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Posted by on August 29, 2006, 4:23 pm
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Al Dykes wrote:
> >>I would like to work out the bandwidth consumption of watching various
> >>video streams on my machine.
> >
> >>I am not sure how best to measure this? Does anyone know if I can get
> >>accurate data from the switch (e.g. via snmp). We have mostly HP switches
> >>and a few Extreme.
> >
> >You can't get accurate data unless you can manage to isolate the entire
> >link from source to destination from all other traffic. If, though,
> >you were to try the monitoring at various times of day, you might
> >get a set of approximations that were close enough for your purposes.
> >
> >What you need is a standard snmp ifInOctets and ifOutOctets monitoring
> >over a time interval. A program such as MRTG can probably set this
> >up for you with little difficulty.
>
>
>
> If you're running XP there is a tool called perfmon that will report
> just about anything your PC is doing.
>
> task manager has a basic network traffic chart.
If you need to isolate particular traffic and not just
monitor the whole of the ethernet port
then you might consider capturing the
traffic with Ethereal and then you can
plot various graphs.
You can capture on the same PC if the traffic
is not too much for it or maybe your network
kit supports "port mirroring" , "span port", "port monitoring"
in which case you can use a seperate PC to capture the traffic.
In ethereal - statistics/io-graphs
then apply filters.
Very nice.
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