ZyXEL Communications P-870HW-I User Manual

P-870HW-I1 User’s Guide

Chapter 24 LAN Setup

261

First DNS Server
Second DNS Server
Third DNS Server

Press [SPACE BAR] to select From ISP, User Defined or None and press 

[ENTER]. These fields are not available on all models.
Select From ISP if your ISP dynamically assigns DNS server information. (In 

this case, the ISP assigns the WAN IP address too. See Menu 4.) The field to 

the right is read-only, and it displays the IP address provided by your ISP.
Select User-Defined if you have the IP address of a DNS server. You might get 

it from your ISP or from your network. Enter the IP address in the field below.
Select None if you do not want to use this DNS server. If you select None for 

all of the DNS servers, you must use IP addresses to configure the ZyXEL 

Device and to access the Internet.
Select DNS Relay if you want to use the ZyXEL Device’s IP address. In this 

case, the ZyXEL Device finds out the IP address of the DNS server (based on 

RFC 1877). Then, it forwards DNS queries from DHCP clients to this server 

and sends the response back to the DHCP clients.

IP Address

If you select User-Defined in the field above, enter the IP address of the DNS 

server in this field.

DHCP Server 

Address

This field is available if you select Relay in the DHCP field. Enter the IP 

address of the DHCP server for the network.

TCP/IP Setup

IP Address

Enter the IP address of your ZyXEL Device in dotted decimal notation; for 

example, 192.168.1.1 (factory default). 

IP Subnet Mask

Type the subnet mask assigned to you by your ISP or network administrator. If 

they did not provide one, use the default value.

RIP Direction

Use this field to control how much routing information the ZyXEL Device sends 

and receives on the subnet.
None - The ZyXEL Device does not send or receive routing information on the 

subnet.
Both - The ZyXEL Device sends and receives routing information on the 

subnet.
In Only - The ZyXEL Device only receives routing information on the subnet.
Out Only - The ZyXEL Device only sends routing information on the subnet.

Version

Select which version of RIP the ZyXEL Device uses when it sends or receives 

information on the subnet.
RIP-1 - The ZyXEL Device uses RIPv1 to exchange routing information.
RIP-2B - The ZyXEL Device broadcasts RIPv2 to exchange routing 

information.
RIP-2M - The ZyXEL Device multicasts RIPv2 to exchange routing information.

Multicast

You do not have to enable multicasting to use RIP-2M. (See RIP Version.)
Select which version of IGMP the ZyXEL Device uses to support multicasting 

on the LAN. Multicasting sends packets to some computers on the LAN and is 

an alternative to unicasting (sending packets to one computer) and 

broadcasting (sending packets to every computer).
None - The ZyXEL Device does not support multicasting.
IGMP-v1 - The ZyXEL Device supports IGMP version 1.
IGMP-v2 - The ZyXEL Device supports IGMP version 2.
Multicasting can improve overall network performance. However, it requires 

extra processing and generates more network traffic. In addition, other 

computers on the LAN have to support the same version of IGMP.

Edit IP Alias

If you want to partition your LAN interface into subnets, press [SPACE BAR] to 

select Yes and press [ENTER]. Menu 3.2.1 appears.

Table 118   Menu 3.2: TCP/IP and DHCP Ethernet Setup (continued)