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c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews - Copyright (C) 2004-2011 Internet Systems Consortium, Inc. ("ISC")
a908d41cb4b0658c958383375c5a8f0bcaaf843dFrancis Dupont - Copyright (C) 2000-2003 Internet Software Consortium.
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews - Permission to use, copy, modify, and/or distribute this software for any
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews - purpose with or without fee is hereby granted, provided that the above
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c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews - REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews - INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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dbb012765c735ee0d82dedb116cdc7cf18957814Evan Hunt<link rel="prev" href="Bv9ARM.ch07.html" title="Chapter�7.�BIND 9 Security Considerations">
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<link rel="next" href="Bv9ARM.ch09.html" title="Appendix�A.�Appendices">
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c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<tr><th colspan="3" align="center">Chapter�8.�Troubleshooting</th></tr>
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2ae159b376dac23870d8005563c585acf85a4b5aEvan Hunt<div class="titlepage"><div><div><h2 class="title">
2ae159b376dac23870d8005563c585acf85a4b5aEvan Hunt<a name="Bv9ARM.ch08"></a>Chapter�8.�Troubleshooting</h2></div></div></div>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2602520">Common Problems</a></span></dt>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<dd><dl><dt><span class="sect2"><a href="Bv9ARM.ch08.html#id2602525">It's not working; how can I figure out what's wrong?</a></span></dt></dl></dd>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2602537">Incrementing and Changing the Serial Number</a></span></dt>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2602554">Where Can I Get Help?</a></span></dt>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<div class="titlepage"><div><div><h2 class="title" style="clear: both">
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<a name="id2602520"></a>Common Problems</h2></div></div></div>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<div class="titlepage"><div><div><h3 class="title">
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<a name="id2602525"></a>It's not working; how can I figure out what's wrong?</h3></div></div></div>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews The best solution to solving installation and
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews configuration issues is to take preventative measures by setting
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews up logging files beforehand. The log files provide a
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews source of hints and information that can be used to figure out
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews what went wrong and how to fix the problem.
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<div class="titlepage"><div><div><h2 class="title" style="clear: both">
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<a name="id2602537"></a>Incrementing and Changing the Serial Number</h2></div></div></div>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews Zone serial numbers are just numbers — they aren't
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews date related. A lot of people set them to a number that
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews represents a date, usually of the form YYYYMMDDRR.
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews Occasionally they will make a mistake and set them to a
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews "date in the future" then try to correct them by setting
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews them to the "current date". This causes problems because
ba751492fcc4f161a18b983d4f018a1a52938cb9Evan Hunt serial numbers are used to indicate that a zone has been
ba751492fcc4f161a18b983d4f018a1a52938cb9Evan Hunt updated. If the serial number on the slave server is
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews lower than the serial number on the master, the slave
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews server will attempt to update its copy of the zone.
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews Setting the serial number to a lower number on the master
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews server than the slave server means that the slave will not perform
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews updates to its copy of the zone.
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews The solution to this is to add 2147483647 (2^31-1) to the
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews number, reload the zone and make sure all slaves have updated to
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews the new zone serial number, then reset the number to what you want
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews it to be, and reload the zone again.
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<div class="titlepage"><div><div><h2 class="title" style="clear: both">
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<a name="id2602554"></a>Where Can I Get Help?</h2></div></div></div>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews The Internet Systems Consortium
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews (<acronym class="acronym">ISC</acronym>) offers a wide range
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews of support and service agreements for <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym> servers. Four
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews levels of premium support are available and each level includes
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews support for all <acronym class="acronym">ISC</acronym> programs,
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews significant discounts on products
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews and training, and a recognized priority on bug fixes and
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews non-funded feature requests. In addition, <acronym class="acronym">ISC</acronym> offers a standard
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews support agreement package which includes services ranging from bug
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews fix announcements to remote support. It also includes training in
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym>.
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews To discuss arrangements for support, contact
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews <a href="mailto:info@isc.org" target="_top">info@isc.org</a> or visit the
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews <acronym class="acronym">ISC</acronym> web page at
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews <a href="http://www.isc.org/services/support/" target="_top">http://www.isc.org/services/support/</a>
c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews to read more.
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c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<td width="40%" align="left" valign="top">Chapter�7.�<acronym class="acronym">BIND</acronym> 9 Security Considerations�</td>
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c3c8823fed039b3a2b8e5ca8bc2f3301d1dd840eMark Andrews<td width="40%" align="right" valign="top">�Appendix�A.�Appendices</td>