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LEDs
Downlink Port Data LEDs
RJ-45 ports have port LEDs. These LEDs, as a group or individually, provide information about the switch
and about the individual ports.
Color
Off
Green
Blinking green
Blinking green-amber
Amber
Downlink Port PoE LEDs
Color
Off
Green
Blinking amber
Uplink Port Data LEDs
LED Color
Off
Catalyst Digital Building Series Switch Hardware Installation Guide
8
Description
No link or port was administratively shut down.
Link present but is not sending or receiving data.
Activity. Port is sending or receiving data.
Link fault. Error frames can affect connectivity, and errors such as excessive
collisions, CRC errors, and alignment and jabber errors are monitored for link
faults.
Port is blocked by Spanning Tree Protocol (STP) and is not forwarding data.
After a port is reconfigured, the port LED is amber for up to 30 seconds as
STP searches for loops.
Description
PoE is not enabled.
PoE is enabled. Ports are functioning correctly.
• PoE port has been denied power.
• PoE port has a PoE fault.
Description
No link or port was administratively shut down.
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