Wan Ip Address Assignment; Ip Address And Subnet Mask - ZyXEL Communications NBG-417N User Manual

The following table describes the labels in this screen
Table 15 Wizard Step 3: Your IP Address
LABEL
Get automatically from
your ISP
Use fixed IP address
provided by your ISP
Back
Next
Exit

3.4.5 WAN IP Address Assignment

Every computer on the Internet must have a unique IP address. If your networks are isolated from
the Internet, for instance, 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.
Table 16 Private IP Address Ranges
10.0.0.0
172.16.0.0
192.168.0.0
You can obtain your IP address from the IANA, from an ISP or have it assigned by a private
network. If you belong to a small organization and your Internet access is through an ISP, the ISP
can provide you with the Internet addresses for your local networks. On the other hand, if you are
part of a much larger organization, you should consult your network administrator for the
appropriate IP addresses.
Note: Regardless of your particular situation, do not create an arbitrary IP address;
always follow the guidelines above. For more information on address assignment,
please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466,
Guidelines for Management of IP Address Space.

3.4.6 IP Address and Subnet Mask

Similar to the way houses on a street share a common street name, so too do computers on a LAN
share one common network number.
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. 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
NBG-417N User's Guide
DESCRIPTION
Select this option If your ISP did not assign you a fixed IP address. This is
the default selection. If you choose this option, skip directly to
3.4.9 on page 39.
Select this option if you were given IP address and/or DNS server
settings by the ISP. The fixed IP address should be in the same subnet as
your broadband modem or router.
Click Back to return to the previous screen.
Click Next to continue.
Click Exit to close the wizard screen without saving.
- 10.255.255.255
- 172.31.255.255
- 192.168.255.255
Chapter 3 Connection Wizard
Section
37