Resolution: If your Brokers do not log in to the Director, check the Manager logs for a message similar to the following:
BindException while attempting to create a ServerSocket at myaddress:2000
This means another process has port 2000 open, which is used for initial communication between the Broker and Director. If it is another Director, or another process that cannot be stopped, that port number must be changed on both the Director and Brokers to a non-conflicting port. Bring down the manager and use netstat in order to locate the offending process.