David, : When I look at the rate my cisco router : reports for a 5min avg and I look at a calculated 5min average (30 polls : of the tc once every 10sec) for tc they are very different. The cisco is : reported as ~2090kb/s and tc reports my parent as ~251kb/s. : Even if I take all the classes separately and add the averages together : I get closer but not that much closer. Is my math wrong? How does the : tc/htb qdisc figure the avg. rate? $ expr 251 \* 8 2008 Snipped from http://www.docum.org/stef.coene/qos/docs/ : "When you use the tc command, you have to remember that mb = 1024 kb = 1024 * 1024 b = byte/s and that mbit = 1024 kbit = 1024 * 1024 bit = bit/s." Snipped from http://lartc.org/howto/lartc.qdisc.html : "Just to prevent confusion, tc uses the following rules for bandwith specification: mbps = 1024 kbps = 1024 * 1024 bps => byte/s mbit = 1024 kbit => kilo bit/s. mb = 1024 kb = 1024 * 1024 b => byte mbit = 1024 kbit => kilo bit.! Are you certain your units are the same? Strangely, the tc command line tool uses kb for kilobytes/second. I think 251 kilobytes-per-second is quite close to 2090 kilobits-per-second. Bye for now, -Martin -- Martin A. Brown --- SecurePipe, Inc. --- mabrown@securepipe.com