diff options
Diffstat (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch3/3_2_2/content.html')
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch3/3_2_2/content.html | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch3/3_2_2/content.html b/Bachelor/CCNA4/en_CCNA4_v30/ch3/3_2_2/content.html new file mode 100644 index 0000000..6c5ee87 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch3/3_2_2/content.html @@ -0,0 +1,225 @@ +<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+
+
+
+<title>Content</title>
+<base target="_self">
+<style>
+<!--
+span.msoIns
+ {mso-style-name:"";
+ text-decoration:underline;
+ text-underline:single;
+ color:teal}
+-->
+</style>
+</head>
+
+<body background="../../images/bg.gif" topmargin="0" leftmargin="0" marginheight="0" marginwidth="0" onLoad="window.focus();" link="#808080" vlink="#808080" alink="#808080">
+
+<table border="0" cellpadding="0" cellspacing="0" width="100%">
+ <tr>
+ <td bgcolor="#336666" width="18" valign="top">
+ <img border="0" src="../../images/content_lines.gif" width="16" height="25">
+ <img border="0" src="../../images/transdot.gif" width="2" height="1"></td>
+ <td bgcolor="#336666"><b><font face="Arial" size="2" color="#FFFFFF">3.2</font></b></td>
+ <td bgcolor="#336666"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#336666" width="100%"><strong>
+ <font face="Arial" size="2" color="#FFFFFF">PPP Authentication</font></strong></td>
+ <td width="9" bgcolor="#336666"> </td>
+ </tr>
+ <tr>
+ <td bgcolor="#669999" height="25" width="18"> </td>
+ <td bgcolor="#669999" height="25"><b>
+ <font face="Arial" size="2" color="#FFFFFF">3.2.2</font></b></td>
+ <td bgcolor="#669999"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#669999" height="25" width="100%">
+ <font size="2" color="#FFFFFF"><b><span style="font-family: Arial">
+ Establishing a PPP session</span></b></font></td>
+ <td bgcolor="#669999" height="25" width="9"> </td>
+ </tr></table>
+
+<table border="0" cellpadding="0" cellspacing="0" width="95%" bordercolor="#111111">
+ <tr>
+ <td width="15"></td>
+ <td>
+
+ <font size="2" face="Arial">
+
+ PPP session establishment progresses through three
+ phases. These phases are link establishment, authentication, and the
+ network layer protocol phase.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"> LCP frames are used to accomplish the
+ work of each of the LCP phases. The following three classes of LCP
+ frames are used in a PPP session:</font><ul>
+ <li>
+
+ <font size="2" face="Arial">
+
+ Link-establishment frames are used to establish and configure a
+ link.</font></li>
+ <li>
+
+ <font size="2" face="Arial">
+
+ Link-termination frames are used to terminate a link. </font></li>
+ <li>
+
+ <font size="2" face="Arial">
+
+ Link-maintenance frames are used to manage and debug a link.</font></li>
+ </ul>
+ <p>
+
+ <font size="2" face="Arial">
+
+ The three PPP session establishment phases are:</font></p>
+ <ul>
+ <li>
+
+ <font size="2" face="Arial">
+
+ <b>Link-establishment phase</b> – In this phase each PPP device sends LCP
+ frames to configure and test the data link. LCP frames contain a
+ configuration option field that allows devices to negotiate the use of
+ options such as the maximum transmission unit (MTU), compression of
+ certain PPP fields, and the link-authentication protocol. If a
+ configuration option is not included in an LCP packet, the default
+ value for that configuration option is assumed.
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12"> Before any network
+ layer packets can be exchanged, LCP must first open the connection and
+ negotiate the configuration parameters. This phase is complete when a
+ configuration acknowledgment frame has been sent and received.</font></li>
+ <li>
+
+ <font size="2" face="Arial">
+
+ <b>Authentication phase (optional)</b> – After the link has been established
+ and the authentication protocol decided on, the peer may be
+ authenticated. Authentication, if used, takes place before the network
+ layer protocol phase is entered. As part of this phase, LCP also
+ allows for an optional link-quality determination test. The link is
+ tested to determine whether the link quality is good enough to bring
+ up network layer protocols.
