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ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - Copyright (C) 2004-2010 Internet Systems Consortium, Inc. ("ISC")
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - Copyright (C) 2000-2003 Internet Software Consortium.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - Permission to use, copy, modify, and/or distribute this software for any
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - purpose with or without fee is hereby granted, provided that the above
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - copyright notice and this permission notice appear in all copies.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt - PERFORMANCE OF THIS SOFTWARE.
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ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<link rel="start" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual">
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ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<link rel="prev" href="Bv9ARM.ch07.html" title="Chapter�7.�BIND 9 Security Considerations">
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<link rel="next" href="Bv9ARM.ch09.html" title="Appendix�A.�Appendices">
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<tr><th colspan="3" align="center">Chapter�8.�Troubleshooting</th></tr>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a>�</td>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<td width="20%" align="right">�<a accesskey="n" href="Bv9ARM.ch09.html">Next</a>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<div class="titlepage"><div><div><h2 class="title">
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<a name="Bv9ARM.ch08"></a>Chapter�8.�Troubleshooting</h2></div></div></div>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2601700">Common Problems</a></span></dt>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<dd><dl><dt><span class="sect2"><a href="Bv9ARM.ch08.html#id2601705">It's not working; how can I figure out what's wrong?</a></span></dt></dl></dd>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2601785">Incrementing and Changing the Serial Number</a></span></dt>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2601802">Where Can I Get Help?</a></span></dt>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<div class="titlepage"><div><div><h2 class="title" style="clear: both">
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<a name="id2601700"></a>Common Problems</h2></div></div></div>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<div class="titlepage"><div><div><h3 class="title">
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<a name="id2601705"></a>It's not working; how can I figure out what's wrong?</h3></div></div></div>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt The best solution to solving installation and
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt configuration issues is to take preventative measures by setting
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt up logging files beforehand. The log files provide a
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt source of hints and information that can be used to figure out
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt what went wrong and how to fix the problem.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<div class="titlepage"><div><div><h2 class="title" style="clear: both">
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<a name="id2601785"></a>Incrementing and Changing the Serial Number</h2></div></div></div>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt Zone serial numbers are just numbers — they aren't
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt date related. A lot of people set them to a number that
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt represents a date, usually of the form YYYYMMDDRR.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt Occasionally they will make a mistake and set them to a
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt "date in the future" then try to correct them by setting
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt them to the "current date". This causes problems because
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt serial numbers are used to indicate that a zone has been
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt updated. If the serial number on the slave server is
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt lower than the serial number on the master, the slave
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt server will attempt to update its copy of the zone.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt Setting the serial number to a lower number on the master
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt server than the slave server means that the slave will not perform
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt updates to its copy of the zone.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt The solution to this is to add 2147483647 (2^31-1) to the
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt number, reload the zone and make sure all slaves have updated to
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt the new zone serial number, then reset the number to what you want
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt it to be, and reload the zone again.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<div class="titlepage"><div><div><h2 class="title" style="clear: both">
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<a name="id2601802"></a>Where Can I Get Help?</h2></div></div></div>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt The Internet Systems Consortium
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt (<acronym class="acronym">ISC</acronym>) offers a wide range
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt of support and service agreements for <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym> servers. Four
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt levels of premium support are available and each level includes
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt support for all <acronym class="acronym">ISC</acronym> programs,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt significant discounts on products
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt and training, and a recognized priority on bug fixes and
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt non-funded feature requests. In addition, <acronym class="acronym">ISC</acronym> offers a standard
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt support agreement package which includes services ranging from bug
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt fix announcements to remote support. It also includes training in
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym>.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt To discuss arrangements for support, contact
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt <a href="mailto:info@isc.org" target="_top">info@isc.org</a> or visit the
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt <acronym class="acronym">ISC</acronym> web page at
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt <a href="http://www.isc.org/services/support/" target="_top">http://www.isc.org/services/support/</a>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt to read more.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a>�</td>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<td width="40%" align="right">�<a accesskey="n" href="Bv9ARM.ch09.html">Next</a>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<td width="40%" align="left" valign="top">Chapter�7.�<acronym class="acronym">BIND</acronym> 9 Security Considerations�</td>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<td width="20%" align="center"><a accesskey="h" href="Bv9ARM.html">Home</a></td>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt<td width="40%" align="right" valign="top">�Appendix�A.�Appendices</td>