The D-Link Gigabit layer 3 stackable managed switches are designed to address the needs of small to medium sized business networks by incorporating L2 and L3 features that enable the switches to be deployed in a variety of environments and topologies. This switches allows multiple switches to be connected to form a single physical or virtual stack. Loopback detection
Physical stack of up to 9 units
Redundant power supply support
Ethernet ring protection switching