Hi,
On Tue, 13 Oct 2009, Joseph Bishay wrote:
> For our LTSP lab I recently purchased two 24 port gigabit netgear
> switches at an amazing price as they were refurbished. The catch is
> of course the warranty is drastically shortened. So far I have
> plugged them in and they are working fine, but I want to conduct a
> more thorough test. Is there a way to test a switch?
I would suggest first making sure you auto-negotiate properly (GigE, Full
Duplex). Ethtool should tell you that.
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.
Gavin
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