Leveraging SDN to provide Layer-2 VPNs as a Service on a MPLS-free core

Today's typical networking equipment relies heavily on hardware-accelerated features and requires vendor-supplied closed-source software to operate. This vertically-integrated architecture imposes restrictions on the type of services that an operator can deploy as well as on their underlying mechanisms. This is illustrated in the case of Layer-2 VPNs in the Swiss NREN, where the only available choice is Ethernet-over-MPLS. It is argued how this negatively impacts the design and operation of the network and how this limitation could be overcome by an approach based on the SDN paradigm. The proposed solution provides a VPN as a service on top of a plain IP backbone within a device built from commodity hardware.



  • Alexander Gall

Part of session

SDN virtual networks

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