The isCOBOL LoadBalancer has the following usage:

While most of the command line options are optional, configuration_file is mandatory. This file is a Java property file whose entries are in the format property=value. The isCOBOL LoadBalancer configuration is explained in Setting up the isCOBOL LoadBalancer.

When a TCP connection is closed the connection may remain in a timeout state for a period of time after the connection is closed (typically known as the TIME_WAIT state or 2MSL wait state). For applications using a well known socket address or port it may not be possible to bind a socket to the required SocketAddress if there is a connection in the timeout state involving the socket address or port. Use the –force option to achieve it.

A correct startup will produce an output similar to this:

Host name and port can also be set in the configuration file, as shown below.