nanog mailing list archives
Re: What does 95th %tile mean?
From: Arnold Nipper <arnold () nipper de>
Date: Fri, 20 Apr 2001 15:05:24 +0200
On Thu, Apr 19, 2001 at 05:18:02PM -0700, David Schwartz wrote:
I've looked at other ways and can't find any better. Billing based upon NetFlow, for example, is still statistical sampling since NetFlow loses a percentage of flows. For example, one of my VIP2-50's says:
So did you calculate, how much you are losing. It's less than 1% of a 1% of all flows. That means you catch up more than 99.99% of all flows. Not that bad. Furthermore NetFlow gives you the ability to offer value added (billing) services to your customers. For example ...
368351628 flows exported in 12278484 udp datagrams 33838 flows failed due to lack of export packet 269989 export packets were dropped enqueuing for the RP 108825 export packets were dropped due to IPC rate limiting Billing based upon total bytes transferred tends to create similar problems. Do you bill based upon bytes transferred per day? Per month? If so, it's still statistical sampling if you have some amount of 'paid bandwidth'. And you can't collect this data from interfaces because interface rates include local traffic, which (for example) grossly overbills customers with newsfeeds.
... you may easily deduct News traffic from being billed. BTW: tell me how do you exclude News Traffic if you count the 95th %ile? Billing based upon total bytes transferred is IMHO verfy fair and attractive from the point of a customer's view and tends to be a nightmare from an ISP's pespective especially if you don't just count bytes but are looking at the IP-addresses involved. Maybe a mixture of byte-counting and portspeed would give a fair billing model. BTW that's also the model you pay power for in Germany.
DS
Arnold -- Arnold Nipper / nIPper consulting mailto:arnold () nipper de Heilbronner Str. 34b Phone: +49 700 NIPPER DE D-76131 Karlsruhe Mobile: +49 172 2650958 Germany Fax: +49 180 505255469743
Current thread:
- RE: What does 95th %tile mean?, (continued)
- RE: What does 95th %tile mean? David Schwartz (Apr 19)
- RE: What does 95th %tile mean? Geoff Huston (Apr 19)
- RE: What does 95th %tile mean? Todd Suiter (Apr 19)
- RE: What does 95th %tile mean? Greg A. Woods (Apr 19)
- RE: What does 95th %tile mean? Charles Sprickman (Apr 19)
- RE: What does 95th %tile mean? Greg A. Woods (Apr 19)
- RE: What does 95th %tile mean? David Schwartz (Apr 19)
- Re: What does 95th %tile mean? David P. Maynard (Apr 20)
- Re: What does 95th %tile mean? Adrian Chadd (Apr 20)
- RE: What does 95th %tile mean? Greg A. Woods (Apr 19)
- Re: What does 95th %tile mean? Arnold Nipper (Apr 20)
- Re: What does 95th %tile mean? Alex Rubenstein (Apr 20)
- Re: What does 95th %tile mean? Arnold Nipper (Apr 20)
- Re: What does 95th %tile mean? Greg Maxwell (Apr 20)
- RE: What does 95th %tile mean? David Schwartz (Apr 20)
- Re: What does 95th %tile mean? Shawn McMahon (Apr 21)
- RE: What does 95th %tile mean? David Schwartz (Apr 21)
- RE: What does 95th %tile mean? David Schwartz (Apr 20)
- Re: What does 95th %tile mean? Simon Leinen (Apr 21)
- RE: What does 95th %tile mean? David Schwartz (Apr 21)
- Re: What does 95th %tile mean? Arnold Nipper (Apr 21)