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Catalyst 2960 Switch Hardware Installation Guide
OL-7075-05
Chapter 1 Product Overview
Front Panel Description
Even if PoE mode is not selected, the PoE LED still shows PoE problems when they are detected.
Table 1-6 lists the PoE mode LED colors and their meanings. The PoE LED applies only to Catalyst 2960
switches that support PoE.
Table 1-5 Meaning of LED Colors in Different Modes on the Switch
Port Mode LED Color Meaning
STAT
(port status)
Off No link, or port was administratively shut down.
Green Link present.
Blinking green Activity. Port is sending or receiving data.
Alternating
green-amber
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.
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 checks the switch for possible loops.
Blinking amber Port is blocked by STP and is sending or receiving packets.
DUPLX
(duplex)
Off Port is operating in half duplex.
Green Port is operating in full duplex.
SPEED
10/100/1000 ports
Off Port is operating at 10 Mb/s.
Green Port is operating at 100 Mb/s.
Blinking green Port is operating at 1000 Mb/s.
SFP module ports
Off Port is operating at 10 Mb/s.
Green Port is operating at 100 Mb/s.
Blinking green Port is operating at 1000 Mb/s.
Note 1000BASE-T SFP modules can operate at 10, 100, or 1000
Mb/s in full-duplex mode or at 10 or 100 Mb/s in half-duplex
mode in the Catalyst 2960 switches.
PoE PoE port power The PoE status.
Table 1-6 PoE Mode LED
Color PoE Status
Off PoE mode is not selected. None of the 10/100 or 10/100/1000 PoE ports have been denied power or are
in a fault condition.
Green PoE mode is selected, and the PoE status is shown on the port LEDs.
Blinking amber PoE mode is not selected. At least one of the 10/100 PoE ports has been denied power, or at least one of
the ports has a PoE fault.