HP 3000 Manuals HP 3000 Manuals
Establishing LU-SSCP Sessions on the HP 3000
For a dependent LU on the HP 3000 to communicate with another dependent
LU, it must first have a session with the SSCPon the host system. Each
LU-SSCP session is managed by SNA Transport. Figure 4-2 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 3000 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.)
IBM Host HP 3000 (T2.0 Node)
For every LU configured on
host, SSCP sends
ACTivate LU request ACTLU
- - - - - ->
SNA Transport checks configuration
file for LUs; sends positive
responses only for LUs
found
in configuration file
(+ response)
<- - - - - -
(LU-SSCP session established)
Figure 4-2. LU-SSCP Session Establishment
Once an LU-SSCP session is established, a dependent LU-LU sessioncan 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 terminatedfor that service.