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Sil's avatar
Sil
Icon for Nimbostratus rankNimbostratus
Aug 22, 2017

Question to Chassis Temperature - Hi Limit (C)

We use snmp to monitor our f5 BIG-IP appliance (5250v). To configure the threshold we want to know if the "Hi Limit" is the right maximum value for the monitoring and the following temperature sensors/components:

show /sys hardware:

Chassis Temperature Status
  Index  Lo Limit(C)  Temp(degC)  Hi Limit(C)  Location
  1      0            45          82           Main board HSBE transistor temp
  2      0            28          62           Main board HSBE IC temperature
  3      0            22          42           Main board inlet transistor tem
  4      0            23          42           Main board inlet IC temperature
  5      0            28          52           Main board outlet transistor te
  6      0            30          52           Main board outlet IC temperatur
  7      0            35          65           Power supply 1 meas. inlet tem
  8      0            36          65           Power supply 2 meas. inlet tem
  9      0            29          52           Main board near power supplies
  10     0            33          82           Main board near B56821 temperat

What happens when this value is reached? Is it just a information to know "this value is too high I should do anything" or would the f5 automatically turn off (for example)?

I could not find any documentation, unfortunately. 😞

application delivery
application monitoring and management
BIG-IP
hardware
snmp
temperature

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  • jaikumar_f5's avatar
    jaikumar_f5
    Icon for MVP rankMVP
    Aug 22, 2017

    When the threshold limit is reached, all it would do is throw an alert in the /var/log/ltm.

    You can check the alert.conf for the same. You can also use the inbuild OID value, if it helps.

     less /etc/alertd/alert.conf  
alert BIGIP_SYSTEM_CHECK_E_CHASSIS_TEMP_HIGH {
        snmptrap OID=".1.3.6.1.4.1.3375.2.4.0.7";
        lcdwarn description="detected Chassis temperature too high." priority="3"
}
alert BIGIP_SYSTEM_CHECK_E_CHASSIS_FAN_BAD {
        snmptrap OID=".1.3.6.1.4.1.3375.2.4.0.8";
        lcdwarn description="detected Chassis fan failure." priority="3"
}
alert BIGIP_SYSTEM_CHECK_E_CHASSIS_POWER_BAD {
        snmptrap OID=".1.3.6.1.4.1.3375.2.4.0.9";
        lcdwarn description="detected Chassis power supply failure." priority="4"
}

    There is no specific action triggered for Chasis high temperature.