Leveraging optical infrastructure investments in metropolitan area networks (MANs), Internet exchange networks and campus enterprises is of paramount importance to service providers and enterprise businesses. The BlackDiamond 6800 series core switches and Alpine 3800 series Ethernet service provisioning switches do just that by integrating state-of-the-art wave division multiplexing (WDM) technology.The WDMi module provides a 10 Gbps interconnect on a single-mode .ber (Basic Encryption Rules) pair for BlackDiamond switches in Metropolitan Area Networks and Internet exchange networks.