VXLAN Configuration Example

From Teltonika Networks Wiki

VXLAN support has been introduced starting with firmware version 00.07.09 and later. It is advised to update to the latest firmware available.

The information in this page is updated in accordance with 00.07.09.1 firmware version.

Introduction

VXLAN (Virtual Extensible LAN) encapsulates Layer 2 Ethernet frames within Layer 3 packets, creating a Layer 2 network over a Layer 3 infrastructure. It acts as a virtual switch, interconnecting routers and all devices connected to them into an extended Layer 2 network, enhancing scalability and flexibility. In this article several methods to configure a VXLAN tunnel between two Teltonika devices will be demonstrated.

Prerequisites

  • Two routers with installed VXLAN packages, will refer to these as RUT1 and RUT2
  • End device like Laptop or Mobile Phone
  • Two Public IP addresses for configuring VXLAN over the Mobile network
  • One Public IP address for configuring VXLAN over the VPN tunnel


VXLAN package Installation

First, install the VXLAN package on both RUT1 and RUT2 devices. This package is available on firmware version 07.09 and later, therefore, updating the router's firmware is a mandatory step if it is outdated. After the update, the package can be found in the Package Manager in the WebUI.

Navigate to System > Package Manager

  1. In the search bar look for vxlan packet
  2. Click Install

VXLAN over Wired WAN

In this section, the setup of VXLAN over Wired WAN using RUT1 and RUT2 devices will be described. The process will show how to create a VXLAN tunnel to connect the devices and allow them to communicate over the wired network.

Configuration on RUT1 device

Navigate to the Network > WAN section in the WebUI, then click the Edit button for the wired WAN interface.

Configuration window will open. Adjust following:
  1. Ensure interface is Enabled
  2. Change Protocol to Static
  3. Enter Ipv4 address for communication in this Wired WAN network
  4. Select your preferable IPv4 netmask
  5. Click twice

Navigate to the Network > Devices

  1. In Add new device section select Type VXLAN
  2. Press

  2. Enter name of the new VXLAN interface
  3. Enter the Remote address corresponding to RUT2 wired WAN interface IP address
  4. Click twice

Navigate to Network > LAN and click Edit to modify existing LAN interface

  1. Asure that Bridge interfaces option is enabled
  2. Click on the droplist and add vxlan1 interface
  3. Click twice

Configuration on RUT2 device

The configuration steps for RUT2 are similar to those performed on RUT1, with some additional adjustments. Navigate to the Network > WAN section in the WebUI, then click the Edit button for the wired WAN interface.

Configuration window will open. Adjust following:

  1. Ensure interface is Enabled
  2. Change Protocol to Static
  3. Enter Ipv4 address for communication in this Wired WAN network
  4. Select your preferable IPv4 netmask
  5. Click twice

Navigate to the Network > Devices

  1. In Add new device section select Type VXLAN
  2. Press

  2. Enter name of the new VXLAN interface
  3. Enter the Remote address corresponding to RUT1 wired WAN interface IP address
  4. Click twice

Navigate to Network > LAN and click Edit to modify existing LAN interface.

  1. For testing purposes, both routers should be part of the same LAN segment, so assign unique IP addresses to prevent conflicts.
  2. Additionally, only one DHCP server, so disable DHCP on RUT2.

  2. Asure that Bridge interfaces option is enabled
  3. Click on the droplist and add vxlan1 interface
  4. Click twice

Configuration testing

The best way to test the configuration after setting up VXLAN between the routers is to ping between devices on either side of the routers using their LAN IPs and check the ARP tables. This ensures that devices on the same LAN segment can communicate over the Layer 2 (L2) network through the routers.

Configuration testing from RUT1 side:

If the MAC address for the specified IP address in the ARP table matches the RUT2's MAC address, it confirms that the configuration is functioning correctly.


Configuration testing from RUT2 side:

Configuring VXLAN over Mobile network

In this section, VXLAN will be set up between two Teltonika devices using Mobile WAN, necessitating two public IPs—one for each RUT device. The LAN configuration will remain consistent, except for the Network > Devices section, where the remote address of the created VXLAN interface will be updated to reflect the other router's public IP.

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