Maximum Dynamic Server (-maxport)

Use Maximum Dynamic Server (-maxport) to specify the highest port number in a specified range of port numbers accessible to a client.

Operating system and syntax UNIX / linux Windows -maxport n
Use with Maximum value Minimum value Single-user default Multi-user default
Database Server 65,535 1,025 — 2,000
Operating system and syntax Windows NT -maxport n
Use with Maximum value Minimum value Single-user default Multi-user default
Database Server 65,535 1,025 — 5,000
n
The port number that is the highest in a specified range.

Use Maximum Dynamic Server (-maxport) to specify the highest port number in a specified range of port numbers accessible to a client. You specify the lowest port number with the -minport parameter. The range of port numbers defined by the -maxport and -minport parameters provides client access to an OpenEdge server that is behind a firewall. Some operating systems choose transient client ports in the 32,768-to-65,535 range. Choosing a port in this range might produce unwanted results.

The Maximum Dynamic Server (-maxport) parameter may be modified while your database is online using PROMON or through the _DbParams VST. This change will only take effect on the primary broker and any newly spawned servers. Online changes to existing secondary brokers will require a restart.

Note: Use the proserve db -S parameter at the database broker startup to configure the -maxport. For example, 
proserve db -S demosv1 -N tcp -H myhost -minport 4000 -maxport 4040

If you do not set the proserve db -S parameter at database broker startup, then -maxport is not applicable and its value is reported as 0 in the log file report.