How to Receive SNMP informs in OpManager?
SNMP Notifications can be sent as Traps or Inform requests. Traps are unreliable because the Manager does not send any acknowledgment on receiving the Trap. So, the Agent cannot determine whether the Trap was received by the Manager or not. However, an SNMP Manager that receives an Inform request acknowledges the message with an SNMP response PDU. If the Manager does not receive an inform request, it does not send a response. If the Agent does not receive a response at all, the inform request can be sent again.
OpManager can acknowledge SNMP inform by following these steps.
4) Save this file
1)Open /OpManager/Conf/NmsProcessesBE.conf in a wordpad.
2)Search for this entry
Add this text NEED_INFORM_ACK true at the end of this. So it becomesPROCESS com.adventnet.nms.eventdb.EventMgrARGS ALERT_OBJECTS_IN_MEMORY 0 ALERT_LOCK true ANNOTATION_TABLE_SIZE 500 ALERT_WINDOW_SIZE 10000 ACTION_ON_DELETING_MO delete ALERTS_USER_PROPERTY none EVENT_WINDOW_SIZE 10000 EVENT_JDBC true ON_DELETING_ALERT_DELETE both AUTHORIZATION true GROUP_ALERTS_MODE none ALERT_TO_MANAGEDOBJECT_PROPOGATION max SAVE_DIR state ALERT_JDBC true CREATE_ALERT_HISTORY false GRACEFUL_SHUT_DOWN false DROP_TRAP_WHILE_UNMANAGED true ALERTS_USER_PROPERTY latest CLEAN_EVENT_INTERVAL 30 ALERT_DELETE_INTERVAL -1
PROCESS com.adventnet.nms.eventdb.EventMgrARGS ALERT_OBJECTS_IN_MEMORY 0 ALERT_LOCK true ANNOTATION_TABLE_SIZE 500 ALERT_WINDOW_SIZE 10000 ACTION_ON_DELETING_MO delete ALERTS_USER_PROPERTY none EVENT_WINDOW_SIZE 10000 EVENT_JDBC true ON_DELETING_ALERT_DELETE both AUTHORIZATION true GROUP_ALERTS_MODE none ALERT_TO_MANAGEDOBJECT_PROPOGATION max SAVE_DIR state ALERT_JDBC true CREATE_ALERT_HISTORY false GRACEFUL_SHUT_DOWN false DROP_TRAP_WHILE_UNMANAGED true ALERTS_USER_PROPERTY latest CLEAN_EVENT_INTERVAL 30 ALERT_DELETE_INTERVAL -1 NEED_INFORM_ACK true
4) Save this file
5)Stop and Start OpManager
Note: Only SNMP v2 informs are supported now.
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