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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
<book id="WANGuide">
<bookinfo>
<title>Synchronous PPP and Cisco HDLC Programming Guide</title>
<authorgroup>
<author>
<firstname>Alan</firstname>
<surname>Cox</surname>
<affiliation>
<address>
<email>alan@lxorguk.ukuu.org.uk</email>
</address>
</affiliation>
</author>
</authorgroup>
<copyright>
<year>2000</year>
<holder>Alan Cox</holder>
</copyright>
<legalnotice>
<para>
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later
version.
</para>
<para>
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
</para>
<para>
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
</para>
<para>
For more details see the file COPYING in the source
distribution of Linux.
</para>
</legalnotice>
</bookinfo>
<toc></toc>
<chapter id="intro">
<title>Introduction</title>
<para>
The syncppp drivers in Linux provide a fairly complete
implementation of Cisco HDLC and a minimal implementation of
PPP. The longer term goal is to switch the PPP layer to the
generic PPP interface that is new in Linux 2.3.x. The API should
remain unchanged when this is done, but support will then be
available for IPX, compression and other PPP features
</para>
</chapter>
<chapter id="bugs">
<title>Known Bugs And Assumptions</title>
<para>
<variablelist>
<varlistentry><term>PPP is minimal</term>
<listitem>
<para>
The current PPP implementation is very basic, although sufficient
for most wan usages.
</para>
</listitem></varlistentry>
<varlistentry><term>Cisco HDLC Quirks</term>
<listitem>
<para>
Currently we do not end all packets with the correct Cisco multicast
or unicast flags. Nothing appears to mind too much but this should
be corrected.
</para>
</listitem></varlistentry>
</variablelist>
</para>
</chapter>
<chapter id="pubfunctions">
<title>Public Functions Provided</title>
!Edrivers/net/wan/syncppp.c
</chapter>
</book>
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