Cisco Nexus 9808 Hardware Installation Manual page 63

Connect Switch to the Network
Command Description
show environment Displays temperature readings for card temperature sensors. Each Supervisor Module, line card, and
temperature fabric cards have temperature sensors with two thresholds:
Note
show environment power Displays the power usage information for the entire switch.
show environment Displays the current environment status.
current
show environment fan Displays the status of the fan trays.
The following example shows sample output from the show environment command:
n9k-184-Man(config)# show environment
Fan:
---------------------------------------------------------------------------
Fan Model Hw Direction Status
---------------------------------------------------------------------------
Fan1(sys_fan1) N9K-C9808-FAN-A 1.0 front-to-back Ok
Fan2(sys_fan2) N9K-C9808-FAN-A 1.0 front-to-back Ok
Fan3(sys_fan3) N9K-C9808-FAN-A 1.0 front-to-back Ok
• Minor temperature threshold – When a minor threshold is exceeded, minor alarm occurs and the
following actions occur for all four sensors:
• Displays system messages
• Sends SNMP notifications (if configured)
• Log environmental alarm event that can be reviewed by running the show alarm command.
• Major temperature threshold – When a major threshold is exceeded, a major alarm occurs and the
following actions occur:
• For sensors 1, 3, and 4 (outlet and on board sensors), the following actions occur:
• Displays system messages.
• Sends SNMP notifications (if configured).
• Logs environmental alarm event that can be reviewed by running the show alarm command.
• For sensor 2 (intake sensor), the following actions occur:
• If the threshold is exceeded in a switching card, only that card is shut down.
• If the threshold exceeds an active Supervisor Module with HA-standby or standby present,
only that Supervisor Module is shut down and the standby Supervisor Module takes over.
• If you do not have a standby Supervisor Module in your switch, you have up to 2 minutes
to decrease the temperature. During this interval, the software monitors the temperature
every 5 seconds and continuously sends system messages as configured.
Cisco recommends that you install dual Supervisor Module.
Cisco Nexus 9808 NX-OS Mode Switch Hardware Installation Guide
Verify Chassis Installation
57