Figure 15: Airflow Through PoE Models of EX2200 Switches Except the
EX2200-C Switch Models
g027008
Chassis rear
Chassis front
Fans Fan
Under normal operating conditions, the fans operate at a moderate speed to reduce
noise. Temperature sensors in the chassis monitor the temperature within the chassis.
If any fan fails or if the temperature inside the chassis rises above the threshold, the
switch raises an alarm and all functioning fans operate at a higher speed than normal.
If the temperature inside the chassis rises above the threshold, the switch shuts down
automatically.
Related
Documentation
• EX2200 Switches Hardware Overview on page 3
• Chassis Status LEDs in EX2200 Switches on page 13
• Understanding Alarm Types and Severity Levels on EX Series Switches
• Prevention of Electrostatic Discharge Damage on page 180
Copyright © 2011, Juniper Networks, Inc.20
Complete Hardware Guide for EX2200 Ethernet Switches
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