In the IP of the Beholder: Strategies for Active IPv6 Topology Discovery

Robert Beverly, Ramakrishnan Durairajan, D. Plonka, Justin P. Rohrer
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引用次数: 51

Abstract

Existing methods for active topology discovery within the IPv6 Internet largely mirror those of IPv4. In light of the large and sparsely populated address space, in conjunction with aggressive ICMPv6 rate limiting by routers, this work develops a different approach to Internet-wide IPv6 topology mapping. We adopt randomized probing techniques in order to distribute probing load, minimize the effects of rate limiting, and probe at higher rates. Second, we extensively analyze the efficiency and efficacy of various IPv6 hitlists and target generation methods when used for topology discovery, and synthesize new target lists based on our empirical results to provide both breadth (coverage across networks) and depth (to find potential subnetting). Employing our probing strategy, we discover more than 1.3M IPv6 router interface addresses from a single vantage point. Finally, we share our prober implementation, synthesized target lists, and discovered IPv6 topology results.
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在旁观者的IP:主动IPv6拓扑发现策略
IPv6互联网中现有的主动拓扑发现方法在很大程度上反映了IPv4的方法。鉴于大而稀疏的地址空间,结合路由器对ICMPv6速率的限制,本工作开发了一种不同的方法来实现互联网范围内的IPv6拓扑映射。我们采用随机探测技术,以分配探测负载,最小化速率限制的影响,并以更高的速率探测。其次,我们广泛分析了用于拓扑发现的各种IPv6命中列表和目标生成方法的效率和功效,并根据我们的经验结果合成新的目标列表,以提供广度(跨网络覆盖)和深度(寻找潜在的子网)。利用我们的探测策略,我们从一个有利位置发现了超过130万个IPv6路由器接口地址。最后,我们将分享我们的探测器实现、合成目标列表和发现的IPv6拓扑结果。
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