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.
Complete PDF![[LU-SSCP Session Establishment]](img/gfx24.gif)