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Catalyst 3750 Switch Hardware Installation Guide
OL-6336-07
Chapter 1 Product Overview
10/100 and 10/100/1000 Ports
System LED
The System LED shows whether the system is receiving power and is functioning properly.
Table 1-1 lists the LED colors and their meanings.
For information on the System LED colors during power-on self-test (POST), see the “Powering On the
Switch and Running POST” section on page 2-7.
RPS LED
The RPS LED shows the RPS status. Table 1-2 lists the LED colors and their meanings. The RPS LED
is not used on the Catalyst 3750G-12S-SD switch.
For more information about the Cisco RPS 2300, see the Cisco Redundant Power System 2300 Hardware
Installation Guide. For more information about the Cisco RPS 675, see the Cisco RPS 675 Redundant
Power System Hardware Installation Guide. These guides are available on Cisco.com.
Table 1-1 System LED
Color System Status
Off System is not powered on.
Green System is operating normally.
Amber System is receiving power but is not functioning properly.
Alternating green and amber
1
1. Applies only to the Catalyst 3750G-24WS-S25 and 3750G-24WS-S50 switches.
Wireless controller is not functioning properly.
Table 1-2 RPS LED
Color RPS Status
Off RPS is off or not properly connected.
Green RPS is connected and ready to provide back-up power, if required.
Flashing green RPS is connected but is unavailable because it is providing power to another device
(redundancy has been allocated to a neighboring device).
Amber The RPS is in standby mode or in a fault condition. Press the Standby/Active button
on the RPS, and the LED should turn green. If it does not, the RPS fan could have
failed. Contact Cisco Systems.
Flashing amber The internal power supply in a switch has failed, and the RPS is providing power
to the switch (redundancy has been allocated to this device).
