> 1. A second level VM system running on the Dallas First level. > > 2. On that second level system there are two server machines which have to > be able to communicate with a z/Vos management console in Birmingham via > HTTP.
Can machines on the 2nd level system reach your existing terminals via IP when the existing VPN tunnel is up? If so, then use the 172.16 space for numbering on the 3rd level machines, create a virtual guest to act as a router for the guest lan or vsw that is hosting the 3rd level guests, and use OpenVPN to connect to that router machine. Performance probably won't be stellar, but then the Dallas people don't need to do anything.
