124 Hardware Overview
Table 3-21 shows the System LED definitions for the N4000 series switches.
Table 3-21. System LED Definitions—N4000 Series Switches
LED Color Definition
System Blinking blue The switch is booting
Solid red A critical system error has occurred.
Blinking red A noncritical system error occurred (fan or power
supply failure).
Temp Off The switch is operating at normal temperature.
Solid amber The thermal sensor’s system temperature threshold of
75°C has been exceeded.
Diag Off The switch is operating normally
Blinking green A diagnostic test is running.
Fan Solid green The fan is powered and is operating at the expected
RPM.
Solid red A fan failure has occurred.
Stack Solid blue The switch is in stacking master mode.
Solid amber The switch is in stacking slave mode.
Off The switch is in stand-alone mode.
Locator Blinking green The locator function is enabled.
Solid green The locator function is disabled.
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