Proof of Transit
Frank Brockners, Tal Mizrahi, Shwetha Bhandari, Stephen Youell, Sashank Dara · 2019
Several technologies such as Traffic Engineering (TE), Service Function Chaining (SFC), and policy based routing are used to steer traffic through a specific, user-defined path. This document defines mechanisms to securely prove that traffic transited said defined path. These mechanisms allow to securely verify whether, within a given path, all packets traversed all the nodes that they are supposed to visit.