How to configure redundant Microsoft DNS servers
I need to add a second DNS server for redundancy. I currently have an active directory domain, with one of the DC's running DNS services. I would like to add DNS to my second DC so that both can act as DNS servers.
Can anyone guide me in this area?
Thanks!
Can anyone guide me in this area?
Thanks!
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Hello again,
Do you have a good result in your topology?
Don't hesitate contact again.
Regards
Do you have a good result in your topology?
Don't hesitate contact again.
Regards
The process is as follows:
Install Windows 2003 on the new machine
Assign the new computer an IP address and subnet mask on the existing network
Make sure that the preferred DNS server on new machine points to the existing DNS Server on the Domain (normally the existing domain controller)
Join the new machine to the existing domain as a member server
From the command line promote the new machine to a domain controller with the DCPROMO command from the command line Select Additional Domain Controller in an existing Domain
Once Active Directory is installed then to make the new machine a global catalog server, go to Administrative Tools, Active Directory Sites and Services, Expand ,Sites, Default first site and Servers. Right click on the new server and select properties and tick the"Global Catalog" checkbox. (Global catalog is essential for logon as it needs to be queried to establish Universal Group Membership)
Assuming that you were using Active Directory Integrated DNS on the first Domain Controller, DNS will have replicated to the new domain controller along with Active Directory.
If you are using DHCP you should spread this across the domain controllers, In a simple single domain this is easiest done by Setting up DHCP on the second Domain controller and using a scope on the same network that does not overlap with the existing scope on the other Domain Controller. Don't forget to set the default gateway (router) and DNS Servers. Talking of which all the clients (and the domain controllers themselves) need to have their Preferred DNS server set to one domain controller, and the Alternate DNS to the other, that way if one of the DNS Servers fails, the clients will automatically use the other.
Install Windows 2003 on the new machine
Assign the new computer an IP address and subnet mask on the existing network
Make sure that the preferred DNS server on new machine points to the existing DNS Server on the Domain (normally the existing domain controller)
Join the new machine to the existing domain as a member server
From the command line promote the new machine to a domain controller with the DCPROMO command from the command line Select Additional Domain Controller in an existing Domain
Once Active Directory is installed then to make the new machine a global catalog server, go to Administrative Tools, Active Directory Sites and Services, Expand ,Sites, Default first site and Servers. Right click on the new server and select properties and tick the"Global Catalog" checkbox. (Global catalog is essential for logon as it needs to be queried to establish Universal Group Membership)
Assuming that you were using Active Directory Integrated DNS on the first Domain Controller, DNS will have replicated to the new domain controller along with Active Directory.
If you are using DHCP you should spread this across the domain controllers, In a simple single domain this is easiest done by Setting up DHCP on the second Domain controller and using a scope on the same network that does not overlap with the existing scope on the other Domain Controller. Don't forget to set the default gateway (router) and DNS Servers. Talking of which all the clients (and the domain controllers themselves) need to have their Preferred DNS server set to one domain controller, and the Alternate DNS to the other, that way if one of the DNS Servers fails, the clients will automatically use the other.
ASKER
Great answers - As it turns out, by the time I read the responses it was already replicated and good to go! I just didn't wait long enough. Sorry for the delay in closing out the question.
Thanks again!
Thanks again!
MS says that DNS server should only point to themselve, no another DNS server need to be specified, because a deadlock in DNS resolution can occurs.