ZyXEL Communications 802.11a/g Wireless CardBus Card ZyXEL AG-120, User Manual

Page: 177 / 396

Chapter 14 IP Screen
NWA-3500/NWA-3550 User’s Guide
177
14.5 Technical Reference
This section provides technical background information about the topics covered in
this chapter.
14.5.1 WAN IP Address Assignment
Every computer on the Internet must have a unique IP address. If your networks
are isolated from the Internet (only between your two branch offices, for instance)
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.
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.
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.
IP Subnet Mask Type the subnet mask.
Gateway IP Address Type the IP address of the gateway. The gateway is an immediate
neighbor of your NWA that will forward the packet to the
destination. On the LAN, the gateway must be a router on the
same segment as your NWA; over the WAN, the gateway must be
the IP address of one of the remote nodes.
Apply Click Apply to save your changes.
Reset Click Reset to begin configuring this screen afresh.
Table 52 IP Setup
LABEL DESCRIPTION
Table 53 Private IP Address Ranges
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255