Stopping an LU-LU Session by an SLU

An SLU can end an LU-LU session in either of two ways:
  • By sending a Terminate-Self (TERMSELF) command or an UNBIND command. Either command results in an immediate ending.
  • By sending a Request Shutdown (RSHUTD) command. This command solicits an UNBIND from the PLU.

To end a session immediately, the SLU sends the TERMSELF command to the SSCP, which checks whether the named LUA application program is the one participating in this session. If it is, the SSCP sends a positive, nondata response. Depending on the host SNA version being used, the SSCP can send a CLEAR command, which purges all messages from the LU-LU session, and can then send an UNBIND command to end the session. Alternatively, the SLU can send an UNBIND command to the PLU.