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Preparing for Installation 2-13
Site Requirements Guidelines
Figure 2-4 Internal Air Flow of the Cisco—Side View
Temperature and Humidity Guidelines
For the operating and nonoperating environmental specifications for the Cisco 12008, refer
to Table 1-11 in Chapter 1. The router operates within the ranges specified in this table;
however, a temperature that approaches a minimum or maximum level indicates a potential
problem. You can maintain normal system operations by anticipating and correcting
environmental anomalies before they approach a critical state.
The environmental monitors built into the Cisco 12008 protect system components from
potential damage from overvoltage and overtemperature conditions. To ensure normal
operations and avoid unnecessary maintenance, plan and prepare your site properly before
installing the router.
Exhaust air
Upper
card cage
Ambient air
Air filter assembly
Power supply fans
Card cage
fans
Front
Rear
Top
H7683
Lower
card cage
Bottom