OSPF and BGP State Migration for Resource-Portable IP Router

This paper proposes an Internet protocol (IP) state migration method for developing resource-portable IP routers that are not virtual-machine based but commercial based. Resource-portable IP routers have the potential for achieving a sustainable network by functioning as a shared backup router. While previous studies relied on a virtualized technology (e.g., a virtual machine-based router on commodity hardware), current commercial routers was not virtualized but implemented as a proprietary hardware and software. We achieved IP state migration for a proprietary router with control packet sniffing of the open shortest path first (OSPF) protocol and border gateway protocol (BGP) peer masquerade using a software-defined network controller. We implemented our method and verified the accuracy of the state migration of routing tables generated using OSPF and BGP.