Avaya Configuring APPN Services Instrukcja Użytkownika Pobierz pdf (Strona 21)

Advanced Peer-to-Peer Networking Overview

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Network Nodes

Network nodes (NNs) provide routing and networking services to other network

nodes and end nodes. These services include locating network resources,

calculating routes, and routing sessions. NNs use configured or dynamic

control-point-to-control-point (CP-CP) sessions with adjacent nodes to manage,

communicate, and exchange network topology and resource information. Any

adjacent node that does not support control point sessions (such as a low-entry

networking node) cannot participate in this exchange and must rely on static

definitions. An NN that provides control point services to end nodes is called a

network node server (NNS).

End Nodes

End nodes (ENs) have control points that allow them to register and share network

information (using CP-CP sessions) with the NNS. End nodes provide APPN

services to local users and applications and can operate independently in simple

network configurations. In most configurations, end nodes are application hosts

and workstations that register their resources with their network node server.

Low-Entry Networking Nodes

Low-entry networking nodes (LENs) are the simplest type of node in an APPN

network. LEN nodes communicate with each other as adjacent peers.

LENs do not use control point sessions and cannot exchange resource information

with an NN. Therefore, the resource information for LENs is preconfigured and

supported at the NN. LENs typically include personal computers and

workstations.

Figure 1-1

illustrates a simple APPN network with the three APPN node types.

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Avaya Configuring APPN Services Instrukcja Użytkownika Strona 21