Organization
Given topology constructed by linking switches and network interfaces, must deliver packet from node A to node B
Link: cable with connectors on each end
- connect switches to other switches or network interfaces
Switch: N inputs N outputs (degree N)
Phit: Minimum # of bits physically moved across link in one cycle (Can pipeline on single wire)
Flit: Minimum # of bits move across link as a single unit
Packet: unit that requires routing information, some number of flits