Ethernet over WDM

Ethernet over Coarse/Dense Wave Division Multiplexing (WDM) is particularly effective in high-bandwidth, extreme-performance scenarios, such as information storage solutions or data center interconnection. Ethernet over WDM's level of reliability depends on its implementation in the network. For protected circuits, reliability is very high with no loss of traffic in a failure scenario as traffic is split between "working" and "protection" wavelengths that are diversely routed in a ring. In the case of unprotected circuits, the signal is lost in cases of a fiber cut and will rely exclusively on any client-device protection, such as SONET, SDH or Multi-Link Trunking.