FPGA implementation of lookup algorithms

Abstract

The pool of available IPv4 addresses is being depleted, comprising less than 10% of all IPv4 addresses. At the same time, the bit-rates at which packets are transmitted are increasing, and the IP lookup speed must be increased as well. Consequently, the IP lookup algorithms are in the research focus again because the existing solutions were designed for IPv4 addresses, and are not sufficiently scalable. In this paper, we compare FPGA implementations of the balanced parallelized frugal lookup (BPFL) algorithm, and the parallel optimized linear pipeline (POLP) lookup algorithm that efficiently use the memory, and achieve the highest speeds.