The Cisco Catalyst 4500 Series Supervisor Engine II-Plus meets the needs of value-conscious customers seeking a flexible and scalable LAN solution. Optimized for end-user connectivity for medium-sized enterprises, small enterprises, or branch offices, this supervisor engine provides the resiliency and control for converged data, voice, and video networks.The Cisco Catalyst 4500 Series Supervisor Engine II-Plus delivers nonblocking Layer 2, 3, and 4 intelligent services to power-resilient, multilayer-switching solutions for converged data, voice, and video networks. It allows customers to deploy networkwide intelligent services, such as advanced Quality of Service (QoS), comprehensive security, and management with optimal control and resiliency.