Many different kinds of backplanes have been used to connect line cards and other components in network devices like routers, switches, and firewalls. The original custom-designed busses gave way to plain Ethernet busses, then to crossbars and Clos fabrics. Along the way more exotic designs, such as virtual meshes on top of toroids have been used, as well. Join Ken Duda, Russ White, and Donald Sharp as we discuss the many different kinds of backplanes and the history of their development.
Listen to this interview with Ken Duda: