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AppendixA Troubleshooting
Solving Problems at the Component Level
A-2
Cisco MDS 9216 Switch Hardware Installation Guide
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When the initial system boot is complete, verify the following:
•Power supplies are supplying power to the system. See the “Removing and
Installing Power Supplies” section on page2-27.
•The system fan module is operating. See the “Removing and Installing the
Fan Module” section on page2-31.
•The system software boots successfully. Refer to the Cisco MDS 9000 Family
Configuration Guide for information on booting the system and initial
configuration tasks.
•The supervisor module and the switching or services module are installed
correctly and each one initialized without problems. For more information,
see the “Removing and Installing Switching and Services Modules” section
on page 2-22 and the “Verifying Installation of a Switching or Services
Module in Slot 2” section on page2-27.
If each of these conditions is met and the hardware installation is complete, refer
to the Cisco MDS 9000 Family Configuration Guide to troubleshoot the software.
However, if any of these conditions are not met, use the procedures in this
appendix to isolate and, if possible, resolve the problem.
Solving Problems at the 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 separate component in the system.
The Cisco MDS 9216 Switch includes the following subsystems:
•Power supply—The power supply includes the power supply fans.
•Fan module—The fan module should operate whenever system power is on.
You should see the Fan LED turn green and should hear the fan module to
determine whether or not it is operating. If the Fan LED is red, this indicates
that one or more fans in the fan module is not operating. You should
immediately contact your customer service representative (see the
“Contacting Customer Service” section on page A-7). There are no
installation adjustments that you can make if the fan module does not
function properly at initial startup.