The Cisco Catalyst 3560 Series is a family of Layer 3 network switches designed for medium-sized enterprises and organizations. These switches provide advanced Layer 2 and Layer 3 capabilities, making them suitable for access and distribution layer deployments. Key features of the Cisco Catalyst 3560 Series include support for Virtual LANs (VLANs), Quality of Service (QoS) features, robust security through features like access control lists (ACLs), and comprehensive management capabilities.

One of the notable features of the Catalyst 3560 Series is its support for IP routing, enabling these switches to perform routing functions between VLANs and support dynamic routing protocols like OSPF and EIGRP. They come in various port configurations, including Fast Ethernet (10/100 Mbps) and Gigabit Ethernet (10/100/1000 Mbps) ports, offering flexibility to meet diverse network requirements.

These switches have been widely used in their time and have contributed to improving network performance and capabilities in medium-sized enterprises. However, it's important to note that my knowledge is based on information available up to September 2021, and there may have been developments or updates in Cisco's product offerings since then.