Service Manual

diag stack-unit
Run offline diagnostics on a stack unit.
Syntax
diag stack-unit number [alllevels | level0 | level1 | level2] verbose no-reboot
Parameters
number Enter the stack-unit number. The range is from 0 to 5.
alllevels Enter the keyword alllevels to run the complete set of offline 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 verifications. In addition,
they verify the identification 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, flash,
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 configurations. To test 10G links, physically remove the unit from the stack.
verbose Enter the keyword verbose to run the diagnostic in Verbose mode. Verbose mode gives
more information in the output than Standard mode.
no-reboot Enter the keyword no-reboot to avoid automatic rebooting of the chassis after
completion of diagnostic execution. Generally, this option is never used because if you run
the diagnostic once again without rebooting the chassis, it may cause an issue with the
diagnostic results..
Defaults none
Command Modes EXEC Privilege
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Example
Dell#diag stack-unit 0 level0
Warning - diagnostic execution will cause multiple link flaps on the peer side
- advisable to shut directly connected ports
Proceed with Diags [confirm yes/no]: yes
FTOS#Dec 15 04:14:07: %MXL-10/40GbE:0 %DIAGAGT-6-DA_DIAG_STARTED: Starting
diags on stack unit 0
00:12:10 : System may take additional time for Driver Init.
00:12:10 : Approximate time to complete the Diags ... 6 Mins
00:13:53 : Diagnostic test results are stored on file: flash:/TestReport-
SU-0.txt
Diags completed... Rebooting the system now!!!
Dec 15 04:15:54: %MXL-10/40GbE:0 %DIAGAGT-6-DA_DIAG_DONE: Diags finished on
400 Debugging and Diagnostics