Service Manual

reachable, the application coredump is aborted. Dell Networking OS completes the coredump process and
wait until the upload is complete before rebooting the system.
Oine Diagnostic Commands
The oine diagnostics test suite is useful for isolating faults and debugging hardware. While tests are running, Dell Networking OS
results are saved as a text le (TestReport-SU-X.txt) in the ash directory. This
show file command is available only on master
and standby.
Important Points to Remember
• Oine diagnostics can only be run when the unit is oine.
• You can only run oine diagnostics on a unit to which you are connected via the console. In other words, you cannot run
diagnostics on a unit to which you are connected to via a stacking link.
• The system stores the diagnostic results in the ash directory (TestReport-SU-X.txt). The system displays the following message
after the diagnostic test is over.
05:37:17 : Diagnostic test results are stored on file: flash:/TestReport-SU-1.txt
05:37:22: %S3048-ON:1 %DIAGAGT-6-DA_DIAG_DONE: Diags finished on stack-unit 1
• Diagnostics only test connectivity, not the entire data path.
diag stack-unit
Run oine diagnostics on a stack unit.
Syntax
diag stack-unit number [alllevels | level0 | level1 | level2] verbose
[testname | no-reboot]
Parameters
number
Enter the stack-unit id.
The range is from 1 to 6.
alllevels Enter the keyword alllevels to run the complete set of oine diagnostic tests.
level0 Enter the keyword level0 to run Level 0 diagnostics. Level 0 diagnostics check
for the presence of various components and perform essential path verications. In
addition, they verify the identication registers of the components on the board.
level1 Enter the keyword Level1 to run Level 1 diagnostics. Level 1 diagnostics is a
smaller set of diagnostic tests with support for automatic partitioning. They
perform status/self test for all the components on the board and test their
registers for appropriate values. In addition, they perform extensive tests on
memory devices (for example, SDRAM, ash, NVRAM, EEPROM, and CPLD)
wherever possible. There are no tests on 10G links. At this level, stack ports are
shut down automatically.
level2 Enter the keyword level2 to run Level 2 diagnostics. Level 2 diagnostics are a full
set of diagnostic tests with no support for automatic partitioning. Level 2
diagnostics are used primarily for on-board loopback tests and more extensive
component diagnostics. Various components on the board are put into Loopback
mode and test packets are transmitted through those components. These
diagnostics also perform snake tests using VLAN congurations. To test 10G links,
physically remove the unit from the stack.
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Debugging and Diagnostics