Master Led; Port Leds And Modes - Cisco Catalyst 3750 Hardware Installation Manual

10/100 and 10/100/1000 Ports

Master LED

The Master LED shows the stack master status.
Table 1-4
Port Mode
Off
Green
Amber

Port LEDs and Modes

Each RJ-45 port, SFP module slot, and XENPAK module slot has a port LED. These port LEDs, as a
group or individually, display information about the switch and about the individual ports. The port
modes determine the type of information displayed through the port LEDs.
LEDs and their associated port mode and meaning.
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.
the port LED colors in different port modes.
If your switches are stacked and you press the Mode button on any one of the switches in the stack, all
the switches in the stack change to display the same selected mode. For example, if you press the mode
button on the stack master to display SPEED, all the other switches in the stack also display SPEED.
Table 1-5
Mode LED
STAT
DUPLX
SPEED
STACK
PoE
The PoE LED is on the Catalyst 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS, 3750G-24WS-S25
and 3750G-24WS-S50 switches. Even if PoE mode is not selected on the switches, this LED still shows
PoE problems if they are detected. The Catalyst 3750G-S-SD does not have a PoE LED.
Catalyst 3750 Switch Hardware Installation Guide
1-18
Master LED
Description
Switch is not the stack master.
Switch is the stack master or a standalone switch.
An error occurred when the switch was selecting the stack master
switch or a stack error.
Port Mode LEDs
Port Mode
Port status
Port duplex mode
Port speed
Stack member status
StackWise port status
10/100 and 10/100/1000
PoE port power
Table 1-3 lists the LED colors and their meanings.
Table 1-7
Description
The port status. This is the default mode.
The port duplex mode: full duplex or half duplex.
Note The 10/100/1000 ports operate only in full-duplex
mode.
The port operating speed: 10, 100, or 1000 Mbps.
The stack member status.
The StackWise port status. See the
page 1-20 for more information.
The PoE status.
Chapter 1 Product Overview
Table 1-5 lists the mode
explains how to interpret
"Stack LED" section on
OL-6336-06