TP-Link SafeStream TL-ER6020 User Manual page 131

The Logs of switch are classified into the following eight levels.
Severity
Emergency
Alert
Critical
Error
Warning
Notice
Informational
Debug
Level Description
The system is unusable.
0
Action must be taken immediately.
1
Critical conditions
2
Error conditions
3
Warnings conditions
4
Normal but significant conditions
5
Informational messages
6
Debug-level messages
7
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