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Status -> slot 26 M3-FAN

Clicking on slot 26 M3-FAN will display the following information for the fan monitor.

The webpage for the FAN MONITOR is subdivided into categories: general information, uc, and M3-FAN. Each section/category contains a variety of counters and state bits related to the operation or health of the fan monitor. As a general rule, a non-zero value for a state bit or counter should be investigated as it may indicate an abnormality in the functioning of the hardware.

Click on the name of the counter/state bit below, and the hyperlink will forward to the glossary for its definition and a list of possible causes for the non-zero value.

The general information section of the webpage includes:

• lost communication

• lost communication count

• serial number -- the serial number for the fan monitor.

• engineering date code -- internal Myricom manufacturing information.

• firmware version -- internal Myricom use.

• monitor version -- internal Myricom use.

• changes

The uc section provides information pertaining to the health of the microcontroller on the fan monitor.

• state -- the operational state for the fan monitor.

• resets

• firmware faults

• overtemps

• reboot: <n>

  This clickable variable hyperlinks to a webpage to reboot the microcontroller on the fan monitor, or the microcontrollers on all of the switch line cards.

  

  Checking the reboot box and clicking on Apply on this webpage will set this <n> state bit value to 1 and trigger the rebooting of the selected microcontroller(s).

The M3-FAN section provides information on the fans.

• fan 0 and fan 1

  Clicking on fan 0, for example, will reveal counter and state bit information for this fan.

  

  • speed

    The fan speed is reported in revolutions per minute (RPM).

  • minimum speed

    The minimum speed is 2000 RPMs. If the speed falls below the minimum speed, the bad state bit will be triggered.

  • bad

  • bad count

  • tray missing

  • tray missing count

  • mode

    The operational mode for the fan is as follows:

    mode - 0 if temperature is cool (slow fans)
           1 if temperature is hot  (fast fans)
    

  • voltage

    Voltage on the fan.

  • control: <n>

    This clickable variable hyperlinks to a webpage to adjust the speed of the fans.

    

    Checking the run fast box and then Apply will set this <n> state bit value to 1 and increase the speed for this fan, this slot's fans, or all fans. A value of 0 for this state bit indicates normal operation (slow).

• temperature

  This clickable variable hyperlinks to a webpage to monitor the temperature of the fan monitor.

  

• operating led

  This clickable variable hyperlinks to a webpage to modify the behavior of the status LED on the switch line card.

  

  This webpage lists the following state bits.

  • led state: <n> (<color>)

    The values of <n> and <color> are as follows:

    led state: 0 indicates LED is off
               1 indicates LED is fault (amber)
               2 indicates LED is operating (green)
               4 indicates LED is blinking green
               5 indicates LED is blinking amber
               6 indicates LED is blinking amber/green
    

  • force led: <n> (<color>)

    This clickable variable hyperlinks to a webpage to modify the behavior of the status LED on the switch line card.

    

    If force led is nonzero, the LED is in the state specified by force led, and led state indicates what state the LED would be in if force led is zero.

    force led: 0 indicates LED handled by uC
               1 forces fault indication (amber)
               2 forces operating indication (green)
               3 forces LED to be off.
               4 forces LED to blink green
               5 forces LED to blink amber
               6 forces LED to blink amber/green
    

Last updated: 27 August 2007