Matt, You can get some idea of the system level using the CP command:
CP QUERY CPLEVEL That should (at least) reassure you that you are using z/VM Version 4 Release 2.0 and it will list a service level that indicates which service tape has been installed. CP Guest LAN support on VM 4.2.0 was enabled by CP APAR VM62938 (and TCPIP APAR PQ51738). Use the following CP command to find out if VM62938 is installed: CP QUERY VMLAN If the response starts out with something like this: VMLAN maintenance level: Latest Service: VM62938 you have the necessary CP support to define virtual HiperSockets networks and adapters. Regards, Dennis Musselwhite ([EMAIL PROTECTED]) IBM Corporation -- z/VM Development -- CP Network Simulation