Link Status
LED Status
Ports
Port Mode
No link, or port was administratively shut down.
Off
STAT (port status)
Link present, no activity.
Green
Activity. Port is sending or receiving data.
Blinking green
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.
Alternating
green-amber
Port is blocked by Spanning Tree Protocol (STP) and
is not forwarding data.
After a port is reconfigured, the port LED can be
amber for up to 30 seconds as STP checks the switch
for possible loops.
Amber
Port is blocked by STP and is sending and receiving
data.
Blinking amber
Port is operating at 10 Mb/s.
Off
10/100/1000
ports
SPEED
Port is operating at 100 Mb/s.
Green
Port is operating at 1000 Mb/s.
Blinking green (on
for 100 ms, off for
1900 ms)
Port is operating at 10 Mb/s.
Off
Uplink ports
with 1G SFP
module
installed
Port is operating at 100 Mb/s.
Green
Port is operating at 1000 Mb/s.
Blinking green
Port is not operating
Off
Uplink ports
with 10G SFP+
module
installed
Port is operating at 10 Gb/s.
Green
Port is operating at 1 Gb/s.
Blinking green
PoE mode is not enabled. None of the 10/100/1000
ports have been denied power or are in a fault
condition.
Off
PoE+
PoE mode is enabled, and the port LED displays green
when the switch port is providing power.
Green
PoE is disabled for the port.
Amber
PoE mode is off due to a fault condition.
Blinking amber
PoE port is denied power because providing power to
the powered device exceeds the switch power capacity.
Alternating green
and amber
Cisco Catalyst 9200CX Compact Series Switches Hardware Installation Guide
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Switch LEDs
Switch LEDs