On Thursday, 12/08/2005 at 08:22 EST, "Mrohs, Ray" <[EMAIL PROTECTED]> wrote: > I have been asked to comment on the readiness of our z800 to migrate to IPv6. > The environment includes z/VM 5.1, OSA Express/Express 2, VSWITCH, Suse SLES8 > and SLES9, VM TCPIP for tn3270, and RSCS for network printing. From what I can > tell, the VM TCPIP stack is only partially capable. Does anyone have any real > life experience or done testing in a similar environment? I'd like to know > what the issues are. Thanks. z/VM 5.1 has IPv6 C [IUCV] socket support, but none of the IBM-provided C applications have been changed to exploit it. And the TN3270 server is a Pascal application so it cannot be made to use IPv6 until we add IPv6 to the Pascal API. RSCS has not been updated for IPv6.
A layer 2 VSWITCH [TYPE ETHERNET] will operate with IPv6 guests. However, the VM TCP/IP stack itself cannot connect to or use a layer 2 VSWITCH. Bottom line: Using only software from IBM, your Linux guests can operate with IPv6, but VM TCP/IP will need to be connected to a local IPv4 network. I believe there are appliances (hardware or Linux guest-based) that can bridge IPv6 and IPv4 networks. Qualifer: I have no real life experience doing this. Alan Altmark z/VM Development IBM Endicott
