Adaptive routing in OSPF networks with distrustful nodes

Abstract

This article addresses the problem of ensuring QoS (Quality of Service) in networks using the OSPF (Open Shortest Path First) protocol while considering trust in relay nodes. A routing approach is proposed that takes into account traffic transmission requirements regarding delays and bandwidth while considering the presence of untrusted nodes in the network environment. The method developed based on this approach allows route adaptation depending on traffic type, ensuring security for confidential data and efficiency for real-time processed data. Simulation showed that in the case of the presence of nodes in the network connected by enhanced quality channels but with low trust, the proposed method ensures traffic delivery to such nodes but does not use them as transit nodes when alternative paths to the destination node exist. The advantages of the method include consideration of bandwidth and delays during routing and selection of secure routes that do not include untrusted nodes if such routes exist. This allows its use in computer networks based on the OSPF protocol for creating adaptive routes.