| <?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@redhat.com</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> |