Comment Re:Idiots (Score 1) 221
Microwave and fibre repeaters do the forwarding without waiting for the whole packet. They typically work bit-by-bit.
There may well be a little latency, but only a few bits at most, which at these speeds is inconsequential. There's no point in buffering when you're in the middle of a point-to-point link; that's only done when you may make routing decisions, but in a point-to-point link there's no decisions to be made.