Reference Guide for the Model RM356 Modem Router

3-10 Router Configuration

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 page1-6 and “IP Configuration by DHCP” on page 1-14 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.

Table3-6. 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 Startin
g
Address This field is the be
g
innin
g
of the ran
g
e of addresses to assi
g
n.
Size of Client IP Pool This field is the number of sequential addresses available for
assi
g
nment to attached hosts. The maximum is 32.
Primary DNS Server If you want the router to provide the Primary DNS Server address to
attached hosts, enter the address in this field.
Secondary DNS Server If you want the router to provide the Secondary DNS Serve r address
toattached 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 automat ically calcul ates t hi s mask
for the class of the IP address that you assi
g
n. Unless you have a
special need for subnettin
g
, use the default subnet mask calculated by
the router. All hosts on the LAN se
g
ment should use the same mask.