HP UX SNAplus2 manual PU Concentration

Introduction to SNAplus2

SNAplus2 Components

Figure 2-7 PU Concentration

The downstream computer must contain an SNA PU type 2.0 or 2.1 to support dependent LUs. For example, the downstream computer could be a PC running Microsoft SNA Server for Windows NT, or another SNAplus2 computer.

When the local SNAplus2 node uses the PU concentration feature, all the data transferred between the host and the downstream computer is routed through the local node. This enables a downstream computer to share a host connection with SNAplus2 or with other downstream computers, instead of requiring a direct link. For example, you could set up several downstream computers connected to SNAplus2 over a local token ring network, so that they could all access the same long-distance leased line from SNAplus2 to the host.

Using PU concentration also simplifies the configuration at the host, because you do not need to define the downstream computers and the communication links to them. The host configuration needs to include only the SNAplus2 computer and its host communication link; the LUs

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