OVH Guides

Configure an IP address on a virtual machine

Learn how to configure an IP address on a virtual machine

Last updated 1/02/2018

Objective

After you have created a virtual machine (VM), you can assign a public or private IP address.

This guide explains how to carry out this configuration.

Requirements

  • You must have already created a virtual machine.
  • You will need an IP block.

Instructions

Retrieve your information

You can retrieve the information of your public IP address block directly from the vSphere client, by going to the Hosts and Clusters section. Click on your cluster and click on the Manage tab, then OVH Network.

Configuration on the OVH Network

On each block delivered by OVH, five IP addresses are reserved for configuring the network and must never be used for your virtual machines. The first and the last four IP addresses in the block are reserved for this purpose.

This is how a Private Cloud IP block is organised:

  • The first IP address that is marked as (Reserved) corresponds to the network address
  • The IP addresses that follow it can be used for your virtual machines. The are marked as (Available) if no VM is using them, or as (Used) if they are being used
  • The last four IP addresses in the block are reserved: two are dedicated to OVH routers for operating the block, and the other two are used for the gateway and broadcast

Advanced configuration on the OVH Network

Configure a public IP address

To configure a public IP address on your virtual machine, you must first choose the VMNetwork interface in your VM network adapter settings:

VMNetwork

Linux

Here is a configuration example on a Debian 8 operating system:

IP Interface

auto eth0
iface eth0 inet static
address 46.105.220.xxx
netmask 255.255.255.240
broadcast 46.105.220.xxx
gateway 46.105.220.xxx
dns-nameservers 213.186.33.99

Mount the adapter using an ifup in your interface.

You can also check the configuration with an ifconfig.

If your virtual machine cannot find the network, try checking that the network adapter is configured on VMNetwork and not on LocalPortGroup or a VLAN. Check also that the adapter’s connection box is ticked.

Windows

Here is a configuration example for Windows 2012 R2.

In the configuration panel, go to Network and Internet, then Network and Sharing Centre, and then Change Network Adapter.

To speed up the process, you can click on the Windows search field and write Run (or press the Windows and R keys at the same time). The Windows command console will open, and you can enter this command:

ncpa.cpl

Right-click on the corresponding VMNetwork adapter and click Properties. Then select TCP/IPv4 protocol and click again on Properties, then enter your IP information as follows:

Configuration on Windows

IP address: 46.105.220.xxx
Subnet mask: 255.255.255.240
Default gateway: 46.105.220.yyy
DNS server: 213.186.33.99

Configure a private IP address

The process for configuring a private IP address is similar to that of a public IP address. However, you must use the network adapter configured for your VLAN or VXLAN.

In your interface options, you can edit the following settings:

  • On an SDDC, a VLAN interface (10 to 20 by default, but you can create more)

  • On a Private Cloud, a VXLAN interface (vxw-dvs, etc.). If you need more VXLANs, you can open a support ticket

SDDC

In your virtual machine settings, you must use a VLAN:

VLAN for SDDC

Private Cloud

In your virtual machine settings, you must use a VXLAN:

VXLAN on the Private Cloud

Linux

Here is a configuration example on a Debian 8 operating system:

Private IP address on Linux

By editing the interfaces file, you can assign a private IP address on your chosen IP range:

auto eth0
iface eth0 inet static
address 192.168.70.1
netmask 255.255.255.0
gateway 192.168.70.254

Mount the adapter using an ifup in your interface.

You can also check the configuration with an ifconfig.

Windows

Here is a configuration example for Windows 2012 R2:

In the configuration panel, go to Network and Internet, then Network and Sharing Centre, and then to Change Network Adapter.

To speed up the process, you can click on the Windows search field and write Run (or press the Windows and R keys at the same time). The Windows command console will open, and you can enter this command:

ncpa.cpl

Right-click on the corresponding VMNetwork adapter and click Properties. Then select TCP/IPv4 protocol and click again on Properties, then enter your IP information as follows:

Configure a public IP address on Windows

By modifying this interface, you can assign a private IP address on your chosen IP range:

IP address: 192.168.70.2
Subnet mask: 255.255.255.0
Default gateway: 192.168.70.254

Go further

Join our community of users on https://community.ovh.com/en/.


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