Amir: An Active Multi-Path Inter-Domain Routing Protocol

The current inter-domain routing protocol (BGP) selects only single route for each destination prefix, which may not satisfy the ISP´s requirements of routing visibility and controllability. Recent proposals for source routing and overlay networks enhanced the end-to-end path control for end users, but leaved the transit ASes with little control to routes. In this paper, we propose an active multi-path inter-domain routing protocol called AMIR that can be deployed incrementally as an extension to today´s BGP protocol. In AMIR, routers learn default best routes and some candidate routes from their neighbors and make decision to satisfy the custom needs. A simulation instance illustrates the AMIR offers more visibility and controllability in inter-domain routing.