nanog mailing list archives

Re: Keeping Track of Data Usage in GB Per Port


From: Joe Hamelin <joe () nethead com>
Date: Wed, 15 Oct 2014 17:43:27 -0700



On 10/15/14, 1:38 PM, "Colton Conor" <colton.conor () gmail com> wrote:

So based on the response I have received so far it seems cable was a
complicated example with service flows involved.


Don't forget that between your port on your DSL/Cable modem and the actual
port they may be monitoring there could be transitions through various
protocols that can chew up bandwidth with framing bits and whatnot.

See: http://www.yourdictionary.com/cell-tax as an example.

This can, in worse but common cases, be as much as one fifth of the
bandwidth.

--
Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474


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