Operating in the TCP/IP Environment

Fast EtherHub 3500 System User’s Guide

In TCP/IP Internet environment, gateways are used to improve performance and regulate network traffic by confining most network activity to their respective local network, and still maintain communication links among LANs of the same or different architectures. You can implement an IP subnet gateway if you have an IP network address (e.g., 140.20.0.0). For example, in a Fast EtherHub 3500 system (as shown in the figure below), you can attach three LAN adapters to your subnet gateway using a UNIX server. Perform the following steps.

Assign IP addresses from 140.20.1.1 ~ 140.20.1.254 to nodes on segment 1, and set their subnet mask to 255.255.255.0.

Assign IP addresses from 140.20.2.1 ~ 140.20.2.254 to nodes on segment 3, and set their subnet mask to 255.255.255.0.

Assign IP addresses from 140.20.3.1 ~ 140.20.3.254 to nodes on segment 2, and set their subnet mask to 255.255.255.0.

Assign IP address 140.20.1.10 to the first adapter, 140.20.2.20 to the second adapter, and 140.20.3.30 to the third one.

SEGMENT 1

EtherHub 3500 Agent

EtherHub 3500 Hub

SEGMENT 1

SEGMENT 2

SEGMENT 3

EtherHub 3500 Hub

IP = 140.20.1.10