Pppoe - D-Link NetDefend DFL-210 User Manual

3.3.4. PPPoE

1. Go to Interfaces > VLAN > Add > VLAN
2. Enter a suitable name for the VLAN, in this case VLAN10
3. Now enter:
• Interface: lan
• VLAN ID: 10
4. Click OK
VLAN advanced settings
There is a single advanced setting for VLAN:
Unknown VLAN Tags
What to do with VLAN packets tagged with an unknown ID.
Default: DropLog
3.3.4. PPPoE
3.3.4.1. Overview
Point-to-Point Protocol over Ethernet (PPPoE) is a tunneling protocol used for connecting multiple
users on an Ethernet network to the Internet through a common serial interface, such as a single
DSL line, wireless device or cable modem. All the users on the Ethernet share a common
connection, while access control can be done on a per-user basis.
Internet server providers (ISPs) often require customers to connect through PPPoE to their
broadband service. Using PPPoE the ISP can:
• Implement security and access-control using username/password authentication
• Trace IP addresses to a specific user
• Allocate IP address automatically for PC users (similar to DHCP). IP address provisioning can
be per user group
The PPP Protocol
Point-to-Point Protocol (PPP), is a protocol for communication between two computers using a
serial interface, such as the case of a personal computer connected through a switched telephone line
to an ISP. In terms of the OSI model, PPP provides a layer 2 encapsulation mechanism to allow
packets of any protocol to travel through IP networks. PPP uses Link Control Protocol (LCP) for
link establishment, configuration and testing. Once the LCP is initialized, one or several Network
Control Protocols (NCPs) can be used to transport traffic for a particular protocol suite, so that
multiple protocols can interoperate on the same link, for example, both IP and IPX traffic can share
a PPP link.
PPP Authentication
PPP authentication is optional with PPP. Authentication protocols supported are Password
Authentication Protocol (PAP), Challenge Handshake Authentication Protocol (CHAP) and
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Chapter 3. Fundamentals