[mrtg] Re: Network peak monitoring..

[PAUL WILLIAMSON]

But in what interval?  Top speed of what?

An example...

There are race cars.  All race cars go fast.  I happen to drag 
volkswagen bugs.  I had a race a few weekends ago.  I ran 
a 8.21 ET.  I have a friend that races a 32 Altered.  He was 
at another race, and only ran a 12.1 ET.  His car is way faster 
than mine though. 

The big difference?  He did his time over 1/4 mile, mine was over 1/8 mile.

Sampling interval.  If you are only concerned with the maximum data 
sent over a one hour period, 5 minutes is fairly granular.  If a 5 
minute window is not granular enough, you need to define one.
No, there is no MIB for returning the max amount of data sent 
over x period.  What period of time are you talking about?
1 second bursts?  Your data, while you might think would be fairly 
accurate, would probably be less accurate than a 5 minute window.

If you are thinking about an EKG machine (roughly a heart monitor)
for your network, there are commercial products that do this, but 
in almost all cases, involve some hardware and the ability to span 
the port with which you are interested to accomplish what you 
want to do.

MRTG is not the right tool for this kind of application.

Paul

>>> "Collen Blijenberg <MLHJ>" <systeembeheer at hermanjordan.nl> 06/14/04 02:57AM >>>
Well mrtg updates every 5min, so yeah within the every 5min.
so i would like both average speed in 5min and top-speed in 5min.
isn't there a way to make this happen ??
like an special .MIB file within snmp, or a diff.
way to querty snmp ??

this must be done before i guess, like when you have
a share i-net line and you whish to monitor your top speed.
ea. let say you have a 4mbit line, shared with 10 people..
wouldn't it be nice to know what your top speed's are ??
plus you can see, howmany other users are online..!
-----------------------------------------------------
Collen Blijenberg   (Montessori Lyceum Herman Jordan)

Friday, June 11, 2004, 7:35:33 PM, you wrote:

PW> The highest speed in *what* interval?  Per second, 5 seconds, 
PW> 30 seconds, 1 minute - what?

PW> The highest peak in a 5 minute window is going to be that 
PW> 5 minute window.  Once you get into the consolidation, the 
PW> peak for a 30 minute sampling will be the greatest value in 
PW> the 6 samples within that 30 minute window.  In the 2 hour 
PW> consolidation, the peak will be the greatest of the 4 30 minute 
PW> winners, and in the 1 day consolidation, the peak will be in the 
PW> 12 "winners" for each 2 hour window.

PW> If you increase the polling to per minute, nevermind native MRTG 
PW> can't do it, you'll be able to catch more peaks, but you'll also 
PW> increase the probably for normalization as well as the potential 
PW> for errors and missed polls.

PW> Paul

>>>> "Collen Blijenberg <MLHJ>" <systeembeheer at hermanjordan.nl> 06/11/04 08:08AM >>>
PW> ehh, something like that, but the WithPeak[_] option
PW> is only for [WMY], i like to no what the highest speed
PW> of my nic was every interval (5 min)
PW> -----------------------------------------------------
PW> Collen Blijenberg   (Montessori Lyceum Herman Jordan)

PW> Friday, June 11, 2004, 1:14:28 PM, you wrote:

JC>> Sounds like you want to use the, WithPeak[_] option as described in the
JC>> documentaion that accompanies MRTG

PW> -------------------
JC>> i know mrtg takes a 5 min average of all data trafic on a network
JC>> device..

JC>> but i'm wondering, howto setup mrtg
JC>> to show the highest network transmit
JC>> over 5min... (or more or less)

JC>> is there an howto on that subject.??
JC>> l8r
JC>> ---------------------------------------------
JC>> Collen Blijenberg (Systeem/Netwerk Beheerder)

JC>> Montessori Lyceum
JC>> Herman Jordan
JC>> Zeist

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