张建伟

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:哈尔滨工业大学

学位:博士

所在单位:控制科学与工程学院

学科:微电子学与固体电子学

电子邮箱:jwzhang@dlut.edu.cn

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A Hybrid Scheme for Routing Lookup with Fast Updates Based on TCAMs

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论文类型:会议论文

发表时间:2016-01-01

收录刊物:CPCI-S

页面范围:1985-1991

关键字:TCAM update performance; prefix distribution; IP lookup

摘要:The exponential growth of routing tables in routers results in the exhaustion of IPv4 address. The urgent demand of high speed of routing lookup makes the Ternary CAM (TCAM), which needs only one cycle in each parallel lookup, a state-in-art hardware for Internet Protocol (IP) lookup and packet forwarding. However, the performance of TCAM is cut down due to too much update time. In this paper, we proposed a hybrid scheme for routing lookup with fast updates based on TCAMs. In our scheme, about 95% prefixes to be updated need no more than one movement. In the worst case, delete a prefix needs only 2 movements and insert a prefix needs 5 movements. The proposed scheme could fit different routing tables.