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Efficient Searching with a TCAM-based Parallel Architecture
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並列篇名 | Efficient Searching with a TCAM-based Parallel Architecture |
作者 | Bin Zhang、Xingchun Diao、Kun Ding、Hao Yan、Donghong Qin |
英文摘要 | Ternary Content-Addressable Memory (TCAM) is a popular hardware device for fast IP address lookup. High link transmission speed of Internet backbone demands more powerful IP address lookup engine. Restricted by the memory access speed, the lookup engine for next-generation routers demands exploiting parallelism among multiple TCAM chips. How to design an efficient engine with high IP lookup speed and less update time while keeping low power consumption is a great challenge in building the next-generation routers. At present, no parallel schemes can make full use of TCAM chips’ capability. In this paper, we propose a fast lookup, efficient update and power-saving scheme which can basically make full use of TCAM chips’ capability. With N parallel TCAM chips, our proposed scheme can achieve a worst-case speedup factor of (N-1)*90% in cache-update state, and a worst-case speedup factor of N*90% in normal work state. Compared with previous works, our scheme can apparently improve IP lookup performance and update efficiency while keeps low power consumption. |
起訖頁 | 2215-2226 |
關鍵詞 | Parallel TCAM、Route lookup、Update、Power consumption |
刊名 | 網際網路技術學刊 |
期數 | 201812 (19:7期) |
出版單位 | 台灣學術網路管理委員會 |
DOI |
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