[TriLUG] cable modem caps locally
Wed, 9 Oct 2002 15:02:13 -0400
Tom is correct, but its not a secret! Do a little digging on the web
and you'll find out that DOCSIS cable modems tftp a configuration file
that tells it, among other things, what the upstream and downstream caps
are. Other QoS type things that determine local priority are also there
in the configuration file. Of course, you aren't supposed to fiddle
with these things and I advise everyone *NOT* to because you most likely
with be caught.
Just an FYI, most, if not all, DOCSIS cable modems can easily handle
10Mbps up and down without breaking a sweat.
> -----Original Message-----
> From: firstname.lastname@example.org
> [mailto:email@example.com] On Behalf Of Tom 'spot' Callaway
> Sent: Wednesday, October 09, 2002 2:10 PM
> To: firstname.lastname@example.org
> Subject: Re: [TriLUG] cable modem caps locally
> On Wed, 2002-10-09 at 13:32, Chris Merrill wrote:
> > James Manning wrote:
> > > thing, but it "feels" (since the speed stayed pretty
> much dead-on
> > > constant) like it's a cap being done at the cable modem itself.
> > Does anyone know if this is the case? I would think that the
> > bandwidth limitations would be enforeced at the
> concentrator locations
> > - to eliminate the temptation to tamper with the modems...
> Its definitely capped locally on the cable modem. Whether or
> not its also capped at the concentrators is anyone's guess.
> If I say too much more, I violate federal law.
> Tom "spot" Callaway <tcallawa(a)redhat*com> Red Hat Sales
> Engineer Sair Linux and GNU Certified Administrator (LCA) Red
> Hat Certified Engineer (RHCE)
> GPG: D786 8B22 D9DB 1F8B 4AB7 448E 3C5E 99AD 9305 4260
> The words and opinions reflected in this message do not
> necessarily reflect those of my employer, Red Hat, and belong
> solely to me.
> "Immature poets borrow, mature poets steal." --- T. S. Eliot
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