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.co...@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/ > -- "Genius might be described as a supreme capacity for getting its possessors into trouble of all kinds." -- Samuel Butler
