to the coprocessor through datapaths available in inexpensive, commodity server platforms. Endto-end data throughput of 667 MB/s is achieved. 1.

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This paper presents the design and implementation of an incrementally scalable architecture for middleboxes based on commodity servers and operating systems. xOMB, the eXtensible Open MiddleBox, employs general programmable network processing pipelines, with user-defined C++ modules responsible

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