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Internetworking

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149:, but the term has been deprecated in this context, because of possible confusion with functionally different devices. By 1973-4, researchers in France, the United States, and the United Kingdom had worked out an approach to internetworking where the differences between network protocols were hidden by using a common internetwork protocol, and instead of the network being responsible for reliability, as in the ARPANET, the hosts became responsible, as demonstrated in the 384:. Despite similar appearance as a layered model, it has a much less rigorous, loosely defined architecture that concerns itself only with the aspects of the style of networking in its own historical provenance. It assumes the availability of any suitable hardware infrastructure, without discussing hardware-specific low-level interfaces, and that a host has access to this local network to which it is connected via a link layer interface. 719:
In the early 1970s Mr Pouzin created an innovative data network that linked locations in France, Italy and Britain. Its simplicity and efficiency pointed the way to a network that could connect not just dozens of machines, but millions of them. It captured the imagination of Dr Cerf and Dr Kahn, who
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The authors wish to thank a number of colleagues for helpful comments during early discussions of international network protocols, especially R. Metcalfe, R. Scantlebury, D. Walden, and H. Zimmerman; D. Davies and L. Pouzin who constructively commented on the fragmentation and accounting issues; and
317:, is required to traverse these devices. However, a single computer network may be converted into an internetwork by dividing the network into segments and logically dividing the segment traffic with routers and having an internetworking software layer that applications employ. 328:
across the network. The architecture avoids intermediate network elements maintaining any state of the network. Instead, this function is assigned to the endpoints of each communication session. To transfer data reliably, applications must utilize an appropriate
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But the ARPANET itself had now become an island, with no links to the other networks that had sprung up. By the early 1970s, researchers in France, the UK, and the U.S. began developing ways of connecting networks to each other, a process known as
626: 365:(ISO) and provides a rigorous description for layering protocol functions from the underlying hardware to the software interface concepts in user applications. Internetworking is implemented in the 886: 387:
For a period in the late 1980s and early 1990s, the network engineering community was polarized over the implementation of competing protocol suites, commonly known as the
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in the connected networks can exchange messages irrespective of their hardware-level networking technology. The resulting system of interconnected networks is called an
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From the outset of the project, we aimed not only to carry out innovative research, but also to provide network services to UK and U.S. groups that wished to cooperate.
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in the United Kingdom confirmed establishing a common host protocol would be more reliable and efficient. The ARPANET connection to UCL later evolved into
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of the networking model, i.e. at the hardware-centric layer below the level of the TCP/IP logical interfaces. Such interconnection is accomplished with
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with specifications for compatibility of addressing and routing. The term catenet was gradually displaced by the short-form of the term internetwork,
627:"The Computer History Museum, SRI International, and BBN Celebrate the 40th Anniversary of First ARPANET Transmission, Precursor to Today's Internet" 118:, started as a way to connect disparate types of networking technology, but it became widespread through the developing need to connect two or more 732: 376:, also known as the TCP/IP model, was not designed to conform to the OSI model and does not refer to it in any of the normative specifications in 892: 362: 166: 391:. It was unclear which of the OSI model and the Internet protocol suite would result in the best and most robust computer networks. 987: 956: 775: 457: 429: 231: 946: 516: 138: 321: 928: 578: 657: 357:
Two architectural models are commonly used to describe the protocols and methods used in internetworking. The
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defining format and handling of transmitted packets; components interconnecting the participating networks by
196:. The definition of an internetwork today includes the connection of other types of computer networks such as 1006: 334: 63:, a network of networks based on many underlying hardware technologies. The Internet is defined by a unified 305:. This is sometimes incorrectly termed internetworking, but the resulting system is simply a larger, single 345:(UDP), for tasks which do not require reliable delivery of data or that require real-time service, such as 220: 146: 17: 358: 749: 173:. In 1977, ARPA demonstrated a three-way internetworking experiment, which linked a mobile vehicle in 142: 508: 400: 373: 310: 342: 283: 830:
McKenzie, Alexander (2011). "INWG and the Conception of the Internet: An Eyewitness Account".
765: 197: 162: 502: 145:(UCL). In the ARPANET, the network elements used to connect individual networks were called 793:"In the Shadow of ARPANET and Internet: Louis Pouzin and the Cyclades Network in the 1970s" 377: 8: 182: 907: 977: 855: 812: 570: 247: 193: 119: 72: 983: 952: 859: 847: 804: 771: 680: 562: 512: 453: 425: 381: 314: 263: 123: 76: 598: 27:"Internetwork" redirects here. For the most notable example of an internetwork, see 839: 672: 574: 554: 325: 293:
Another type of interconnection of networks often occurs within enterprises at the
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A History of International Research Networking: The People who Made it Happen
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To build an internetwork, the following are needed: A standardized scheme to
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included aspects of its design in the protocols that now power the internet.
