HP UX SNAplus2 APPN Connection Networks

SNA Terms and Concepts

Basic APPN Concepts

Figure 1-10 Definitions Needed for Direct Links from Node EN1 to Every Node in an APPN Network

If all of the nodes in the network are to support direct links to every other node, a total of 30 link definitions are needed on the six nodes in this example. In general, the number of link definitions can be calculated as n × (n−1), where n is the number of nodes in the network. In a larger network, the number of link definitions quickly becomes unwieldy. Increasing the number of link definitions between network nodes also increases the number of TDUs flowing through the network, which can degrade network performance.

APPN connection networks provide a solution to this problem.

APPN Connection Networks

For APPN networks attached to a shared-access transport facility (SATF), an APPN connection network greatly reduces the number of link definitions needed to support direct connectivity between nodes in the network. In a connection network, an APPN end node needs to configure

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