User manual

3.2. Internet Connection

The options on this page allow the administrator to specify the communications protocol with which

the WAN interface is connected to the public Internet via an Internet Service Provider (ISP).

Your ISP will provide details of their connection. The first task is to make a physical Ethernet

connection between the DFL-160's WAN interface and the ISP. This might be typically done

through some form of broadband modem and the relevant third party modem documentation should

be consulted in order to have this link operational.

The possible connection protocol options are:

A. DHCP Setup

B. Static Connection

C. PPPoE Connection

D. PPTP Connection

A. DHCP Setup

The DHCP protocol is a means for a network device, such as the DFL-160, to retrieve all required

IP addresses automatically from a DHCP server. In this case, the ISP provides the IP addresses from

its DHCP server, provided that the Ethernet connection to the ISP is functioning.

All required IP addresses will automatically be retrieved and no further configuration is normally

required for this option. The only option is the MTU value that will be used for this connection but

this normally doesn't need to be changed.

The MTU value appears as an option in all the different types of Internet connections described

below. The MTU value effects the level of packet fragmentation in connections to the ISP. A lower

MTU value increases fragmentation with a resulting increase in processing overhead to re-assemble

the packets. The default MTU value is 1500.

B. Static Connection

With this option the IP addresses required for the internet connection are entered manually.

Your ISP should provide all the information needed for this option. All fields need to be entered

except for the Secondary DNS server field.

C. PPPoE Connection

With this option, the username and password supplied by your ISP for PPPoE connection should be

entered. The Service field should be left blank unless the ISP supplies a value for it.

If the Dial-on-Demand option is enabled, the PPPoE connection will not be set up until traffic is

actually sent.

3.2. Internet Connection Chapter 3. The System Menu