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94 lines
3.4 KiB
Plaintext
94 lines
3.4 KiB
Plaintext
PPPoE Support
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-------------
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Michal Ostrowski
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8 August 2001
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for ppp-2.4.2
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Updated for ppp-2.4.5 by Paul Mackerras, Sep 08
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1. Introduction
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---------------
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This document describes the support for PPP over Ethernet (PPPoE)
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included with this package. It is assumed that the reader is
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familiar with Linux PPP (as it pertains to tty/modem-based
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connections). In particular, users of PPP in the Linux 2.2 series
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kernels should ensure they are familiar with the changes to the PPP
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implementation in the 2.4 series kernels before attempting to use
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PPPoE features.
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If you are not familiar with PPP, I recommend looking at other
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packages which include end-user configuration tools, such as Roaring
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Penguin (http://www.roaringpenguin.com/pppoe).
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PPPoE is a protocol typically used by *DSL providers to manage IP
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addresses and authenticate users. Essentially, PPPoE provides for a
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PPP connection to be established not over a physical serial-line or
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modem, but over a logical connection between two unique MAC-addresses
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on an ethernet network. Once the PPPoE layer discovers the end-points
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to be used in the link and negotiates it, frames may be sent to and
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received from the PPPoE layer just as if the link was a serial line
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(or that is how it's supposed to be).
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With this in mind, the goal of the implementation of PPPoE support in
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Linux is to allow users to simply specify that the device they intend
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to use for the PPP connection is an ethernet device (e.g. "eth0") and
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the rest of the system should function as usual.
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2. Using PPPoE
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--------------
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This section is a quick guide for getting PPPoE working, to allow one
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to connect to their ISP who is providing PPPoE based services.
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1. Enable "Prompt for development and/or incomplete code/drivers" and
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"PPP over Ethernet" in your kernel configuration. Most distributions
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will include the kernel PPPoE module by default.
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2. Compile and install your kernel.
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3. Install the ppp package.
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4. Add the following line to /etc/ppp/options:
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plugin pppoe.so
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The effect of this line is simply to make "eth0", "eth1",
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....,"ethx" all valid device names for pppd (just like ttyS0,
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ttyS1).
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5. Add the necessary authentication options to your pppd
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configuration (i.e. PAP/CHAP information). If you wish to
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maintain separate configurations for different devices you may
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place configuration options in device-specific configuration
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files: /etc/ppp/options.devname (devname=ttyS0, ttyS1, eth0, eth1
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or any other valid device name).
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6. Invoke pppd with the appropriate device name: e.g. "pppd eth0"
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Do not include any compression or flow control options in your PPPoE
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configuration. They will be ignored.
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Again, here it is assumed that the reader is familiar with the general
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process of configuring PPP. The steps outlined here refer only to the
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steps and configuration options which are PPPoE specific, and it is
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assumed that the reader will also configure other aspects of the system
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(e.g. PAP authentication parameters).
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3. Advanced Functionality
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--------------------------
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For more advanced functionality (such as providing PPPoE services) and
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user configuration tools, look to the Roaring Penguin PPPoE software
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package (http://www.roaringpenguin.com/pppoe).
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4. Credits
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-----------
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The PPPoE plugin included in this package is a component of the
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Roaring Penguin PPPoE package, included in this package courtesy of
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Roaring Penguin Software. (http://www.roaringpenguin.com).
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