[mrtg] Re: Maximum Bytes
William.Owen at ProfilesInternational.com
Thu Sep 30 01:28:02 MEST 2004
>From: Alex van den Bogaerdt [mailto:alex at ergens.op.het.net]
>Sent: Wednesday, September 29, 2004 6:03 PM
>To: mrtg at list.ee.ethz.ch
>Subject: [mrtg] Re: Maximum Bytes
>On Wed, Sep 29, 2004 at 11:50:59AM -0400, rglauser at areaofficeonaging.com
>> In a basic MRTG graph, what are the correct settings to measure a 10
>> Base T, 100 Base T and gigabit port on a switch?
> 10,000,000 bits per second -> 1,250,000 bytes per second
> 100,000,000 bits per second -> 12,500,000 bytes per second
>1000,000,000 bits per second -> 125,000,000 bytes per second
>However, to allow for some rounding errors and timing errors I
>usually add some 10 percent.
Another good way to handle the rounding/timing errors is to use the
absmax[target]: setting. I use this a lot to monitor a 2Mbps cable modem.
It is not uncommon to see 110% throughput. I set MaxByte[Cable_1]: 250000
and absmax[Cable_1]: 1300000 so that MRTG will not discard the >100% values,
but will still calculate a percent utilization based on the purchased
bandwidth. If you are getting more than you pay for, it is a good thing to
know (as apposed to n/a's).
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
FAQ http://faq.mrtg.org Homepage http://www.mrtg.org
More information about the mrtg