Installation guide

Chapter 1 Product Overview
Front-Panel Description
1-20
Catalyst 3500 Series XL Hardware Installation Guide
78-6456-03
Table 1-8 Meaning of LED Colors in Different Modes on the Catalyst 3524-PWR XL Switch
Port Mode LED Color Meaning
STATUS
(port status)
Off No link.
Solid green Link present.
Flashing 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.
Solid amber Port is not forwarding. Port was disabled by management or an
address violation or was blocked by Spanning Tree Protocol (STP).
Note After a port is reconfigured, the port LED can remain
amber for up to 30 seconds as STP checks the switch for
possible loops.
DUPLEX Off Port is operating in half duplex.
Green Port is operating in full duplex.
SPEED
(speed)
10/100 ports
Off Port is operating at 10 Mbps.
Green Port is operating at 100 Mbps.
1000BaseX ports
Off Port is not operating.
Green Port is operating at 1000 Mbps.
LINE PWR
(inline power)
Off Inline power is off.
Green Inline power is on.
If the Cisco IP Phone is receiving power from an AC power source,
the port LED is off even if the IP phone is connected to the switch
port. The LED turns green only when the switch port is providing
power.