ZyXEL Communications Corporation AMG1302 Manuel D’Utilisation

 Chapter 7 LAN Setup

AMG1302-T10A User’s Guide

Once you have decided on the network number, pick an IP address that is easy to remember, for 

instance, 192.168.1.1, for your Device, but make sure that no other device on your network is 

using that IP address.

The subnet mask specifies the network number portion of an IP address. Your Device 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 Device unless you are instructed to do otherwise.

Every machine on the Internet must have a unique address. If your networks are isolated from the 

Internet, for example, 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:

• 10.0.0.0     — 10.255.255.255
• 172.16.0.0   — 172.31.255.255
• 192.168.0.0 — 192.168.255.255

You can obtain your IP address from the IANA, from an ISP or it can be assigned from 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”.

RIP (Routing Information Protocol) allows a router to exchange routing information with other 

routers. The RIP Direction field controls the sending and receiving of RIP packets. When set to:

• Both - the Device will broadcast its routing table periodically and incorporate the RIP information 

that it receives.

• In Only - the Device will not send any RIP packets but will accept all RIP packets received.
• Out Only - the Device will send out RIP packets but will not accept any RIP packets received.
• None - the Device will not send any RIP packets and will ignore any RIP packets received.

The Version field controls the format and the broadcasting method of the RIP packets that the 

Device sends (it recognizes both formats when receiving). RIP-1 is universally supported; but RIP-

2 carries more information. RIP-1 is probably adequate for most networks, unless you have an 

unusual network topology.

Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B 

uses subnet broadcasting while RIP-2M uses multicasting.