Appletalk

summary

Appletalk (AT) is made up of A p p l e the company created A group of network protocol name, which is used for A series of p l e p personal computers. Protocol stack of various protocol used to provide telecommunication services, such as file service, print, E-mail and other network services. Table 8-1 list constitute the specific agreement mig-at agreement suite. It also shows the agreement the relationship between and O S I model of contact. C I s C o routers and switches support A p p l e Ta l k protocol stack. By using C I s C o network devices, A p p l e Ta l k network can make all A p p l e computer users to enjoy the global file and print and application services.

Apple computer network system structure and network protocol. Have client network and operation Macintosh Windows 2000 Server or Windows NT Server computer Macintosh function of the service as a AppleTalk network.

AppleTalk is by Apple company launched a multilayer agreement, support network routing, transaction service, data flow service and domain name service, and through the Apple hardware interface fully realize LocalTalk Apple between system files and print Shared services. Through the Ethernet bridge LocalTalk or use Apple mechanisms provide Ethernet expanded plate (add - in the way such as boards) can achieve other network media (such as Ethernet) and the connection between the AppleTalk. In addition AppleTalk agreement contain lots of third party (makkah - party) application.

A AppleTalk network can support up to 32 computer equipment, and data transfer rate can reach 230.4 Kbps. The equipment can be had between are 1000 feet. In the physical, AppleTalk is one kind has the bus topological structure of the network, each connection between modules by interconnecting cables interconnections.

Link access protocol

Regarding the network bus all system, LocalTalk Link Access Protocol (LLAP: LocalTalk Link Access Protocol) is common, and the agreement is responsible for handling individual AppleTalk network connection between various equipment of nodes in a node of the data transfer service. Additionally this agreement for Ethernet, token ring and the optical fiber distributed data interface (FDDI) defines the data link layer interface.

Data submitted to transfer protocol

Data submitted to transfer Protocol (DDP Datagram Delivery Protocol), is a way to realize the network layer AppleTalk agreement. It is a connectionless data submitted to agreement, support for best (best - the delivery service). DDP similar to TCP/IP protocol group of the IP protocol.

Some of the transport layer protocol is mainly used for bottom service add different types of function. Routing Table Maintenance agreement (RTMP: ccna Protocol) is located at rei Table is support Bridges and the Internet router Internet dynamic discovery reach different AppleTalk network path. AppleTalk affairs Protocol (ATP: AppleTalk Transaction Protocol) is mainly responsible for the control request and response requestor) the end (responder) socket between affairs.

Name binding agreement

Name Binding agreement (NBP: Name Binding Protocol) support string Name and corresponding client Internet address conversion between service. AppleTalk response Protocol (AEP: AppleTalk echors AppleTalk Protocol) support network in a node to other nodes to send data and receives a copy of the response data is returned. AppleTalk Data flow Protocol (ADSP: AppleTalk Data Stream AppleTalk network Protocol) support any two socket (sockets) in full-duplex (full duplex) mode of word throttling Data transmission. Regional Information Protocol (ZIP: Protocol) is used to maintain Zone Information and discover the network number within the scope of the Internet network mapping.

Conversation agreement

Session layer, AppleTalk Session Protocol (ASP: AppleTalk Protocol) and Session AppleTalk affairs Protocol (ATP: AppleTalk Transaction Protocol) combining provide establish, maintain and closed Session function.

File agreement

AppleTalk file agreement (AFP AppleTalk: submit) is a type of application layer Protocol or representation layer protocols, mainly used to control access to remote file system. This agreement is the typical application AppleShare, it mainly for various computer users to provide file sharing service.