Aruba Switch Red Light Troubleshooting Summary
Log Insight
Log Entry:
I 06/10/25 14:03:42 03125 mgr: ST2-CMDR: Startup configuration changed by unknown.
New seq. number 282
This log entry indicates that the switch’s startup configuration was modified, but not via a
recognized user login. It was likely changed by a process or due to a synchronization event
in the stack. The sequence number increase confirms a config version update.
Interpretation
This message typically occurs on Aruba stackable switches like the 3810M when:
- The configuration changes on the stack commander.
- The change wasn’t made by a known authenticated user.
- There may be a synchronization issue across the stack.
Potential Causes of Red Light
1. Stack synchronization failure
2. Misconfiguration or corrupt startup config
3. Unauthorized or system-driven config change
4. Hardware issue in one of the stack members
Recommended Actions (No CLI Access)
1. Identify the stack member with the red LED.
2. Power cycle the affected unit (turn off, wait 20s, then turn back on).
3. If that fails, reboot the full stack (commander first, then members).
4. Observe if the red light clears after boot.
5. If issue persists, connect via serial console and check:
- show stack
- show system
- show log -r
Next Steps
If console access is regained, gather system logs and stack status to determine whether:
- The configuration needs to be resynced
- A firmware recovery is required
- Hardware replacement is necessary