gtps2m1eACF/SNA Data Communications Reference

Session Manager

The session manager is responsible for insuring that the underlying LU-LU session needed for a conversation is available. When an ALLOCATE request is issued, the session manager sends out a LOCATE/CDINIT to initiate another session if there is no session active and bound or available for the conversation, and the session limit has not been reached.

Note:
There is 1 exception to this: PU 2.1 secondary LU (SLU) thread sessions cannot be activated from the TPF side.

Initiating a Session

If you want to initiate a session before issuing an ALLOCATE request, you can use 1 of the following ways:

LU 6.2 BIND Command

See IBM Systems Network Architecture Format and Protocol Reference Manual: Architecture Logic for LU Type 6.2 for information about the LU 6.2 BIND command.

Session Termination

Sessions are terminated with an UNBIND command. Session termination can be requested in the following ways:

For details on the ZNETW and ZNCNS commands, see the "ACF/SNA Communications Commands" in TPF Operations.