ZyXEL P-663H-51 Guia Do Utilizador

 Chapter 5 WAN Setup

P-663H-51 User’s Guide

When you select MER in the second WAN setup add (or edit) screen, this screen displays 
next. Use this screen to configure MER connection settings.

Enable Full Cone 
NAT

In full cone NAT, all requests from the same private IP address and port are 
mapped to the same public source IP address and port. Someone on the 
Internet only needs to know the mapping scheme in order to send packets to a 
device behind the ZyXEL Device.

Dial on demand

Select Dial on demand when you don't want the connection up all the time and 
specify an idle time-out (in seconds) in the Inactivity Timeout field. 

Clear the Dial on demand option to keep the connection up all the time. The 
ZyXEL Device will try to bring up the connection automatically if it is 
disconnected. 

PPP IP extension

Only select this option if your service provider requires it. The following 
conditions apply to a connection using PPP IP extension.

•

Only one computer can be connected on the LAN. 

•

The ISP only assigns a single public IP address and the LAN computer uses 
it on its LAN interface.  

•

The firewall and NAT features are disabled. 

•

The ZyXEL Device uses DHCP to tell the LAN computer that the ZyXEL 
Device is its default gateway and DNS server. 

•

The ZyXEL Device extends the ISP’s IP subnet to the LAN computer. 

•

The ZyXEL Device bridges packets between the DSL and LAN interface, 
except for packets destined for the ZyXEL Device's LAN IP address. 

Use Static IP 
Address

If the ISP gave you a static (fixed) IP address, select this option and enter it in 
the IP Address field.  

If the ISP did not give you a static IP address, clear the Use Static IP Address 
option. The ISP automatically assigns the WAN connection an IP address when 
it connects.

Retry PPP 
password on 
authentication error

Select this to have the ZyXEL Device keep trying to connect using the password 
if there is an authentication error.

Enable PPP debug 
mode

Select this to turn on the debug mode for the PPP connection.

Bridge PPPoE 
Frames Between 
WAN and Local 
Ports (Default 
Enabled)

This feature is available when you do not select PPP IP extension. 
In addition to the ZyXEL Device's built-in PPPoE client, you can enable this to 
pass PPPoE through in order to allow LAN hosts to use PPPoE client software 
on their computers to connect to the ISP via the ZyXEL Device. Each host can 
have a separate account and a public WAN IP address. 
PPPoE pass through is an alternative to NAT for applications where NAT is not 
appropriate.
Disable PPPoE pass through if you do not need to allow hosts on the LAN to use 
PPPoE client software on their computers to connect to the ISP.

Back

Click this to return to the previous screen.

Next

Click this to go to the following screen.

Table 15   Advanced Setup > WAN > Add (3: PPPoE) (continued)