To select or change a mode, press the Mode button until the desired mode is highlighted. When you change
port modes, the meanings of the port LED colors also change.
Table 7: Meanings of LED Colors in Different Modes
Meaning
Port LED Color
Port Mode
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.
Off
PoE
PoE is on. The port LED is green only when the switch port is providing
power.
Green
PoE is denied because providing power to the powered device will
exceed the switch power capacity.
Alternating
green and amber
PoE is off due to a fault.
Noncompliant cabling or powered devices can cause a PoE port fault.
Use only standard-compliant cabling to connect Cisco prestandard IP
Phones and wireless access points or IEEE 802.3af-compliant devices.
You must remove any cable or device that causes a PoE fault.
Blinking amber
PoE for the port is disabled. (PoE is enabled by default.)
Amber
No link or port was administratively shut down.
Off
STAT (port
status)
Link present.
Green
Activity. Interface is sending or receiving data.
Blinking green
Link fault. Error frames can affect connectivity, and errors such as
excessive collisions, cyclic redundancy check (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 remain amber for up to
30 seconds as STP searches the switch for possible loops.
Amber
Port is blocked by STP and is sending and receiving packets.
Blinking amber
Catalyst 6800IA Switch Hardware Installation Guide
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OL-30278-02
Product Overview
LEDs
