White Papers

NOTE: You must disable logging coredump before you designate a new server destination for your
core dumps.
Offline Diagnostic Commands
The offline diagnostics test suite is useful for isolating faults and debugging hardware. While tests are running, Dell EMC
Networking OS results are saved as a text file (TestReport-SU-X.txt) in the flash directory. This show file command is
available only on master and standby.
Important Points to Remember
● Offline diagnostics can only be run when the unit is offline.
● You can only run offline 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.
● Diagnostic results are printed to the screen. Dell EMC Networking OS does not write them to memory.
● Diagnostics only test connectivity, not the entire data path.
diag
Run offline diagnostics on all CPUs or on a specified CPU in the switch.
Syntax
diag {all | {{cp | rp | linecard} unit-id} [alllevels | level0 | level1 |
level2] [interactive] [testname name] [terminate]
Parameters
all Enter the keyword all to run offline diagnostic tests on all Z9500 CPUs, including
the Control Processor, Route Processor, and line cards.
cp unit-id Enter the cp unit-id parameters to run offline diagnostic tests only on the
Control Processor CPU. The Control Processor CPU ID is 0.
rp unit-id Enter the keyword rp unit-id parameters to run offline diagnostic tests only on
the Route Processor CPU. The Route Processor CPU ID is 0.
linecard unit-id Enter the linecard unit-id parameters to run offline diagnostic tests only
on a specified line card. The range of line-card CPU IDs is from 0 to 2. Each line-
card CPU processes packets on the corresponding Z9500 line card; for example,
line-card CPU 1 processes packets on line card 1.
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, 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.
interactive Enter the keyword interactive to run offline diagnostics in interactive mode.
Debugging and Diagnostics 531