OVH Guides

Using the OVH Network plugin

This guide will show you how to use the OVH Network plugin with your Private Cloud solution

Last updated on 02/10/2018


The OVH Network plugin was developed to allow for more focused management of the IP addresses linked to your Private Cloud solution.

This guide will show you how to use the OVH Network plugin with your Private Cloud solution.



Click on the Host and Cluster menu, then choose a datacentre or a cluster from the infrastructure. Click on Manage and OVH Network.

OVH Network plugin

You will then see the Summary section, which lists your IP blocks, along with some basic information about each of them.

Information about IPs and blocks

The 'IP Blocks'{.action} section gives a list of all the IPs in your block. Make sure not to use the five IPs that are reserved for the block's configuration and high availability, namely:

  • the first IP, which announces your block on the router
  • the last IP, which is for broadcast
  • the second to last IP, which is your gateway
  • the two IPs before the gateway, which are used as HSRP (Hot Standby Router Protocol) on the routers

IP Blocks

In order to show the OVH plugin that your public IPs are already being used, you must send an ARP request (arping) from the virtual machine(s) that use these addresses. Warning: some configurations with a virtual firewall don’t allow for tracing back MAC addresses if the ARP protocol isn’t authorised.

You can then configure your Reverse IPs for an email server, for example. This configuration process is also accessible via the OVH Control Panel and the OVH APIs. Click on the three vertical dots to the left of the IP, then on Edit Reverse

“Edit Reverse” button

Enter the Reverse, then validate by clicking Confirm.

Editing the Reverse

The Reverse is then displayed to the right of the IP, in the list of IP blocks.

Editing the IPs

Going further

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