Virtual MAC addresses

The virtualization requires in general the addition of IP addresses.

On this page you can find information related to the network configuration and virtual MAC addresses.

Availability of virtual MAC addresses

You can verify the availability of virtual MAC addresses by referencing to the page available options for dedicated server offers .

Network modes

Virtualization requires adding additional IP addresses to your server.

In general there are two connectivity modes possible for the network:

  • Bridge
  • NAT

Bridged network

In bridge mode your server and your virtual machines are seen as different servers in the level of the network equipment.

By default, there is no other network equipment allowed on our network except for the MAC of your physical network card.

If you start a virtual machine in bridge mode, a protection will be activated on the switch and your network port will be closed.

To solve this problem you can add virtual MAC addresses, which are allowed on the network.

NATed network

With a NAT configuration you don't require the virtual MAC addresses.

Your server and its virtual machines are seen as one single server, only the MAC address of your physical network card is broadcasted on the network.

Adding virtual MAC addresses

A virtual MAC address is related to a Failover IP, there fore you need to order a failover IP before you can configure the virtual MAC.

To configure your IP failover, go to your servers status page.

Your failover IP has to be routed to your server, if this is not the case you need to configure your IP failover.

Once the failover IP is activated, click on Add a virtual MAC to access the management page for MAC addresses.

Click on the little cogwheel-icon next to the IP of which you want to add a MAC to see the available options. The MAC address have reserved manufacturers / organizations. Choose the virtualization solution that you intend to use with your server:

  • Organizationally Unique Identifier VMWare: 00:50:56
  • Organizationally Unique Identifier Xen: 00:16:3e
  • Organizationally Unique Identifier KVM: 52:54:00

If your software is not listed, you must take a MAC that matches as best as possible to put it in manually the settings of your VM. The software you use does not matter..

Once the virtual MAC is activated, use it to configure the network of your VM.

Use one MAC with multiple IPs

You can use a single MAC address with multiple IPs, for example to add more than one IP to a VM, you can find more about it in the documentation about multi IP virtual MACs.