Chapter 3 Starting and Configuring

Functional Overview

Table 3-1lists the typical temperature thresholds for the Cisco 7401ASR router, and Table 3-2lists the DC power thresholds for the normal, warning, and critical (power supply-monitored) levels.

Table 3-1 Typical Processor-Monitored Temperature Thresholds

Parameter

High Warning

High Critical

Shutdown

 

 

 

 

 

Sensor 1

(near processor)

122oF (50oC)

140oF (60oC)

149oF (65oC)

Sensor 2

(near power supply)

107oF (42oC)

125oF (52oC)

134oF (57oC)

Note Table 3-2shows output from the show environment table command.

Table 3-2 Typical Power Supply-Monitored DC-Voltage Thresholds

Parameter

Low Critical

Low Warning

High Warning

High Critical

 

 

 

 

 

 

+1.8V

(PXF)

+1.61

+1.66

+1.93

+1.98

 

 

 

 

 

 

+1.8V

(CPU)

+1.61

+1.66

+1.93

+1.97

 

 

 

 

 

+2.50V

+2.24

+2.31

+2.68

+2.75

 

 

 

 

 

+3.30V

+2.96

+3.04

+3.54

+3.62

 

 

 

 

 

 

+5.0V

 

+4.50

+4.62

+5.36

+5.50

 

 

 

 

 

+5.20V

+4.68

+4.80

+5.58

+5.72

 

 

 

 

 

+12.25V

+11.03

+11.32

+13.16

+13.49

 

 

 

 

 

–12.00V

–10.82

–11.10

–12.91

–13.20

 

 

 

 

 

 

Reporting Functions

The Cisco 7401ASR router displays warning messages on the console if chassis interface-monitored parameters exceed a desired threshold. You can also retrieve and display environmental status reports with the show environment, show environment all, show environment last, and show environment table commands. Parameters are measured and reporting functions are updated every 60 seconds. A brief description of each of these commands follows.

Caution To prevent overheating the chassis, ensure that your system is drawing cool inlet air. Overtemperature conditions can occur if the system is drawing in the exhaust air of other equipment. Ensure adequate clearance around the sides of the chassis so that cooling air can flow through the chassis interior unimpeded and exhaust air exits the chassis and is not drawn into the inlet vent of another device.

The show environment command displays reports of the current environmental system status. The report displays parameters that are out of the normal values. No parameters are displayed if the system status is normal. The example that follows shows the display for a system in which all monitored parameters are within normal range:

Router# show environment

All measured values are normal

Cisco 7401ASR Installation and Configuration Guide

 

OL-5419-01 B0

3-5

 

 

 

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Cisco Systems 7401ASR manual Reporting Functions, Parameter High Warning High Critical Shutdown, Pxf, Cpu