Parameter: groupport

Startup parameters change the behavior of the Service Manager server. You can always set a startup parameter from the server's operating system command prompt.

Parameter

groupport

Description

This parameter defines the communications port that servlet container processes can use to communicate with the load balancer process in a horizontal scaling implementation. The servlet container processes talk to one another using User Datagram Protocol (UDP) multicasting and must use a common communications port available on all member systems of the virtual group. You must enable UDP multicasting traffic on your network to use Service Manager virtual grouping.

It is best practice to place this parameter in the Service Manager initialization file so that all servlet container processes started on the same host share the communications port specified by this parameter.

Valid if set from

Server's operating system command prompt

Initialization file (sm.ini)

Requires restart of the Service Manager server?

Yes

Default value

12346

Possible values

Any communications port valid for UDP multicasting

Example usage

Initialization file:

groupname:mygroup1
groupmcastaddress:224.0.1.255
groupport:13100

Related topics

Servlet implementation
System parameters

Related topics

Enter a parameter in the sm.ini file

Related topics

Connection parameters
Servlet parameters