Juniper ACX2000 Configuration Guide

Table 136: show chassis temperature-thresholds Output Fields (continued)
Field DescriptionField name
NOTE: On the QFX3500 switch and QFX3600 switch, there are four fan speeds: low, medium-low,
medium-high, and high. The fan speed changes at the threshold when going from a low speed to a
higher speed. When the fan speed changes from a higher speed to a lower speed, the temperature
changes two degrees below the threshold.
Temperature threshold settings, in degrees Celsius, for the fans to operate at normal and high speeds.
• Normal—The fans operate at normal speed if the component is at or below this temperature and
all the fans are present and functioning normally.
NOTE: On a TX Matrix Plus router with 3D SIBs, the threshold temperature at the XF junction is set
to 70°C for Normal fan speed, which is less than or equal to 4800 RPM.
• High—The fans operate at high speed if the component has exceeded this temperature or a fan
has failed or is missing.
NOTE: On a TX Matrix Plus router with 3D SIBs, the threshold temperature at the XF junction is set
to 75°C for High fan speed, which is greater than or equal to 5000 RPM.
NOTE: For MX480 Routers, there are three fan speeds: Low, Medium, and High.
An alarm is not triggered until the temperature exceeds the threshold settings for a yellow alarm or
a red alarm.
Fan speed
Temperature threshold settings, in degrees Celsius, that trigger a yellow alarm.
• Normal—The temperature that must be exceeded on the component to trigger a yellow alarm
when the fans are running at full speed.
• Bad fan—The temperature that must be exceeded on the component to trigger a yellow alarm
when one or more fans have failed or are missing.
Yellow alarm
Temperature threshold settings, in degrees Celsius, that trigger a red alarm.
• Normal—The temperature that must be exceeded on the component to trigger a red alarm when
the fans are running at full speed.
• Bad fan—The temperature that must be exceeded on the component to trigger a red alarm when
one or more fans have failed or are missing.
Red alarm
(T4000 routers, TX Matrix Plus router with 3D SIBs, and PTX Series Packet Transport Routers
only)—Temperature threshold settings, in degrees Celsius, for the network device to shut down.
Fire Shutdown
Sample Output
show chassis temperature-thresholds
user@host> show chassis temperature-thresholds
Fan speed Yellow alarm Red alarm
(degrees C) (degrees C) (degrees C)
Item Normal High Normal Bad fan Normal Bad fan
Chassis default 48 54 65 55 75 65
Routing Engine 0 70 80 95 95 110 110
Routing Engine 1 70 80 95 95 110 110
FPC 0 55 60 75 65 90 80
Copyright © 2017, Juniper Networks, Inc.2396
ACX Series Universal Access Router Configuration Guide

Juniper ACX2000 Specifications

General

Brand	Juniper
Model	ACX2000
Category	Network Router
Language	English