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[Books] BV01 DL : 0: 流分类算法中的一种，Scalable Packet Classification 非常有参考价值-Packet classification is important for applications such as firewalls, intrusion detection, and differentiated services. Existing algorithms for packet classification reported in the literature scale poorly in either time or space as filter databases grow in size. Hardware solutions such as TCAMs do not scale to large classifiers. However, even for large classifiers (say 100,000 rules), any packet is likely to match a few (say 10) rules. Our paper seeks to exploit this observation to produce a scalable packet classification scheme called Aggregated Bit Vector (ABV). Our paper takes the bit vector search algorithm (BV) described in [11] (which takes linear time) and adds two new ideas, recursive aggregation of bit maps and filter rearrangement, to create ABV (which can take logarithmic time for many databases). We show that ABV outperforms BV by an order of magnitude using simulations on both industrial firewall databases and synthetically generated databases.
Date : 2026-01-02 Size : 189kb User : Reguse
[Books] Lecture13 DL : 0: 讨论路由中的lookup及packet classification-CS 268: Route Lookup and Packet Classification 􀀀 E2E principle - Describe the end-to-end principle. Give one example in which implementing a particular functionality at a lower layer breaks this principle, and one example in which it does not. Explain. 􀀀 Fair Queueing - (a) What problem does Fair Queueing address? Describe the Fair Queuing algorithm. - (b) What is the system virtual time and what it is used for? 􀀀 Differentiated Services - Compare Assured and Premium services. How is each of them implemented at edge and core routers?
Date : 2026-01-02 Size : 185kb User : Reguse