Network infrastructure

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The configuration examples assume that all the systems are connected to a Token Ring network with the exception of z/OS and VSE/ESA, which communicate via a 3745 (or equivalent) that is attached to the Token Ring, and Solaris, which is on an adjacent local area network (LAN) also attached to the 3745.

It is also assumed that, for SNA, all the required definitions in VTAM and network control program (NCP) are in place and activated for the LAN-attached platforms to communicate over the wide area network (WAN).

Similarly, for TCP, it is assumed that nameserver function is available, either via a domain nameserver or via locally held tables (for example a host file).