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5a58787efeb02a1c3f06569d019ad81fd2efa06end<link rel="prev" href="Bv9ARM.ch07.html" title="Chapter�7.�BIND 9 Security Considerations">
5a58787efeb02a1c3f06569d019ad81fd2efa06end<link rel="next" href="Bv9ARM.ch09.html" title="Appendix�A.�Release Notes">
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9124bd631acffcf0a44789785377735f172b4b7fgryzor<tr><th colspan="3" align="center">Chapter�8.�Troubleshooting</th></tr>
f086b4b402fa9a2fefc7dda85de2a3cc1cd0a654rjung<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a>�</td>
3b3b7fc78d1f5bfc2769903375050048ff41ff26nd<td width="20%" align="right">�<a accesskey="n" href="Bv9ARM.ch09.html">Next</a>
1ef822109accf82b8861e22d92fea722f57ae537nd<a name="Bv9ARM.ch08"></a>Chapter�8.�Troubleshooting</h1></div></div></div>
1ef822109accf82b8861e22d92fea722f57ae537nd<dt><span class="section"><a href="Bv9ARM.ch08.html#common_problems">Common Problems</a></span></dt>
1ef822109accf82b8861e22d92fea722f57ae537nd<dd><dl><dt><span class="section"><a href="Bv9ARM.ch08.html#id-1.9.2.2">It's not working; how can I figure out what's wrong?</a></span></dt></dl></dd>
5a58787efeb02a1c3f06569d019ad81fd2efa06end<dt><span class="section"><a href="Bv9ARM.ch08.html#id-1.9.3">Incrementing and Changing the Serial Number</a></span></dt>
5a58787efeb02a1c3f06569d019ad81fd2efa06end<dt><span class="section"><a href="Bv9ARM.ch08.html#more_help">Where Can I Get Help?</a></span></dt>
5a58787efeb02a1c3f06569d019ad81fd2efa06end<div class="titlepage"><div><div><h2 class="title" style="clear: both">
5a58787efeb02a1c3f06569d019ad81fd2efa06end<a name="common_problems"></a>Common Problems</h2></div></div></div>
5a58787efeb02a1c3f06569d019ad81fd2efa06end<a name="id-1.9.2.2"></a>It's not working; how can I figure out what's wrong?</h3></div></div></div>
5a58787efeb02a1c3f06569d019ad81fd2efa06end The best solution to solving installation and
5a58787efeb02a1c3f06569d019ad81fd2efa06end configuration issues is to take preventative measures by setting
5a58787efeb02a1c3f06569d019ad81fd2efa06end up logging files beforehand. The log files provide a
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen source of hints and information that can be used to figure out
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen what went wrong and how to fix the problem.
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen<div class="titlepage"><div><div><h2 class="title" style="clear: both">
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen<a name="id-1.9.3"></a>Incrementing and Changing the Serial Number</h2></div></div></div>
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen Zone serial numbers are just numbers — they aren't
d5082de325fb6351c6bd34d28df0b43ec5a8ac90erikabele date related. A lot of people set them to a number that
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen represents a date, usually of the form YYYYMMDDRR.
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen Occasionally they will make a mistake and set them to a
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen "date in the future" then try to correct them by setting
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen them to the "current date". This causes problems because
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen serial numbers are used to indicate that a zone has been
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen updated. If the serial number on the slave server is
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen lower than the serial number on the master, the slave
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen server will attempt to update its copy of the zone.
d5082de325fb6351c6bd34d28df0b43ec5a8ac90erikabele Setting the serial number to a lower number on the master
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen server than the slave server means that the slave will not perform
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen updates to its copy of the zone.
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen The solution to this is to add 2147483647 (2^31-1) to the
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen number, reload the zone and make sure all slaves have updated to
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen the new zone serial number, then reset the number to what you want
d5082de325fb6351c6bd34d28df0b43ec5a8ac90erikabele it to be, and reload the zone again.
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen<div class="titlepage"><div><div><h2 class="title" style="clear: both">
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen<a name="more_help"></a>Where Can I Get Help?</h2></div></div></div>
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl The Internet Systems Consortium
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl (<acronym class="acronym">ISC</acronym>) offers a wide range
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl of support and service agreements for <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym> servers. Four
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl levels of premium support are available and each level includes
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl support for all <acronym class="acronym">ISC</acronym> programs,
9a58dc6a2b26ec128b1270cf48810e705f1a90dbsf significant discounts on products
9a58dc6a2b26ec128b1270cf48810e705f1a90dbsf and training, and a recognized priority on bug fixes and
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl non-funded feature requests. In addition, <acronym class="acronym">ISC</acronym> offers a standard
9a58dc6a2b26ec128b1270cf48810e705f1a90dbsf support agreement package which includes services ranging from bug
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl fix announcements to remote support. It also includes training in
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym>.
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl To discuss arrangements for support, contact
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl <a class="link" href="mailto:info@isc.org" target="_top">info@isc.org</a> or visit the
9a58dc6a2b26ec128b1270cf48810e705f1a90dbsf <a class="link" href="http://www.isc.org/services/support/" target="_top">http://www.isc.org/services/support/</a>
f61ec47ec494705bd2d02b5b6fe021e5c193f2c8noodl to read more.
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen<td width="40%" align="right">�<a accesskey="n" href="Bv9ARM.ch09.html">Next</a>
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen<td width="40%" align="left" valign="top">Chapter�7.�<acronym class="acronym">BIND</acronym> 9 Security Considerations�</td>
d5082de325fb6351c6bd34d28df0b43ec5a8ac90erikabele<td width="20%" align="center"><a accesskey="h" href="Bv9ARM.html">Home</a></td>
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen<td width="40%" align="right" valign="top">�Appendix�A.�Release Notes</td>
47bbfaa3a2ea0afb775a3aa3e7dbf8a71ea1b966rbowen<p xmlns:db="http://docbook.org/ns/docbook" style="text-align: center;">BIND 9.11.3 (Extended Support Version)</p>