Chapter 1 Cisco uBR7225VXR Overview
Hardware Component Descriptions
Temperature sensors on the network processing engine monitor the internal air temperature and send warning messages when the internal air temperature approaches a specified threshold. If the internal temperature exceeds the specified threshold, the system environmental monitor shuts down all internal power to prevent equipment damage from excessive heat.
Note The Cisco uBR7225VXR router fan tray is not a
Figure 1-9 Cisco uBR7225VXR Fan Tray
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The fan tray draws cooling air in through the intake vent on the right side of the chassis (when viewing the router from the front) and moves the air across the internal components and sends it out through the exhaust vent on the left side of the chassis. Figure
The left and right sides of the chassis must remain unobstructed to ensure adequate airflow and prevent overheating inside the chassis; we recommend at least 3 inches of clearance. (See the “Site Requirements” section on page
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