User Controlled Routing Exploiting PCEPS and Inter-domain Label Switched Paths

The UPIN project tackles the security issue of the Internet at its root, by providing more transparency and control over the network to the end user. Traffic Engineering is required to create paths across multiple domains following constraints set by the user. We present here the feasibility of using the Path Computation Element Communication Protocol Secure (PCEPS) to accomplish the goal of traffic steering - hence control - across multiple domains. Specifically, we leverage on IPv4 Segment Routing (SR) and a modified version of the Netphony Path Computation Element (PCE) to build a multi domain Label Switched Path (LSP) according to a user’s request. We present a proof of concept where we verify the correctness of the operation of the modified PCE code.