Switches D-Link DGS-3700 can be successfully applied telecommunications providers in the construction of networks Metro Ethernet. In the design is based on the previous experience of the successful implementation of Ethernet networks in the telecommunications sector. The series supports a wide range of technologies, including Ethernet, OAM (Operations, Administration and Maintenance), Double VLAN (Q-in-Q), service quality of service (QoS) technology and Triple play, providers need Carrier Ethernet