DNS DHCP Migration

in the case of AD migration how to proceed with DNS DHCP Migration
SM_exchangeAsked:
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R RITCommented:
Computer account migration will automatically create these dns values. for DHCP you can restore database to new and enable scope. Disable DHCP from old before enabling on new.
DLeaverCommented:
I have used this in the past for DHCP migration

http://blogs.technet.com/b/networking/archive/2008/06/27/steps-to-move-a-dhcp-database-from-a-windows-server-2003-or-2008-to-another-windows-server-2008-machine.aspx

It works well and even on the later OS versions.

As stated above you should disable DHCP on the source.  You then need to adjust the scope/server options within the DHCP console to point to the new values for DNS, then activate the scope.
To avoid any issues with conflicting IP addresses it would be advisable to enable conflict detection on the DHCP server properties.  This basically sends a ping message out to the IP that is about to be assigned before assigning it to make sure it is not in use - keep it enabled for 24 hours then disable it again.

As stated above DNS will replicate naturally as will the AD objects
Will SzymkowskiSenior Solution ArchitectCommented:
Are you migrating to a new Active Directory Domain? Or are you just promoting a newer DC OS in to the domain? Please provide more detail.

Will.
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SandeshdubeySenior Server EngineerCommented:
You can promote the DC as DNS server while promoting in new forest or while migration from Windows Server 2000/2003 to Windows Server 2008/2012,etc. While promoting ensure that you check the dns and GC role. In case if you have missed it install the dns role and ensure the correct dns setting in NIC properties the dns zone will be replicated.

Best practices for DNS client settings on DC and domain members.
http://abhijitw.wordpress.com/2012/03/03/best-practices-for-dns-client-settings-on-domain-controller/

Adding first Windows Server 2008 R2 Domain Controller within Windows 2000/2003 network
http://kpytko.wordpress.com/2011/08/24/adding-first-windows-server-2008-r2-domain-controller-within-windows-2000-network-2/
http://kpytko.wordpress.com/2011/08/25/adding-first-windows-server-2008-r2-domain-controller-within-windows-2003-network/

Windows Server 2012 Simplifies Active Directory Upgrades and Deployments
http://www.windowsitpro.com/article/scripting-tools-and-products/windows-server-2012-simplifies-active-directory-upgrades-deployments-143654

For DHCP migration you can refer this:http://www.rebeladmin.com/2014/11/step-by-step-guide-to-migrate-dhcp-from-windows-server-2003-to-windows-server-2012-r2/
SM_exchangeAuthor Commented:
thanks
SM_exchangeAuthor Commented:
@will yes we are planning to promote DC 2003 with DNS installed to Dc 2012 including DNS
SM_exchangeAuthor Commented:
SM_exchangeAuthor Commented:
can someone please tell me how to migrate DNS

old DC 2003
New DC 2012/2008
compdigit44Commented:
IF the DC are on the same Domain and are AD integrated there is nothing to do. All records / zones are replicated between DC's in the same forest / domain depending on your replication scope

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SandeshdubeySenior Server EngineerCommented:
As already mention if you are promoting DC ensure you select the DNS & GC role.You can refer below article. If the dns zone is AD integrated the zone information will be replicated to new DC.

http://blogs.technet.com/b/canitpro/archive/2013/05/05/step-by-step-adding-a-windows-server-2012-domain-controller-to-an-existing-windows-2003-network.aspx
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