Power and Time Efficient IP Lookup Table Design Using Partitioned TCAMs

• 作者: Gyungho Lee Yongsuk Lee Youngjung Ahn
• 来源期刊: 电路与系统(英文)
• 学科: 工学
• 关键词: IP LOOKUP DEVICE ROUTING TABLE TCAMs INSERTION
• 年，卷（期）: 2013,（3）
• 页码范围: 299-303
• 页数: 5页
• 分类号: TP39

摘要

This paper proposes a power and time efficient scheme for designing IP lookup tables. The proposed scheme uses partitioned Ternary Content Addressable Memories (TCAMs) that store IP lookup tables. The proposed scheme enables O(1) time penalty for updating an IP lookup table. The partitioned TCAMs allow an update done by a simple insertion without the need for routing table sorting. The organization of the routing table of the proposed scheme is based on a partition with respect to the output port for routing with a smaller priority encoder. The proposed scheme still preserves a similar storage requirement and clock rate to those of existing designs. Furthermore, this scheme reduces power consumption due to using a partitioned routing table.