ZyXEL Communications max208m User Manual

WiMAX Device Configuration User’s Guide

This chapter shows you how to configure the WiMAX Device’s network setting.

The following terms and concepts may help as you read through this chapter.

IP addresses identify individual devices on a network. Every networking device (including 
computers, servers, routers, printers, etc.) needs an IP address to communicate across the 
network. These networking devices are also known as hosts.

Subnet masks determine the maximum number of possible hosts on a network. You can also use 
subnet masks to divide one network into multiple sub-networks.

A DHCP (Dynamic Host Configuration Protocol) server can assign your WiMAX Device an IP address, 
subnet mask, DNS and other routing information when it’s turned on.

DNS (Domain Name System) is for mapping a domain name to its corresponding IP address and 
vice versa. The DNS server is extremely important because without it, you must know the IP 
address of a machine before you can access it. The DNS server addresses that you enter in the 
DHCP setup are passed to the client machines along with the assigned IP address and subnet mask.

There are two ways that an ISP disseminates the DNS server addresses. The first is for an ISP to 
tell a customer the DNS server addresses, usually in the form of an information sheet, when s/he 
signs up. If your ISP gives you the DNS server addresses, enter them in the DNS Server fields; 
otherwise, leave them blank.

Some ISPs choose to pass the DNS servers using the DNS server extensions of PPP IPCP (IP Control 
Protocol) after the connection is up. If your ISP did not give you explicit DNS servers, chances are 
the DNS servers are conveyed through IPCP negotiation. The WiMAX Device supports the IPCP DNS 
server extensions through the DNS proxy feature.