Reducing burst packet loss through route-free forwarding

Abstract

It is well known that today's inter-domain routing protocol, Border Gateway Protocol (BGP), converges slowly during network failures. Due to the distribution nature of Internet routing decisions and the rate-limiting timer Minimum Route Advertisement Interval (MRAI) of BGP, unavoidable convergence latency is introduced in reaction to network changes. During the period of convergence temporarily routing table inconsistencies cause short-term routing blackholes and loops which result in widespread temporary burst packet loss. In this paper, we present ROute-Free Forwarding (ROFF) -a novel technique for packet delivering continuously during periods of convergence. With slightly modifications on IP packet header and BGP, route loops and blackholes can be avoided. Our preliminary evaluation demonstrates that ROFF succeeds in reducing the number of Autonomous Systems (ASes) which experience burst packet loss and the duration of packet loss.

Research on the Architecture of a Basic Reconfigurable Information Communication Network

“…Therefore, it is bound to lead to this kind of enhancement which is patchwork, which cannot blend with the core function of network effectively. This kind of weak core architecture naturally leads to low basic capacity of information network, and it is unable to guarantee some high-level requirements [7]. Specifically solving the following two problems becomes imperative.…”