Specifications

Connect the SFP+ ports with an external Loopback cable.
• PRBS MAC level test ./nputool –i –t 6
• PRBS EXT level test “./nputool –i –t 7
NPU temperature
Show the current NPU temperature.
• nputool –i –s temp
• nputool --init --show temp
root@dell-diag-os:~# nputool -i -s temp
DMA pool size: 16777216
PCI unit 0: Dev 0x8375, Rev 0x11, Chip BCM88375_B0, Driver BCM88375_B0
sysconf_probe successful
global_sal_config successful
*** 1 BCM devices are detected
Diag NPU initialization over
NPU 0 Temperature
----------------------------
monitor current peak
----------------------------
0 41.8 44.2
1 41.3 44.7
2 36.4 38.8
3 39.8 43.2
----------------------------
Average 39.8, maximum peak 44.7
root@dell-diag-os:~# nputool -init -show temp
DMA pool size: 16777216
PCI unit 0: Dev 0x8375, Rev 0x11, Chip BCM88375_B0, Driver BCM88375_B0
sysconf_probe successful
global_sal_config successful
*** 1 BCM devices are detected
Diag NPU initialization over
NPU 0 Temperature
----------------------------
monitor current peak
----------------------------
0 42.3 44.2
1 40.8 44.2
2 35.9 38.8
3 40.8 43.2
----------------------------
Average 39.9, maximum peak 44.2
root@dell-diag-os:~#
Debugging
With trac commands, use the –d option, which displays the BCM.0> shell. To check counters and if the link is up, use the ps and show
c
commands.
nvramtool
To read and write the NVRAM bits that the BIOS uses to control testing and the bits for the EDA tools, use the nvramtool.
The NVRAM is an area, usually in a battery backed-up device such as an RTC chip, that allows the writing of bits which do not change
across reboots or power cycles. These bits are used to control how devices boot and how the tests are performed. The nvramtool
controls both the BIOS and EDA for testing. The bits are not common across platforms and are dened in the conguration le. When using
this tool, you must write the correct bits because the tool does not know the details of the registers it is writing. The nvramtool can
display the bit-level detail in the NVRAM registers, depending on how you dene it in the conguration le.
Dell EMC DiagOS tools
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