Creating a fixed address in Universal DDI (2590)

Scenario

A Windows machine running security monitoring software was recently added to the network. It obtained an IP address via DHCP; however, due to the security monitoring software component, this Windows machine needs to consistently receive the same IP address, and the firewall team had already reserved a different IP address.

Your task is to configure a fixed address for this Windows machine in Universal DDI so that the Windows machine will always receive the same IP address via DHCP. Once configured, verify that the Windows machine receives the correct IP address that was chosen by the firewall team.

Estimated Completion Time

• 15 to 20 minutes

Prerequisites

• Administrative access to the Infoblox Portal

• Lab 2801: Deploying BloxOne Hosts

• Lab 2570: Configuring DHCP Services in Universal DDI 

• Lab 2571: Creating DHCP Network in Universal DDI

Learning Content

• Enabling DHCP Service

• Creating DHCP Option Groups

• Creating IP Spaces, Address Blocks, and Subnets

• Creating Ranges, Fixed Address, and Reservations

Tasks

1. Identify the MAC address of the Windows client

2. Create a fixed address in the Infoblox Portal

3. Verify that the client obtains the correct address via DHCP

Task 1: Identify the MAC address of the Windows client

Access your lab’s testing-windows machine and identify the MAC address. Note down its current IP address.

Task 2: Create a fixed address in the Infoblox Portal

Create a fixed address on the Infoblox Portal. This binds the MAC address of the testing-windows machine to the address 172.31.10.20.

Task 3: Verify that the client obtains the correct address via DHCP

Return to the virtual machine testing-windows to verify that it has obtained the correct IP address (172.31.10.20) via DHCP.

Solutions

Task 1 Solution: Identify the MAC address of the Windows client

Log in to the testing-windows VM and check its IP address and MAC address. You’ll need the MAC address to configure the fixed address, and the current IP address will help you verify later that the fixed address is working.

1. Log in to your lab’s testing-windows.

2. Open Command Prompt from the taskbar

3. Use the command ipconfig /all and note down the IP and MAC address.

   

Task 2 Solution: Create a fixed address in the Infoblox Portal

Now that you have the current IP address and MAC address of the testing-windows VM. Proceed to configure a fixed address 172.31.10.20 for this client in the Infoblox Portal.

1. Use your Education Infoblox Portal Credentials to log into the Infoblox Portal.

2. Navigate to Configure → Networking → IPAM/DHCP.

3. Click on the IP Space Techblue Networks

4. Click on the network 172.31.0.0/16 and then click on subnet 172.31.101.0/24

5. Click Create > Fixed Address

6. Use the IP address 172.31.101.20.

7. Select MAC Address in the Assigned by field.

8. In the MAC Address field, enter the MAC address of the Windows machine

   

9. Click Save & Close

Task 3 Solution: Verify that the client obtains the correct address via DHCP

Return to the virtual machine testing-windows and verify that it has obtained the correct IP address (172.31.10.20) via DHCP.

1. Switch back to the VM, testing-windows.

2. Click on the Tools folder on the desktop.

3. Inside the folder, you would find a file - interface-dhcp.bat

4. Right-click on the file and click Run as administrator

5. Click Yes to the User Access Control pop-up.

6. Open Command Prompt from the taskbar

7. Use the command ipconfig /release

8. Now, use the command, ipconfig /renew

   

9. Check the output to see if the IPv4 Address shows 172.31.101.20. This confirms that the fixed address has been assigned to the client.