BGP AS (Autonomous System) prepending is a technique used to influence the inbound traffic by making a particular Autonomous System path less attractive. This is achieved by adding the AS number multiple times to the AS path attribute of BGP updates sent to a neighbor. The idea is to make the AS path longer, and therefore less preferred, in order to influence incoming traffic.
Here’s a general guide on how to configure BGP AS prepending:
Continue reading “How to configure BGP AS Prepending”