z/OS Communications Server: SNA Network Implementation Guide
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Maintaining address structures

z/OS Communications Server: SNA Network Implementation Guide
SC27-3672-01

The network addresses assigned to nodes (host processors or communication controllers) in one network can be duplicated in other connected networks, as can the following subarea addressing capabilities:
  • Extended subarea addressing
  • Extended network addressing
  • Nonextended network addressing (MAXSUBA)

The maximum number of addressable network nodes or subareas does not have to be consistent or compatible across the interconnected networks.

SNA network interconnection (SNI) eliminates the architectural requirement that interconnected networks must use a common network address structure with all unique network addresses. Instead, it permits each network to establish its own network addressing capabilities.

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