Installing and Administering LAN/9000 Software

136 Chapter6

Network Addressing

Internet Addresses

Assigning Network Addresses

To assign network addresses, follow these rules:

• You must have a network address for each logical network.

• If your system is attached to more than one physical network via a

gateway, the network addresses of these interfaces may not be the

same. Refer to Table 6-3 below for a gateway example.

• All nodes in the same network, however, must have the same network

address.

• Do not assign the network addresses 0 or 255 (Class A), 0.0 or

255.255 (Class B), or 0.0.0 or 255.255.255 (Class C) to any network.

Those addresses are reserved .

• Do not assign Class A network address 127. This address is reserved

for the loopback interface.

Figure 6-3 Assigning Network Addresses

Assigning Host Addresses

Host addresses must be unique within each network. You can assign host

addresses according to your own needs, but they must be within the

range for the internet address class that you are using.

Gateway

192.6.12

192.6.20