Gavin McCullagh schrieb:
> iPerf is a good tool for testing capacity and stressing things a little.
> You can install it on two machines and put the switch in between them.  On
> machine1 run:
> 
>       iperf -s 
> 
> to setup a server and on machine2 run 
> 
>       iperf -c machine1
> 
> to get a client to connect to the server.  By default it'll do a 10 second
> TCP test.  You might want to use '-t 60' in the latter command to extend
> the test to 60 seconds.  If you want to see what's going on, add '-i 1' to
> get ongoing output every second.
> 
> You can also do bidirectional tests (probably worthwhile, you should be
> able to get GigE both ways at once) and you can also do UDP tests where you
> specify the bandwidth that should iperf should send at (whereas TCP will
> send as fast as it can without losing packets). You can also run several
> streams simultaneously. Look at the man page for more.

That's exacty what i would do.
Connect a few clients, then run a bidirectional TCP iperf between each
of them for a few hours (overnight?)

On one end
 iperf -s
On the other
 iperf -c IPADDRESS --dualtest -t 360000 -i 10 -w 512k -l 512k

Take a look at the troughput you get (should be ~ 1GBit in both
directions when the client is fast enough), if it's the same after a few
hours i would consider the switch good (transmission errors / packet
loss would automatically lower the troughput)

Jakob

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