Visara FEP-4600 Planning Guide - Manual (Page 42)

Chapter 3. Support of PU 2.1 Nodes
3-6 707117-003
If VTAM is configured as a NN and if any of the PU 2.1 nodes attached directly to the
FEP-4600 is a NN, and other PU 2.1 nodes have direct network connections to it, then it
may not be necessary to define those other PU 2.1 nodes directly to VTAM in the gen.
The PU 2.1 NN may be capable of providing the pathway information to VTAM for
them. Refer to the illustration below. In this case only the Visara 1174 in the diagram
would require a definition in the IO gen and VTAM gens.
FEP-4600
IBM S390 IBM z990
Director
APPN EN
APPN LEN
Visara 1174
APPN NN
APPN NN
All APPN Traffic