0306 - SNM Overload Onset
This message indicates that network management messages are approaching the threshold where they will be discarded.
        Example        
      
                     RLGHNCXA21W 00-02-07 11:02:30 EST  EAGLE 35.0.0
*  0100.0306   *   CARD 1113 OAM        SNM Overload OnsetAlarm Level: Minor.
Recovery
Check for problems in the network that would cause excessive network management messages to be broadcast.