ZyXEL Communications 2 Plus User Manual

Chapter 8 WAN Screens

ZyWALL 2 Plus User’s Guide

Relogin 

Every(min)    

(Telia Login only)

The Telia server logs the ZyWALL out if the ZyWALL does not log in periodically. 

Type the number of minutes from 1 to 59 (30 default) for the ZyWALL to wait 

between logins.

WAN IP Address 

Assignment 

Get automatically 

from ISP 

Select this option If your ISP did not assign you a fixed IP address. This is the 

default selection. 

Use Fixed IP 

Address

Select this option If the ISP assigned a fixed IP address. 

My WAN IP 

Address

Enter your WAN IP address in this field if you selected Use Fixed IP Address. 

My WAN IP 

Subnet Mask

Enter the IP subnet mask (if your ISP gave you one) in this field if you selected Use 

Fixed IP Address. 

Gateway IP 

Address 

Enter the gateway IP address (if your ISP gave you one) in this field if you selected 

Use Fixed IP Address. 

Advanced Setup

Enable NAT 

(Network 

Address 

Translation)

Network Address Translation (NAT) allows the translation of an Internet protocol 

address used within one network (for example a private IP address used in a local 

network) to a different IP address known within another network (for example a 

public IP address used on the Internet). 
Select this check box to enable NAT.

RIP Direction

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. 
Choose Both, None, In Only or Out Only.
When set to Both or Out Only, the ZyWALL will broadcast its routing table 

periodically. 
When set to Both or In Only, the ZyWALL will incorporate RIP information that it 

receives.
When set to None, the ZyWALL will not send any RIP packets and will ignore any 

RIP packets received. 
By default, RIP Direction is set to Both.

RIP Version

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

packets that the ZyWALL sends (it recognizes both formats when receiving). 

Choose RIP-1, RIP-2B or RIP-2M.

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. Multicasting can reduce the load on non-router machines since they 

generally do not listen to the RIP multicast address and so will not receive the RIP 

packets. However, if one router uses multicasting, then all routers on your network 

must use multicasting, also. By default, the RIP Version field is set to RIP-1.

Enable Multicast

Select this check box to turn on IGMP (Internet Group Multicast Protocol). IGMP is 

a network-layer protocol used to establish membership in a Multicast group - it is 

not used to carry user data.

Table 32   NETWORK > WAN > WAN (Ethernet Encapsulation) (continued)