Chassis Management

The chassis manager provides the user access to the following information:

Additionally, it monitors:

• AC power to the PSUs

• DC power out from the PSUs

• Chassis failures

The system health monitor scans the system to decide whether or not the system is healthy. When the monitor discovers that one of the system's modules (fan, or power supply) is in an unhealthy state or returned from an unhealthy state, it notifies the users through the following methods:

• System logs—accessible to the user at any time as they are saved permanently on the system

• Status LEDs—changed by the system health monitor when an error is found in the system and is resolved

• Email/SNMP traps—notification on any error found in the system and resolved

Re-Notification on Errors

When the system is in an unhealthy state, the system health monitor notifies the user about the current unresolved issue every X seconds. The user can configure the re-notification gap by running the “health notif-cntr <counter>” command.

System Health Monitor Alerts Scenarios

System Health Monitor sends notification alerts in the following cases:

Width Reduction Power Saving

Link width reduction (LWR) is a
NVIDIA

proprietary power saving feature to be utilized to economize the power usage of the fabric. LWR may be used to manually or automatically configure a certain connection between
NVIDIA switch

systems to lower the width of a link from 4X operation to 1X based on the traffic flow.

LWR is relevant only for
40GbE

speeds in which the links are operational at a 4X width.

LWR has three operating modes per interface:

• Disabled—LWR does not operate and the link remains in 4X under all circumstances.

• Automatic—the link automatically alternates between 4X and 1X based on traffic flow.

• Force—a port is forced to operate in 1X mode lowering the throughput capability of the port. This mode should be chosen in cases where constant low throughput is expected on the port for a certain time period—after which the port should be configured to one of the other two modes, to allow higher throughput to pass through the port.

The following table describes LWR configuration behavior:

1. Display module’s temperature. Run:

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   switch (config) # show temperature 
   ---------------------------------------------------------
   Module      Component              Reg  CurTemp    Status
                                           (Celsius) 
   ---------------------------------------------------------
   MGMT        SIB                    T1   33.00      OK    
   MGMT        Board AMB temp         T1   24.50      OK    
   MGMT        Ports AMB temp         T1   27.00      OK    
   MGMT        CPU package Sensor     T1   29.00      OK    
   MGMT        CPU Core Sensor        T1   28.00      OK    
   MGMT        CPU Core Sensor        T2   24.00      OK    
   PS1         power-mon              T1   22.00      OK    
   PS2         power-mon              T1   23.00      OK 
           

2. Display measured voltage levels of power supplies. Run:

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   switch (config) # show voltage
   ------------------------------------------------------------------------------------------------
   Module   Power Meter              Reg                    Expected  Actual   Status  High   Low  
                                                            Voltage   Voltage          Range  Range
   ------------------------------------------------------------------------------------------------
   MGMT     acdc-monitor1            DDR3 0.675V            0.68      0.67     OK      0.78   0.57 
   MGMT     acdc-monitor1            CPU 0.9V               0.78      0.78     OK      0.89   0.66 
   MGMT     acdc-monitor1            SYS 3.3V               3.30      3.34     OK      3.79   2.80 
   MGMT     acdc-monitor1            CPU 1.8V               1.80      1.79     OK      2.07   1.53 
   MGMT     acdc-monitor1            CPU/PCH 1.05V          1.05      1.05     OK      1.21   0.89 
   MGMT     acdc-monitor1            CPU 1.05V              1.05      1.05     OK      1.21   0.89 
   MGMT     acdc-monitor1            DDR3 1.35V             1.35      1.35     OK      1.55   1.15 
   MGMT     acdc-monitor1            USB 5V                 5.00      5.04     OK      5.75   4.25 
   MGMT     acdc-monitor1            1.05V LAN              1.50      1.50     OK      1.72   1.27 
   MGMT     ASICVoltMonitor1         Asic 1.2V              1.20      1.21     OK      1.38   1.02 
   MGMT     ASICVoltMonitor1         Asic 3.3V              3.30      3.32     OK      3.79   2.80 
   MGMT     ASICVoltMonitor2         Vcore SPC              0.95      0.96     OK      1.09   0.81 
   MGMT     acdc-monitor2            1.8V Switch SPC        1.80      1.82     OK      2.07   1.53 
   PS1      power-mon                N/A                    0.00      0.00     FAIL    0.00   0.00 
   PS2      power-mon                vout 12V               12.00     11.98    OK      13.80  10.20
           

3. Display the fan speed and status. Run:

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   switch (config) # show fan
   -----------------------------------------------------
   Module          Device          Fan  Speed     Status
                                        (RPM)
   -----------------------------------------------------
   FAN1            FAN             F1   9305.00   OK
   FAN2            FAN             F1   8823.00   OK
   FAN3            FAN             F1   9057.00   OK
   FAN4            FAN             F1   9369.00   OK
   PS1             FAN             F1   10288.00  OK
   PS2             FAN             -    -         NOT PRESENT
           

4. Display the voltage current and status of each module in the system. Run:

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   switch (config) # show power consumers
   ------------------------------------------------------------------
   Module  Device            Sensor  Power   Voltage  Current  Status
                                     [Watts] [Volts]  [Amp]
   ------------------------------------------------------------------
   PS1     power-mon         input   37.50   12.02    3.19     OK
   MGMT    acdc-monitor2     input   -       -        -        OK
    
   Total power used : 37.50 Watts
           

The OS can access USB devices attached to switch systems. USB devices are automatically recognized and mounted upon insertion. To access a USB device for reading or writing a file, you need to provide the path to the file on the mounted USB device in the following format:

            

            
scp://username:password@hostname/var/mnt/usb1/<file name>
        

While username and password are the admin username and password and hostname is the IP of the switch.

Examples:

• To fetch an image from a USB device, run the command:

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  switch (config) # image fetch scp://username:password@hostname/var/mnt/usb1/<image filename>
          

• To save log file (my-logfile) to a USB device under the name “test_logfile” using the command “logging files”, run:

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  switch (config) # logging files upload my-logfile scp://username:password@hostname/var/mnt/usb1/test_logfile
          

• To safely remove the USB and to flush the cache, after writing (log files, for example) to a USB, use the “usb eject” command:

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  switch (config) # usb eject
          

The unit identification (UID) LED is a hardware feature used as a means of locating a specific switch system in a server room.

To activate the UID LED on a switch system, run:

            

            
switch (config) # led MGMT uid on
        

To verify the LED status, run:

            

            
switch (config) # show leds
Module   LED            Status
--------------------------------------------------------------------------
MGMT     UID            Blue
        

To deactivate the UID LED on a switch system, run:

            

            
switch (config) # led MGMT uid off
        

To reboot your switch system, run:

            

            
switch (config) # reload
        

NVIDIA Onyx supports viewing all active events on the system. The following events may be observed with the command “show system hardware events”.