Cisco Catalyst 9800-80 - Wiring the DC Input Power Source

Fan Failures
Four internal fans draw cooling air in through the front of the chassis and across internal components to
maintain an acceptable operating temperature. The fans are located at the rear of the chassis. The fans in the
Cisco Catalyst 9800-80 Wireless Controller are numbered from 0 to 5, right to left.
When the system power is on, all fans should be operational. However, the system continues to operate even
if a fan fails.
Use the show platform hardware slot chassis 1 P2 fan status command to view the status of the fans, for
example:
WLC# show platform hardware slot chassis 1 P2 fan status
Fan group 1 speed: 60%
Fan 0: Normal
Fan 1: Normal
Fan 2: Normal
Fan 3: Normal
Reporting Functions
The chassis manager on the forwarding engine control processor manages the local resources of the forwarding
processor. The Cisco Catalyst 9800-80 Wireless Controller displays warning messages on the console, if the
chassis interface-monitored parameters exceed a threshold. You can also retrieve and display environmental
status reports with the following commands:
• show environment all
• show version
• show inventory
• show platform
• show platform software status control-processor
• show diag
Parameters are measured and reporting functions are updated every 60 seconds. A brief description of each
of these commands follows.
show environment all Command
The show environment all command displays temperature, voltage, fan, and power supply information.
The following is sample output from the show environment all command:
Sensor List: Environmental Monitoring
Sensor Location State Reading
Vin P0 Normal 231 V AC
Iin P0 Normal 2 A
Vout P0 Normal 12 V DC
Iout P0 Normal 31 A
Temp1 P0 Normal 24 Celsius
Temp2 P0 Normal 31 Celsius
Temp3 P0 Normal 37 Celsius
Temp: DMB IN R0 Normal 22 Celsius
Temp: DMB OUT R0 Normal 34 Celsius
Temp: Yoda 0 R0 Normal 47 Celsius
Temp: Yoda 1 R0 Normal 47 Celsius
Temp: CPU Die R0 Normal 50 Celsius
Cisco Catalyst 9800-80 Wireless Controller Hardware Installation Guide
69
Power Up and Initial Configuration
Fan Failures