ZyXEL P-2602HW Manuale Utente

 Chapter 7 WAN Setup

P-2602H(W)(L)-DxA User’s Guide

Multiplexing

Select the method of multiplexing used by your ISP from the drop-down list. 

Choices are VC or LLC.

Virtual Circuit ID

VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define a virtual 

circuit. Refer to the appendix for more information.

VPI

The valid range for the VPI is 0 to 255. Enter the VPI assigned to you.

VCI

The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local 

management of ATM traffic). Enter the VCI assigned to you.

IP Address

IP Address

This option is available if you select Routing in the Mode field.
A static IP address is a fixed IP that your ISP gives you. A dynamic IP address is 

not fixed; the ISP assigns you a different one each time you connect to the 

Internet. 
Select Obtain an IP Address Automatically if you have a dynamic IP address; 

otherwise select Static IP Address and type your ISP assigned IP address in 

the IP Address field below. 

Subnet Mask 
(ENET ENCAP 

encapsulation only)

Enter a subnet mask in dotted decimal notation. 
Refer to the appendix to calculate a subnet mask If you are implementing 

subnetting.

Gateway IP address
(ENET ENCAP 

encapsulation only)

You must specify a gateway IP address (supplied by your ISP) when you select 

ENET ENCAP in the Encapsulation field

DNS Server

First DNS Server
Second DNS Server
Third DNS Server

Select Obtained From ISP if your ISP dynamically assigns DNS server 

information (and the ZyXEL Device's WAN IP address).
Select User-Defined if you have the IP address of a DNS server. Enter the DNS 

server's IP address in the field to the right. If you chose User-Defined, but leave 

the IP address set to 0.0.0.0, User-Defined changes to None after you click 

Apply. If you set a second choice to User-Defined, and enter the same IP 

address, the second User-Defined changes to None after you click Apply. 
Select DNS Relay to have the ZyXEL Device act as a DNS proxy only when the 

ISP uses IPCP DNS server extensions.

 

The ZyXEL Device's LAN IP address 

displays in the field to the right (read-only). The ZyXEL Device tells the DHCP 

clients on the LAN that the ZyXEL Device itself is the DNS server. When a 

computer on the LAN sends a DNS query to the ZyXEL Device, the ZyXEL 

Device forwards the query to the real DNS server learned through IPCP and 

relays the response back to the computer. You can only select DNS Relay for 

one of the three servers; if you select DNS Relay for a second or third DNS 

server, that choice changes to None after you click Apply. 
Select None if you do not want to configure DNS servers. You must have 

another DNS server on your LAN, or else the computers must have their DNS 

server addresses manually configured. If you do not configure a DNS server, 

you must know the IP address of a computer in order to access it.

Connection 
(PPPoA and PPPoE 

encapsulation only)

Nailed-Up 

Connection

Select Nailed-Up Connection when you want your connection up all the time. 

The ZyXEL Device will try to bring up the connection automatically if it is 

disconnected.

Connect on 

Demand

Select Connect on Demand when you don't want the connection up all the time 

and specify an idle time-out in the Max Idle Timeout field.

Table 22   Internet Access Setup (continued)