Cisco Catalyst 4500 Series Switches enable borderless networks, providing high-performance, mobile, & secure user experiences through Layer 2-4 switching. Enabling security, mobility, application performance, video, & energy savings over your network infrastructure, the Cisco Catalyst 4500 Switch supports resiliency, virtualization, & automation, further improving the ease of network use. Cisco Catalyst 4500 Series Switches provide borderless performance, scalability, & services with reduced total cost of ownership (TCO) & superior investment protection. The Cisco Catalyst 4500 Switch delivers predictable & scalable high performance, with advanced dynamic quality of service (Qo S) capabilities & configuration flexibility for deploying borderless networks. Integrated resiliency features in both hardware & software maximize network availability, helping to ensure workforce productivity, profitability, & customer success. Its centralized, innovative, & flexible system design helps ensure smooth migration to wire-speed IPv 6 & 10 Gigabit Ethernet (GE). The forward & backward compatibility between generations of the Cisco Catalyst 4500 Series extends deployment life, providing exceptional investment protection, while reducing the (TCO). The Cisco Catalyst 4500E Series is a high-performance, next-generation extension to the Cisco Catalyst 4500 Series. The E-Series is designed for a high-performance, mobile, & secure user experience with superior backward & forward compatibility, delivering exceptional investment protection for organizations of all sizes.