Secondary Zones are a DNS feature that allows the entire DNS database from a Master DNS server to be transferred to the Secondary. A Secondary Zones allows an organization to provide fault tolerance and load balancing to internal names. In addition to being able to resolve names to a private namespace or speed up name resolution to a public namespace without the use of Conditional Forwarders or Stub Zones.
Primarily it contains records like, Start of Authority(SOA), Name Server(NS) and Host(A) records. It saves on bandwidth by not replicating all the data. Unlike secondary, it doesn’t replicate all the data from the primary DNS server. Steps to configure Stub Zone in DNS Server 2012 R2. Click on Start button, select the down arrow and select DNS.
When a Secondary DNS server is configured it will request a zone transfer from a DNS Server maintaining the Master database for a zone. If the Master has been configured to allow zone transfers with the Secondary the entire database will be transferred. Once a secondary receives the database from the master it will now perform all name resolution request for the namespace locally. If the client query is not part of the authoritative namespace, it starts a name resolution process beginning with a root name server and continues the process until the name is resolved. The Secondary database is kept up to date via zone transfers from the Master.
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Scenario.
Two organizations, USSHQ and Dulce Base need to be able to share resources. A trust relationship between the two organizations Active Directory Domain Services is desired, but neither organization name space can be resolved through public name resolution. In order to configure the trust relationship name resolution need to be configured. One option for name resolution is to use a DNS Secondary Zone. DNS Secondary Zones in each domain will be configured to allow for the resolution to occur for other organization namespace. All other names needing resolved will use the default name resolution method.
If a computer from Dulce Base attempts to contact a computer in USSHQ it is unable to resolve the name. See figure below, the same result would occur going the other direction.
Configuring the source DNS server to allow for zone transfers (steps will be accomplished on both DNS Servers).
Configuring a Secondary Zone (Same steps will be accomplished in both DNS servers).
Note: The zone transfer may take a few minutes to occur, keep refreshing the screen and be patient.
Name resolution will now succeed from DulceBase.Local to USSHQ.Local. Once the DNS administrator completes the configuration on the USSHQ.Local DNS server name resolution will succeed from USSHQ.Local to DulceBase.local.
As you can see configuring a Secondary Zone is a simple fix to resolving names in a private network when public name resolution fails. But, does require the Administrator of the Master Zone to allow zone transfers with your organization before the zone will actually transfer.
Windows Server Dns Zone Transfer Dig
Until next time, RIDE SAFE!
Rick Trader
Windows Server Instructor – Interface Technical Training Phoenix, AZ You May Also Like![]() ![]()
2008 R2, 2012, Server 2003
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