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S. Crocker who commented on the creation and destruction of associations.
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Coulouris, George; Dollimore, Jean; Kindberg, Tim; Blair, Gordon (2012).
238:. Pouzin was a pioneer in packet-switching technology and founder of the 843: 816: 792: 540:"Early experiences with the Arpanet and Internet in the United Kingdom" 341:. Some applications use a simpler, connection-less transport protocol, 306: 294: 154: 64: 929:"Rough Consensus and Running Code' and the Internet-OSI Standards War" 558: 476: 603: 239: 158: 150: 60: 28: 287: 282:
packets to any host on any participating network; a standardized
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with nodes in the ARPANET, and, via SATNET, to nodes at UCL. The
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packets to their destinations based on standardized addresses.
170: 361:(OSI) reference model was developed under the auspices of the 174: 733:"8.7 Ethernet and Robert Metcalfe and Xerox PARC 1971-1975" 484: 250:. Catenet was the concept of linking these networks into a 186: 185:
were based in the 1970s and 1980s, was supplemented by the
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History of the Internet: A Chronology, 1843 to the Present
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A Proposal for Interconnecting Packet Switching Networks"
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A Proposal for Interconnecting Packet Switching Networks
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The term "catenet" was introduced by L. Pouzin in 1974.
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Interconnecting different types of computer networks
59:The most notable example of internetworking is the 658:"A Protocol for Packet Network Intercommunication" 905: 110:Internetworking, a combination of the components 998: 945:Davies, Howard; Bressan, Beatrice (2010-04-26). 739: 320:The Internet Protocol is designed to provide an 504:Research Handbook on Governance of the Internet 481:"IEN 48: The Catenet Model for Internetworking" 363:International Organization for Standardization 790: 273: 192:Today the interconnecting gateways are called 944: 791:Russell, Andrew L.; Schafer, Valérie (2014). 419: 420:Peterson, Larry L.; Davie, Bruce S. (2012). 230:in October 1973 in a note circulated to the 133:network was the 1973 interconnection of the 40:is the practice of interconnecting multiple 975: 891:. Indianapolis: Cisco Press. Archived from 745: 165:(PUP) for internetworking. Research at the 141:through the computer science department at 934:. IEEE Annals of the History of Computing. 899: 443: 441: 219:communication networks interconnected via 475: 189:protocol which enabled internetworking. 94:. An earlier term for an internetwork is 829: 655: 599:"30 years of the international internet" 537: 450:Distributed Systems: Concepts and Design 832:IEEE Annals of the History of Computing 547:IEEE Annals of the History of Computing 471: 469: 438: 215:is obsolete terminolgy for a system of 14: 999: 760: 884: 878: 422:Computer Networks: a systems approach 413: 129:The first international heterogenous 976:Moschovitis, Christos J. P. (1999). 466: 352: 926: 823: 665:IEEE Transactions on Communications 234:, later published in a 1974 paper " 232:International Network Working Group 86:is a combination of the components 24: 906:Andrew L. Russell (30 July 2013). 501:M. Ziewitz & I. Brown (2013). 266:replaced earlier protocols on the 25: 1018: 619: 938: 920: 908:"OSI: The Internet That Wasn't" 866: 784: 754: 725: 695: 649: 591: 531: 13: 1: 406: 335:Transmission Control Protocol 167:National Physical Laboratory 7: 916:. Vol. 50, no. 8. 656:Cerf, V.; Kahn, R. (1974). 394: 359:Open System Interconnection 274:Interconnection of networks 246:meant what is now called a 10: 1023: 969: 885:Teare, Diane (July 1999). 770:. MIT Press. p. 125. 703:"The internet's fifth man" 203: 105: 26: 951:. John Wiley & Sons. 677:10.1109/TCOM.1974.1092259 309:, and no internetworking 213:(con)catenating networks, 143:University College London 139:British academic networks 888:Designing Cisco Networks 369:(Layer 3) of the model. 337:(TCP), which provides a 242:network, at a time when 153:network. Researchers at 100:(con)catenating networks 75:methods provided by the 65:global addressing system 44:, such that any pair of 538:Kirstein, P.T. (1999). 509:Edward Elgar Publishing 401:History of the Internet 374:Internet Protocol Suite 226:The term was coined by 797:Technology and Culture 767:Inventing the Internet 343:User Datagram Protocol 198:personal area networks 163:PARC Universal Packet 157:outlined the idea of 1007:Network architecture 378:Request for Comments 270:in the early 1980s. 183:public data networks 927:