Feasibility Study on Distributed Simulations of BGP

D. Coudert, Luc Hogie, Aurélien Lancin, D. Papadimitriou, S. Pérennes, Issam Tahiri
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引用次数: 6

Abstract

The Autonomous System (AS) topology of the Internet (up to 61k ASs) is growing at a rate of about 10% per year. The Border Gateway Protocol (BGP) starts to show its limits in terms of the number of routing table entries it can dynamically process and control. Due to the increasing routing information processing and storage, the same trend is observed for routing model simulators such as DRMSim specialized in large-scale simulations of routing models. Therefore, DRMSim needs enhancements to support the current size of the Internet topology and its evolution (up to 100k ASs). To this end, this paper proposes a feasibility study of the extension of DRMSim so as to support the Distributed Parallel Discrete Event paradigm. We first detail the possible distribution models and their associated communication overhead. Then, we analyze this overhead by executing BGP on a partitioned topology according to different scenarios. Finally, we conclude on the feasibility of such a simulator by computing the expected additional time required by a distributed simulation of BGP compared to its sequential simulation.
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BGP分布式仿真的可行性研究
Internet的自治系统(Autonomous System, AS)拓扑(最多61k AS)正以每年10%左右的速度增长。边界网关协议(Border Gateway Protocol, BGP)在动态处理和控制路由表项的数量方面开始显现出局限性。由于路由信息处理和存储的增加,路由模型模拟器(如专门用于大规模路由模型仿真的DRMSim)也出现了同样的趋势。因此,DRMSim需要增强以支持当前Internet拓扑的大小及其演变(最多100k as)。为此,本文提出了DRMSim扩展的可行性研究,以支持分布式并行离散事件范式。我们首先详细介绍可能的分布模型及其相关的通信开销。然后,我们根据不同的场景,通过在分区拓扑上执行BGP来分析这种开销。最后,我们通过计算BGP分布式模拟与顺序模拟相比所需的预期额外时间,得出了这种模拟器的可行性。
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