Wan Ip Address Assignment - ZyXEL Communications P-320W v3 User Manual

Chapter 3 Connection Wizard
The following table describes the labels in this screen
Table 17 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 18 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
48
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 section
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
Section 3.4.9 on page 51.
P-320W v3 User's Guide