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Cisco 7200 VXR Installation and Configuration Guide
OL-5013-08
Chapter 1 Cisco 7200 VXR Product Overview
Functional Overview
Below are sample high critical messages from chassis with 3V and 5V power supplies in
Cisco IOS Release 12.0(23):
Router(boot)#
00:02:47:%ENVM-2-ENVCRIT:+3.45 V measured at +3.72
Router(boot)#
00:06:51:%ENVM-2-ENVCRIT:+5.15 V measured at +5.49
Reporting Functions
The Cisco 7200 VXR routers display 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. Parametersare measuredand reportingfunctions areupdated 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.
Note Also see the NPE-G2 Support for the show environment Command document for information about changes
to the output of the show environment command with the NPE-G2.
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
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 +3.83 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.