34 EFS Systems on a Linux Base: Additional Topics
In addition to these device types, FLEX-ES emulates a number of other types that were
typically used with mid-range VSE/ESA and older VM systems. These are detailed in FSI
documentation (FSIMM310: Resource Language Reference).
When would you select these various types?
The choice between Ethernet and token ring version is obvious.
A 3172 Ethernet device requires explicit multicast IP addresses in the FLEX-ES definitions
whereas osa and xca types can have a multicast address set by the host (z/OS, for
example). Using the osa or xca definition and setting multicast addresses from the S/390
host TCP/IP specifications reduces the possibility of mis-coding in the FLEX-ES
specifications requirin ...