AS-Path Prepending
Pedro de Botelho Marcos, Lars Prehn, Lucas dos Santos Leal, Alberto Dainotti, Anja Feldmann, Marinho Pilla Barcellos · 2020
Inbound traffic engineering (ITE)---the process of announcing routes to, e.g., maximize revenue or minimize congestion---is an essential task for Autonomous Systems (ASes). AS Path Prepending (ASPP) is an easy to use and well-known ITE technique that routing manuals show as one of the first alternatives to influence other ASes' routing decisions. We observe that origin ASes currently prepend more than 25% of all IPv4 prefixes.