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Today diagnosing problems, deploying new services, testing protocol interactions, or validating network configurations are still largely unsolved problems for both enterprise and Internet Service Provider (ISP) networks. Due to the intrinsically distributed nature of network state, frequent timing dependencies, and sources of non-determinism involved, any change may introduce undesired effects-even...
Existing models for Internet Autonomous System (AS) topology generation make structural assumptions about the AS graph. Those assumptions typically stem from beliefs about the true properties of the Internet, e.g. hierarchy and power-laws, which arise from incorrect interpretations of incomplete observations of the AS topology. In this paper we compare AS topology generation models with several observed...
Newly announced IP addresses (from previously unused IP blocks) are often unreachable. It is common for network operators to filter out address space which is known to be unallocated ("bogon" addresses). However, as allocated address space changes over time, these bogons might become legitimately announced prefixes. Unfortunately, some ISPs still do not configure their bogon filters via...
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