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.
Soluon
When the switch triggers a temperature alarm such as the FPC 0 EX-PFE1 Temp Too Hot alarm, use the show
chassis environment and the show chassis temperature-thresholds commands to idenfy the condion that
triggered the alarm.
CAUTION: To prevent the switch from overheang, operate it in an area with an
ambient temperature within the recommended range. To prevent airow restricon,
allow at least 6 inches (15.2 cm) of clearance around the venlaon openings.
1. Connect to the switch by using Telnet, and issue the show chassis environment command. This command
displays environmental informaon about the switch chassis, including the temperature. The
command also displays informaon about the fans, power supplies, and Roung Engines. Following is
a sample output on an EX9208 switch. The output is similar on other EX Series switches.
show chassis environment (EX9208 Switch)
user@switch> show chassis environment
Class Item Status Measurement
Temp PEM 0 OK 40 degrees C / 104 degrees F
PEM 1 OK 40 degrees C / 104 degrees F
PEM 2 Absent
PEM 3 Absent
Routing Engine 0 OK 37 degrees C / 98 degrees F
Routing Engine 0 CPU OK 35 degrees C / 95 degrees F
Routing Engine 1 Absent
Routing Engine 1 CPU Absent
CB 0 Intake OK 36 degrees C / 96 degrees F
CB 0 Exhaust A OK 34 degrees C / 93 degrees F
CB 0 Exhaust B OK 40 degrees C / 104 degrees F
CB 0 ACBC OK 39 degrees C / 102 degrees F
CB 0 XF A OK 46 degrees C / 114 degrees F
CB 0 XF B OK 45 degrees C / 113 degrees F
CB 1 Intake Absent
CB 1 Exhaust A Absent
205
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