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Cisco 7200 VXR Installation and Configuration Guide
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Chapter 1 Cisco 7200 VXR Product Overview
Functional Overview
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
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.
Following is sample output of the show environment last command:
NPE300(boot)# show environment last
chassis inlet previously measured at 27C/80F
chassis outlet 1 previously measured at 30C/86F
chassis outlet 2 previously measured at 30C/86F
chassis outlet 3 previously measured at 37C/98F
+3.45 V previously measured at +3.46
+5.15 V previously measured at +2.57
+12.15 V previously measured at +6.07
-11.95 V previously measured at -5.97
last shutdown reason - power supply shutdown
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