Environmental Monitoring - Cisco 7200 VXR User Manual

Chapter 1 Cisco 7200 VXR Product Overview

Environmental Monitoring

The environmental monitoring functions use four sensors, two on the network processing engine or
network services engine and two on the I/O controller, to monitor the temperature of the cooling air as
it moves through the chassis.
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. The system stores the present parameter measurements for both temperature and DC
voltage in NVRAM so you can retrieve them later as a report of the last shutdown parameters.
In addition, 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.
The environmental monitoring functions use the following levels of status conditions to monitor the
system:
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•
•
•
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Table 1-31
Table 1-32
levels.
Table 1-31 Typical Processor-Monitored Temperature Thresholds
Parameter
NPE-175, NPE-225,
NPE-300, NPE-400,
NSE-1, NPE-G1
NPE-100 or NPE-200
78-5469-04 B0
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.
lists the typical temperature thresholds for each network processing engine type, and
lists the DC power thresholds for the normal, warning, and critical (power supply-monitored)
High Warning
Chassis inlet 104 F (40 C)
Chassis outlet 1 109 F (43 C)
Chassis outlet 2 109 F (43 C)
Chassis outlet 3 131 F (55 C)
Chassis inlet 104 F (40 C)
Chassis outlet 1 109 F (43 C)
Chassis outlet 2 167 F (75 C)
High Critical Shutdown
122 F (50 C) —
127 F (53 C) 136 F (58 C)
127 F (53 C) —
149 F (65 C) 158 F (70 C)
122 F (50 C) —
127 F (53 C) 136 F (58 C)
167 F (75 C) —
Cisco 7200 VXR Installation and Configuration Guide
Functional Overview
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