Installing and Administering OSI Transport Services

Chapter 2 77

Planning Your Network

Determine the Network Structure

At this point, you have identiﬁed the nodes and the services you will be

using for your network. The next step is to draw a network map to

visualize the structure of your network.

If this is an addition to an existing network, update the existing network

map, otherwise, follow these steps to draw your map. A simple example

of a network map is shown below.

• Identify the subnetworks and nodes in your network.

• Assign unique names to each node and subnetwork and other pieces

of network equipment.

• Draw the subnetworks, using lines for LANs and clouds for X.25.

• Place each node on the subnetworks you’ve drawn.

• Place any other pieces of network equipment on the diagram (for

example, routers, repeaters, X.25 switches, and analyzers).

• Identify any non-OSI nodes or network equipment that may be

sharing the network.

Figure 2-1

Node

Squirrel

Node

Boris

Node

Moose

Node

Natasha

Node

Dudley

Node

Nell

CLNS/802.3 Subnetwork

'hpclns8023'

'hpclnsx25'

CLNS / X.25

Subnetwork