73721223cd
* Updating the platform README Added the steps for configuring FEC mode Signed-off-by: Ciju Rajan K <crajank@juniper.net>
118 lines
3.9 KiB
Plaintext
Executable File
118 lines
3.9 KiB
Plaintext
Executable File
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Copyright (c) 2019, Juniper Networks, Inc.
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All rights reserved.
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Front panel LEDs
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================
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There are 4 system LEDs in the front panel. Master, System, Alarm, & Beacon.
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LED controls can be found under /sys/class/leds. The sysfs interface &
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colour mappings are as follows:
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For master LED: /sys/class/leds/master/brightness
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0 => off
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1 => green
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For system LED: /sys/class/leds/system/brightness
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0 => off
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1 => green
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For alarm LED: /sys/class/leds/alarm/brightness
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0 => off
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1 => amber
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2 => red
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For beacon LED: /sys/class/leds/beacon/brightness
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0 => off
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1 => blue
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For any of the above LEDs, max_brightness file can tell the maximum value
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accepted.
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System FANs
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===========
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There are 4 fans and each of the fan has 2 fan modules. Overall there are
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8 fans in the system.
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Fan controls can be found in /sys/bus/i2c/devices/17-0068. All the fans
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are controlled by one duty cycle value, ranges from 0 to 100
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Fan duty cycle can be controlled through /sys/bus/i2c/devices/17-0068/pwm1
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Fan module presence is given by /sys/bus/i2c/devices/17-0068/fan[1-4]_present
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file. A value of '1' indicate that fan is present & a value of '0' otherwise.
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Fan rotation direction is given by /sys/bus/i2c/devices/17-0068/fan[1-4]_direction.
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A value of '0' indicate the direction is AFO (Front to back airflow) or Airflow
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out. A value of '1' indicate that direction is AFI (Back to front airflow) or
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Airflow in.
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Fan speed is given by fan[1-4]_input
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Temperature sensors
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===================
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There are 6 temperature sensors. The readings are available in
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/sys/bus/i2c/devices/{0}-00{1}/hwmon/hwmon*/temp1_input
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System PSUs
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===========
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There are two independent PSUs. These are controlled by a dedicated CPLD.
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The status registers are mapped under /sys/bus/i2c/devices/9-0050 and
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/sys/bus/i2c/devices/10-0053.
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SFPs
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====
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There are 64 QSFP+ modules supported in qfx5210 platform. EEPORMs will be
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mapped under /sys/bus/i2c/devices/[25-88]-0050/ sysfs directory.
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FEC should be turned on for 100G SR optics and should be turned off for
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100G LR optics. If the optic is changed, please update the entry and
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reload the configuration. If the FEC mode is not set as per the optic
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type the port may not link up or work properly.
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As an example, see this configuration for FEC for 100G SR4 optics in
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/etc/sonic/config_db.json
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"Ethernet4": {
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"admin_status": "up",
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"alias": "Ethernet4",
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"fec": "rs",
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"index": "1",
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"lanes": "65,66,67,68",
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"mtu": "9100",
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"speed": "100000"
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}
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Sensor details
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==============
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LM75 supported sensor modules will be available under 'sensors' command.
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If you want to get all the sensor data including the SFPs & LEDs, you can
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invoke 'sudo juniper_qfx5210_util.py show'
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Platform poweroff
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=================
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Linux poweroff commands such as 'poweroff', 'shutdown', 'halt', etc. will not
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power off qfx5210 platform as there are custom CPLDs control the power off
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sequences. So acpi poweroff hooks are added for powering off the qfx5210. The
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following messages are displayed in the console towards end of poweroff
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sequence:
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[ 52.500807] System halt/power_off
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[ 52.866331] reboot: Power down
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[ 52.903257] pm_power_off: qfx5210_cpld_power_off
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Once the above messages are seen, you can safely remove the power to the system.
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Similarly platform reboot sequences are in place for system reboot. The following
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messages are displayed in the console when the system is rebooted:
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[ 6053.163363] System restart: qfx5210_cpld_soft_reset
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Platform monitoring daemon
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==========================
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“juniper_qfx5210_monitor.py” is the platform monitoring script.
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It implements the qfx5210 EM policy. This script will run as system service
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and monitor the temperature sensors in every 20 seconds. Based on the EM
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policy thresholds, it controls the fan rpm, manage alarm leds, and
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shutdown the box.
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