+ <img border="0" src="../../images/3.gif" align="absmiddle" width="12" height="12">
+ <img border="0" src="../../images/4.gif" align="absmiddle" width="12" height="12"></font></li>
+ <li>
+
+ <font size="2" face="Arial">
+
+ <b>Network layer protocol phase</b> – In this phase the PPP devices send NCP
+ packets to choose and configure one or more network layer protocols,
+ such as IP.
+ <img border="0" src="../../images/5.gif" align="absmiddle" width="12" height="12"> Once each of the chosen network layer protocols has been
+ configured, packets from each network layer protocol can be sent over
+ the link. If LCP closes the link, it informs the network layer
+ protocols so that they can take appropriate action. The </font>
+
+ <font size="2" face="Courier New">
+
+ <b>show interfaces</b></font><font size="2" face="Arial"> command
+ reveals the LCP and NCP states under PPP configuration.</font></li>
+ </ul>
+ <p>
+
+ <font size="2" face="Arial">
+
+ The PPP link remains configured for communications until LCP or NCP
+ frames close the link or until an inactivity timer expires or a user
+ intervenes.</font></p>
+
+ <TABLE bgcolor="#B0AFAF" width="95%" border="0" cellspacing="0" cellpadding="0">
+ <TR>
+ <TD valign="top">
+ <TABLE bgcolor="#669999" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD width="5">
+ <img border="0" src="../../images/lab_toplft.gif" width="116" height="23"></TD>
+ <TD><IMG alt="" height="1" width="3" src="../../images/s.gif"></TD><TD align="right" valign="top">
+ <IMG alt="" src="../../images/corner_ur_7.gif" width="7" height="7"></TD>
+ </TR>
+ </TABLE>
+
+ <TABLE bgcolor="#B0AFAF" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD>
+ <TABLE width="100%" cellpadding="2" cellspacing="0" border="0" bordercolor="#111111">
+ <TR>
+ <TD bgcolor="#ffffff" width="15"> </TD>
+ <TD bgcolor="#ffffff"><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><font color="#808080">
+ <a href="javascript:void(0)" onClick="window.open('../../activities/ch03/activity_3_2_2.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');">
+ <img border="0" src="../../images/media_icon.gif" width="25" height="25"></a> <b>
+ <a onClick="window.open('../../activities/ch03/activity_3_2_2.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');" href="javascript:void(0)">Interactive Media Activity</a></b></font></p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#808080">
+ <p>Drag and Drop: Establishing a PPP Session</p>
+ <p>When the student has completed this activity, the student
+ will know the three steps in establishing a PPP Session.</p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><IMG alt="" height="2" width="1" src="../../images/s.gif"></p></TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+
+
+
+ <TABLE bgcolor="#669999" width="95%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD width="5">
+ <img border="0" src="../../images/lab_toplft.gif" width="116" height="23"></TD>
+ <TD>
+ <IMG alt="" height="1" width="3" src="../../images/s.gif"></TD><TD align="right" valign="top">
+ <IMG alt="" src="../../images/corner_ur_7.gif" width="7" height="7"></TD>
+ </TR>
+ </TABLE>
+
+ <TABLE bgcolor="#B0AFAF" width="95%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD>
+ <TABLE width="100%" cellpadding="2" cellspacing="0" border="0" bordercolor="#111111">
+ <TR>
+ <TD bgcolor="#ffffff" width="15"> </TD>
+ <TD bgcolor="#ffffff"><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><font color="#808080">
+
+ <a href="javascript:void(0)" onClick="window.open('../../elabs/mod03/elab_3_2_2/elab3_2_2.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');">
+ <img border="0" src="../../images/lab_icon.gif" width="25" height="25"><b></a>
+ <a href="javascript:void(0)" onClick="window.open('../../elabs/mod03/elab_3_2_2/elab3_2_2.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');">Lab Activity</a></b></font></p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#808080">
+ <p>e-Lab Activity: show interfaces</p>
+ <p>In this activity, the student will demonstrate how to use the
+ </font><font FACE="Courier New" SIZE="2" COLOR="#808080">
+ <b>show interfaces</b></font><font FACE="Arial" SIZE="2" COLOR="#808080">
+ command to display statistics for interfaces configured on the
+ router for access server.</p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p></TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+
+
+
+
+ </TD>
+ </TR>
+ </TABLE><p>
+
+ <font face="Arial" size="2"> </font></td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
\ No newline at end of file |