Open-Source PC-Based software routers: a viable approach to high-performance packet switching

Authors:
Andrea Bianco;Jorge M. Finochietto;Giulio Galante;Marco Mellia;Fabio Neri
Affiliations:
Dipartimento di Elettronica, Politecnico di Torino, Torino, Italy;Dipartimento di Elettronica, Politecnico di Torino, Torino, Italy;Networking Lab, Istituto Superiore Mario Boella, Torino, Italy;Dipartimento di Elettronica, Politecnico di Torino, Torino, Italy;Dipartimento di Elettronica, Politecnico di Torino, Torino, Italy
Venue:
QoS-IP'05 Proceedings of the Third international conference on Quality of Service in Multiservice IP Networks
Year:
2005

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Abstract

We consider IP routers based on off-the-shelf personal computer (PC) hardware running the Linux open-source operating system. The choice of building IP routers with off-the-shelf hardware stems from the wide availability of documentation, the low cost associated with large-scale production, and the continuous evolution driven by the market. On the other hand, open-source software provides the opportunity to easily modify the router operation so as to suit every need. The main contribution of the paper is the analysis of the performance bottlenecks of PC-based open-source software routers and the evaluation of the solutions currently available to overcome them.