WEX

The MMU card is a plug-in module that takes advantage of the proven Cisco ONS 15454 carrier-class features to deliver the flexibility to deploy a ROADM node that is scalable in-service to support additional add/drop directions. Cisco ONS 15454 MSTP ROADM units provide each customer with access to every wavelength in all the nodes of a network, with the flexibility to decide if the wavelength has to be dropped locally or be allowed to pass through to the rest of the network (Degree-2 ROADM). This flexibility is enough for about 80 percent of the add/drop locations in a metro or metro core DWDM network, according to what customers are expecting in the foreseeable future of their networks. Other locations in the network will require, in the future, the ability to route wavelengths and services across more than two directions (Degree-N ROADM). For all these locations the Mesh/Multiring Upgrade (MMU) card provides a solution today which will support the require flexibility in the future.