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Microsoft Windows 2000 DNS and UNIX BIND DNS Interoperability Tim Rains Technical Lead Networking Te

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Title: Microsoft Windows 2000 DNS and UNIX BIND DNS Interoperability Tim Rains Technical Lead Networking Te


1
Microsoft Windows 2000 DNS and UNIX BIND DNS
Interoperability Tim RainsTechnical Lead
Networking TeamProduct Support
ServicesMicrosoft Corporation
2
Session Abstract
  • One feature of Microsoft Windows 2000 Domain
    Name System (DNS) is support for dynamic updates
  • Windows 2000 DNS can be deployed in environments
    that have no other DNS servers
  • Windows 2000 DNS can be deployed in environments
    that already have non-dynamic DNS servers
  • Microsoft Windows NT 4.0 DNS
  • BIND 4.9.7 and earlier
  • This session will explore deployment options and
    some known issues integrating BIND and Windows
    2000 DNS

3
Terms to Understand
  • BIND (Berkeley Internet Name Daemon)
  • UNIX-based DNS server
  • Active Directory Domain
  • A security and replication boundary
  • Also referred to as a Windows NT domain
  • DNS Domain
  • A namespace that identifies a group of network
    devices
  • Follows RFCs 1034, 1035, 1123, et cetera

4
DNS Planning Factors
  • Types of clients
  • Use of static IP addresses
  • Types of DNS servers
  • Active Directory site structure
  • Namespace design
  • Internet presence

5
Types of Clients
  • Will your clients be dynamically updating DNS?
  • By default, Windows 2000 and Windows XP clients
    attempt to dynamically update DNS.
  • Legacy clients are not able to dynamically update
    DNS themselves.
  • Use NetBIOS and WINS instead

6
Use of Static IP Addresses
  • Will your clients be using static IP addresses or
    a DHCP supplied configuration?
  • Windows 2000 DHCP server can dynamically update
    DNS for clients.
  • Useful for legacy clients
  • Note DNS servers themselves require static IP
    addresses.

7
Types of DNS Servers
  • Several configurations to consider
  • Primary DNS servers
  • Secondary DNS servers
  • Active Directory-integrated DNS servers
  • DNS forwarders
  • Caching-only DNS servers

8
Active Directory Site Structure
  • Sites used to manage network bandwidth
  • Single site vs. multiple sites
  • DNS servers at each site

9
Namespace Design
  • Integrate with existing DNS namespace
  • Ensure clients can resolve internal and external
    names
  • Simplify user experience

10
Namespace Design (2)
  • Active Directory domain name and DNS domain name
    the same?
  • Contiguous namespace vs. Disjointed namespace
  • Contiguous namespace child domain always
    contains name of parent
  • Example dev.reskit.com as a subdomain of
    reskit.com
  • Disjointed namespace child domain does not share
    parent's name
  • Example reskit.com and microsoft.com where both
    are domains operated by same organization

11
Internet Presence
  • If you have an Internet presence, you have
    options
  • Use a registered domain name for Active Directory
    root domain
  • Use a delegated subdomain for Active Directory
    root domain
  • Use a reserved private domain name for Active
    Directory root domain

12
Internet Presence (2)
  • Use a single domain name for public and private
    networks
  • Use different domain name for public and private
    networks

13
Current DNS Infrastructure
  • Existing DNS infrastructure does not necessarily
    have to be replaced
  • Windows 2000 Active Directory and DNS can be
    integrated into existing DNS infrastructure
  • Windows 2000 Active Directory requires
  • Dynamic DNS update support
  • DNS SRV record support

14
Existing BIND Infrastructure
  • Existing BIND DNS infrastructure can be used
  • Prior to version 4.9.7
  • No dynamic update support
  • No SRV record support
  • Version 4.9.7 and later supports SRV records
  • Recommend using version 8.2.2 or later for
    dynamic update support

15
DNS Integration Options
  • Upgrade Windows NT 4.0 DNS servers to Windows
    2000
  • Provides dynamic update support
  • Migrate zones from non-dynamic authoritative DNS
    servers to servers running Windows 2000 DNS
  • BIND servers that do not support SRV records or
    dynamic updates
  • Q301192 HOW TO Migrate an Existing Domain Name
    System Infrastructure

16
DNS Integration Options (2)
  • Delegate child DNS domains under a parent DNS
    domain
  • Useful for Active Directory domain names that do
    not have the same name as root of zone
  • Delegate a subdomain to Windows 2000 DNS
  • Example Active Directory domain is
    dev.reskit.com and zone that contains name is
    reskit.com
  • Delegate dev.reskit.com to a Windows 2000-based
    server running DNS

17
DNS Integration Options (3)
  • Delegate each subdomain used by domain controller
    locator records (SRV records) to Windows 2000 DNS
  • _msdcs.reskit.com
  • _sites.reskit.com
  • _tcp.reskit.com
  • _udp.reskit.com
  • Most popular option
  • See the following Knowledge Base article for
    more details
  • Q255913 Integrating Windows 2000 DNS into an
    Existing Namespace

18
BIND Integration Issues
  • Q241973 Master Zone May Not Work with BIND DNS
    for Active Directory
  • Q257462 Dynamic Update Does Not Work Using BIND
    DNS Forwarder
  • Q260021 Event ID 6524 with DNS Incremental Zone
    Transfer Problem
  • Q279167 BIND 8.3 T5B Zone Transfers Do Not Work
    with Event 6524
  • Q297936 DNS and BIND Zone Transfers May Not
    Work
  • Q302639 Zone Transfers from BIND Version 9.x DNS
    Servers Do Not Work

19
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