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3-4 Preliminary May 9, 2000 APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide
Configuring the Thermal Profile for Fan Tray Operations (APX 8000)
Thermal status reporting
Thermal status reporting
A power-on self test (POST) is run on the fan tray of the APX 8000 during the BOOT loader
and during the operational load. If the fan tray POST fails, the POST failure status light
(amber) flashes 10 times and the following log message is generated:
LOG emergency, Shelf 1, Slot 42, Time: 15:23:57--
post failed, type (10)
In addition, two new commands are supported for displaying information about the fan tray
and the unit’s thermal status. Both commands, along with the automatic fan tray speed
regulation, are available on both shelf controllers in a redundant system.
Fanstatus command
The fanstatus command displays fan tray status information such as the fan revolutions
per minute (RPM), status (OK or BAD), and the unit’s ambient temperature. Note that the
current fan mode can be displayed as either full speed or low noise. For example, the following
output shows the fan mode set to full speed with an ambient temperature of 33 degrees Celsius
(91.4 degrees Fahrenheit):
admin> fanstatus
APX8000 Fantray status
Fantray ambient temperature: 33 C
Current fan mode: Full-speed
Fan # RPM Status
============================================
1 3367 GOOD
2 3214 GOOD
3 3075 GOOD
4 3075 GOOD
5 3214 GOOD
6 3289 GOOD
The following command output shows the fan mode set to low noise with an ambient
temperature of 27 degrees Celsius (80.6 degrees Fahrenheit):
admin> fanstatus
APX8000 Fantray status
Fantray ambient temperature: 27 C
Current fan mode: Low-noise
Fan # RPM Status
============================================
1 1992 GOOD
2 2050 GOOD
3 1992 GOOD
4 2020 GOOD
5 2050 GOOD
6 2020 GOOD