Quickstart

RPN - Quickstart

Reviewed on 31 July 2023 • Published on 26 May 2021

The RPN (Real Private Network) is a dedicated private network connected to the second network interface of your server. It allows you to exchange data between your servers over a private network that you control. This network provides high performance with very low latency and support of jumbo frames as standard. You can easily regroup your servers within your Private Network with a few clicks, regardless of their number or physical location. RPN v2 gives you the flexibility to build your architecture in a secure and isolated environment. You control everything and can setup your own VLANs, IP addresses ranges, subnets, routing tables and network gateways. RPN v2 also allows you to build security layers to manage your Private Network. Create a public group for your web server applications and place your backend applications in a private group without internet access. All that backed by an insane connectivity for extreme network performances.

Requirements:

You have an account and are logged into the Dedibox console
You have a Dedibox dedicated server with RPNv2 connectivity

How to create an RPNv2 group

Click on RPN > RPN groups in the menu on top of the console. Then click Local RPNv2 groups in the menu on the left. The RPNv2 groups page displays.
Click Add group. The add RPNv2 groups form displays.
Select the type of the group. It can either be Standard or Q-in-Q. Then enter the name of the group and select the servers to add to the group. Click Submit to confirm.
Note:
A VLAN ID is assigned automatically during the group creation. It is possible to modify the VLAN ID with values between 1 and 3967.

How to configure the RPN interface

Below you find configuration instructions for the most common operating systems. For more information refer to our how-to about RPNv2 interface configuration.

How to configure RPNv2 on Debian

Install the vlan package by running the following command:
```
sudo apt-get install vlan
```

Edit your /etc/network/interfaces file as follows (assuming your RPN NIC is eth1 and your VLAN ID is 3900):

auto eth1.3900
iface eth1.3900 inet static
    address my.pri.vate.address
    netmask my.custom.net.mask

How to configure RPNv2 on Ubuntu

Note:

The following configuration example uses Netplan. If you are using a classic network configuration, refer to the Debian documentation.

network:
    version: 2
    renderer: networkd
    ethernets:
        mainif:
            match:
                macaddress: "de:ad:be:ef:ca:fe"
            set-name: mainif
            addresses: [ "10.3.0.5/23" ]
            gateway4: 10.3.0.1
            nameservers:
                addresses: [ "8.8.8.8", "8.8.4.4" ]
                search: [ example.com ]
    vlans:
        vlan15:
            id: 15
            link: mainif
            addresses: [ "10.3.99.5/24" ]

How to configure RPNv2 on CentOS

In the following ‘how to’ we assume your RPN NIC is eth1.

Create a configuration file for the parent interface, called /etc/sysconfig/network-scripts/ifcfg-eth1:
```
DEVICE=eth1
TYPE=Ethernet
BOOTPROTO=none
ONBOOT=yes
```
Create another file for the vlan interface (assuming the VLAN ID is 3900). The file is called /etc/sysconfig/network-scripts/ifcfg-eth1.3900:
```
DEVICE=eth1.3900
BOOTPROTO=none
ONBOOT=yes
IPADDR=my.pri.vate.address
PREFIX=CIDR.Netmask
NETWORK=my.private.address.0
VLAN=YES
```

How to configure Jumboframes

The RPN supports Jumboframes with a maximum payload of 9000 bytes. You need to configure your RPN interface to send pacekets with a MTU 9000. For more information refer to our how to: Configuration of Jumboframes

CentOS

Open the file /etc/sysconfig/network-scripts/ifcfg-ethX, where X is the number of your interface, in a text editor. Then add the following line to it:
```
MTU="9000"
```
Restart the network service:
```
service network restart
```

Debian

Open the file /etc/network/interfaces in a text editor and insert mtu 9000 below the line iface ethX inet static:
```
auto ethX
iface ethX inet static
mtu 9000
[...]
```
Restart the network service:
```
service network restart
```

Ubuntu

Open the Netplan configuration file /etc/netplan/01-netcfg.yaml in a text editor and add the line mtu: 9000 in the configuration of the RPN interface:

ethernets:
    enp3s0:
        dhcp4: true
    enp4s0:
        addresses:
            - 192.168.0.10/24
        gateway4: 192.168.0.1
        mtu: 9000
        nameservers:
            addresses:
                - 1.1.1.1
                - 2.2.2.2

Save the file, exit the text editor and reload the network configuration:
```
sudo netplan apply
```