The switch provides a facility for running normal or extended diagnostics.
In simple terms, a normal routine performs a simple ASIC and packet loopback test on all ports, and an extended routine performs extensive ASIC, ASIC-memory, and packet loopback tests. By running and viewing the results from diagnostic tests, you can detect and troubleshoot any hardware issues.
On ExtremeSwitching series switches, you run the diagnostic routine on the switch or on the stacking ports. Running the switch or stacking port diagnostic routine affects system operation; the switch is unavailable during the diagnostic test.
NoteBefore running diagnostics, you must power on the External Power Supply (EPS) when it is connected to the switch.
When you run diagnostics on the SummitStack stacking ports, the switch completes a hardware test to ensure that the stacking ports are operational.
NoteThe ExtremeSwitching X435, X465, X590, X695 series switches do not include the diagnostic image in the main ExtremeXOS core software image (.xos). Instead, they have a separate diagnostic image that is upgraded using an XMOD file. For information about how to install an XMOD file, see Installing a Modular Software Package.