22030
Phone : 703-293-9624       Fax     : 703-293-9609
e-mail : tme at multicasttech.com
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