Every now and then you’ll have to use this command to verify Power Supply and other system environmental status.
ROUTER#sh environment all
SYSTEM POWER SUPPLY STATUS
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Internal Power Supply 1 Type: AC
Internal Power Supply 1 Input Status and 12V Output Status: FailInternal Power Supply 2 Type: AC
Internal Power Supply 2 12V Output Status: NormalSYSTEM FAN STATUS
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Fan 1 OK, Low speed setting
Fan 2 OK, Low speed setting
Fan 3 OK, Low speed setting
Fan 4 OK, Low speed setting
Fan 5 OK, Low speed settingSYSTEM TEMPERATURE STATUS
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Intake Left temperature: 25 Celsius, Normal
Intake Right temperature: 24 Celsius, Normal
Exhaust Right temperature: 24 Celsius, Normal
Exhaust Left temperature: 26 Celsius, Normal
CPU temperature: 55 Celsius, Normal
Power Supply Unit 2 temperature: 27 Celsius, NormalREAL TIME CLOCK BATTERY STATUS
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Battery OK (checked at power up)SYSTEM POWER
===============
Motherboard Components Power consumption = 100.8 WPower consumption =
NM/SM slot 4 43.1 W
Total System Power consumption is: 143.9 WEnvironmental information last updated 00:00:20 ago