Cisco Systems 7401ASR

3-6

Cisco 7401ASR Installation and Configuration Guide

OL-5419-01 B0

Chapter3 Starting and Configuring

Functional Overview

If the environmental status is not normal, the system reports the worst-case status level. Following is a

sample overvoltage warning:

Router# show environment

Warning:+3.45 V measured at +3.27 V

The show environment last command retrieves and displays the NVRAM log, which shows the reason

for the last system shutdown (if the shutdown was related to voltage or temperature) and the

environmental status at that time. Air temperature is measured and displayed, and the DC voltage

supplied by the power supply is also displayed.

Following is sample output of the showenvironment last command:

Router# show environment last

chassis inlet previously measured at 30C/86F

chassis outlet 1 previously measured at 28C/82F

chassis outlet 2 previously measured at -1C/31F

chassis outlet 3 previously measured at -1C/31F

+3.45 V previously measured at +3.27

+5.15 V previously measured at +5.01

+12.15 V previously measured at +12.34

-11.95 V previously measured at -12.41

last shutdown reason - power supply shutdown

The show environment table command displays the temperature and voltage thresholds for each

temperature sensor and for each monitored status level. These thresholds are related to those listed in

Table 3 -1 and Tab le 3-2. The display also lists the shutdown threshold for the system.

Following is sample output of the showenvironment table command for a Cisco7401ASR router:

Router# show environment table

Sample Point LowCritical LowWarning HighWarning HighCritical

chassis inlet 40C/104F 50C/122F

chassis outlet 1 43C/109F 53C/127F

chassis outlet 2 75C/167F 75C/167F

chassis outlet 3 50C/122F 60C/140F

+3.45 V +3.26 +3.34 +3.55 +3.63

+5.15 V +4.86 +4.99 +5.31 +5.43

+12.15 V +11.39 +11.67 +12.62 +12.91

-11.95 V -9.52 -10.73 -13.16 -14.38

System shutdown for chassis outlet 1 58C/136F

System shutdown for chassis outlet 3 65C/149F

Note Temperature ranges and values are subject to change.

The show environment all command displays an extended report that includes temperature readings and

voltage readings. The show environment all command also displays a report showing which power

supply slots are occupied and which are empty.

Following is sample output of the show environment all command.

With AC power supply installed:

Router# show environment all

Power Supplies:

Power supply 1 is Internal AC Power Supply. Unit is on.

Power supply 2 is unmeasured.