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What Is Cisco Express Forwarding (CEF)

Cisco Express Forwarding (CEF) is a packet-switching technique used within Cisco routers. The main purpose of CEF is to optimize the forwarding of packets and increase the packet switching speed. HISTORY Prior to CEF there were 2 methods for packet-switching – Process- Switching and Fast-Switching. PROCESS-SWITCHING The first method, process-switching is the oldest and slowest. In short the Read More