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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/CCNA4/en_CCNA4_v30/ch5/5_2_4/content.html | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch5/5_2_4/content.html')
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch5/5_2_4/content.html | 139 |
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diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch5/5_2_4/content.html b/Bachelor/CCNA4/en_CCNA4_v30/ch5/5_2_4/content.html new file mode 100644 index 0000000..c53f0ab --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch5/5_2_4/content.html @@ -0,0 +1,139 @@ +<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">
+</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"><font face="Arial" size="2" color="#FFFFFF"><b>5.</b></font><b><font face="Arial" size="2" color="#FFFFFF">2</font></b></td>
+ <td bgcolor="#336666"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#336666" width="100%"><b>
+ <font face="Arial" size="2" color="#FFFFFF">Configuring Frame Relay</font></b></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">5.2.4</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%"><strong>
+ <font face="Arial" size="2" color="#FFFFFF">Frame Relay subinterfaces</font></strong></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>
+
+ <p><font size="2" face="Arial">
+
+ To enable the forwarding of broadcast routing updates in a hub-and-spoke
+ Frame Relay topology, configure the hub router with logically assigned
+ interfaces. These interfaces are called subinterfaces. Subinterfaces are logical subdivisions of
+ a physical interface.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"></font><p><font size="2" face="Arial">
+
+ In split-horizon routing environments, routing updates received on one
+ subinterface can be sent out another subinterface. In a subinterface
+ configuration, each virtual circuit can be configured as a point-to-point
+ connection. This allows each subinterface to act similarly to a leased
+ line. Using a Frame Relay point-to-point subinterface, each pair of the
+ point-to-point routers is on its own subnet.</font><p><font size="2" face="Arial">
+
+ Frame Relay subinterfaces can be configured in either point-to-point or
+ multipoint mode:</font><ul>
+ <li><font size="2" face="Arial">
+
+ <b>Point-to-point</b> – A single point-to-point subinterface is used to establish
+ one PVC connection to another physical interface or subinterface on a remote
+ router. In this case, each pair of the point-to-point routers is on its own
+ subnet and each point-to-point subinterface would have a single DLCI. In a
+ point-to-point environment, each subinterface is acting like a
+ point-to-point interface. Therefore, routing update traffic is not subject
+ to the split-horizon rule.</font></li>
+ <li><font size="2" face="Arial">
+
+ <b>Multipoint</b> – A single multipoint subinterface is used to establish multiple
+ PVC connections to multiple physical interfaces or subinterfaces on remote
+ routers. All the participating interfaces would be in the same subnet. The
+ subinterface acts like an NBMA Frame Relay interface so routing update
+ traffic is subject to the split-horizon rule.</font></li>
+ </ul>
+
+ <p><font size="2" face="Arial">
+
+ The </font><b><font size="2" face="Courier New">
+
+ encapsulation frame-relay</font></b><font size="2" face="Arial">
+
+ command is assigned to the physical interface.
+ All other configuration items, such as the network layer address and DLCIs,
+ are assigned to the subinterface.</font></p>
+ <p><font face="Arial" size="2">
+ Multipoint configurations can be used to conserve addresses that can be
+ especially helpful if Variable Length Subnet Masking (VLSM) is not being
+ used. However, multipoint configurations may not work properly given the
+ broadcast traffic and split-horizon considerations. The
+ point-to-point subinterface option was created to avoid these issues.</font></p>
+ <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">
+ <img border="0" src="../../images/links_icon.gif" width="25" height="25">
+ <b>Web Links</b></font></p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#808080">
+
+ <p>Configuring Frame Relay Subinterfaces<p>
+ <a target="_blank" href="http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a008009421e.shtml">
+ http://www.cisco.com/en/US/tech/</a><br>
+ <a target="_blank" href="http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a008009421e.shtml">
+ tk713/tk237/technologies_configuration_</a><br>
+ <a target="_blank" href="http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a008009421e.shtml">
+ example09186a008009421e.shtml</a></font></p>
+
+ <p>
+ <IMG alt="" height="2" width="1" src="../../images/s.gif"></p>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE><p>
+
+ <font face="Arial" size="2"> </font></td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
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