AS-Path Prepending

Introduction

In this lesson, we will configure AS-Path Prepending to manipulate the path selection process in BGP. By adding our own Autonomous System (AS) number multiple times to the AS-path, we can make a specific path less preferred, influencing inbound traffic to our network. This technique is crucial in real-world scenarios where traffic engineering is necessary.

Quick Recap

In our previous lessons, we established a basic BGP configuration among the routers. The topology remains the same, with the following key devices and their IP addresses:

Router A (AS 65001) - 192.168.1.1
Router B (AS 65002) - 192.168.1.2
Router C (AS 65003) - 192.168.1.3