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  • 1.  SRX 3XX CPU temperature

    Posted 08-27-2021 09:04
    Hi!
    I have SRX 240 and SRX 340. Both are on the table in the same room.
    SRX240:
    itbn@R-M29-01> show chassis environment              
    Class Item                           Status     Measurement
    Temp  Routing Engine                 OK         44 degrees C / 111 degrees F
          Routing Engine CPU             OK         42 degrees C / 107 degrees F
    Fans  SRX240 PowerSupply fan 1       OK         Spinning at normal speed
          SRX240 PowerSupply fan 2       OK         Spinning at normal speed
          SRX240 CPU fan 1               OK         Spinning at normal speed
          SRX240 CPU fan 2               OK         Spinning at normal speed
          SRX240 IO  fan 1               OK         Spinning at normal speed
          SRX240 IO  fan 2               OK         Spinning at normal speed
    Power Power Supply 0                 OK        
    ​
    itbn@R-M29-01> show chassis fan 
          Item                      Status   RPM     Measurement
          SRX240 PowerSupply fan 1  OK       1500    Spinning at normal speed 
          SRX240 PowerSupply fan 2  OK       2250    Spinning at normal speed 
          SRX240 CPU fan 1          OK       1500    Spinning at normal speed 
          SRX240 CPU fan 2          OK       2250    Spinning at normal speed 
          SRX240 IO  fan 1          OK       750     Spinning at normal speed 
          SRX240 IO  fan 2          OK       1500    Spinning at normal speed 
    

    SRX340:

    root@SRX-340-1> show chassis environment                   
    Class Item                           Status     Measurement
    Temp  Routing Engine                 OK         39 degrees C / 102 degrees F
          Routing Engine CPU             OK         64 degrees C / 147 degrees F
    Fans  SRX340 Chassis fan 0           OK         Spinning at normal speed
          SRX340 Chassis fan 1           OK         Spinning at normal speed
          SRX340 Chassis fan 2           OK         Spinning at normal speed
          SRX340 Chassis fan 3           OK         Spinning at normal speed
    Power Power Supply 0                 OK        
    
    root@SRX-340-1> show chassis fan      
          Item                      Status   RPM     Measurement
          SRX340 Chassis fan 0      OK       3780    Spinning at normal speed 
          SRX340 Chassis fan 1      OK       3780    Spinning at normal speed 
          SRX340 Chassis fan 2      OK       3840    Spinning at normal speed 
          SRX340 Chassis fan 3      OK       3540    Spinning at normal speed 


    Is this normal for SRX340?
    Thank you!



  • 2.  RE: SRX 3XX CPU temperature

     
    Posted 08-28-2021 05:52
    I would assume that the newer cpu simply runs hotter.

    But to verify all is good confirm there are no alarms
    show chassis alarms

    And check what the operating range is for the device
    show chassis temperature-thresholds

    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
    http://puluka.com/home
    ------------------------------



  • 3.  RE: SRX 3XX CPU temperature

    Posted 08-30-2021 08:28
    -------------------------------------------
    Original Message:
    Sent: 08-28-2021 05:51
    From: STEVE PULUKA
    Subject: SRX 3XX CPU temperature

    I would assume that the newer cpu simply runs hotter.

    But to verify all is good confirm there are no alarms
    show chassis alarms

    And check what the operating range is for the device
    show chassis temperature-thresholds

    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
    http://puluka.com/home
    ------------------------------

    Original Message:
    Sent: 08-27-2021 08:47
    From: Unknown User
    Subject: SRX 3XX CPU temperature

    Hi!
    I have SRX 240 and SRX 340. Both are on the table in the same room.
    SRX240:



  • 4.  RE: SRX 3XX CPU temperature
    Best Answer

     
    Posted 09-03-2021 08:24
    Sorry for not being clear.

    The primary source of heat in these devices is not room temperature but the heat given off by the cpu itself.  Newer cpu typically run much hotter generating more heat so this is normal.

    The commands are to verify that there are no alarms and therefore no issue with the temperatures you are seeing.

    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
    http://puluka.com/home
    ------------------------------