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Chapter 5 Troubleshooting the Installation
Getting Started
5-2
Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide
78-6286-05
Getting Started
When the initial system boot is complete, verify the following:
• Power supplies are supplying power to the system.
• On Catalyst 2948G and 2980G switches, the system fan assembly is
operating.
• On Catalyst 2948G-GE-TX switches, the blower is operating.
If all of these conditions are met and the hardware installation is complete, refer
to the software configuration guide and the command reference for your switch to
troubleshoot the software. However, if any of these conditions is not met, use the
procedures in this chapter to isolate and, if possible, resolve the problem.
Problem Solving to the System Component Level
The key to success when troubleshooting the system is to isolate the problem to a
specific system component. The first step is to compare what the system is doing
to what it should be doing. Because a startup problem can usually be attributed to
a single component, it is more efficient to isolate the problem to a subsystem
rather than troubleshoot each component in the system separately.
The switch consists of the following subsystems:
• Power supply—Includes the power supplies and power supply fans (see
“Troubleshooting the Power Supply” section on page 5-4)
• Fans—The fan assembly should operate whenever system power is on. The
fan assembly continues to operate even when the environmental monitor
shuts the system down because of an overtemperature or overvoltage
condition (although it will shut down in the event of a power supply
shutdown).
The following are simple checks you can make to determine if there is a fan
problem:
• Determine if the software is reporting a temperature problem.
• Listen to the fan assembly to determine if it is operating.
• Check for any obstructions that might be restricting the airflow through the
switch.