System Led; Power Supply Leds; Port Leds And Modes - Cisco Catalyst 9500 Series Hardware Installation Manual

Understanding the LEDs

System LED

The system LED indicates the status of the system.
Table 16: System LED Indicator
Color/State
Off
Green
Amber
Red

Power Supply LEDs

Power supply modules LED
The following description applies only when two power supplies modules are installed in the switch.
Table 17: Power Supply LED Indicators
Color/State
Green
Amber
Red

Port LEDs and Modes

The port LEDs display only the port status.
Table 18: Meaning of Switch LED Colors for Port Status LED
Port LED Color
Off
Green
Alternating green-amber
Description
System is not operational.
System is operating normally without alarms.
System has triggered a minor environmental alarm.
System has triggered a major environmental alarm.
Description
Power supply is operating normally.
One of the PSU has input loss.
One of the PSU has output failure.
Meaning
Link is not up.
Link present.
Link fault. Error frames can affect connectivity, and errors such as
excessive collisions, CRC errors, and alignment and jabber errors are
monitored for a link-fault indication.
Cisco Catalyst 9500X Series Switches Hardware Installation Guide
System LED
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