
© Copyright IBM Corp. 2003. All rights reserved. 153
Chapter 11. SNA over Ethernet
This chapter was contributed by Michael Ryan of Fundamental Software, Inc.,
Fremont, California.
The following discussion illustrates how to make VTAM connections among multiple z/OS
systems on an Ethernet LAN using FLEX-ES emulated device types osasna and xcasna. A
Token Ring configuration would be nearly identical, but would define FLEX-ES device types
osasnaTR and xcasnaTR respectively.
The purpose of this document is to show z/OS FLEX-ES users how to correctly configure
SNA-over-Ethernet connections; we illustrate how to define the FLEX-ES resources, the MVS