Cisco Catalyst 9400 Series Troubleshooting

Troubleshooting
• About this Section, on page 1
• System Boot Verification, on page 1
• Using LEDs to Identify Startup Problems, on page 2
• System Messages, on page 3
• Troubleshooting with Software , on page 3
• Troubleshooting a Power Supply Module, on page 4
• Troubleshooting the Fan Tray Assembly, on page 7
• Troubleshooting High Temperature Alarms , on page 9
• Troubleshooting the Switching Module, on page 10
• Troubleshooting Supervisor Modules, on page 10
• Contacting the Cisco Technical Assistance Center, on page 14
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.
This chapter covers only the chassis component hardware aspects of troubleshooting. For software configuration
issues, refer to the software configuration guide
Note
System Boot Verification
When the initial system boot is complete, verify the following:
• That the system software boots successfully
Troubleshooting
1

Cisco Catalyst 9400 Series Specifications

General

Series	Catalyst 9400 Series
Form Factor	Rack-mountable
Operating System	Cisco IOS XE
Uplink Options	40G and 100G uplinks
Stacking	Not supported
Layer Support	Layer 2 and Layer 3
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Humidity	5% to 90% noncondensing
Power Supply Options	AC and DC power supplies
Redundancy	Power supply, supervisor engine
Modular Slots	7 or 10
MAC Address Table Size	256, 000
Security Features	ACLs, TrustSec, MACsec
Management	CLI, SNMP, NETCONF, RESTCONF, Cisco DNA Center