Cisco 3750 - Manual (Page 15)

1-5
Catalyst 3750 Metro Switch Hardware Installation Guide
OL-9160-02
Chapter 1 Product Overview
Front Panel Description
Power LEDs
The switch supports up to two power supplies. The PWR A and PWR B LEDs show the status of the
power supply in power slot A and power slot B, respectively.
Table 1-2 lists the LED colors and their
meanings.
The power LEDs for slot A and slot B work independently of each other.
Master LED
The Master LED is used in stacking. For this product, which does not support stacking, the Master LED
is green.
Port LEDs and Modes
Each RJ-45 port and SFP 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 1-3 lists the mode LEDs and their associated port modes
and meanings.
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.
Table 1-4 explains how to interpret
the port LED colors in different port modes.
Table 1-2 Power LED Status Indicators
Color Status
Off The power supply is not installed.
Green The power supply is connected and operating correctly.
Amber The power supply is installed but is either in a fault condition or is not connected
to a valid input power source.
Table 1-3 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.
SPEED Port speed The port operating speed: 10 or 100 10, 100, or 1000 Mb/s.
STACK Not used.