Techroutes L2 Gigabits intelligent switch designed for carrier and MAN networks. It supports omprehensive QoS, enhanced VLAN functions (VLAN VPN, Voice VLAN, QinQ, N:1 VLAN Translation etc), Ethernet Ring Protection Protocol (G.8032), classified bandwidth control, intelligent security control, OAM(Operations, Administration and Maintenance), manageability functions and Triple‐Play services which fulfill the network requirements demanded by carrier network, MAN access. The Layer II switch offers green features like IEEE 802.3az (Energy Efficient Ethernet), Fan‐less design feature, which can dramatically ower power consumption, achieve green energy and save the cost for the carrier and MAN users..