US Robotics ADSL Ethernet Modem Overview page 12

Configuring DHCP/DNS Service
Dynamic Host Configuration Protocol (DHCP) is the protocol that
is used to automatically assign an IP address to a client
computer. Domain Name Server (DNS) is the Internet protocol
for mapping host names, domain names, and aliases to IP
addresses.
Setting DHCP Service
When enabling NAPT or using the modem in PPPoA mode, the
DHCP server should be enabled. To enable the DHCP server,
click the Enable button. When the DHCP server is enabled, IP
addresses will automatically be assigned. This can be seen by
selecting System allocates address pool. When you have
completed the setup, click OK to save the configuration.
If you need to assign the range for the beginning and end IP
addresses, select Assign address pool range. You will then
need to enter the Beginning IP address, the End IP address, and
the Max Lease Time. The Max Lease Time must be entered in
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increments of seconds. When you have completed the setup,
click OK to save the configuration.
Setting DNS Service
Most service providers will automatically assign the DNS Server
IP address by using Auto Discovery. Once DNS Relay is
enabled, Auto Discovery will be enabled by default. If your
service provider requires a static DNS entry to be set, Disable
must be selected for DNS Relay. You must then enter the DNS
Server IP address in the Manual Setting field. When you have
completed the setup, click OK to save the configuration.
Create a Routing Table
Each routing table entry comes with the following parameters:
Parameters Description
Checked to enable RIP (Router Information
RIP on/off
Protocol) function
Dest.
The network ID of the destination IP address
Network ID
Dest. Subnet
The subnet mask of the destination IP address
mask
Mask The subnet mask of the destination subnet
The IP address of the neighbor/peer interface for
Next Hop IP
routing purpose
There are two ways to create a routing table. One is to enable RIP and
the system will create a routing table dynamically through the routing
information. The other is to disable RIP option and create a static routing
table manually. Once RIP is enabled, the routing table entries will
disappear. While the RIP is disabled, the user must create a routing table
for a specific routing path. RIP is enabled/disabled by selecting/de-
selecting RIP on/off.
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