About OpsCenter server to NetBackup master server (NBSL) communication
OpsCenter requires the NetBackup Service Layer (NBSL) to be present on all managed master servers.
The OpsCenter server software collects data from NBSL in the following ways:
Initial data load
Listening for change notifications or events
Whenever OpsCenter server software starts, when data collection for a master server is enabled or when a master server is added in OpsCenter, the OpsCenter server starts collecting all the available data from NetBackup master server into the OpsCenter database using NBSL. The initial data load happens serially for each data type. As soon as the initial data load is complete, the OpsCenter server software listens to the notifications that are sent by NBSL for any change in NetBackup data. Then OpsCenter updates the OpsCenter database.
Veritas Private Branch Exchange (PBX) is used for communication and requires a port opened on the OpsCenter server and the NetBackup master server for input and output. The default PBX port is 1556.