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Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0
Chapter3 Starting and Configuring Functional Overview
Table 3 -1 lists the typical temperature thresholds for the Cisco 7401ASR router, and Table 3- 2 lists the
DC power thresholds for the normal, warning, and critical (power supply-monitored) levels.
Note Table 3 -2 shows output from the show environment table comm and.
Reporting Functions
The Cisco 7 401ASR router displays warning me ssages 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 e very 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 syst em st at us. T he
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
Table3-1 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)
Table3-2 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