HP -UX SNAplus2 Manual de usuario descargar pdf (Pagina 35)

Chapter 1 35

SNA Terms and Concepts

Basic SNA Concepts

Operating System) use LU 0. Current releases of these

products also support LU 6.2 communication, which is

the preferred protocol for new applications.

NOTE For information about the data streams used by SNA logical units, refer

to Systems Network Architecture Technical Reference.

Control Points

A control point (CP) is an NAU that manages network resources within

its domain, controlling resource activation, deactivation, and status

monitoring. The CP manages both physical resources such as links, and

logical information such as network addresses.

SNA deﬁnes the following types of network control points:

System services control point

On a type 5 node, the CP is called a system services

control point (SSCP). It manages and controls the

network resources in a subarea network. For example,

an SSCP can use a directory of network resources to

locate a speciﬁc LU under its control, and can establish

communication between two LUs in its domain. An

SSCP can also cooperate with other SSCPs to establish

connectivity between LUs in different subarea

domains.

The SSCP also provides an interface to network

operators at the host system, who can inspect and

control resources in the network.

Physical unit control point

On type 4 nodes and type 2.0 nodes in a subarea

network, the control point is called a physical unit

control point (PUCP).

Control point

On type 2.1 nodes, the control point provides both PU

and LU functions, such as activating local link stations,

interacting with a local operator, and managing local

resources. It can also provide network services, such as

partner LU location and route selection for local LUs.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 397 398

Sin comentarios

HP -UX SNAplus2 Manual de usuario Pagina 35