MRV's eWDM systems provide a simple, efficient, flexible and cost effective solution for deploying Gigabit Ethernet services in Campus, Metropolitan area access networks, highways, the transportation industry and Cable TV MSOs. The Ethernet WDM (eWDM) solution's building blocks are: OptiSwitch WDM pluggable module with WDM SFP LDP300 All Optics Chassis (passive) CWDM Optical Add-Drop Multiplexers (OADMs) Easy Deployment and flexible implementation: Passive Optical Solution No-power required No configuration needed Can work with standard LD family OADM/MUX modules Interfaces directly to WDM (SFP/GBIC) pluggable optics High availability and redundancy protection: OADM: O-BPSR and O-UPSR for system and fiber cut protection OptiSwitch GER module for fiber signal redundancy Protocol (RSTP, MPLS) redundancy Investment protection: