This document describes tools useful in relaying a data stream from a data device to a network tunnel, such as by enabling virtual switching using a provisional identifier to conceal a user identifier. These tools, for example, may use an inexpensive switch module to create virtual switch instances....http://www.google.com/patents/US7653056?utm_source=gb-gplus-sharePatent US7653056 - Virtual switching using a provisional identifier to conceal a user identifier
Virtual switching using a provisional identifier to conceal a user identifier
