RouteBricks: exploiting parallelism to scale software routers

TLDR: This work proposes a software router architecture that parallelizes router functionality both across multiple servers and across multiple cores within a single server, and demonstrates a 35Gbps parallel router prototype.

Abstract: We revisit the problem of scaling software routers, motivated by recent advances in server technology that enable high-speed parallel processing--a feature router workloads appear ideally suited to exploit. We propose a software router architecture that parallelizes router functionality both across multiple servers and across multiple cores within a single server. By carefully exploiting parallelism at every opportunity, we demonstrate a 35Gbps parallel router prototype; this router capacity can be linearly scaled through the use of additional servers. Our prototype router is fully programmable using the familiar Click/Linux environment and is built entirely from off-the-shelf, general-purpose server hardware.