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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/ch1/1_2_1/content.html | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch1/1_2_1/content.html')
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch1/1_2_1/content.html | 140 |
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diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_2_1/content.html b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_2_1/content.html new file mode 100644 index 0000000..abe13fe --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch1/1_2_1/content.html @@ -0,0 +1,140 @@ +<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>1.2</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">DHCP</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">1.2.1</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%"><b>
+ <font face="Arial" size="2" color="#FFFFFF">Introducing DHCP</font></b></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 face="Arial" size="2">Dynamic Host Configuration Protocol (DHCP)
+ works in a client/server mode. DHCP enables DHCP clients on an IP
+ network to obtain their configurations from a DHCP server. Less work
+ is involved in managing an IP network when DHCP is used. The
+ most significant configuration option the client receives from the
+ server is its IP address. The DHCP protocol is described in RFC 2131.</font><p>
+
+ <font face="Arial" size="2">A DHCP client is included in most modern
+ operating systems including the various Windows operating systems,
+ Novell Netware, Sun Solaris, Linux, and MAC OS. The client requests
+ addressing values from the network DHCP server.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"> This
+ server manages the allocation of the IP addresses and will answer
+ configuration requests from clients.
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12">
+ <img border="0" src="../../images/3.gif" align="absmiddle" width="12" height="12"> The DHCP
+ server can answer requests for many subnets. DHCP is not intended for
+ configuring routers, switches, and servers. These type of hosts all
+ need to have static IP addresses.</font></p>
+ <p>
+
+ <font face="Arial" size="2">DHCP works by providing a process for a
+ server to allocate IP information to clients. Clients lease the
+ information from the server for an administratively defined period.
+ When the lease expires the client must ask for another address,
+ although the client is typically reassigned the same address.</font></p>
+ <p>
+
+ <font face="Arial" size="2">Administrators typically prefer a network
+ server to offer DHCP services because these solutions are scalable and
+ relatively easy to manage. Cisco routers can use a Cisco IOS feature
+ set, Easy IP, to offer an optional, full-featured DHCP server. Easy IP leases configurations for 24 hours by default.
+ This is useful in small offices and home offices where the home user
+ can take advantage of DHCP and NAT without having an NT or UNIX
+ server. </font>
+ </p>
+ <p>
+
+ <font face="Arial" size="2">Administrators set up DHCP servers to
+ assign addresses from predefined pools. DHCP servers can also offer
+ other information, such as DNS server addresses, WINS server
+ addresses, and domain names. Most DHCP servers also allow the
+ administrator to define specifically what client MAC addresses can be
+ serviced and automatically assign them the same IP address each time.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12">
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12">
+ <img border="0" src="../../images/3.gif" align="absmiddle" width="12" height="12"></font></p>
+ <p>
+
+ <font face="Arial" size="2">DHCP uses UDP as its transport protocol.
+ The client sends messages to the server on port 67. The server sends
+ messages to the client on port 68.</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>DHCP Overview<p>
+ <a target="_blank" href="http://support.baynetworks.com/library/tpubs/html/router/soft1200/117362AA/A_29.HTM">
+ http://support.baynetworks.com/library/
+ tpubs/html/ router/soft1200/ 117362AA/A_29.HTM</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>
+
+ </td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
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