How to Create DNS Delegation in Domain Controller?

To create a DNS delegation in a domain controller, open Server Manager and add your DNS server to it if it's not already present.

Here's a step-by-step guide:

1. Open Server Manager: Launch Server Manager on your domain controller.

2. Add the DNS Server (if needed): If your DNS server is not listed in Server Manager, right-click "All Servers" and select "Add Servers." You can add the DNS server by its IP address.

3. Open DNS Manager: From Server Manager, go to "Tools" and select "DNS".

4. Navigate to the Forward Lookup Zone: In DNS Manager, expand the server, expand "Forward Lookup Zones," and then right-click the zone where you want to create the delegation.

5. Start the New Delegation Wizard: Select "New Delegation..." This will launch the New Delegation Wizard.

6. Specify the Delegated Domain: Click "Next". Enter the name of the subdomain you are delegating (e.g., "sales" if you are delegating sales.example.com). Click "Next."

7. Add Name Servers: Click "Add..." to add the name servers that are authoritative for the delegated zone. You will need to enter the fully qualified domain name (FQDN) and IP address of each name server.

8. Verify and Complete: Review the delegation settings and click "Finish" to create the delegation.

Explanation of DNS Delegation:

DNS delegation is the process of assigning responsibility for a subdomain to a different set of name servers. This is useful when you want to manage a portion of your domain with a separate DNS infrastructure. For example, you might delegate sales.example.com to a separate set of name servers managed by your sales team. This allows them to control the DNS records for their subdomain without affecting the rest of your domain.

Example Scenario:

Let's say your domain is example.com, and you want to delegate the sales.example.com subdomain to a different server. You would perform the following steps:

1. Follow the steps above to create a new delegation in the example.com zone.

2. In the "Delegated Domain Name" step, you would enter "sales".

3. In the "Name Servers" step, you would add the name servers that are authoritative for the sales.example.com zone. For example:

   Server FQDN	IP Address
   ns1.salesdomain.com	192.168.1.10
   ns2.salesdomain.com	192.168.1.11

Troubleshooting:

• Ensure the name servers you are delegating to are properly configured and authoritative for the delegated zone.
• Verify that the IP addresses of the name servers are correct.
• Allow sufficient time for the delegation to propagate throughout the DNS system.