Because 10GE is becoming an increasingly popular Ethernet technology, existing networks are increasingly demanding 10GE be introduced. As a result of the high performance of 10GE networks, 10GE is increasingly being deployed in LAN, MAN and WAN networks, as an end-to-end connection, in the foundation of these networks. In LAN networks, 10GE is deployed in the core layer, and the market trend is now pushing 10GE to be deployed more widely in MAN networks.