Data Communications Networking Devices - 4th Ed.pdf

850 __________________________________________________________________________ INDEXFrame Relay Access Device FRAD)194±5, 200, 539, 692±7buffering 696±7comparison to routers 693Data Link Switching DLSw) 695fragmentation 696hardware overview 692prioritization 696protocol support 694transmission of voice over 696voice digitization 697Frame status 342±3Frequency converter 496Frequency division multiplexingFDM) 173±4, 627±33, 708current status 633ITU FDM recommendations174±5utilization 632±3Frequency modulation FM) 364±5Frequency shift keying FSK) 278Front-end processors 697±706, 842Front-end substitution 639Full-duplex transmission 23±5Functional address indicator 340Gateways 581±983278/9 coaxial connection 589±90control unit connectivity 582±4Ethernet connectivity 584±5IBM 3172 Interconnect Controller590±1mainframe access 582±98overview 581±2SDLC 585software considerations 591±2TIC connection 588±9TN3270 operations 592±3X.25 connectivity 587Generating polynomials 55Generic Flow Control GFC) 259±60Geometric code 53, 54Gibabit Ethernet 319±20Grade of service 820Graded index ®bers 769Ground signals 96Group address 322Half-duplex transmission 22±3Hamming code 57±8Hayes command set 432±4Hayes compatibility 432Hayes Synchronous Interface HSI)466HDLC 522HDSL 500±1Header Error Check HEC) 262Header hub 308Header length 215`HELLO' BPDU 555±6High-Bit-Rate Digital SubscriberLine HDSL) 490±1High-density bipolar 3-zeromaximum HDB3) 529High-level data link control HDLC)144±51, 643control ®eld formats 146±7link structure 145±6operational modes 149±51High-Performance Parallel InterfaceHIPPI) 76, 105±6High-speed digital signal processorDSP) 663High-Speed Serial Interface HSSI)76, 100applications 105loopback circuits 103±4pin assignments 104rationale for development 100±1signal de®nitions 101±4HIPPI, transmission distance 105±6Hops 676Horizontal cabling 285Host restrictions 219Hot-start con®guration 751±2HS indicator 424Hub-bypass multiplexing 638±9Hubs 308, 310±11Huffman coding 458±9, 760±1Hybrid coding 663HyperText Transport ProtocolHTTP) 202IBM 3270 Information DisplaySystem 717IBM 3725 communication controller700IBM 3745 communication controller702±4IBM 3746 communication controller705±6IBM cabling systemcable performance characteristics283types 1 to 9 281±3Identi®cation ®eld 217IEEE 802.3 300IEEE 802.3 frame composition 320±6IEEE 802.3 networks 303±20, 304names 303IEEE 802.14 proposal 497±9IEEE 802 standards 296±300I-FRAD 693Illicit access 782±4Implementation Agreement IA), forVoice over Frame Relay VoFR)697Information ®eld 342Information ¯ow 123±4Institute of Electrical and ElectronicEngineers IEEE) 55, 62Integrated Services Digital NetworkISDN) 151±65additional channels 157architecture 152±3basic access 153±5concept 152D channel 155±7future 164±5interfaces 163±4network characteristics 158network interfaces 159±64primary access 157terminal equipment 159±64types of service 153±7Intelligent multiplexers 642±51Intelligent operations 87Intelligent TDMs ITDM) 648±50Interchange circuit comparison 81Interconnect Controller 590±1Interexchange Carrier 14, 524Interface board 302Intermediate hubs 308International Organization forStandardization ISO) 59, 63, 64International standards organizations63±4International TelecommunicationsUnion ITU) 24, 25, 63International TelecommunicationsUnion ITU) StandardizationsSector ITU-T) 61International transmission 56±7Internet 201±35standards 69±70Internet Activities Board IAB) 69Internet Control Message ProtocolICMP) 208Internet Engineering Steering GroupIESG) 69Internet Engineering Task ForceIETF) 69Internet protocol IP)addressing 218±19header 214±18network support overview 567±9Internet telephony 663Intra-MAU cabling distances 330±2Inverse multiplexers 679±86applications 680±1bandwidth-on-demand 685±6contingency operations 682±3economics of use 683±4extended subchannel support 684operation 679±80Inverse multiplexing 640IPv4 226±9, 234, 235migration issues 233±5IPv5 227IPv6 226±35addressing 229±33evolution 226±7extension headers 228migration issues 233±5overview 227±9IPX network 571ITU CRC 55Jacks 111±17Kermit 134±6KiloStream network 516±18Kruskal's algorithm 553±4LAN Emulation LANE) 270LAN Emulation Services 616±17LAN internetworking devices539±623