Reference Guide

1554 | S-Series Debugging and Diagnostics
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diag stack-unit
s
Run offline diagnostics on a stack unit.
Syntax
diag stack-unit number
[alllevels | level0 | level1 | level2] verbose testname
Parameters
Defaults
None
Command Modes
EXEC Privilege
Command
History
offline stack-unit
s z
Place a stack unit in the offline state.
Syntax
offline
stack-unit number
Parameters
Defaults
None
number
Enter the stack-unit number.
Range: 0 to 7
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
(e.g., 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 is 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 loop back mode, and test
packets are transmitted through those components. These diagnostics also perform
snake tests using VLAN configurations. You must physically remove the unit from
the stack to test 10G links.
verbose
Enter the keyword verbose to run the diagnostic in verbose mode. Verbose mode
gives more information in the output than standard mode.
testname
Enter the keyword level2 to run a specific test case. Enclose the test case name in
double quotes (“ “). For example:
diag stack-unit 1 level1 testname “first”
Version 8.3.1.0 Introduced the verbose option.
Version 7.7.1.0 Introduced on S-Series
number
Enter the stack unit number.
Range: 0 to 7