ZyXEL Communications P-660RU-Tx User Manual

Chapter 8 LAN Setup

P-660RU-Tx User’s Guide

Dynamic Route

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

Select the RIP version from RIP1, RIP2-B and RIP2-M.

Direction

Use this field to control how much routing information the P-660RU-Tx 
sends and receives on the subnet.

Select the RIP direction from None, Both, IN Only and OUT Only.

Multicast

Multicast packets are sent to a group of computers on the LAN and are 
an alternative to unicast packets (packets sent to one computer) and 
broadcast packets (packets sent to every computer).

IGMP is a network-layer protocol used to establish membership in a 
multicast group. The P-660RU-Tx supports IGMP v1, IGMP v2 and 
IGMP v3. Select Disabled to turn off the feature.

DHCP
DHCP

If set to Enabled, your P-660RU-Tx can assign IP addresses, an IP 
default gateway and DNS servers to operating systems that support 
the DHCP client.

If set to Disabled, the DHCP server will be disabled. 

If set to Relay, the P-660RU-Tx acts as a surrogate DHCP server and 
relays DHCP requests and responses between the remote server and 
the clients. 

DHCP Server
Starting IP 
Address

This field specifies the first of the contiguous addresses in the IP 
address pool.

Current Pool 

Summary

Click this to display a summary table for the IP address pool. See 

 for more details.

The P-660RU-Tx is pre-configured with a pool of IP addresses for the 
DHCP clients (DHCP Pool). See the product specifications in the 
appendices. Do not assign static IP addresses from the DHCP pool to 
your LAN computers.

IP Pool Count

This field specifies the size, or count of the IP address pool.

Lease Time

This is the period of time DHCP-assigned addresses is used. 

DHCP automatically assigns IP addresses to clients when they log in. 
DHCP centralizes IP address management on central computers that 
run the DHCP server program. DHCP leases addresses, for a period of 
time, which means that past addresses are “recycled” and made 
available for future reassignment to other systems.

DNS
DNS Relay

Select Auto Discovered DNS Server Only if your ISP dynamically 
assigns DNS server information (and the P-660RU-Tx's WAN IP 
address).

Select User Discovered DNS Server Only if you have the IP address 
of a DNS server. You have to specify the primary and secondary DNS 
servers in the following fields.

Table 17   Interface Setup > LAN