Research on Interdomain Routing Control in SDN Architecture

Abstract

AbstractAiming at the difficulty of network management due to the coexistence of traditional BGP network and new SDN network, this paper proposes a routing update algorithm with clear interdomain structure and network exception handling ability. By defining SDN, BGP-SDN fusion and BGP three network domains, a packet transmission path with route discovery and update capability were formed through the three network domains in sequence. On the premise of reducing the communication delay range, the route update delay is set, and the exception handling mechanism is introduced. Specify the master controller to make the Interzone routing control rules and make routing updates a key parameter in the data flow table of border switches. The algorithm firstly ensures the absolute unimpeded communication between network domains, provides a reliable time guarantee for network exception handling, enhances the connection between control servers between network domains and between control servers and boundary switches, and improves the synchronization of multiple links in network communication. By using Mininet to build a simulation experiment platform, the reliability and feasibility of the proposed algorithm are verified from the perspectives of data packet loss and Interzone route update delay, and it is suitable for application and implementation in the current Internet environment.