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Cisco ASR 903 Router Hardware Installation Guide
OL-25178-05
Chapter2 Preparing for Installation
Site Planning
•Use the show environment all command regularly to check the internal system status. The
environmental monitor continually checks the interior chassis environment; it provides warnings
about high temperature and creates reports on other potentially dangerous occurrences. If warning
messages are displayed, take immediate action to identify the cause, and correct the problem.
•Keep the CiscoASR 903 Router off the floor and out of areas that collect dust.
•Follow ESD-prevention procedures to avoid damage to equipment. Damage from static discharge
can cause immediate or intermittent equipment failure.
Locating for Proper Airflow
Ensure that the Cisco ASR 903 Router location has enough airflow to keep the system operating within
the environmental characteristics and the air temperature is sufficient to compensate for the heat
dissipated by the system. For more information, see “Air Flow Guidelines” section on page2-11.