Users Guide

Usage Information
The Kernel core dump can be large and may take up to 5 to 30 minutes to upload. Dell Networking OS does not
overwrite application core dumps so you should delete them as necessary to conserve space on the ash; if the
ash is out of memory, the coredump is aborted. On the S-Series, if the FTP server is not 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.
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.
460 Debugging and Diagnostics