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Memory efficiency with compact data structures for Internet Protocol (IP) lookup has recently regained much interest in the research community. In this paper, we revisit the classic trie-based approach for solving the longest prefix matching (LPM) problem used in IP lookup. In particular, we target our solutions for a class of large and sparsely-distributed routing tables, such as those potentially...
Internet Protocol (IP) lookup in routers can be implemented by some form of tree traversal. Pipelining can dramatically improve the search throughput. However, it results in unbalanced memory allocation over the pipeline stages. This has been identified as a major challenge for pipelined solutions. In this paper, an IP lookup rate of 325 MLPS (millions lookups per second) is achieved using a novel...
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