Reference Guide

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 Management offline PE-FN-410S-IOA PE-FN-410S-IOA 1-0(0-1862) 12
1 Member not present
2 Member not present
3 Member not present
4 Member not present
5 Member not present
Dell#
Debugging and Diagnostics
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