Each probe uses a different method to acquire data. Which method the probe uses depends on the target system from which it receives data.
The Probe for Nokia Network Functions Manager for Packet acquires current alarms and downtime alarms (if there is a loss of connection) by connecting to the HTTP port on the Nokia NFM-P server. The probe can also obtain alarms as they are generated by subscribing to the Java™ Messaging Service (JMS) running on the Nokia NFM-P server.
The probe obtains data from Nokia NFM-P as follows:
- The probe connects to the machine on which the Nokia NFM-P server is running specified by the Host property.
- If the InitialResync property is set to true,
the probe connects to the HTTPPort, logs onto
the NFM-P server using the values specified for the NfmpServerUserName and NfmpServerPassword properties,
and sends an HTTP request to perform a resynchronization.
The Nokia NFM-P server sends all currently active alarms.
- The probe then connects to the EJBPort and
subscribes to the JMS topic specified by the JmsTopic property
to receive new events as they are generated.Note: You can specify filter criteria that the probe sends with the request using the JmsFilter property.
The Nokia NFM-P server sends all events that meet the filter criteria to the probe.
- The probe extracts event information using a SAX parser and sends it to the ObjectServer.
- If the probe received a
TerminateClientSessionalarm from the Nokia NFM-P server, the probe ends the JMS session and shuts down.
Data acquisition is described in the following topics: