[70931] in North American Network Operators' Group
RE: [url correction] Cable networks RE: best effort has economic problems, maybe OT
daemon@ATHENA.MIT.EDU (Christopher J. Wolff)
Tue Jun 1 20:55:35 2004
From: "Christopher J. Wolff" <chris@bblabs.com>
To: <nanog@merit.edu>
Date: Mon, 31 May 2004 13:47:43 -0700
In-Reply-To: <200405311958.i4VJwDI30926@atmapp02.siteprotect.com>
Errors-To: owner-nanog-outgoing@merit.edu
All of these are great observations. So what's the cable HFC Achilles heel?
-----Original Message-----
From: frank@dticonsulting.com [mailto:frank@dticonsulting.com]
Sent: Monday, May 31, 2004 12:58 PM
To: nanog@merit.edu; ''Christopher J. Wolff''; frank@dticonsulting.com
Subject: Re: [url correction] Cable networks RE: best effort has economic
problems, maybe OT
Correcting a previous url error on my part.
Narad's site is at:
http://www.naradnetworks.com
Sorry 'bout that, folks.
Frank
On Mon, 31 May 2004 11:30 , <frank@dticonsulting.com> sent:
>
>Agree, this is a great discussion, akin to a recent Cook Report accounting
of
best
>effort considerations. Several startups (now going into year two) have
addressed
>the cable-HF/C constraints you've mentioned. You may be interested in
perusing
>these two:
>
>http://www.narad.com
>
>Another, Rainmaker Technologies...
>
>http://www.rainmakertechnologies.com
>
>.... appears to have fallen on hard times while seeking later round
funding. Not
>sure of their disposition at this time, but doing googles on their name
reveal
>some good articles on their approach to using wavelets to improve bit gain
over
>black coax/fiber systems to homes and businesses.
>
>Metcalfe has financial backing hooks and input into Narad, and Mark E.
Laubach of
>COM21 fame (ATM over HF/C) heads up (headed up?) Rainmaker's technical
pursuits.
>
>[[As an aside, I'm finding increased interest in corporate parks
(especially
those
>that are boondocks-bound) where MSO fiber-based offerings are being
seriously
>considered for WAN access, both of the type discussed above and enterprise-
>tailored rings coming off local head-ends.]]
>
>Frank
>
>
>On Sun, 30 May 2004 08:47 , 'Christopher J. Wolff' chris@bblabs.com> sent:
>
>>
>>Folks,
>>
>>This is a great discussion. I'm interested in understanding these types
of
>>limitations in the context of HFC cable networks. In my opinion, HDTV
>>channel bandwidth (30mhz?) , increased demand for voip, and growing demand
>>for IP connectivity is going to stress the cable network model as well,
>>forcing cable operators to convert everything to IP before going out
across
>>the wire. Any input is appreciated.
>>
>>Regards,
>>Christopher
>>
>
>
>
>
