5-5
Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide
OL-5421-03
Chapter 5 Maintaining the Cisco uBR7200 Series Router
Environmental Monitoring and Reporting Functions
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 other devices.
The
show environment
command display reports the current environmental status of the system. 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 an
example 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 for a Cisco uBR7246:
Router#
show environment last
Temperature readings:
chassis inlet previously measured at 23C/73F
chassis outlet 1 previously measured at 26C/78F
chassis outlet 2 previously measured at 32C/89F
chassis outlet 3 previously measured at 41C/105F
chassis outlet 4 previously measured at 21C/69F
chassis outlet 5 previously measured at 21C/69F
Voltage readings:
+3.5 V previously measured at +3.57
+5.2 V previously measured at +5.16
+12.2 V previously measured at +12.26
-12.2 V previously measured at -12.41
+16 V previously measured at +17.01
-16 V previously measured at -17.33
Reason for last shutdown:
power supply
Note
The example above is specific to the Cisco uBR7246 and you might notice a difference in the output for
your Cisco uBR7246VXR.
The
show environment table
command displays the temperature and voltage thresholds for each
temperature sensor and for each monitored status level, which are related to those thresholds listed in
Table 5-1
. The display also lists the shutdown threshold for the system. You can abbreviate the command
to
sh env table
.
