Establishing LU-SSCP Sessions on the HP e3000

For a dependent LU on the HP e3000 to communicate with another dependent LU, it must first have a session with the SSCP on the host system. Each LU-SSCP session is managed by SNA Transport. Figure 4-2 “LU-SSCP Session Establishment ” shows LU-SSCP session establishment with SNA Transport acting as the LU service manager. The SSCP checks the configuration on the host for the LUs defined for the HP e3000 node. The SSCP will attempt to activate each defined LU by sending an ACTivate LU (ACTLU) request. (An independent LU does not need a corresponding LU-SSCP session to help in establishing an LU-LU session, so the sequence below does not apply for an independent LU.)

Figure 4-2 LU-SSCP Session Establishment

Once an LU-SSCP session is established, a dependent LU-LU session can be initiated. The "Startup and Shutdown" chapter in the Node Manager's Guide for each SNA service contains an explanation of how LU-LU sessions are established and terminated for that service.