Reference Guide
652 | Debugging and Diagnostics
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Important Points to Remember
• You can only perform offline diagnostics on an offline standalone unit. You cannot perform
diagnostics if the ports are configured 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 flash of the unit on which you performed the diagnostics.
• When offline diagnostics are complete, the unit or stack member reboots automatically.
Running Offline Diagnostics
To run offline diagnostics, follow these steps:
1. Place the unit in the offline state using the
offline stack-unit command from EXEC Privilege mode
(Figure 39-1).
Figure 39-1. Taking a Stack Unit Offline
2. Use the show system brief command from EXEC Privilege mode to confirm offline status (Figure 39-2).
Figure 39-2. Verifying the Offline/Online Status of a Stack Unit
The system reboots when the off-line diagnostics complete. This is an automatic process. A warning
message appears when you implement the offline stack-unit command.
Warning - Diagnostic execution will cause stack-unit to reboot after completion of
diags.
Proceed with Offline-Diags [confirm yes/no]:y
FTOS#offline stack-unit 2
Warning - Diagnostic execution will cause stack-unit to reboot after completion of diags.
Proceed with Offline-Diags [confirm yes/no]:y
5w6d12h: %STKUNIT0-M:CP %CHMGR-2-STACKUNIT_DOWN: Stack unit 2 down - stack unit offline
5w6d12h: %STKUNIT0-M:CP %IFMGR-1-DEL_PORT: Removed port: Tengig 2/1-48
FTOS#5w6d12h: %STKUNIT1-S:CP %IFMGR-1-DEL_PORT: Removed port: Tengig 2/1-48
FTOS#show system brief | no-more
Stack MAC : 00:1e:c9:bb:02:c4
Reload Type : normal-reload [Next boot : normal-reload]
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
------------------------------------------------------------------------------------
0 Management online MXL-10/40GbE MXL-10/40GbE 8-3-16-0 56
1 Member not present
2 Member not present
3 Member not present
4 Member not present
5 Member not present
FTOS#