NetWare and AppleTalk protocols

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Unit 7::NetWare and Apple Talk Protocols AppleTalk Session Layer Protocols Within the session layer, AppleTalk has four protocols. • AppleTalk Session Protocol (ASP)—ASP is responsible for opening, maintaining, and closing sessions between AppleTalk clients and servers. • Printer Access Protocol (PAP)—PAP allows client nodes to establish a connection with a print server. PAP uses NBP to discover the network address of a particular server. Since PAP can support multiple simultaneous connections with client nodes, a printer server can process several jobs at once. • AppleTalk Data-Stream Protocol (ADSP)—AppleTalk is capable of providing full-duplex transmissions, communication in both directions between the sender and the receiver, with the Data-Stream Protocol. ADSP guarantees packets are sequenced correctly and not duplicated. • Zone Information Protocol (ZIP)—Just as the NBP maps names to addresses, ZIP maps network numbers to one or more zone names. ZIP creates and maintains a zone information table (ZIT) on AppleTalk routers. Zone Information Table (ZIT) Network Number Zones 100 Administration 101-102 Science and Math Departments 103 Language Arts 104 Social Sciences 326 ST0025804A Routing
Lesson 7-1:NetWare and Apple Talk Protocols Check Your Understanding ♦ Summarize AppleTalk Address Resolution Protocol. ♦ Diagram an AppleTalk Network Zone with four networks and at least two routers. Label all the entities of the networks and the zone. Make an RTMP routing table for one of the routers. AppleTalk Presentation and Application Layer Protocols There are two protocols that rest either in the presentation layer or the application layer of the OSI model. • The AppleTalk Filing Protocol (AFP)—This protocol is located in the presentation layer. AFP allows nodes to share files across the network. • AppleShare—AppleShare is Apple’s network server software that allows any Macintosh to become a server for a network. It operates in the application layer of the OSI model and works over either TCP/IP or AppleTalk. It allows users to access information via an AppleTalk network, an intranet, or the Internet. NetWare Introduction NetWare was created by Novell in the early 1980’s. It was originally derived from an existing set of protocols created at Xerox’s Palo Alto Research Center in the 1970’s called XNS. By the early 1990’s it was in use by over 60% of local area networks. Despite its popularity it did not support the TCP/IP protocol suite. In response to this need, Novell added TCP/IP support to their NetWare version 4. NetWare Components NetWare is based on a client-server architecture. Clients are the workstations of a network. Nodes refer to any network device, such as a router or a workstation. Using various NetWare protocols, clients are able to request services from servers, for example, file sharing and printer availability. ST0025804A 327
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NetWare and AppleTalk protocols

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