High-speed policy-based packet forwarding using efficient multi-dimensional range matching
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
Packet classification using tuple space search
Proceedings of the conference on Applications, technologies, architectures, and protocols for computer communication
Space/time trade-offs in hash coding with allowable errors
Communications of the ACM
Models, algorithms, and architectures for scalable packet classification
Models, algorithms, and architectures for scalable packet classification
Fast hash table lookup using extended bloom filter: an aid to network processing
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Segmented hash: an efficient hash table implementation for high performance networking subsystems
Proceedings of the 2005 ACM symposium on Architecture for networking and communications systems
Algorithms for packet classification
IEEE Network: The Magazine of Global Internetworking
TBF: a high-efficient query mechanism in de-duplication backup system
GPC'12 Proceedings of the 7th international conference on Advances in Grid and Pervasive Computing
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Packet classification continues to be an important challenge in network processing. It requires matching each packet against a database of rules and forwarding the packet according to the highest priority matching rule. Within the packet classification hash-based algorithms, an algorithm that is gaining interest is the tuple space search algorithm that groups the rules into a set of tuple spaces according to their prefix lengths. An incoming packet can now be matched to the rules in a group by taking into consideration only those prefixes specified by the tuples. More importantly, matching of an incoming packet can now be performed in parallel over all tuples. Within these tuple spaces, a drawback of utilizing hashing is that certain rules will be mapped to the same location, also called collision. The negative effect of such collision is that it will result in multiple memory accesses and subsequently longer processing time. In this paper, we propose to use a pruned counting Bloom filter to reduce collisions in the tuple space packet classification algorithm. This approach decreases the number of collisions and memory accesses in the rule set hash table in comparison to a traditional hashing system. We propose to utilize the pruned counting Bloom filter to decrease the number of collisions. More specifically, we investigate several well-known hashing functions and determine the number of collisions and show that utilizing the pruned counting Bloom filter the number of collisions can be further reduced by at least 4% and by at most 32% for real rule sets.