Unified nvTCAM and sTCAM Architecture for Improving Packet Matching Performance
Software-Defined Networking (SDN) allows control applications to install fine-grained forwarding policies in the underlying switches. Ternary Content Addressable Memory (TCAM) enables fast lookups in hardware switches with flexible wildcard rule patterns. However, the performance of packet processing is severely constrained by the capacity of TCAM, aggravating the processing burden and latency issues. In this paper, we propose a hybrid TCAM architecture which consists of NVM-based TCAM (nvTCAM) and SRAM-based TCAM (sTCAM), utilizing nvTCAM to cache the most popular rules to improve cache-hit-ratio while relying on a very small-size sTCAM to handle cache-miss traffic to effectively decrease update latency. Considering the special rule dependency, we present a Rule Migration Replacement Algorithm to effectively make full utilization of both nvTCAM and sTCAM to obtain better performance. Experimental results show our proposed architecture outperforms current TCAM architectures.
Thu 22 Jun
10:30 - 12:10: LCTES 2017 - Session 3: Non-Volatile Memory/Processor and RTOS at Vertex WS208 Chair(s): Hanjun KimPOSTECH | ||||||||||||||||||||||||||||||||||||||||||
| 10:30 - 10:55 Talk | Yi WangShenzhen University, Mingxu ZhangShenzhen University, Jing YangHarbin Institute of Technology | |||||||||||||||||||||||||||||||||||||||||
| 10:55 - 11:20 Talk | Xianzhong DingShandong University, Zhiyong ZhangShandong University, Zhiping JiaShandong University, Lei JuShandong University, Mengying ZhaoShandong University, Huawei HuangThe University of Aizu | |||||||||||||||||||||||||||||||||||||||||
| 11:20 - 11:45 Talk | Chen Pan, Mimi XieOklahoma State University, Yongpan LiuTsinghua University, Yanzhi WangSyracuse University, Jason XueCity University of Hong Kong, China, Yiran ChenUniversity of Pittsburgh, Jingtong HuOklahoma State University | |||||||||||||||||||||||||||||||||||||||||
| 11:45 - 12:10 Talk | ||||||||||||||||||||||||||||||||||||||||||