Leaked source code of windows server 2003
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><HTML DIR="LTR"><HEAD><META HTTP-EQUIV="Content-Type" Content="text/html; charset=Windows-1252"><TITLE>ATM Component Description</TITLE><style type="text/css">@import url(td.css);</style></HEAD><BODY TOPMARGIN="0"><H1><A NAME="atm_component_description"></A><SUP></SUP>ATM Component Description</H1>
<P>The asynchronous transfer mode (ATM) component contains networking support using ATM devices. There are four ATM communication modes:
<UL type="disc"> <LI>Using local area network (LAN) emulation, known as ATMLANE. This is the mode typically used in corporate LANs.</li>
<LI>Using Ethernet-permanent virtual circuit (PVC), known as ATMEPVC. This is used in certain ATM-DSL deployments.</li>
<LI>Using Classical Internet Protocols (IP) over ATM, known as ATMARPC and ATMARPS. This is an alternative LAN technique suitable for IP-only networks.</li>
<LI>Using Winsock over raw ATM connections. This is used for special purpose applications .</li></UL>
<H1>Component Configuration</H1>
<P>ATMLANE, ATMARPC, ATMARPS and Winsock do not require configuration when used over ATM.</P>
<P>The following table shows the settings for Ethernet-PVC configurations.</P>
<P class="fineprint"></P>
<TABLE>
<TR VALIGN="top"><TH width=23%>Property/setting name</TH><TH width=13%>Default setting</TH><TH width=34%>Description</TH><TH width=15%>Property example </TH><TH width=15%>Setting example </TH></TR>
<TR VALIGN="top"><TD width=23%>VPI</TD><TD width=13%>0</TD><TD width=34%>The virtual path identifier for the PVC on which the driver operates.</TD><TD width=15%>VPI</TD><TD width=15%>1</TD></TR>
<TR VALIGN="top"><TD width=23%>VCI</TD><TD width=13%>0</TD><TD width=34%>The virtual circuit identifier for the PVC.</TD><TD width=15%>VCI</TD><TD width=15%>100</TD></TR>
<TR VALIGN="top"><TD width=23%>Encap</TD><TD width=13%>2</TD><TD width=34%>Defines the encapsulation used for data transfer. Possible values are:<P>0 – IPv4</P>
<P>1 – IPv4 LLC/SNAP</P>
<P>2 – Ethernet</P>
<P>3 – Ethernet LLC/SNAP</P></TD><TD width=15%>Encap</TD><TD width=15%>1</TD></TR></TABLE><BR>
<P class="fineprint"></P>
<H1>Special Notes</H1>
<P>ATM networks commonly use only one of the four possible operation modes listed above.</P>
<H1>Links for Further Information</H1>
<P>For more information on ATM technology, see this <A HREF="http://www.microsoft.com/hwdev">Microsoft Web site</A>.</P>
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