Registered ports and dynamically-allocated ports
NetBackup communicates between computers by using a combination of registered ports and dynamically-allocated ports.
These ports are registered with the Internet Assigned Numbers Authority (IANA) and are permanently assigned to specific NetBackup services. For example, the port for the NetBackup client daemon (bpcd) is 13782.
The following system configuration file can be used to override the default port numbers for each service:
On Windows: %systemroot%\system32\drivers\etc\services
On UNIX: /etc/services
Note:
It is not recommended to change the port numbers that are associated with PBX (1556 and 1557).
These ports are assigned as needed, from configurable ranges in the Port ranges host properties for NetBackup servers and clients.
In addition to the range of numbers, you can specify whether NetBackup selects a port number at random or starts at the top of the range and uses the first one available.