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Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide
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Chapter5 Troubleshooting the Instal la tion Identifying Startup Problems
If you encounter a problem in performing any of the above checks, you should
contact a customer service representative.
Identifying Startup Problems
LEDs indicate all system states in the startup sequence. By checking the LEDs,
you can determine when and where the system failed in the startup sequence. If
you have problems after the switch is powered on and the startup sequence is
complete, refer to the software configuration guide for your switch.
After you connect the power cord to the Catalyst 2948G, 2948G-GE -T X,
or 29 80G switche s, follow these steps:
Step1 You should immediately hear the system fans begin to operate. If you do not, see
the “Troubleshooting the Power Supply” section on page 5-4. If you determine
that the power supplies are functioning normally and that the fans are faulty,
contact a customer service representative.
Step2 Check the power supply LEDs as follows:
•The power supply LED should turn green immediately when power is applied
to the switch. The LED should remain on during normal s ystem operation.
•If the LED turns amber, see the section, “Troubleshooting the Power Supply”
section on page 5-4.
Step3 Check that the LEDs on the front panel light as follows:
•The STATUS LED flashes amber once and stays amber during diagnostic
boot tests. It turns green when the switch is operational (on line). If the
system software is unable to start up, this LED stays amber.
•The Link LED flashes amber once after diagnostic boot tests, and turns gre en
when the module is operational (on line). If no signal is detected, the Link
LED turns off. The Link LED blinks amber continuously if the port is bad.
Note After the diagnostic boot tests, the single flash of amber on the Link LED
may occur too quickly to be detected visually.
•If a STATUS LED is red or amber, contact a customer service representative
for instructions.