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Catalyst 3750 Switch Hardware Installation Guide
OL-6336-07
Chapter 1 Product Overview
10/100 and 10/100/1000 Ports
Master LED
The Master LED shows the stack master status. Table 1-2 lists the LED colors and their meanings.
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 that the port LEDs display. Table 1-4 lists the mode LEDs and
their associated port modes and meanings.
Table 1-5 lists the PoE LED colors and their meanings.
Table 1-3 Master LED
Port Mode Description
Off Switch is not the stack master.
Green Switch is the stack master or a standalone switch.
Amber An error occurred when the switch was selecting the stack master switch or a stack error.
Table 1-4 Port Mode LEDs
Mode LED Port Mode Description
STAT Port status The port status. This is the default mode.
DUPLX Port duplex mode The port duplex mode: full duplex or half duplex.
Note The 10/100/1000 ports operate only in full-duplex
mode.
SPEED Port speed The port operating speed: 10, 100, or 1000 Mb/s.
STACK Stack member status
StackWise port status
The stack member status.
The StackWise port status. See the “Stack LED” section on
page 1-20 for more information.
PoE 10/100 and 10/100/1000
PoE port power
The PoE status.
Table 1-5 PoE Mode LED
Color PoE Status
Off PoE mode is not selected. None of the 10/100 or 10/100/1000 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 or 10/100/1000 ports has been
denied power, or at least one of the 10/100 or 10/100/1000 ports has a PoE fault.
