TCP/IP Protocol Architecture (2) PDUs in TCP/IP Data link laye a data transfer between neighboring a Physical Layer Transmission medium Signal rate and encoding Some Protocols in TCP/IP Suite IPX/SPX Developed by xerox originally be IGNITe mm SMTr se ssMr applied in Novell Netware OS later Hosts that run Windows NT/XP/2000/9 3%5 can connect to icmPC Rsvr Novell Netware by IPX/SPX IPX/SPX is called NwLlink in ndows IPX/SPX can be routed like tCP/IP IPX/SPX VS OSI 工 PX Protocols Application IPX-Inter-networks Packet eXchange like IP SAP Presentation SPX- Serial Packet eXchange like TCI NetBios NCP-Netware core protocol Network Data link Protocol filters Such as Ethernet Physical Hierarchical design EIGRP and NLSP as routing protocols IPXSPX OSI Model7 哈工大计算机学院 李全龙 Network Application Development 1: Introduction 37 TCP/IP Protocol Architecture(2) „ Data link Layer ‰ data transfer between neighboring network elements ‰ Physical Layer „ Transmission medium „ Signal rate and encoding 哈工大计算机学院 李全龙 Network Application Development 1: Introduction 38 PDUs in TCP/IP 哈工大计算机学院 李全龙 Network Application Development 1: Introduction 39 Some Protocols in TCP/IP Suite 哈工大计算机学院 李全龙 Network Application Development 1: Introduction 40 IPX/SPX „ Developed by Xerox originally,be applied in Novell Netware OS later „ Hosts that running Windows NT/XP/2000/98/95 can connect to Novell Netware by IPX/SPX „ IPX/SPX is called NWLlink in Windows NT „ IPX/SPX can be routed like TCP/IP 哈工大计算机学院 李全龙 Network Application Development 1: Introduction 41 IPX/SPX vs OSI Physical Media+Protocols Data Link Such as Ethernet IPX Network SPX Transport NetBios Session Presentation NCP Application SAP RIP IPX/SPX OSI Model 哈工大计算机学院 李全龙 Network Application Development 1: Introduction IPX Protocols • IPX — Inter-networks Packet eXchange like IP • SPX — Serial Packet eXchange like TCP • RIP—routing updates • SAP—service advertisements • NCP — NetWare Core Protocol • NetBIOS emulation • Design options – Protocol filters – Hierarchical design – EIGRP and NLSP as routing protocols