What Is an LU Name?

An LU is a point of access to the Systems Network Architecture (SNA) network. An LU has a name and other characteristics that are configured (formally recorded) throughout the SNA network. Sometimes this configuration is static, done by the network administrator and recorded in configuration files. Sometimes the configuration is dynamic, prepared by programs from file or user input.

To open a conversation, a client transaction program must specify both the name of the server transaction program and the name of the LU where the server transaction program can be reached. Sometimes these names are embedded in the client transaction program. In other cases, the names are stored externally to the client transaction program or are specified dynamically.