Troubleshoot Temperature Alarms In Ex Series Switches - Juniper EX4300 Series Hardware Manual

Troubleshoot Temperature Alarms in EX Series Switches

IN THIS SECTION
Problem | 334
Cause | 334
Solution | 334
Problem
Description
EX Series switches trigger a temperature alarm FPC 0 EX-PFE1 Temp Too Hot when the switch temperature
becomes too hot.
Cause
Temperature sensors in the chassis monitor the temperature of the chassis. The switch triggers an alarm
if a fan fails or if the temperature of the chassis exceeds permissible levels for some other reason.
Solution
When the switch triggers a temperature alarm such as the FPC 0 EX-PFE1 Temp Too Hot alarm, use the
and the
chassis environment
triggered the alarm.
CAUTION: To prevent the switch from overheating, operate it in an area with an
ambient temperature within the recommended range. To prevent airflow restriction,
allow at least 6 inches (15.2 cm) of clearance around the ventilation openings.
1. Connect to the switch by using Telnet, and issue the
displays environmental information about the switch chassis, including the temperature. The
command also displays information about the fans, power supplies, and Routing Engines. Following is
a sample output on an EX9208 switch. The output is similar on other EX Series switches.
show chassis temperature-thresholds
commands to identify the condition that
command. This command
show chassis environment
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