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Adding a Network Tier to a VPC

Network tiers are fundamental components within a Virtual Private Cloud (VPC) that enable you to segment your virtual network environment into logical subnets. Each tier can host a group of virtual machines (VMs) with its own isolated network settings, firewall rules, and routing controls.

This section walks you through the process of creating a new network tier within an existing VPC using the Cloud Management Portal.

1. Accessing the VPC Section :​

  • Log in to your Cloud Management Portal using your authorized credentials.

  • From the left navigation pane, go to:

    Network → VPC

  • You will see a list of all existing VPC networks associated with your cloud account.

2. Select and Configure the Target VPC :​

  • Identify the VPC to which you wish to add a new network tier.

  • Click on the VPC name to open its configuration view.

  • On the VPC details page, click the Configure button to enter the VPC topology view.

3. Initiate Network Tier Creation :​

  • In the VPC topology view, click on the Create Network button.
  • A popup window will appear prompting you to enter the tier’s configuration details.

4. Provide Network Tier Configuration :​

  • Fill in the following fields in the popup form:

    • Name : Enter a unique name for the network tier. Use meaningful names based on workload, environment, or function (e.g., Web-Tier, Database-Tier).

    • Network Offering : Select the desired network offering for this tier. The portal typically includes options such as:

      • Internal LB (for internal load balancing).

      • DefaultIsolatedNetworkOfferingForVpcNetworksNoLB (standard isolated network without load balancing)

      • DefaultIsolatedNetworkOfferingForVpcNetworks (includes basic network services with LB support)

    • Gateway : Specify the gateway IP address for this tier. Ensure the IP is within the VPC CIDR block and does not overlap with other existing network tiers.
      For example, if your VPC CIDR is 10.0.0.0/16, your network tier can use 10.0.1.1 as a gateway.

    • Netmask : Define the subnet mask that defines the size of the network tier.

      For example, 255.255.255.0 for a /24 subnet allows up to 254 usable IPs.

    • ACL : Choose a Network Access Control List (ACL) to control both inbound (ingress) and outbound (egress) traffic for the network tier.

      ACLs enable fine-grained firewall policies between VPC tiers and the internet.

      For demo or open access, select the predefined Default_Allow ACL.

5. Confirm and Create :​

  • Review all entered details carefully.

  • Click the Add button to initiate the creation of the network tier.

6. Verify Network Tier Status :​

  • After a few moments, the new network tier will be added and displayed visually within the VPC topology view.