ZyXEL Communications NWA-3500 ユーザーズマニュアル

 Chapter 14 IP Screen

NWA-3500/NWA-3550 User’s Guide

This section provides technical background information about the topics covered in 
this chapter.

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

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