Locate resource: Directory search verification reduction

Figure 1. Locate resource: Directory search verification reduction

The subarea SSCP requests information about a resource and does not require the APPN CP to verify the location of the resource.
The end node sends a search request for the target resource to its network node server. Only network node servers, when requested by the origin node, can respond to search requests without first verifying the location of the resource.
NN1 looks for the target resource in its directory database. NN1 has knowledge in its directory that the target resource resides on NN3. Further, NN1 has information that allows the search to succeed, without verifying the location of the target resource. Therefore, NN1 returns a positive reply on behalf of NN3.
The APPN CP replies to the subarea SSCP.