DescriptionCommand
Displays temperature readings for card temperature sensors. Each Route Processor, line card, and fabric
cards have temperature sensors with two thresholds:
• 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 Route Processor card with HA-standby or standby
present, only that Route Processor card is shut down and the standby Route Processor card
takes over.
• If you do not have a standby Route Processor card in your router, 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 Route Processor cards.
Note
show environment
temperature
Displays the power usage information for the entire router.show environment power
Displays the voltage for the entire router.show environment
voltage
Displays the current environment status.show environment
current
Displays the status of the fan trays.show environment fan
The following example shows sample output from the show environment command:
=============================================================================================================
Location TEMPERATURE Value Crit Major Minor Minor
Major Crit
Hardware Installation Guide for Cisco 8800 Series Routers
89
Connect Router to the Network
Verify Chassis Installation
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