Reference Guide for the Model RT328 and Model RH348 ISDN Routers

DHCP and TCP/IP Setup

The router has the capability to act as a DHCP server, allowing it to assign IP, DNS, and Default Gateway addresses to attached PCs or workstations. The assigned Default Gateway address is the LAN address of the router, as set in the TCP/IP section. Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.

If you are setting up your network for the first time, read about IP addresses starting with“IP Addresses and the Internet” on page 1-7 and “IP Configuration by DHCP” on page 1-15 for an explanation of DHCP and information about how to assign IP addresses for your network.

Table 3-6 lists and describes the fields to use for setting up TCP/IP parameters. When you finish entering information in all of the fields, press [Enter] at the prompt Press ENTER to Confirm. Your selections are saved. Press [Esc] at any time to cancel the entries you have made.

Table 3-6.

Menu 3 - Ethernet Setup Menu Fields

 

 

 

 

Field

 

Description

 

 

 

 

 

DHCP Setup:

 

 

 

DHCP

 

If set to Server, the router acts as a DHCP server.

 

Client IP Pool Starting

This field is the beginning of the range of addresses to assign.

 

Address

 

 

 

Size of Client IP Pool

This field is the number of sequential addresses available for

 

 

 

assignment to attached hosts. The maximum is 32.

 

Primary DNS Server

If you want the router to assign the Primary DNS Server address to

 

 

 

attached hosts, enter the address in this field.

 

Secondary DNS Server

If you want the router to assign the Secondary DNS Server address

 

 

 

to attached hosts, enter the address in this field.

 

 

 

 

 

TCP/IP Setup:

 

 

 

IP Address

 

Enter the IP address of the LAN interface of the router in dotted-decimal

 

 

 

notation (four 8-bit numbers, between 0 and 255, separated by periods,

 

 

 

for example, 192.168.135.5). Every device on the TCP/IP network must

 

 

 

have a unique IP address.

 

IP Subnet Mask

An IP address consists of two parts, the network ID and the host ID. The

 

 

 

IP Subnet Mask specifies the network ID portion of the address, written

 

 

 

in dotted-decimal notation. The router automatically calculates this mask

 

 

 

for the class of the IP address that you assign. Unless you have a

 

 

 

special need for subnetting, use the default subnet mask calculated by

 

 

 

the router. All hosts on the LAN segment should use the same mask.

 

 

 

 

 

 

 

 

 

3-12

 

Router Configuration