Users Guide

packets are transmitted through those components. These diagnostics also perform snake tests using virtual local area network
(VLAN) congurations.
NOTE: Diagnostic is not allowed in Stacking mode, including member stacking. Avoid stacking before executing the diagnostic
tests in the chassis.
Important Points to Remember
• You can only perform oine diagnostics on an oine standalone unit. You cannot perform diagnostics if the ports are congured in a
stacking group. Remove the port(s) from the stacking group before executing the diagnostic test.
• Diagnostics only test connectivity, not the entire data path.
• Diagnostic results are stored on the ash of the unit on which you performed the diagnostics.
• When oine diagnostics are complete, the unit or stack member reboots automatically.
Running Oine Diagnostics
To run oine diagnostics, use the following commands.
For more information, refer to the examples following the steps.
1 Place the unit in the oine state.
EXEC Privilege mode
offline stack-unit
You cannot enter this command on a MASTER or Standby stack unit.
NOTE
: The system reboots when the oine diagnostics complete. This is an automatic process. The following warning
message appears when you implement the offline stack-unit command:
Warning - offline of unit will bring down all the protocols and
the unit will be operationally down, except for running Diagnostics.
Please make sure that stacking/fanout not configured for Diagnostics execution.
Also reboot/online command is necessary for normal operation after the offline command
is issued.
Proceed with Offline [confirm yes/no]:
Dell#offline stack-unit 0
Warning - offline of unit will bring down all the protocols and
the unit will be operationally down, except for running Diagnostics.
Please make sure that stacking/fanout not configured for Diagnostics execution.
Also reboot/online command is necessary for normal operation after the offline command is
issued.
Proceed with Offline [confirm yes/no]:yes
Dell#
2 Conrm the oine status.
EXEC Privilege mode
show system brief
Dell#show system brief
Stack MAC : 00:1e:c9:de:03:7b
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
------------------------------------------------------------------------------------
0 Member not present
1 Management online I/O-Aggregator I/O-Aggregator 8-3-17-38 56
2 Member not present
302
Debugging and Diagnostics