Monitoring Temperatures of Modules
You can view the temperature of each module by issuing the show environment all and show environment table commands. In addition, the system generates detailed log messages if the temperature of a module is outside normal operating limits.
If the temperature of any module exceeds the upper temperature limit, the system immediately goes into thermal protection mode. Once the system has entered thermal protection mode, you must resolve the cause of the high temperature.
Table 10-6 Troubleshooting high-temperature conditions
Space around system does not meet specifications (see Chapter 11, System Specifications). Ambient temperature exceeds specifications (see Chapter 11, System Specifications). Replace fan tray (see Chapter 9, Maintaining E-Series Routers). Replace module (see Chapter 5, Installing Modules).
When you have resolved the cause of the high temperature, you must power cycle the system to reset the modules.