Thank you so much for the detailed help. We don't need VM or LINUX to talk to that z/OS. We have many Z/OS LPARS (none under VM). Yes, that z/OS system is used only to provide service to the Linux guests. The VM and Linux systems are all on the same hipersockets LAN and the Z/OS system has the OSA. We do not have any traffic to speak of going thru VM. I think all the traffic is between the Linux guests and platforms outside the machine like UNIX.
We probably could take that OSA off that Z/OS LPAR and run it directly into Z/VM and run this vswitch thing to provide access to the Linux guests. I'll know more next week when I see a network diagram and meet with my MVS guy. I think I still need to approach this thing from a higher level before I get down to the specifics. I may have asked for the details too soon. Thanks, Bob Heerdink
