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dd796c4d62cfd6ad04198537ceaeba385ed3ef4eMark Andrews<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
dd796c4d62cfd6ad04198537ceaeba385ed3ef4eMark Andrews<title>Chapter�8.�Troubleshooting</title>
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a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson<div class="chapter" lang="en">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<div class="titlepage"><div><div><h2 class="title">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<a name="Bv9ARM.ch08"></a>Chapter�8.�Troubleshooting</h2></div></div></div>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<div class="toc">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<p><b>Table of Contents</b></p>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<dl>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2593111">Common Problems</a></span></dt>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<dd><dl><dt><span class="sect2"><a href="Bv9ARM.ch08.html#id2593116">It's not working; how can I figure out what's wrong?</a></span></dt></dl></dd>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2593128">Incrementing and Changing the Serial Number</a></span></dt>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2593145">Where Can I Get Help?</a></span></dt>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson</dl>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson</div>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<div class="sect1" lang="en">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<div class="titlepage"><div><div><h2 class="title" style="clear: both">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<a name="id2593111"></a>Common Problems</h2></div></div></div>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<div class="sect2" lang="en">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<div class="titlepage"><div><div><h3 class="title">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<a name="id2593116"></a>It's not working; how can I figure out what's wrong?</h3></div></div></div>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<p>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson The best solution to solving installation and
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson configuration issues is to take preventative measures by setting
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson up logging files beforehand. The log files provide a
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson source of hints and information that can be used to figure out
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson what went wrong and how to fix the problem.
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson </p>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson</div>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson</div>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<div class="sect1" lang="en">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<div class="titlepage"><div><div><h2 class="title" style="clear: both">
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<a name="id2593128"></a>Incrementing and Changing the Serial Number</h2></div></div></div>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<p>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson Zone serial numbers are just numbers-they aren't date
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson related. A lot of people set them to a number that represents a
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson date, usually of the form YYYYMMDDRR. A number of people have been
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson testing these numbers for Y2K compliance and have set the number
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson to the year 2000 to see if it will work. They then try to restore
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson the old serial number. This will cause problems because serial
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson numbers are used to indicate that a zone has been updated. If the
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson serial number on the slave server is lower than the serial number
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson on the master, the slave server will attempt to update its copy of
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson the zone.
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson </p>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson<p>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson Setting the serial number to a lower number on the master
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson server than the slave server means that the slave will not perform
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson updates to its copy of the zone.
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson </p>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson<p>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson The solution to this is to add 2147483647 (2^31-1) to the
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson number, reload the zone and make sure all slaves have updated to
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson the new zone serial number, then reset the number to what you want
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson it to be, and reload the zone again.
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson </p>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson</div>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson<div class="sect1" lang="en">
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson<div class="titlepage"><div><div><h2 class="title" style="clear: both">
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson<a name="id2593145"></a>Where Can I Get Help?</h2></div></div></div>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson<p>
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson The Internet Systems Consortium
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson (<acronym class="acronym">ISC</acronym>) offers a wide range
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson of support and service agreements for <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym> servers. Four
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson levels of premium support are available and each level includes
a1747570262ed336c213aaf6bd31bc91993a46deAndreas Gustafsson support for all <acronym class="acronym">ISC</acronym> programs,
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson significant discounts on products
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson and training, and a recognized priority on bug fixes and
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson non-funded feature requests. In addition, <acronym class="acronym">ISC</acronym> offers a standard
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson support agreement package which includes services ranging from bug
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson fix announcements to remote support. It also includes training in
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym>.
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson </p>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson<p>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson To discuss arrangements for support, contact
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson <a href="mailto:info@isc.org" target="_top">info@isc.org</a> or visit the
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson <acronym class="acronym">ISC</acronym> web page at
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson <a href="http://www.isc.org/services/support/" target="_top">http://www.isc.org/services/support/</a>
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson to read more.
7693d4de8fca501dfe6989a7f30d8d3c86fe096aAndreas Gustafsson </p>
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6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson<td width="40%" align="left" valign="top">Chapter�7.�<acronym class="acronym">BIND</acronym> 9 Security Considerations�</td>
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6017f424ee3c02d7f22132c77576ea38542fa949Andreas Gustafsson<td width="40%" align="right" valign="top">�Appendix�A.�Appendices</td>
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