Digital Equipment Corporation (DEC) developed the DECnet protocol to allow high-speed communication between DEC minicomputers across local and wide area networks.

Some of the DECnet protocols:

  • RP - Routing Protocol.
  • MOP - Maintenance Operation Protocol.
  • NSP - Network Service Protocol.
  • SCP - Session Control Protocol.
  • DAP - Data Access Protocol.
  • CTERM - Command Terminal.
  • LAT - Local Area Transport.
  • STP - Spanning Tree Protocol.
  • LAVC - Local Area VAX Cluster.

For more information, see http://www.protocols.com/pbook/decnet.htm