8418bd3df3
This patch set updates the documentation for QFX5200 & QFX5210 Juniper switching platforms. Signed-off-by: Ciju Rajan K <crajank@juniper.net>
153 lines
5.0 KiB
Plaintext
Executable File
153 lines
5.0 KiB
Plaintext
Executable File
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Copyright (c) 2020, 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 5 fans and each of the fan has 2 fan modules. Overall there are
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10 fans in the system. These fans are controlled by ADT7470 driver.
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Fan controls can be found in
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/sys/bus/i2c/devices/7-002c
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/sys/bus/i2c/devices/7-002e
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/sys/bus/i2c/devices/7-002f
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For example, the complete path to driver control files will be
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/sys/bus/i2c/devices/7-002c/hwmon/hwmon12
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Fan duty cycle can be controlled through 'pwm1', 'pwm2', 'pwm3', 'pwm4' sysfs files.
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For example, these are the absolute paths to the control files
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/sys/bus/i2c/devices/7-002c/hwmon/hwmon*/pwm1 7-002c controls 2 fan modules
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/sys/bus/i2c/devices/7-002c/hwmon/hwmon*/pwm2
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/sys/bus/i2c/devices/7-002c/hwmon/hwmon*/pwm3
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/sys/bus/i2c/devices/7-002c/hwmon/hwmon*/pwm4
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/sys/bus/i2c/devices/7-002e/hwmon/hwmon*/pwm1 7-002e controls 2 fan modules
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/sys/bus/i2c/devices/7-002e/hwmon/hwmon*/pwm2
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/sys/bus/i2c/devices/7-002e/hwmon/hwmon*/pwm3
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/sys/bus/i2c/devices/7-002e/hwmon/hwmon*/pwm4
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/sys/bus/i2c/devices/7-002f/hwmon/hwmon*/pwm1 7-002c controls only 1 fan module
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/sys/bus/i2c/devices/7-002f/hwmon/hwmon*/pwm2
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For convenience, it will be represented as
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/sys/bus/i2c/devices/7-002[c/e/f]/hwmon/hwmon*/pwm[1-4]
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Fan speed is given by
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/sys/bus/i2c/devices/7-002[c/e/f]/hwmon/hwmon*/fan[1-4]_input
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Fan module presence is given by
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/sys/devices/pci0000:00/0000:00:1c.0/0000:0f:00.0/refpga-tmc.15/fan[0-4]_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
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/sys/devices/pci0000:00/0000:00:1c.0/0000:0f:00.0/refpga-tmc.15/fan[0-4]_type
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A value of '1' indicate the direction is AFO (Front to back airflow) or Airflow
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out. A value of '0' indicate that direction is AFI (Back to front airflow) or
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Airflow in.
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Temperature sensors
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===================
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There are 10 temperature sensors. Kernel driver tmp401 is used for
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reading temeperature sensors.
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The readings are available in
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/sys/bus/i2c/devices/5-0048/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/5-0049/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/5-004a/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/5-004b/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/6-0048/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/6-0049/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/6-004a/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/6-004b/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/7-0048/hwmon/hwmon*/temp1_input
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/sys/bus/i2c/devices/7-0049/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 TMC fpga.
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PSU presence is given by jnx-tmc-psu dirver and is available at
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/sys/devices/pci0000:00/0000:00:1c.0/0000:0f:00.0/psu-tmc.15/psu*_present
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A value of '1' indicate PSU is present and a value of '0' otherwise.
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PSU monitoring data is provided by jnx-psu-monitor driver and is available at
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/sys/bus/i2c/devices/3-0058
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/sys/bus/i2c/devices/4-0058
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SFPs
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====
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There are 32 QSFP+ modules supported in qfx5200 platform. EEPORMs will be
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mapped under /sys/bus/i2c/devices/[14-45]-0050/ sysfs directory.
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FEC should be turned on for 100G SR4 & PSM4 optics and should
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be turned off for 100G LR4 optics. If the FEC mode is not set
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as per the optic type the port may not link up or work properly.
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In some cases while interoperating between other NOSs & traffic
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generators, FEC need to be enabled even for 100G DAC cables.
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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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Platform reboot
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=================
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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: qfx5200_cpu_reset
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Platform monitoring daemon
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==========================
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“juniper_qfx5200_monitor.py” is the platform monitoring script.
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It implements the qfx5200 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 in case of any over heating.
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