A system has a switch that allows virtual private networks to be created dynamically. The system includes at least one network. The system also includes a computer having an address. The system also includes a plurality of ports for coupling to the computer. The system also includes a switch that assigns...http://www.google.com.hk/patents/US8194685?utm_source=gb-gplus-share專利 US8194685 - Method and system for managing multiple networks over a set of ports
