Policy Based Routing

From Teltonika Networks Wiki

The information on this page is updated in accordance with the 00.07.07.1 firmware version .

Introduction


Policy-based routing (PBR) is a technique used in computer networking to direct network packets based on defined criteria beyond the standard destination-based routing. Unlike traditional routing, which forwards packets solely based on their destination address, PBR allows administrators to customize routing decisions according to various factors such as source address, type of service, protocol, or application.

With policy-based routing, network administrators can implement specific rules or policies to dictate the path that packets should take through the network. This flexibility enables organizations to optimize traffic flow, prioritize certain types of traffic, enforce security measures, and manage network resources more efficiently.

Prerequisites & Topology


Before proceeding with the confuration, ensure that all requirements are met:

  1. Before starting you need to have 3 different WAN connections. In this case we are going to use: Wi-fi WAN, Wired WAN and Mobile WAN.

Configuration


If you're having trouble finding this page or some of the parameters described here on your device's WebUI, you should turn on "Advanced WebUI" mode. You can do that by clicking the "Advanced" button, located at the top of the WebUI.

Configuring VLANs


Open router‘s WebUI and navigate to Network → VLAN → Port Based configuration:

Port based VLAN


Add new VLANs by clicking and Make following changes:

  1. VLAN ID: 1 | lan1: Untagged | Lan2: Off | Lan3: Off | lan4: Untagged | Wan: Off
  2. VLAN ID: 3 | lan1: Off | Lan2: Untagged | Lan3: Off | lan4: Off | Wan: Off
  3. VLAN ID: 5 | lan1: Off | Lan2: Off | Lan3: Untagged | lan4: Off | Wan: Off


Configuring Different LAN Networks


Open router’s WebUI → Network → LAN click on current available LAN interface configuration:

LAN1 General Settings


Make the following changes:

  1. Enter Name : LAN_VLAN_ETH0

LAN1 Physical Settings


Make the following changes:

  1. Select Interface : eth0

Add new LAN netwrok by clicking and Make following changes:

LAN2 General Settings


Make the following changes:

  1. Enable Interface: on
  2. Enter Name : LAN_VLAN_3
  3. Enter IPV4 address: 192.168.3.1
  4. Select IPV4 netmask: 255.255.255.0
  5. Enable DHCPv4: on

LAN2 Physical Settings


Make the following changes:

  1. Select Interface : eth0.3

Add new LAN netwrok by clicking and Make following changes:

LAN3 General Settings


Make the following changes:

  1. Enable Interface: on
  2. Enter Name : LAN_VLAN_5
  3. Enter IPV4 address: 192.168.5.1
  4. Select IPV4 netmask: 255.255.255.0
  5. Enable DHCPv4: on

LAN3 Physical Settings


Make the following changes:

  1. Select Interface : eth0.5

After configuring all LAN interfaces the end result should look something like this:

Configuring Policy Based Routing


Open WebUI → Network → Routing → Policy based routing → Add new instance and create new instances for each available WAN in this case Wi-Fi WAN, Wired-WAN and Mobile:

Creating WifiWan Routing Table


Add new instance:

  1. Enter ID: 1
  2. Enter New configuration name: WifiWan

click in the new window make following changes:

Static IPv4 Routes

click and aplly this to the route:

  1. Select Interface: WifiWan | Enter Target: '0.0.0.0 | Enter IPv4-Netmask: 0.0.0.0


Creating WireWan Routing Table


Add new instance:

  1. Enter ID: 3
  2. Enter New configuration name: WiredWan

click in the new window make following changes:

Static IPv4 Routes

click and aplly this to the route:

  1. Select Interface: wan | Enter Target: '0.0.0.0 | Enter IPv4-Netmask: 0.0.0.0

Creating Mobile Wan Routing Table


Add new instance:

  1. Enter ID: 5
  2. Enter New configuration name: MwWan

click in the new window make following changes:

Static IPv4 Routes

click and aplly this to the route:

  1. Select Interface:mob1s1a1 | Enter Target: '0.0.0.0 | Enter IPv4-Netmask: 0.0.0.0