5 – Switch Configuration
Testing a Switch
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Offline Tests for Switches
An offline test is a disruptive test that exercises all port connections for a switch in
the diagnostics state. You must place the switch in the diagnostics state using the
Set Switch State command before starting the test. There are two types of offline
test: internal loopback and external loopback.
îš„ An internal loopback test exercises all internal port connections.
îš„ An external loopback test exercises all internal port and transceiver
connections. A transceiver with a loopback plug is required for all ports.
The following example performs an offline internal loopback test on a switch:
SANbox #> admin start
SANbox (admin) #>set switch state diagnostics
SANbox (admin) #> test switch offline internal
A list of attributes with formatting and current values will follow. Enter a new
value or simply press the ENTER key to accept the default value. If you wish to
terminate this process before reaching the end of the list press 'q' or 'Q' and the
ENTER key to do so.
LoopCount (decimal value, 1-4294967295) [100 ]
FrameSize (decimal value, 40-2148) [256 ]
DataPattern (32-bit hex value or 'Default') [Default]
StopOnError (True / False) [True ]
LoopForever (True / False) [False ]
Do you want to start the test? (y/n) [n] y
When the test is complete, remember to place the switch back online. The switch
resets when it leaves the diagnostics state.
SANbox (admin) #> set switch state online
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