What are the RPC port requirements for agent installation using Migration Manager for Exchange?
Migration Manager for Exchange does not select which ports to use for RPC; it uses whatever ports are allowed by the system, the default for RPC being TCP port 135 plus the randomly allocated high TCP ports 1024 - 65536 (refer to Microsoft article - Service overview and network port requirements for the Windows Server system - http://support.microsoft.com/kb/832017 for details).
If firewall restrictions limit communications on these high TCP ports, it is possible to assign specific port ranges using the procedure detailed in Microsoft article - How to configure RPC dynamic port allocation to work with firewalls - http://support.microsoft.com/kb/154596.
