+.
+.PP
+Open vSwitch has several log levels. The highest-severity log level
+is:
+.
+.IP "\fBOFF\fR"
+No message is ever logged at this level, so setting a logging
+facility's log level to \fBOFF\fR disables logging to that facility.
+.
+.PP
+The following log levels, in order of descending severity, are enabled
+by default:
+.
+.IP "\fBEMER\f"
+A major failure forced a process to abort.
+.IP "\fBERR\fR"
+A high-level operation or a subsystem failed. Attention is
+warranted.
+.IP "\fBWARN\fR"
+A low-level operation failed, but higher-level subsystems may be able
+to recover.
+.IP "\fBINFO\fR"
+Information that may be useful in retrospect when investigating
+a problem.
+.IP "\fBDBG\fR"
+Information useful only to someone with intricate knowledge of the
+system, or that would commonly cause too-voluminous log output. Log
+messages at this level are not logged by default.
+.
+.PP