I am new to MRTG, and I am trying to compare its results to some

packet traces recorded by Netmetrix. The MRTG graphs sent to me show

"average" and "peak" utilization over a 1-hour period. There are 14

data points - it looks like 1 at the beginning of the hour, 1 at the

end, and 12 in between, so presumably these stats are recorded every 5

minutes.

My question is whether the stats are based on raw data collected

during a 5-minute period or whether MRTG is just recording 1 packet

every 5 minutes. I am assuming that it collects every packet over the

interval, determines the mean and max, and then starts over with a new

5-minute interval. Is this correct? (Netmetrix, when used in

"sampling" mode, actually only records every Nth packet, where N is

configurable and dependent upon the link speed. That's why we use it

in packet mode, where it just records every packet it sees.)

Thanks.