z/OS Communications Server: SNA Diagnosis Vol 1, Techniques and Procedures
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Locate resource: EN to NN to subarea network

z/OS Communications Server: SNA Diagnosis Vol 1, Techniques and Procedures
GC27-3667-00

Figure 1. Locate resource: EN to NN to subarea network
Diagram of locate resource: end node (EN) to network node (NN) to subarea network.
  1. The end node sends a search request for a target resource to the network node server. As network node server of the originating LU, NN1 looks for the target resource in the directory database. NN1 has no knowledge of the target resource in the directory database.
  2. The APPN control point (CP) requests that the subarea SSCP check for information about the location of the resource.
  3. The subarea SSCP replies that an entry for the target resource is found.
  4. The APPN CP requests that the subarea SSCP send the search request to the target resource.
  5. The request is sent to the owning SSCP.
  6. The owning SSCP indicates that it owns the target resource.
  7. The subarea SSCP replies to the APPN CP that the target resource is found.
  8. NN1 returns a positive reply to EN1.
Parent topic: Locate resource flows

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