SNAX/APC Configuration and Management Manual

Objects for SNAX/APC
SNAX/APC Configuration and Management Manual—138787
7-20
TPN States
2. If a negative BIND response, a STOP SESSION, or an ABORT SESSION command
is received, the session ceases to exist. If the response to the BIND request is
positive, the SESSION object enters the STARTED state.
3. If a local LU receives a BIND request from a partner LU, it will accept the BIND
and start the session, bypassing the STARTING transitional state and directly
entering the STARTED state.
4. The SESSION object enters the STOPPING state when an UNBIND is sent, due to
one of the following conditions:
•
An ABORT SESSION command is issued
•
A STOP SESSION command is issued
•
A DEACTIVATE_SESSION verb is issued
•
A protocol violation is detected
5. When the UNBIND (with either a positive or negative response) is received, the
session ceases to exist.
Figure 7-7
illustrates how the different requests and commands affect the state of the
SESSION object.
TPN States
The following describes the states of the TPN object.
1. The TPN object is created by the ADD TPN command, which puts the TPN object
in the STOPPED state.
Figure 7-7. The SESSION States
106CDT .CDD
ADD Command or
ACTIVATE-SESSION
STARTED
− RSP (BIND)
Received or
ABORT or
STOP Command
STARTING
STOPPING
+RSP (BIND)
Received
ABORT Command or
STOP Command or
DEACTIVATE-SESSION
or Protocol Violations
(an UNBIND is Sent)
+/-RSP (UNBIND)
Received
BIND Request
Received
From the
PTNR-LU
Nonexisting