I know one company in Europe that uses the in + out model. Thomas ----- Original Message ----- From: "Alex Rubenstein" <alex@corp.nac.net> To: <nanog@merit.edu> Sent: Thursday, April 19, 2001 10:09 AM Subject: What does 95th %tile mean?
I've gotten myself into an argument with a provider about the definition of 'industry-standard 95th percentile method.'
To me, this means the following:
a) take the number of bytes xfered over a 5 minute period, and determine rate for both the inbound and outbound. Store this in your favorite data-store.
b) at billing time, presumably on the first of the month or some other monthly increment, take all the samples, sort them from greatest to least, hacking off the top 5% of samples. Actually, this is done twice, once for inbound, once for outbound. Then, take the higher of those two, and multiply it by your favorite $ multiple (ie, $500 per megabit per second, or $1 per kilobit per second, etc).
I think that most people agree with the above; the issue we are running into is one rogue provider who is billing this at in + out, not the greater of in or out.
How is everyone else doing it? Specifically, larger folks (UU, Sprint, CW, Exodus/FGC, GX, Qwest, L3)
Thanks!