Research On Interdomain Routing Path Inconsistency Problem In Trustworthy And Controllable Network

Trustworthy and Controllable Network (TCN) separates control plane from data plane and constructs an independent control plane to realize controllability and trustworthiness. Network routing plays an important role in the study of TCN. To get more revenues, AS often announces a routing path different from its own data forwarding path to neighbor nodes, which causes the path inconsistency problem. ASes revenues are harmed by the problem and the stability of interdomain routing is destoryed. Thus, how to handle the issue becomes a hotspot in the study of TCN.Prior work studied the topic from the aspects of inconsistent path detection and control. They have got certain achievements while they are still facing some challenges. First, the result of existing inconsistent path detection mechanism could be influenced easily and it did not try to locate the malicious AS in the path, which could not support the following work. Second, the existing inconsistent path control methods could not take control measures on ASes, which could not solve the problem effectively.This dissertation studies the path inconsistency problem to provide an efficient and feasible solution. First, we present a malicious AS detection mechanism for the interdomain routing inconsistent path, which detects the path and discovers the malicious node to lay the foundation for follow-up work; Second, we propose a control strategy to eliminate malicious AS incentive of lying in which we formalize malicious AS incentive of lying and eliminate its incentive of lying; Third, we propose a Software-Defined Networking (SDN) based interdomain routing control mechanism to realize the routing control strategy in the actual network; Finally, we develop several modules on the trustworthy and controllable network experimental platform to verify the feasibility and effectiveness of the theoretical work in this dissertation.This dissertation studies the path inconsistency problem and contributes to the work of controllable and trustworthy network. With the development of Internet, the work in this dissertation will defend network revenue of ASes and guarantee the stability of interdomain routing, which contributes to the security of Internet.