The Cisco Catalyst 4500E Supervisor Engine 7L-E (Figure 1) is an enterprise-class borderless campus access & price/performance aggregation supervisor engine designed to provide 520 Gbps per system with E-Series chassis. The Cisco Catalyst 4500E Supervisor Engine 7L-E builds on the success of its predecessor, the Cisco Catalyst 4500E Supervisor Engine 6L-E, & provides unprecedented performance with borderless services such as Flexible Net Flow (FNF) & hosted third-party applications. The Supervisor Engine 7L-E offers key innovations including • Up to 7 to 10 years of investment protection through backward & forward compatibility • 520-Gbps system performance with 48 Gbps per slot to every line-card slot • Future-proof investment with dual 10 Gigabit Ethernet uplinks (Small Form-Factor Pluggable Plus [SFP+] optics) or four Gigabit Ethernet uplinks (SFP optics) • Cisco Universal Power over Ethernet (UPOE) for unprecedented convergence to IP network infrastructure • Application visibility through FNF • Cisco IOS XE Software, which provides the ability to host third-party applications • Energy efficiency with support for 802.3az Energy-Efficient Ethernet (EEE)-capable line cards • Industry-leading resiliency through In-Service Software Upgrade (ISSU) • First & only modular switch with 8 bidirectional line-rate Switched Port Analyzer/ Remote SPAN (SPAN/RSPAN) sessions