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DURHAM, N.H.--(BUSINESS WIRE)--The University of New Hampshire InterOperability Laboratory (UNH-IOL), an independent provider of broad-based testing and standards conformance services for the networking industry, announced today that during November 26 - December 1, 2012, multiple Layer 2 switch companies met at the University of New Hampshire InterOperability Laboratory (UNH-IOL) to perform the first interoperability testing of the control plane of TRansparent Interconnect of Lots of Links (TRILL) since the IETF standardized the protocol. TRILL solves current Layer 2 Spanning Tree limitations by allowing a fairly large Layer 2 cloud to be created such that nodes can move within the cloud without changing their IP addresses, while using Layer 3 routing techniques, including shortest paths and multi-pathing.