Environmental Monitoring - Cisco 7246 - uBR Router Hardware Installation Manual

Chapter 5 Maintaining the Cisco uBR7200 Series Router

Environmental Monitoring

The environmental monitoring functions use the following five levels of status conditions to monitor the
system. Four sensors, two on the network processing engine and two on the I/O controller, monitor the
temperature of the cooling air as it moves through the chassis.
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Table 5-1
Table 5-1
Parameter
Chassis inlet
Chassis outlet 1
Chassis outlet 2
Chassis outlet 3
Chassis outlet 4
Chassis outlet 5
Temperature outlets 1 through 3 on both platforms are located on the NPE. See the appropriate chapter
for your NPE in the
Configuration
Cisco uBR7246VXR are located on individual fans in the fan tray—each sensor is taped to one of the
individual fan assemblies in the fan tray.
The exact location of these sensors can vary from one fan tray to another, but
typical location of each sensor. You can identify the sensor by looking for a small strip of metal that is
taped to one of the fan assemblies.
OL-5421-03
Normal—All monitored parameters are within normal tolerances.
Warning—The system has exceeded a specified threshold. The system continues to operate, but we
recommend operator action 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. 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.
lists the temperature thresholds for the processor-monitored levels.
Typical Processor-Monitored Temperature Thresholds for the Cisco uBR7246VXR and
Cisco uBR7246
High Warning
104 ° F (40 ° C)
109 ° F (43 ° C)
167 ° F (75 ° C)
131 ° F (55 ° C)
131 ° F (55 ° C)
131 ° F (55 ° C)
Network Processing Engine and Network Services Engine Installation and
document for their exact locations. Temperature outlets 4 and 5 on the
Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide
Environmental Monitoring and Reporting Functions
High Critical Shutdown
122 ° F (50 ° C) –
127 ° F (53 ° C) 136 ° F (58 ° C)
167 ° F (75 ° C)
–
149 ° F (65 ° C) 158 ° F (70 ° C)
149 ° F (65 ° C) 158 ° F (70 ° C)
149 ° F (65 ° C) 158 ° F (70 ° C)
Figure 5-1 shows the
5-3