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hardware components can provide information and notification of events. WMI
simplifies the instrumentation of various drivers and applications written for
Windows, provides detailed and extensible information that is consistent across
different vendors' products, and allows for consistent access to Windows
instrumentation from non-Windows environments.
Among other services, WMI supports the monitoring and management of the DNS
servers, zones and records. It allows enlisting and modification of the DNS servers
and zones properties, enumeration of the zones and resource records, update of
the resource records and creation of the new zones. The WMI allows an
administrator writing an automated application managing the DNS objects. The
WMI method provider enables these applications to invoke methods that are
defined on the DNS server.
Interoperability Issues
In this section the issues that may arise when Microsoft DNS servers are used in
the mixed environment with non-Microsoft DNS servers are discussed. Because it is
RFC compliant, the Microsoft DNS server is fully interoperable with all other RFC
compliant DNS servers. However, since the Microsoft DNS server provides a wider
spectrum of features than specified in the RFC, the user is advised to exercise
caution using these features. These features are limited to the use of WINS and
WINSR resource records (as they are specified in the Windows NT 4.0 DNS white
paper) and to the use of the UTF-8 character encoding.
Using WINS and WINSR Records
Since currently only Microsoft DNS servers support the WINS and WINSR resource
records we recommend disabling replication of these records if all following
conditions are satisfied:
• the primary copy of the zone contains one of these records;
• at least one of the secondaries resides on the non-Microsoft DNS server.
At the same time, if the secondaries reside partially on Microsoft and non-Microsoft
DNS servers, disabling WINS and WINSR resource records replication may require
manual input of these records to the secondary zones residing on the Microsoft
DNS servers.
Using UTF-8 Characters Format
The Windows 2000 DNS server can be configured to allow or disallow the use of
UTF-8 characters on a per-server or per-zone basis. A non-UTF-8-aware DNS
server may accept a zone transfer of a zone containing UTF-8 names, but it may
not be able to write back those names to a zone file or reload those names from a
zone file. Administrators should exercise caution when transferring a zone
containing UTF-8 names to a non-UTF-8-aware DNS server.
Windows 2000 White Paper
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DESIGNING A DNS
NAMESPACE FOR THE
ACTIVE DIRECTORY