Cisco Catalyst 3560, Hardware Installation Manual

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2-11
Catalyst 3560 Switch Hardware Installation Guide
78-16057-01
Chapter 2 Product Overview
Front Panel Description
Table 2-5 Meaning of Port LED Colors in Different Modes on the Switch
Port Mode LED Color Meaning
PoE Off PoE is off.
If the powered device is receiving power from an AC power
source, the port LED is off even if the powered device is
connected to the switch port.
Green PoE is on. The port LED is green only when the switch port is
providing power.
Alternating
green and
amber PoE is denied because providing power to the powered device will
exceed the 370 W switch power capacity.
Blinking amber PoE is off due to a fault.
Amber PoE for the port has been disabled.
Note PoE is enabled by default.
STAT
(port status) Off No link, or port was administratively shut down.
Green Link present.
Blinking green Activity. Port is transmitting or receiving data.
Alternating
green-amber 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.
Amber Port is blocked by Spanning Tree Protocol (STP) and is not
forwarding data.
Note
After a port is reconfigured, the port LED can remain
amber for up to 30 seconds as STP checks the network
topology for possible loops.
Blinking amber Port is blocked by STP and is not transmitting or receiving
packets.
DUPLX
(duplex) Off Port is operating in half duplex.
Green Port is operating in full duplex.