This tutorial guides you through the process of creating an internal network on. An internal network can be used to connect instances together without internet connectivity. If needed, an OpenStack router can be created to allow for internet connectivity and allow for associating floating IPs
First we need to create an internal network. For this tutorial we will name it internal-network.
However, feel free to assign a name of your choice to the network.
Step 1: Log in to the OpenStack dashboard and proceed to the Network tab.
Step 2: Select Networks and then click on the Create Network button.
Step 3: Enter the required details in the following fields:
Step 4: Click on subnet and fill in the following fields:
Step 5: Navigate to Subnet Details and fill in the following information:
Leave all other fields blank, then click on Create.
We’ll proceed to create an OpenStack router. In this tutorial, we’ll name it internal-network-router,
indicating its connection to the internal-network network. However, feel free to name the router as per your preference.
Step 1: Navigate to the Network tab and select Routers.
Step 2: Initiate the router creation process by clicking on the Create Router button.
Step 3: Enter details in the following fields:
Step 4: Locate the router you’ve just created and click on the small arrow next to it. From the dropdown menu, select Set Gateway.
Step 5: Opt for the net-float pool and confirm by clicking on Set Gateway.
Step 6: Select the router you created and navigate to the Interfaces tab.
Step 7: Begin adding an interface by clicking on Add Interface. Enter the required information in the following fields:
Step 8: Click on Add Interface to add the interface.