Troubleshooting; About This Section; System Boot Verification - Cisco Catalyst 9404R Switch Hardware Installation Manual
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- Installation note (32 pages) ,
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Troubleshooting
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About this Section
This chapter describes how to perform basic troubleshooting on Cisco Catalyst 9400 Series Switches. Problems
with the initial startup are often caused by a switching module that has become dislodged from the backplane
or a power cord that is disconnected from the power supply.
Although temperature conditions above the maximum acceptable level rarely occur at initial startup, some
environmental monitoring functions are included in this chapter because they also monitor power supply
output voltages.
Note
This chapter covers only the chassis component hardware aspects of troubleshooting. For software configuration
issues, refer to the software configuration guide
System Boot Verification
When the initial system boot is complete, verify the following:
• That the system software boots successfully
About this Section, on page 105
System Boot Verification, on page 105
Using LEDs to Identify Startup Problems, on page 106
System Messages, on page 107
Troubleshooting with Software , on page 107
Troubleshooting the Power Supply, on page 107
Troubleshooting the Fan Tray Assembly, on page 109
Troubleshooting High Temperature Alarms , on page 110
Troubleshooting the Switching Module, on page 111
Troubleshooting Supervisor Modules, on page 111
Contacting the Cisco Technical Assistance Center, on page 115
C H A P T E R
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
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105
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- Catalyst 9404R Switch
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Troubleshooting
