82 lines
5.8 KiB
HTML
82 lines
5.8 KiB
HTML
|
<?xml version="1.0" encoding="UTF-8"?>
|
||
|
|
<!DOCTYPE html
|
||
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
||
|
|
<html lang="en-us" xml:lang="en-us">
|
||
|
|
<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
||
|
|
<meta name="security" content="public" />
|
||
|
|
<meta name="Robots" content="index,follow" />
|
||
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
||
|
|
<meta name="DC.Type" content="concept" />
|
||
|
|
<meta name="DC.Title" content="Connection alternatives" />
|
||
|
|
<meta name="abstract" content="PPP can transmit datagrams over serial point-to-point links." />
|
||
|
|
<meta name="description" content="PPP can transmit datagrams over serial point-to-point links." />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiyplan.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiyanalog.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiydigital.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiysw56.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiyisdn4.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiytone.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiyframerelay.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiyl2tpsupport.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="rzaiypppoedsl.htm" />
|
||
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
|
||
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
|
||
|
|
<meta name="DC.Format" content="XHTML" />
|
||
|
|
<meta name="DC.Identifier" content="rzaiyconnalts" />
|
||
|
|
<meta name="DC.Language" content="en-us" />
|
||
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
||
|
|
<!-- US Government Users Restricted Rights -->
|
||
|
|
<!-- Use, duplication or disclosure restricted by -->
|
||
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
||
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
||
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
||
|
|
<title>Connection alternatives </title>
|
||
|
|
</head>
|
||
|
|
<body id="rzaiyconnalts"><a name="rzaiyconnalts"><!-- --></a>
|
||
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
||
|
|
<h1 class="topictitle1">Connection alternatives </h1>
|
||
|
|
<div><p>PPP can transmit datagrams over serial point-to-point links.</p>
|
||
|
|
<p>PPP enables interconnection of multiple vendor equipment and multiple protocols
|
||
|
|
by standardizing point-to-point communications. The PPP data link layer uses
|
||
|
|
High-level Data Link Control (HDLC)-like framing for encapsulating datagrams
|
||
|
|
over both asynchronous and synchronous point-to-point telecommunication links.</p>
|
||
|
|
<p>While PPP supports a wide range of link types, Serial-Line Internet Protocol
|
||
|
|
(SLIP) only supports asynchronous link types. SLIP is generally
|
||
|
|
employed only for analog links. Local telephone companies offer traditional
|
||
|
|
telecommunications services in an ascending scale of capabilities and cost.
|
||
|
|
These services use existing telephone company voice network facilities between
|
||
|
|
customer and the central office.</p>
|
||
|
|
<p>PPP links establish a physical connection between a local and remote host.
|
||
|
|
Connected links provide dedicated bandwidth. They also come in a variety of
|
||
|
|
data rates and protocols. With PPP links, you can choose from the following
|
||
|
|
connection alternatives: </p>
|
||
|
|
</div>
|
||
|
|
<div>
|
||
|
|
<ul class="ullinks">
|
||
|
|
<li class="ulchildlink"><strong><a href="rzaiyanalog.htm">Analog telephone lines</a></strong><br />
|
||
|
|
The analog connection, which uses modems to carry data over leased or switched lines, sits at the bottom of the point-to-point scale.</li>
|
||
|
|
<li class="ulchildlink"><strong><a href="rzaiydigital.htm">Digital services and DDS</a></strong><br />
|
||
|
|
You can use digital service and Digital Data Services (DDS) with PPP.</li>
|
||
|
|
<li class="ulchildlink"><strong><a href="rzaiysw56.htm">Switched-56</a></strong><br />
|
||
|
|
When you do not need a full-time connection, you can save money
|
||
|
|
by using switched digital service, which is generally called <dfn class="term">Switch-56
|
||
|
|
(SW56)</dfn>.</li>
|
||
|
|
<li class="ulchildlink"><strong><a href="rzaiyisdn4.htm">Integrated Services Digital Network</a></strong><br />
|
||
|
|
Integrated Services Digital Network (ISDN) provides switched end-to-end digital connectivity. Unlike other services, however, ISDN can carry both voice and data over the same connection.</li>
|
||
|
|
<li class="ulchildlink"><strong><a href="rzaiytone.htm">T1/E1 and fractional T1</a></strong><br />
|
||
|
|
T1/E1 and fractional T1 are two kinds of valid connection alternatives.</li>
|
||
|
|
<li class="ulchildlink"><strong><a href="rzaiyframerelay.htm">Frame relay</a></strong><br />
|
||
|
|
Frame relay is a protocol for routing frames through the network based on the IP address field (data link connection identifier) in the frame and for managing the route or virtual connection.</li>
|
||
|
|
<li class="ulchildlink"><strong><a href="rzaiyl2tpsupport.htm">L2TP (tunneling) support for PPP connections</a></strong><br />
|
||
|
|
Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol that extends PPP to support a link layer tunnel between a requesting L2TP client (L2TP Access Concentrator or LAC) and a target L2TP server endpoint (L2TP Network Server or LNS).</li>
|
||
|
|
<li class="ulchildlink"><strong><a href="rzaiypppoedsl.htm">PPPoE (DSL) support for PPP connections</a></strong><br />
|
||
|
|
Digital subscriber line (DSL) refers to a class of technology used to obtain more bandwidth over existing copper telephone cabling running between a customer's premises and an ISP provider.</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
<div class="familylinks">
|
||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaiyplan.htm" title="You can read this topic for information about creating and administering PPP connections.">Plan PPP</a></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|