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Monitoring Fan Status and Ambient Temperature on S-Series and K-Series

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TitleMonitoring Fan Status and Ambient Temperature on S-Series and K-Series
Question
How are temperatures reported on K-Series and S-Series for ambient temperature monitoring?
Environment
  • K-Series
  • S-Series
  • Firmware Version 7.11.02 and greater
Answer
  • Ambient temperatures are reported from the fan tray sensor and typically run about 3 degrees Centigrade higher than actual
    • This information is available in the ‘ctron-environment-mib’ or through CLI
    • Values are reported via traps and in the syslog.   (Temps are degrees F x 10 in mib, degrees C in CLI/syslog)
  • To show the Temperature Alarm threshold show sys hardware

SR1(su)->show system hardware
        CHASSIS HARDWARE INFORMATION
         ----------------------------
         Chassis Type: S8 Chassis (0x13)
         Fan 1 Temperature: 27.000 C
         Fan 2 Temperature: 30.000 C
         Ambient Temperature: 27.0 C

  • The system triggers the hotter of the two numbers -- Chassis Fan 1 Temperature or Chassis Fan 2 Temperature

Chassis Type:               S8 Chassis
   Chassis Serial Number:      4175084651746305
   Chassis Power Supply 1:     Installed & Operating, AC, Redundant
   Chassis Power Supply 2:     Installed & Operating, AC, Redundant
   Chassis Power Supply 3:     Installed & Operating, AC, Redundant
   Chassis Power Supply 4:     Installed & Operating, AC, Redundant
   Chassis Fan 1:              Installed & Operating
   Chassis Fan 2:              Installed & Operating
   PoE Power Supply 1:         Info Not Available
   PoE Power Supply 2:         Info Not Available
   PoE Power Supply 3:         Info Not Available
   PoE Power Supply 4:         Info Not Available
   PoE Power Supply 5:         Info Not Available
   PoE Power Supply 6:         Info Not Available
   PoE Power Supply 7:         Info Not Available
   PoE Power Supply 8:         Info Not Available
   Chassis Fan 1 Temperature:  24.000  C
   Chassis Fan 2 Temperature:  25.000  C

Additional notes
There is further debug that can be done in debug mode with the assistance of a GTAC representative to look at temperature history and individual fan speeds and status of individual fans in the fan tray.
Please contact GTAC for further assistance.

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