The NSFNET followed the CSNET, connecting the campuses of several colleges and supercomputing systems with a 56K core in 1986. The NSFNET was the first large-scale implementation of Internet technologies in a complex environment of many independently operated networks, and forced the Internet community to iron out technical issues arising from the rapidly increasing number of computers and address many practical details of operations, management and conformance. The NSF eventually became the "seed" of the commercialized core of the Internet, playing an outsized role in the current design of routing, transport, and other Internet technologies.