Alpha Microsystems Eagle 100 Installation Guide download pdf (Page 35)

AlphaNET Installation Guide, Revision 05

Chapter 5 - Installing Network

Gateways

Gateways allow you to gain access to networks your computer is not physically connected to. This is

done by routing all traffic for that network to a network node which does have a physical connection.

This extra routing is transparent to both you and the software in use. You must, however, pre-define all

networks to which you wish to connect, and establish routing paths for each.

DEFINING GATEWAYS

You define a gateway much as you would any other network, using the NETINI program, except instead

of defining a physical connection by specifying a network driver, you specify a logical connection by

specifying the network node to forward messages to. (Instead of specifying a .NIN file to the NETINI

program, to set up a gateway, you specify a .GIN gateway file.)

The elements required to connect different networks through a common gateway are illustrated on the

next two pages. In the figure below, four networks are shown. Networks #1, #2, and #3 are serial

networks. A serial network is a point-to-point type network. This means each point to point connection

makes up a unique network. In the illustration you can see Network #1 connects Computer A to

Computer E; Network #2 connects Computer B to Computer E; Network #3 connects Computer C to

Computer E.

Network# 4 is an Ethernet network that allows a large number of computers to share a common network.

Computer D, Computer E, and Computer F are able to communicate with each other, because they are all

part of a common network (Network #4).

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 41 42

No comments

Alpha Microsystems Eagle 100 Installation Guide Page 35