Keeping Track of Data Usage in GB Per Port

Thu Oct 16 01:20:18 UTC 2014

IPDR under DOCSIS and generally RADIUS or TACACS(+) for DSL. Unclear
personally about fiber/FiOS deployments (never been near enough to know)

Flow (sflow, nflow, ipfix, etc) generally doesn't scale and is woefully
inaccurate.

On Wednesday, October 15, 2014, Colton Conor <colton.conor at gmail.com> wrote:

> I see in past news articles that cable companies are inaccurately
> calculating customers data usage for their online GB of usage per month. My
> question is how do you properly determine how much traffic in bytes a port
> passes per month? Is it different if we are talking about an ethernet port
> on a cisco switch vs a DSL port on a DSLAM for example? I would think these
> access switches would have some sort of stat you can count similar to a
> utility meter reader on a house. See what it was at last month, see what is
> is at this month, subtract last months from this months, and the difference
> is the total amount used for that month.
>
> Why are the cable companies having such a hard time? Is it hard to
> calculate data usage per port? Is it done with SNMP or some other method?
>
> What is the best way to monitor a 48 port switch for example, and know how
> much traffic they used?
>
>
> https://gigaom.com/2013/02/07/more-bad-news-about-broadband-caps-many-meters-are-inaccurate/
>

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