Bit-Shuffled Trie: IP Lookup with Multi-Level Index Tables

被引：0

作者：

Pao, Derek ^{[1
]}

Lu, Ziyan ^{[1
]}

Poon, Yat Hang ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

来源：

2011 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) | 2011年

关键词：

IP lookup; packet forwarding; pipelined architecture; ADDRESS LOOKUP; ARCHITECTURE;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Simplicity is the major advantage of implementing hardware IP lookup engine using multi-level index tables. However, the memory efficiency of the conventional multi-level indexing approach is relatively low. In this paper we shall show that by restructuring the binary-trie using a method called bit-shuffling, highly efficient index tables can be built to support the IP lookup operation. The proposed method is evaluated using a real-life IPv4 routing table with 321K prefixes. The amortized memory cost of our method is less than 3 bytes per prefix.

引用

页数：5

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