85 lines
5.9 KiB
HTML
85 lines
5.9 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="task" />
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<meta name="DC.Title" content="Configure DHCP to send dynamic updates to DNS" />
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<meta name="abstract" content="You can configure your DHCP and DNS servers to dynamically update DNS resource records when the DHCP server leases an IP address to a client." />
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<meta name="description" content="You can configure your DHCP and DNS servers to dynamically update DNS resource records when the DHCP server leases an IP address to a client." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<title>Configure DHCP to send dynamic updates to DNS</title>
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</head>
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<body id="rzakgconfiguringdhcpdns"><a name="rzakgconfiguringdhcpdns"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Configure DHCP to send dynamic updates to DNS</h1>
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<div><p>You can configure your DHCP and DNS servers to dynamically update
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DNS resource records when the DHCP server leases an IP address to a client.</p>
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<div class="section"><p>You can configure your DHCP server to send update requests to
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the DNS server each time it assigns a new address to a host. This automated
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process reduces DNS server administration in rapidly growing or changing TCP/IP
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networks, and in networks where hosts change locations frequently. When a
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client using DHCP receives an IP address, that data is immediately sent to
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the DNS server. Using this method, DNS can continue to successfully resolve
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queries for hosts, even when their IP addresses change.</p>
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<p>For record updates
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to occur, Option 31 must be installed on this iSeries™ server. The DHCP server uses
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programming interfaces provided by Option 31 to perform dynamic updates. The
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DNS server can be running on a separate iSeries server that is capable
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of performing dynamic updates. For information about verifying that Option
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31 is installed, refer to DNS system requirements.</p>
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<p>To configure DHCP
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properties to allow the DHCP server to perform dynamic DNS updates, follow
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these steps:</p>
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</div>
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<ol><li><span>Expand <span class="menucascade"><span class="uicontrol">Network</span> > <span class="uicontrol">Servers</span> > <span class="uicontrol">TCP/IP</span></span>.</span></li>
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<li><span>In the right pane, right-click <span class="uicontrol">DHCP</span> and
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select <span class="uicontrol">Configuration</span>.</span></li>
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<li><span>In the left pane of the <span class="uicontrol">DHCP Server Configuration</span> window,
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right-click <span class="uicontrol">Global</span> and select <span class="uicontrol">Properties</span>.</span></li>
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<li><span>Select the <span class="uicontrol">Options</span> tab.</span></li>
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<li><span>Select <span class="uicontrol">option 15: Domain name</span> from the <span class="uicontrol">Selected
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options</span> list. If option 15 does not appear in the <span class="uicontrol">Selected
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options</span> list, select 15: Domain name from the <span class="uicontrol">Available
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options</span> list and click <span class="uicontrol">Add</span>.</span></li>
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<li><span>In the <span class="uicontrol">Domain Name</span> field, specify the domain
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name the client uses when resolving host names using DNS.</span></li>
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<li><span>Select the <span class="uicontrol">Dynamic DNS</span> tab.</span></li>
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<li><span>Select <span class="uicontrol">DHCP server updates both A records and PTR records</span> or
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<span class="uicontrol">DHCP server updates PTR records only</span>.</span></li>
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<li><span>Set <span class="uicontrol">Append domain name to host name</span> to <span class="uicontrol">Yes</span>.</span></li>
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<li><span>Click <span class="uicontrol">OK</span> to close the <span class="uicontrol">Global
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Properties</span> page.</span></li>
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</ol>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakgconfiguring.htm" title="This topic provides you with instructions for setting up your DHCP server and clients, and for configuring DHCP to send dynamic updates to DNS.">Configure DHCP</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzakgconceptddns.htm" title="You can use your DHCP server in conjunction with your DNS server to dynamically update the client information in the DNS when DHCP assigns the client an IP address.">Dynamic updates</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="../rzakk/rzakkinstalling.htm">DNS system requirements</a></div>
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</div>
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</div>
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</body>
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</html>
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