The new E-Series with CenterFlex 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. The Cisco Catalyst 4500 Series includes two series of Catalyst chassis: the E-Series and Classic Series chassis. Catalyst 4500 E-Series chassis are extremely flexible and will support both 6 Gbps and 24Gbps per line card slot. Integrated resiliency in both hardware and software minimizes network downtime helping to ensure workforce productivity profitability and customer success. The Cisco Catalyst 4500 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 (TCAM). Ample TCAM resources (up to 384000 entries) enable high feature capacity which provides wire-speed routing/switching performance independent of provisioning of services such as QoS and security. This helps ensure scalability for todays network requirements with ample room for future growth. 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 (ROI).