Product specifications

Efficient Networks
®
Router family
Command Line Interface Guide
Chapter 6: Connection Management
Efficient Networks
®
Page 6-41
PPPoE (PPP over Ethernet)
PPPoE is a method of delivering PPP sessions over an Ethernet LAN connected to a
DSL line, as defined in the document RFC 2516. It was designed to maintain the
established PPP interface for the end user and the service provider, while improving
service through use of a DSL line.
• PPPoE allows the user to connect to a service provider using the same PPP
interface as for a dialup connection, but the connection is through a DSL line,
which provides greater speed and bandwidth.
• The service provider also perceives the connection as a standard PPP
session, allowing for the same access control and billing per user as before.
• Multiple PPP users share the same DSL line to connect to an access
concentrator.
Our router provides additional advantages to PPPoE users and service providers, as
follows.
• Using our router, no software changes are required in the user PCs. Because
the router acts as the PPPoE client, no PPPoE software is needed in the PC.
• Our router acts as both the PPPoE client and as the bridge connecting the
Ethernet LAN to the DSL line. It does all IP address translation.
• The PPPoE client information (user name, password, and domain) are
configured into the router. Once configured, the user does not need to enter
them, ever.
• The following diagram illustrates how our router connects an Ethernet LAN to
a service provider by serving as both the bridge and the PPPoE client.
Configuring for PPPoE
Configuring the router for PPPoE requires that at least two remote router entries be
defined in the router. One remote router entry serves as a bridge for PPPoE traffic.
The other remote router entry serves as the PPPoE client.
PPPoE Bridge
PPPoE requires a remote router entry defined for bridging. All PPPoE traffic must be
bridged through the PVC or DLCI of a remote router entry. The entry can use any
protocol that supports bridging including PPP, RFC 1483, or RFC 1490.
The remote entry must be enabled for bridging using the remote enabridge command.
The PPPoE bridge does not require the Spanning Tree Protocol. Turn off the protocol
with this command:
-> remote setbroptions stp off <remotename>