Network encryption today is typically handled at the application layer with SSL or at the IP layer with IPsec. Building a more secure connection at a lower layer of the network has been a headache because encryption had to be provided on a link-by-link basis.
In this video, Vitesse Semiconductor's Martin Nuss discuses Intellisec, a new technology that leverages MACsec protocol to extend security end-to-end.
http://youtu.be/mVWxyMGKD2M
