Configuring SNAplus2 for Enterprise Extender

Configuring SNAplus2 for Enterprise Extender White Paper 32
Appendix A – Concepts and Terminology
This section is a brief and non exhaustive introduction to the concepts and
terminology used in this document, including APPN and HPR. For a more
complete description of APPN and HPR, refer to the reference appendix.
Session
A session is a logical connection between two network accessible units (NAUs).
The most common example of an NAU is a Logical Unit (see below).
Physical Unit (PU)
The component that manages and monitors the resources (such as attached
links and adjacent link stations) associated with a node. This term applies to
non-APPN nodes only.
Logical Unit (LU)
A Logical Unit (LU) is a port through which an application or end user accesses
the SNA network in order to communicate with another application or end user.
An LU may be capable of supporting multiple and parallel sessions with other
LUs.
Dependent LU
A Dependent LU is an LU that requires assistance from a mainframe to
establish a session with another LU. These are also sometimes referred to as
“old LUs”.
Independent LU
An Independent LU is an LU that can establish a session with another LU
without the assistance of a mainframe.
Control Point
A Control point is an APPN NAU that manages network resources within its
domain, controlling resource activation, deactivation, and status monitoring
.
APPN
Advanced Peer-to-Peer Networking (APPN) is a network architecture that
supports distributed network nodes. It makes networks easier to configure and
use, provides centralized network management, and supports flexible
connectivity.