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UNDERSTANDING LED INDICATORS
The front panel LEDs provides instant status feedback, and helps monitor and
troubleshoot when needed.
Figure 6. LED indicators of the Switch
Power and System LEDs POWER: System Power Indicator
On : When the Power LED lights on, the Switch is receiving power.
Off :
When the Power turns off or the power cord has an improper
connection.
CPU: Management Indicator
Blinking : When the CPU is working, the CPU LED is blinking.
On/Off : The CPU is not working.
Link/ACT: Link/Activity
On : When the Link/ACT LED lights on, the respective port is successfully
connected to an Ethernet network.
Blinking : When the Link/ACT LED is blinking, the port is transmitting or
receiving data on the Ethernet network.
Off : There is no link.