Microsoft windows 2000 DNS manual Domain Locator

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zone file. Administrators should exercise caution when transferring a zone containing UTF-8 names to a non-UTF–8-aware DNS server.

The Domain Locator

The Windows 2000 Domain Locator, implemented in the Netlogon service, is a service that enables a client (the machine locating a Domain Controller (DC)) to locate a DC. It contains the IP/DNS compatible and Windows NT 4.0 compatible locators which provide interoperability in a mixed Windows 2000- and Windows NT- based 4.0 environment.

The domain controller location algorithm, shown in the flowchart below, is implemented as follows:

•The client collects the information needed to select a domain controller:

•The DNS domain name of the Active Directory domain the computer is joined to,

•The domain GUID of the queried domain. It will typically only be known if the domain being queried is the primary domain of the machine. If the domain GUID is not known, it is left blank,

•The site name. It is either obtained from a previous query or hard configuration. If neither is available, the site name is left blank.

•The NetLogon service first calls the DNS server using the IP/DNS Compatible Locator.

•If the machine running Netlogon service is not configured to use IP or DNS, or the IP/DNS Compatible Locator failed to discover a domain controller, the NetLogon service performs DC discovery using the Windows NT 4 Compatible Domain Locator.

•The information on the located domain controller is returned to the caller.

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Contents Windows 2000 DNS Microsoft Corporation. All rights reserved Contents Designing a DNS Namespace for the Active Directory Summary Page DNS Fundamentals Standards and Additional Reading Name Services in WindowsDraft-skwan-gss-tsig-04.txt GSS Algorithm for Tsig GSS-TSIG History of DNSHierarchy of DNS Domain Names Structure of DNSDNS and Internet Int/net/orgCom Edu Gov Mil Army Microsoft Mit MydomainDistributing the Database Zone Files and Delegation TTLMicrosoft My domain ftp Ntserver Replicating the DNS databaseQuerying the Database NEW Features of the Windows 2000 DNSName Server Resolver Root-server Gov Whitehouse.gov Time to Live for Resource Records Updating the DNS DatabaseActive Directory Storage and Replication Integration Active Directory Service Storage ModelWindows 2000 White Paper Zone Type Conversions Controlling Access to ZonesReplication Model Protocol Description Incremental Zone TransferSlave DNS Server Ixfr and DS Integration Dynamic UpdateZone Log File Master DNS ServerDynamic Update of DNS Records Update AlgorithmDhcp Client Mixed EnvironmentClient Reregistration Statically Configured ClientSecure Dynamic Update RAS ClientEstablishing a security context by passing security tokens Secure Dynamic Update Policy Controlling Update Access to Zones and Names DnsUpdateProxy GroupAging and Scavenging DNS Admins GroupAging and Scavenging Parameters DefaultEnableScavenging Scavenging Period DescriptionRecord Life Span Scavenging Algorithm Configuring Scavenging ParametersInteroperability Considerations Unicode Character SupportDomain Locator Finish IP/DNS Compatible Locator DNS Record Registration and Resolver RequirementsLdap.tcp.dc.msdcs.DnsDomainName Kerberos.tcp.dc.msdcs.DnsDomainName IP/DNS DC Locator Algorithm Finish Discovering Site specific DCsCaching Resolver Fully-Qualified Query Name ResolutionUnqualified Single-Label Query Using Global Suffix Search OrderUnqualified Multi-Label Query Using Primary and Per-adapter Domain NamesUnqualified Single-Label Query Scenarios Name Resolution ScenariosNegative Caching Fully-Qualified Query ScenariosMicrosoft Implementation of Negative Caching DNS Server List ManagementDNS Manager Administrative ToolsWMI Support for DNS Server Administration Using UTF-8 Characters Format Interoperability IssuesUsing Wins and Winsr Records Utilization DNS Server PerformanceReceiving Non-RFC Compliant Data Hardware components Sizing Server Capacity PlanningChoosing Names Internet Access ConsiderationsWindows 2000 White Paper Windows 2000 White Paper Windows 2000 White Paper VPN Com Yyy.com Zzz.com Windows 2000 White Paper Primary Zone YYY corporation ZZZ corporation VPN Firewall Computer Names Characters in NamesPer-Adapter Naming Full computer nameIntegrating ADS with Existing DNS Structure Domain name and sites. Active Directory domain name DNS Migration to Windows 2000 DNSPartitioning, and Replication Choosing your Zones Deploying DNS to Support Active DirectoryWins Referral Using Automatic ConfigurationIxfr Ixfr For More InformationWindows 2000 White Paper