Description

As their primary transport protocol, many PC networking companies, including Banyan, Novell, and Ungermane-Bass Networks, either used or use XNS. It was decided that XNS would be used in a wide range of office applications, processors, and communication media. UB, which is now a part of Tandem Computers, developed its Net/One XNS routing protocol using XNS Within the framework of the Xerox Network Systems Architecture, Xerox developed the computer networking protocol suite known as Xerox Network Systems (XNS). It offered higher-level functions like a reliable stream and remote procedure calls in addition to general purpose network communications, internetwork routing and packet delivery, and other features. During the 1980s, XNS had a significant impact on the designs of local area networking, predating and influencing the Open Systems Interconnection (OSI) networking model. The Xerox Systems Development Department, which was tasked with bringing Xerox PARC's research to market, developed XNS in the early 1980s.The earlier and equally influential PARC Universal Packet (PUP) suite from the late 1970s served as the foundation for XNS. The Pup suite's protocols were slightly modified versions of some of the ones in the XNS suite. The addition of the concept of a network number in XNS made it possible to build larger networks out of smaller ones by using routers to direct the flow of information between them. In 1977 the XNS protocol suite specifications were made available to the general public. Because of this, XNS became the standard for local area networking, and virtually every networking system in use copied it to varying degrees throughout the 1990s. It also served as the foundation for Novell NetWare and Banyan VINES, with some modifications. The Apple Net system was based on XNS but it was never made commercially available some of XNS's answers for normal issues were utilized in AppleOne’s substitution.

Web Datagram Convention (WDC). IDP uses Ethernet's 48-bit address as the basis for its own network addressing typically using the machine's MAC address as the primary unique identifier. IDP is a close descendant of Pup's inter network protocol and roughly corresponds to the Internet Protocol (IP) layer in the Internet protocol suite. Another 48-bit address section, provided by the networking equipment, is added to this The internetwork's network number is identified by 32 bits provided by routers, and a socket number is defined by 16 bits for service selection within a single host. In addition, a special value indicating "this network" is included in the network number portion of the address for use by hosts that do not yet know their network number. In contrast to TCP/IP, socket numbers.

John Gresham  
journal coordinator
international journal of innovative research in computer and communication engineering