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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
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Chapter 1 Cisco ASR 1000 Series Routers Hardware Overview
Functional Overview
The Cisco ASR 1000 Series Routers are expected to meet the following environmental operating
conditions:
•
Operating Temperature Nominal: 5° to 40°C
•
Operating Temperature Short Term: –5° to +55°C (not applicable to the Cisco ASR 1001 Router)
•
Operating Humidity Nominal: 5% to 85% noncondensing
•
Operating Humidity Short Term: 5% to 90% noncondensing (not applicable to the Cisco ASR 1001
Router)
•
Operating Altitude: 198 to 13,200 feet (60 to 4000 meters)
•
DC Input Range: –40.5 to –72 VDC
•
AC Input Range: 85 to 264 VAC
If the air temperature exceeds a defined threshold, the system controller displays warning messages on
the console terminal, and if the temperature exceeds the shutdown threshold, the system controller shuts
down the system.
In addition, the power supplies monitor internal power supply temperatures and voltages. A power
supply is either within tolerance (normal) or out of tolerance (critical). If an internal power supply
temperature or voltage reaches a critical level, the power supply shuts down without any interaction with
the system processor.
The environmental monitoring functions use the following levels of status conditions to monitor the
system:
•
Normal—All monitored parameters are within normal tolerances.
•
Warning—The system has exceeded a specified threshold. The system continues to operate, but
operator action is recommended to bring the system back to a normal state.
•
Critical—An out-of-tolerance temperature or voltage condition exists. The system continues to
operate; however, the system is approaching shutdown. Immediate operator action is required.
•
Shutdown—The processor has detected a temperature condition that could result in physical damage
to system components and has disabled DC power to all internal components. This condition
requires immediate operator action. All DC power remains disabled until you toggle the power
switch. Before any shutdown, the system logs the status of monitored parameters in NVRAM so you
can retrieve it later to help determine the cause of the problem.
•
Power supply shutdown—The power supply detected an internal out-of-tolerance overvoltage,
overcurrent, or temperature condition and shut itself down. All DC power remains disabled until you
toggle the power switch.
Fan Failures
When the system power is on, all fans should be operational. The system continues to operate if a fan
fails. When a fan fails, the system displays the following message:
router: 00:03:46:%ENVM-3-BLOWER:Fan 2 may have failed
If the air temperature exceeds a defined threshold, the system controller displays warning messages on
the console terminal, and if the temperature exceeds the shutdown threshold, the system controller shuts
down the system.
If the system does shut down because the temperature exceeded the shutdown threshold, the system
displays the following message on the console screen and in the environment display when the system
restarts:
