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How to setup DHCP redundancy (50/50) on Windows 2008

To setup windows DHCP redundancy, you can set up two DHCP servers applying 50/50 configuration (or 80/20 if you don't have enough IP addresses. This article will show you how to do it step by step.

A. Install DHCP

B. Configure DHCP server applying with 50/50 rule

1. In the first DHCP server, run Server Manager from Administrative Tools.
2. In the console tree of Server Manager, right-click the Roles node.

3. Navigate to DHCP Server>domain name>IPv4>Scope (10.2.0.0)>Address Pool.

4. Add the IP range, for example, 10.2.0.1 to 10.2.0.254. Exclude IP range for static IP addresses, for example, 10.2.0.1 - 10.2.0.10 and 10.2.0.100 - 10.2.0.254. In this case the first DHCP will assign IP addresses between 10.2.0.11 to 10.2.0.99.

5. Following the step 1 to 3 In the second DHCP.

6. .Add the same IP range 10.2.0.1 to 10.2.0.254. Exclude IP range for static IP addresses, in this case, 10.2.0.1 - 10.2.0.99 and 10.2.0.200 - 10.2.0.254. In this case the first DHCP will assign IP addresses between 10.2.0.100 to 10.2.0.199.

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