Ethernet: Distributed Packet Switching for Local…

Ethernet asks how many computers can share one inexpensive local medium without a central traffic controller. Read it to see how a passive broadcast cable, carrier sensing, collision detection, brief jamming, and adaptive random backoff turn simultaneous packet attempts into distributed coordination.

Reading focus: How a passive branching Ether broadcasts each addressed packet while destination stations decide locally whether to copy it. Why listening before transmission reduces collisions but propagation delay still permits simultaneous starts, making rapid detection and shared collision consensus necessary. How repeated collisions double the mean random retry interval, what the paper's heavy-load efficiency model actually assumes, and which reliability duties remain above the link.

Communications of the ACM 1976. Robert M. Metcalfe and David R. Boggs. 30 min read, very easy difficulty.