Juniper EX4200 Hardware Manual page 253

Table 65: show chassis temperature-thresholds Output Fields (continued)
Field Name
Yellow or amber alarm
Red alarm
Fire Shutdown
When a temperature alarm is triggered, you can identify the condition that triggered it by running the
show chassis environment command to display the chassis temperature values for each component and
comparing those with the temperature threshold values, which you can display by running the show chassis
temperature-thresholds command.
For example, for FPC 3:
If the temperature of FPC 3 exceeds 55° C, the output indicates that the fans are operating at a high
speed (no alarm is triggered).
If the temperature of FPC 3 exceeds 65° C, a yellow alarm is triggered to indicate that one or more fans
have failed.
If the temperature of FPC 3 exceeds 75° C, a yellow alarm is triggered to indicate that the temperature
threshold limit is exceeded.
If the temperature of FPC 3 exceeds 80° C, a red alarm is triggered to indicate that one or more fans
have failed.
If the temperature of FPC 3 exceeds 105° C, a red alarm is triggered to indicate that the temperature
threshold limit is exceeded.
If the temperature of FPC 3 exceeds 110° C, the switch is powered off.
Table 66 on page 253 lists the possible causes for the switch to generate a temperature alarm and the
respective remedies.
Table 66: Causes and Remedies for Temperature Alarms
Cause
Ambient temperature is above
threshold temperature.
Field Description
Temperature threshold, in degrees Celsius, that trigger a yellow or amber alarm.
Normal—The temperature threshold that must be exceeded on the component to trigger a yellow o
Bad fan—The temperature threshold that must be exceeded on the component to trigger a yellow o
Temperature threshold, in degrees Celsius, that trigger a red alarm.
Normal—The temperature threshold that must be exceeded on the component to trigger a red alarm
Bad fan—The temperature threshold that must be exceeded on the component to trigger a red alarm
Temperature threshold, in degrees Celsius, for the switch to shut down.
Remedy
Ensure that the ambient temperature is within the threshold temperature limit. See
"Environmental Requirements and Specifications for EX Series Switches" on page
253
60.