Tcp/Ip Parameters - ZyXEL Communications Prestige 128 Plus User Manual

Prestige 128+ ISDN Router
3.2

TCP/IP Parameters

3.2.1 IP Address and Subnet Mask
Similar to the houses on a street that share a common street name, the machines
on a LAN share one common network number, also.
Where you obtain your network number depends on your particular situation. If
the ISP or your network administrator assigns you a block of registered IP
addresses, follow their instructions in selecting the IP addresses and the subnet
mask.
If the ISP did not explicitly give you an IP network number, then most likely you
have a single user account and the ISP will assign you a dynamic IP address
when the connection is established. If this is the case, it is recommended that you
select a network number from 192.168.0.0 to 192.168.255.0 (ignoring the trailing
zero) and you must enable the Single User Account feature of the Prestige. The
Internet Assigned Number Authority (IANA) reserved this block of addresses
specifically for private use; please do not use any other number 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 3 numbers specify the network
number while the last number identifies an individual workstation on that
network.
Once you have decided on the network number, pick an IP address that is easy to
remember, e.g., 192.168.1.1, for your Prestige.
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.
3-2 Internet Access