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Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
OL-17309-02
Chapter 5 Maintaining the Cisco uBR7225VXR Router
Environmental Monitoring and Reporting Functions
• 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. Requires immediate
operator action. Before any shutdown, the system logs the status of monitored parameters in
NVRAM so that you can retrieve it later to help determine the cause of the problem. The power
supply repeatedly attempts to restart itself within 90 seconds to clear the temperature condition.
• Power supply shutdown—The power supply detected an internal out-of-tolerance overvoltage,
overcurrent, or temperature condition and shut itself down. The power supply repeatedly attempts
to restart itself within 90 seconds to clear the shutdown condition.
Table 5-1 lists the temperature thresholds for the processor-monitored levels.
Temperature sensors are located on the NPE Inlet and NPE Outlet. See the appropriate chapter for your
NPE in the Network Processing Engine and Network Services Engine Installation and Configuration
document for their exact locations. Temperature MP NPE Inlet is located on NPE side of the inlet edge
of the midplane. Temperature MP LC Inlet is located on line card side of the inlet edge of the midplane.
Temperature MP NPE is located on NPE side of the middle of the midplane. Temperature MP LC is
located on line card side of the middle of the midplane.
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, it shuts down the system.
The system stores the present parameter measurements for both temperature and DC voltage in NVRAM
so that you can retrieve them later as a report of the last shutdown parameters.
The power supplies monitor internal power supply temperature 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.
Reporting Functions
The Cisco uBR7225VXR router displays 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. Parameters are measured and reporting functions are
updated every 60 seconds. A brief description of each of these commands follows.
Table 5-1 Typical Processor-Monitored Temperature Thresholds for the Cisco uBR7225VXR
Parameter High Warning High Critical Shutdown
NPE Inlet 111
°F (44°C) 138°F (59°C) 176°F (80°C)
NPE Outlet 120
°F (49°C) 147°F (64°C) 183°F (84°C)
MP NPE Inlet 120
°F (49°C) 147°F (64°C) 183°F (84°C)
MP NPE 120
°F (49°C) 147°F (64°C) 183°F (84°C)
MP LC Inlet 105
°F (41°C) 132°F (56°C) 168°F (76°C)
MP LC 107
°F (42°C) 134°F (57°C) 170°F (77°C)