Layer 3/4 Classification and Routing

An example application of the ClearSpeed Network Processor Platform technology is presented in this white paper. The example chosen is network layer processing with a rich set of fast path functions and a line rate of 40 Gbps. This example is realised using fully programmable processor cores with the addition of a single hardware-accelerated table lookup engine.

The solution may be integrated onto a single chip with external standard SRAM parts, and can sustain a throughput of 100 million packets per second with a headroom of 25%. The modularity and flexibility of the platform allows for scaling down to 10 Gbps or up to 160 Gbps without modification of the software nor the basic architecture.

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