---
title: "Configuring the vRack on the OVHcloud Load Balancer"
description: "The vRack is a dedicated private network that creates a link between all your cloud products. For more information, please visit our vRack page."
url: https://docs.us.ovhcloud.com/en/network/load-balancer/configuring-vrack-ovhcloud
lang: en
---
> For AI agents: the complete documentation index is available at https://docs.us.ovhcloud.com/en/llms.txt, the full documentation bundle is available at https://docs.us.ovhcloud.com/en/llms-full.txt.

# Configuring the vRack on the OVHcloud Load Balancer

The vRack is a dedicated private network that creates a link between all your cloud products. For more information, please visit our [vRack page](https://us.ovhcloud.com/network/vrack/).

Before starting, we suggest reading our [Introduction to the OVHcloud Load Balancer](https://docs.us.ovhcloud.com/en/network/load-balancer/use-presentation.md) guide.

**Warning:**

**NOTE:** Once linked to your vRack, the clusters of your Load Balancer will be unable to communicate with your servers via their public IP addresses. You will then be forced to use their private IP address inside the vRack.

 

## Instructions

### Listing Load Balancer services eligible for vRack

You can consult the list of your Load Balancer services that can be connected to a vRack.

The `serviceName` in the API below is the one for your vRack, e.g., `pn-1234`.

[GET /vrack/{serviceName}/eligibleServices](https://api.us.ovhcloud.com/console/?section=/vrack&branch=v1#get-/vrack/-serviceName-/eligibleServices)

You will find your Load Balancer services in the index: `ipLoadbalancing`.

You can also see the eligibility of a particular Load Balancer service through the 'vrackEligibility' attribute of the call response:

[GET /ipLoadbalancing/{serviceName}](https://api.us.ovhcloud.com/console/?section=/ipLoadbalancing&branch=v1#get-/ipLoadbalancing/-serviceName-)

 

### Linking a Load Balancer service to a vRack

To attach your Load Balancer service to your vRack, here is the relevant API call:

[POST /vrack/{serviceName}/ipLoadbalancing](https://api.us.ovhcloud.com/console/?section=/vrack&branch=v1#post-/vrack/-serviceName-/ipLoadbalancing)

As previously mentioned, the `serviceName` here is the name of your vRack, e.g., `pn-1234`.

 

### Configuring a vRack network

To work, your Load Balancer needs to know the network topology that you use within your vRack and have a range of IP addresses specifically dedicated to it within that network. This IP address range will be used to contact your servers in your vRack. No other IP addresses will be used to communicate with your servers.

[POST /ipLoadbalancing/{serviceName}/vrack/network](https://api.us.ovhcloud.com/console/?section=/ipLoadbalancing&branch=v1#post-/ipLoadbalancing/-serviceName-/vrack/network)

Example configuration:

- serviceName: loadbalancer-1234...
- subnet: 192.168.0.0/16
- natIp: 192.168.100.0/24
- vlan: 42

The natIp block must be contained in your subnet.

Once your network is created, you will need to retrieve its `vrackNetworkId` for the configuration of your clusters.

To find out the minimum range size to be assigned to natIp, an API call is available.

[GET /ipLoadbalancing/{serviceName}/vrack/networkCreationRules](https://api.us.ovhcloud.com/console/?section=/ipLoadbalancing&branch=v1#get-/ipLoadbalancing/-serviceName-/vrack/networkCreationRules)

 

### Setting up a server cluster linked to a vRack

You can now create your server cluster in the vRack. To do so, configure your TCP or HTTP cluster as usual, and fill in the `vrackNetworkId` you previously obtained in the field of the same name.

[POST /ipLoadbalancing/{serviceName}/http/farm](https://api.us.ovhcloud.com/console/?section=/ipLoadbalancing&branch=v1#post-/ipLoadbalancing/-serviceName-/http/farm)

[POST /ipLoadbalancing/{serviceName}/tcp/farm](https://api.us.ovhcloud.com/console/?section=/ipLoadbalancing&branch=v1#post-/ipLoadbalancing/-serviceName-/tcp/farm)

 

### Continuing the configuration

You can now use the usual API call or even the client area to continue configuring the Load Balancer.

As a reminder, a configuration guide for the Load Balancer is [available here](https://docs.us.ovhcloud.com/en/network/load-balancer/create-http-https.md).

 

## Go further

Browse all the [Load Balancer guides](https://docs.us.ovhcloud.com/en/network/load-balancer/landing-page-load-balancer.md).

Browse the rest of the [OVHcloud US documentation](https://docs.us.ovhcloud.com/en/index.md) for guides on our other products and services.

Learn more about [Load Balancer](https://us.ovhcloud.com/network/load-balancer/) on the OVHcloud US website.