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a href="Bv9ARM.ch08.html#common_problems">Common Problems</
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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?</
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span class="section"><
a href="Bv9ARM.ch08.html#id-1.9.3">Incrementing and Changing the Serial Number</
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span class="section"><
a href="Bv9ARM.ch08.html#more_help">Where Can I Get Help?</
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0N/A The best solution to solving installation and
0N/A configuration issues is to take preventative measures by setting
0N/A up logging files beforehand. The log files provide a
0N/A source of hints and information that can be used to figure out
0N/A what went wrong and how to fix the problem.
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0N/A Zone serial numbers are just numbers — they aren't
0N/A date related. A lot of people set them to a number that
0N/A represents a date, usually of the form YYYYMMDDRR.
0N/A Occasionally they will make a mistake and set them to a
4311N/A "date in the future" then try to correct them by setting
0N/A them to the "current date". This causes problems because
0N/A serial numbers are used to indicate that a zone has been
0N/A updated. If the serial number on the slave server is
0N/A lower than the serial number on the master, the slave
0N/A server will attempt to update its copy of the zone.
0N/A Setting the serial number to a lower number on the master
0N/A server than the slave server means that the slave will not perform
0N/A updates to its copy of the zone.
0N/A The solution to this is to add 2147483647 (2^31-1) to the
0N/A number, reload the zone and make sure all slaves have updated to
0N/A the new zone serial number, then reset the number to what you want
0N/A it to be, and reload the zone again.
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h2 class="title" style="clear: both">
0N/A<
a name="more_help"></
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0N/A The Internet Systems Consortium
0N/A (<
acronym class="acronym">ISC</
acronym>) offers a wide range
0N/A of support and service agreements for <
acronym class="acronym">BIND</
acronym> and <
acronym class="acronym">DHCP</
acronym> servers. Four
0N/A levels of premium support are available and each level includes
0N/A support for all <
acronym class="acronym">ISC</
acronym> programs,
0N/A significant discounts on products
0N/A and training, and a recognized priority on bug fixes and
0N/A non-funded feature requests. In addition, <
acronym class="acronym">ISC</
acronym> offers a standard
0N/A support agreement package which includes services ranging from bug
0N/A fix announcements to remote support. It also includes training in
0N/A <
acronym class="acronym">BIND</
acronym> and <
acronym class="acronym">DHCP</
acronym>.
0N/A To discuss arrangements for support, contact
0N/A <
a class="link" href="mailto:info@isc.org" target="_top">info@isc.org</
a> or visit the
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acronym class="acronym">ISC</
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td width="40%" align="left" valign="top">Chapter�7.�<
acronym class="acronym">BIND</
acronym> 9 Security Considerations�</
td>
4311N/A<
td width="40%" align="right" valign="top">�Appendix�A.�Release Notes</
td>