This Series with Center Flex technology provides scalable nonblocking Layer 2-4 switching with Secure Flexible Non-Stop communications enabling business resilience for enterprises small and medium-sized businesses and Metro Ethernet customers deploying business-critical applications. Center Flex technology is the technology enabled by the Supervisor 6-E centralized ASICs which deliver the highest centralized performance and configuration flexibility in the industry. Center Flex technology enables granular optimization of real-time voice video and data communication maximizing performance and enhancing end user experience. The new "E-Series" with Center Flex technology is designed with unprecedented backward and forward compatibility delivering exceptional investment protection and deployment flexibility to meet the evolving needs of organizations of all sizes. It includes two series of Catalyst chassis - the E-Series and Classic Series chassis. Integrated resiliency in both hardware and software minimizes network downtime helping to ensure workforce productivity profitability and customer success. This Series extends Control to the network edge with intelligent network services including sophisticated quality of service (QoS) predictable performance advanced security comprehensive management and integrated resiliency. Scalability of these intelligent network services is made possible with dedicated specialized resources known as ternary content addressable memory. Ample TCAM resources enable high feature capacity which provides wire-speed routing/switching performance independent of provisioning of services such as QoS and security. With unprecedented forward and backward compatibility spanning multiple generations the Catalyst 4500 Series reduces the cost of ownership by minimizing recurring operational expenses improving return on investment.