In VINI veritas: realistic and controlled network experimentation
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
ALS '01 Proceedings of the 5th annual Linux Showcase & Conference - Volume 5
Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems 2007
Virtualizing the data plane through source code merging
Proceedings of the ACM workshop on Programmable routers for extensible services of tomorrow
Towards high performance virtual routers on commodity hardware
CoNEXT '08 Proceedings of the 2008 ACM CoNEXT Conference
Trellis: a platform for building flexible, fast virtual networks on commodity hardware
CoNEXT '08 Proceedings of the 2008 ACM CoNEXT Conference
Analysis and Experimental Evaluation of Data Plane Virtualization with Xen
ICNS '09 Proceedings of the 2009 Fifth International Conference on Networking and Services
PdP: parallelizing data plane in virtual network substrate
Proceedings of the 1st ACM workshop on Virtualized infrastructure systems and architectures
Crossbow: from hardware virtualized NICs to virtualized networks
Proceedings of the 1st ACM workshop on Virtualized infrastructure systems and architectures
Open-Source PC-Based software routers: a viable approach to high-performance packet switching
QoS-IP'05 Proceedings of the Third international conference on Quality of Service in Multiservice IP Networks
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A major challenge in network virtualization is to virtualize the components constituting the network, in particular the routers. In the work presented here, we focus on how to use open source Linux software in combination with commodity hardware to build open virtual routers. A general approach in open router virtualization is to run multiple virtual instances in parallel on the same PC hardware. This means that virtual components are combined in the router's data plane, which can result in performance penalty. In this paper, we investigate the impact of the design of virtual network devices on router performance in Linux namespace environment. We identify performance bottlenecks along the packet data path. We suggest design changes to improve performance. In particular, we investigate modifications of the "macvlan" device, and analyze the performance improvements in terms of packet forwarding. We also investigate how the number of virtual routers and virtual devices within a physical machine influence performance.