Parameter: groupmcastaddress

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.




This parameter defines the TCP/IP address 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 TCP/IP address consistent with that protocol. 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 TCP/IP address 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?


Default value


Possible values

Any TCP/IP address valid for UDP multicasting (addresses to, inclusive.)

Example usage

Initialization file:


Related topics

Servlet implementation
System parameters

Related topics

Enter a parameter in the sm.ini file

Related topics

Connection parameters
Servlet parameters