The Cisco Catalyst® 4000 Family Supervisor Engine II-Plus delivers non-blocking Layer 2 switching with basic
Layer 3 and Layer 4 intelligent services to power resilient, multilayer switching
solutions for converged data, voice, and video networks. It allows customers to deploy
network-wide intelligent services, such as advanced quality of service (QoS),
comprehensive security, and management with optimal control and resiliency.
Compatible with the widely deployed Cisco Catalyst 4503, 4506, 4507R, and
4006 chassis, and with existing Cisco Catalyst 4500 Series line cards, the
Supervisor Engine II-Plus helps to ensure an extended window of deployment
of the modular Cisco Catalyst 4500 Series.