Copyright (c) 2019, Juniper Networks, Inc.
All rights reserved.
Front panel LEDs
================
There are 4 system LEDs in the front panel. Master, System, Alarm, & Beacon.
LED controls can be found under /sys/class/leds. The sysfs interface &
colour mappings are as follows:
For master LED: /sys/class/leds/master/brightness
0 => off
1 => green
For system LED: /sys/class/leds/system/brightness
0 => off
1 => green
For alarm LED: /sys/class/leds/alarm/brightness
0 => off
1 => amber
2 => red
For beacon LED: /sys/class/leds/beacon/brightness
0 => off
1 => blue
For any of the above LEDs, max_brightness file can tell the maximum value
accepted.
System FANs
===========
There are 4 fans and each of the fan has 2 fan modules. Overall there are
8 fans in the system.
Fan controls can be found in /sys/bus/i2c/devices/17-0068. All the fans
are controlled by one duty cycle value, ranges from 0 to 100
Fan duty cycle can be controlled through /sys/bus/i2c/devices/17-0068/pwm1
Fan module presence is given by /sys/bus/i2c/devices/17-0068/fan[1-4]_present
file. A value of '1' indicate that fan is present & a value of '0' otherwise.
Fan rotation direction is given by /sys/bus/i2c/devices/17-0068/fan[1-4]_direction.
A value of '0' indicate the direction is AFO (Front to back airflow) or Airflow
out. A value of '1' indicate that direction is AFI (Back to front airflow) or
Airflow in.
Fan speed is given by fan[1-4]_input
Temperature sensors
===================
There are 6 temperature sensors. The readings are available in
/sys/bus/i2c/devices/{0}-00{1}/hwmon/hwmon*/temp1_input
System PSUs
===========
There are two independent PSUs. These are controlled by a dedicated CPLD.
The status registers are mapped under /sys/bus/i2c/devices/9-0050 and
/sys/bus/i2c/devices/10-0053.
SFPs
====
There are 64 QSFP+ modules supported in qfx5210 platform. EEPORMs will be
mapped under /sys/bus/i2c/devices/[25-88]-0050/ sysfs directory
Sensor details
==============
LM75 supported sensor modules will be available under 'sensors' command.
If you want to get all the sensor data including the SFPs & LEDs, you can
invoke 'sudo juniper_qfx5210_util.py show'
Platform poweroff
=================
Linux poweroff commands such as 'poweroff', 'shutdown', 'halt', etc. will not
power off qfx5210 platform as there are custom CPLDs control the power off
sequences. Use the command 'sudo platform_poweroff' to power off qfx5210
platform
Platform monitoring daemon
==========================
“juniper_qfx5210_monitor.py” is the platform monitoring script.
It implements the qfx5210 EM policy. This script will run as system service
and monitor the temperature sensors in every 20 seconds. Based on the EM
policy thresholds, it controls the fan rpm, manage alarm leds, and
shutdown the box.
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