When the Alarm Management System receives an unsolicited SNMP trap from an agent, it locates the appropriate alarm template for the trap-type object that is defined in the MIB of the device. If the alarm template is not available, the Alarm Management System checks the IgnoreUnknownTrap flag in the installation_volume\installation_directory\novell zenworks\mms\mwserver\properties\alarmmanager.properties file. If the flag value is set to True, the alarm is ignored. If the flag value is set to False, the alarm is archived in the database as an unknown trap. If the flag value is set to Yes, the alarm is ignored. If the flag value is set to No, the alarm is archived in the database as an unknown trap. The default value of the flag is set to Yes.
For the alarm to be recognized, you need to add the MIB of the device to the MIB Pool on the management server. The MIB contains the trap definitions for traps sent from the device. If the trap-type object is undefined by the Alarm Management System, it cannot resolve the type of alarm received from the trap object identifier (OID), and the alarm is unknown. See Section 26.0, Using the MIB Tools for information on compiling MIBs and adding MIBs to the MIB Pool.
If you add a new device to your network, you must add the MIB to the MIB Pool. If the SNMP agent is a proxy agent hosted on a station and the software is updated, you need to update the MIB in the MIB Pool.