Delay-Tolerant Networking: The Internet That Works When the Internet Doesn't

Episode Summary

The internet you use every day is built on a comforting illusion: a continuous, unbroken path from sender to receiver, confirmed by a rapid-fire handshake before a single byte flows. But in deep space, disaster zones, or remote wilderness — anywhere that continuous path doesn't exist — standard routing protocols like AODV and DSR simply refuse to function, dropping your data and throwing an error. Delay-tolerant networking, or DTN, was born from the collision of two research tracks: 1970s mobile ad-hoc networking experiments that evolved into 1990s wireless MANETs, and a DARPA-funded Interplanetary Internet project where Vint Cerf himself — co-architect of the terrestrial internet — realized his own invention was useless acros ...