tailieunhanh - Internetworking with TCP/IP- P74

Internetworking with TCP/IP- P74: TCP/IP has accommodated change well. The basic technology has survived nearly two decades of exponential growth and the associated increases in traffic. The protocols have worked over new high-speed network technologies, and the design has handled applications that could not be imagined in the original design. Of course, the entire protocol suite has not remained static. New protocols have been deployed, and new techniques have been developed to adapt existing protocols to new network technologies | TCP IP Internet Terms In Alphabetical Order 689 frame Literally a packet as it is transmitted across a serial line. The term derives from character oriented protocols that added special start-of-frame and end-of-frame characters when transmitting packets. We use the term throughout this book to refer to the objects that physical networks transmit. Frame Relay The name of a connection-oriented network technology that is offered by telephone companies. FTP File Transfer Protocol The TCP IP standard high-level protocol for transferring files from one machine to another. FT P uses TCP. full duplex Characteristic of a technology that allows simultaneous transfer of data in two directions. TCP provides full duplex connections. FYI For Your Information A subset of the RFCs that contain tutorials or general information about topics related to TCP IP or the connected Internet. gated GATEway Daemon A program run on a router that uses an IGP to collect routing information from within one autonomous system and EGP to advertise the information to another autonomous system. gateway Any mechanism that connects two or more heterogeneous systems and translates among them. Originally researchers used the term IP gateway for dedicated computers that route IP datagrams vendors have adopted the term IP router. gateway requirements See router requirements. Gbps Giga Bits Per Second A measure of the rate of data transmission equal to 230 bits per second. Also see Kbps Mbps and baud. GGP Gateway to Gateway Protocol The protocol originally used by core gateways to exchange routing information. GGP is now obsolete. gopher An early menu-driven information service used in the Internet. GOSIP Government Open Systems Interconnection Profile A . government procurement document that specified agencies may use OSI protocols in new networks after August 1991. Although GOSIP was originally thought to eliminate the use of TCP IP on government internets clarifications have specified that government