The SS2GR52 is a fully featured Gigabit Ethernet L2 advanced or L3 Lite switch that is ideal for deployment both at the core and the network edge to provide full gigabit speeds throughout the network. With 48 10/100/1000Base-T copper ports and 4 SFP (1000Base-X) ports . Comprehensive QoS, feature rich VLAN functions (Voice VLAN, Q in Q, VLAN VPN, etc),enhanced security, classified bandwidth control, link aggregation, this switch has all of the features you could ask for, and is also easy to configure and manage through single IP management (also works with layer 3 10G switches from Amer.com) and industrial standard CLI shell and Web GUI. The SS2GR52 supports the OpenFlow protocol. It is compatible with open controllers such as Opendaylight, Floodlight, Ryu, Pox, and many more. OpenFlow is trending as a core protocol for SDN networks.