First Generation Switches CPU output buffer LC-1 LC-2 LC-3 Input buffer Computer with multiple line cards CPU polls the line cards CPU processes the packets Simple, but performance is limited by processor speeds and bus speeds Examples: Ethernet bridges and low end routersFirst Generation Switches CPU LC-1 LC-2 LC-3 output buffer Input buffer • Computer with multiple line cards – CPU polls the line cards – CPU processes the packets • Simple, but performance is limited by processor speeds and bus speeds • Examples: Ethernet bridges and low end routers Eytan Modiano Slide 3