On my courses slide there is a chapter about this concept. I thought it was some sort of idea about replacing legacy and non-flexible technologies as SONET and so on in favor of Ethernet family technologies.
Am i wrong to assume that Carrier Ethernet networks are a sort of enlargement of the LAN Ethernet networks used for deploying MANs and WANs? Can it be seen as the idea of covering a wide area, providing different services (with different bandwidths and needs) to different organizations, using the Ethernet family technologies?