ZyXEL Communications 623ME-T User Manual

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Prestige 623ME-T User’s Guide 
3-4 
Wizard Setup 
unless you are told otherwise. Let's say you select 192.168.1.0 as the network number; which covers 254 
individual addresses, from 192.168.1.1 to 192.168.1.254 (zero and 255 are reserved). In other words, the first 
three numbers specify the network number while the last number identifies an individual computer on that 
network. 
Once you have decided on the network number, pick an IP address that is easy to remember, for instance, 
192.168.1.1, for your Prestige, but make sure that no other device on your network is using that IP address. 
The subnet mask specifies the network number portion of an IP address. Your Prestige will compute the 
subnet mask automatically based on the IP address that you entered. You don't need to change the subnet 
mask computed by the Prestige unless you are instructed to do otherwise. 
3.7  IP Address Assignment 
A static IP is a fixed IP that your ISP gives you. A dynamic IP is not fixed; the ISP assigns you a different 
one each time. The Single User Account feature can be enabled or disabled if you have either a dynamic or 
static IP. However the encapsulation method assigned influences your choices for IP address and ENET 
ENCAP Gateway. 
3.7.1  IP Assignment with PPPoE Encapsulation 
If you have a dynamic IP, then the IP address and ENET ENCAP Gateway fields are not applicable (N/A). If 
you have a static IP, then you only need to fill in the IP Address field and not the ENET ENCAP Gateway 
field. 
3.7.2 IP Assignment with RFC 1483 Encapsulation 
In this case the IP Address Assignment must be static with the same requirements for the IP Address and 
ENET ENCAP Gateway fields as stated above. 
3.7.3 Private IP Addresses 
Every machine on the Internet must have a unique address. If your networks are isolated from the Internet, 
for example, only between your two branch offices, you can assign any IP addresses to the hosts without 
problems. However, the Internet Assigned Numbers Authority (IANA) has reserved the following three 
blocks of IP addresses specifically for private networks: 
10.0.0.0     —  10.255.255.255 
172.16.0.0   —  172.31.255.255 
192.168.0.0  —  192.168.255.255