 The more widespread was a set of computer communication packet-based protocols intended to connect the then-recently developed and very popular (within MIT) Lisp machines; the second was one of the earliest local area network (LAN) hardware implementations.The Chaosnet protocol originally used an implementation over CATV coaxial cable modeled on the early Xerox PARC Ethernet, the early ARPANET, and Transmission Control Protocol (TCP).It was a contention-based system intended to work over a range, that included a pseudo-slotted feature intended to reduce collisions, which worked by passing a virtual token of permission from host to host; successful packet transmissions updated each host's knowledge of which host had the token at that time.