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Public VCF as-a-Service - Setting up your network after vSphere to Public VCF as-a-Service migration

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Learn how to configure your network after migrating from VMware vSphere to Public VCF as-a-Service

Objective

This guide explains the necessary steps to configure your environment after migrating from your managed VMware vSphere on OVHcloud services to a managed Public VCF as-a-Service solution.

These modifications are essential to ensure the proper functioning of your virtual machines and networks.

Requirements

Instructions

Step 1: Update virtual machine network settings

After migration, you need to update the network configurations of your virtual machines (VMs).

To set the network configuration to DHCP (recommended):

1. Go to the network settings of each VM.

2. Change the IP assignment mode to DHCP.

DHCP setting

3. Make sure the Guest customization settings are set to Disabled before modifying the NIC settings.

Disabled setting

Step 2: Handling the IP addressing bug in Public VCF as-a-Service

Networks are pre-created with placeholder Gateway CIDRs, as the actual VM subnets are unknown beforehand.

This can lead to IP assignment issues if not addressed post-migration.

Identified issue

  • If a static IP is manually assigned to a VM and does not match the pre-configured Gateway CIDR, the assignment will fail.
  • You will not be able to create or update a VM with manual IP assignment outside the predefined Gateway CIDR.

Solutions

1. Use DHCP mode (recommended)

  • Setting all IP modes to DHCP works seamlessly, even if the OS is configured with a static IP.
  • This approach is valid for both isolated networks and VM Networks*.
DHCP mode

2. Create a new network

  • Customers can create a new network with the correct subnet.
  • This solution works only if the customer has a single public IP range.

Go further

For training or technical assistance implementing our solutions, contact your sales representative or visit our Professional Services page to request a quote and have your project analysed by our experts.

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