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Catalyst 3560-C and 2960-C Switch Hardware Installation Guide
OL-23803-02
Chapter 1 Product Overview
Front Panel
Modes for Port LEDs
The port LEDs, as a group or individually, display information about the switch and about the individual
ports (
Table 1-5
).
Port LEDs
RJ-45 ports and SFP-module slots have port LEDs. These LEDs, as a group or individually, provide
information about the switch and about the individual ports.
Table 1-6
Modes for Port LEDs
LED
Port Mode
Description
STAT
Port status
The port status. This is the default mode.
DUPLX Port
duplex
status
The port duplex mode: full duplex or half duplex.
SPD
Port speed
The port operating speed: 10, 100, or 1000 Mb/s.
PD
1
1.
Only the Catalyst 2960CPD-8PT-L and 3560PD-8PT-S switches have the PD LED.
Powered device
The status of the uplink port.
PoE
PoE port power
The PoE status.
Table 1-7
Meaning of Port LED Colors
LED Color
Meaning
Off
No link or port was administratively shut down.
Green
Link present but is not sending or receiving data.
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, CRC errors, and alignment and jabber errors are monitored for link
faults.
Amber
Port is blocked by Spanning Tree Protocol (STP) and is not forwarding data.
After a port is reconfigured, the port LED is amber for up to 30 seconds as STP
searches for loops.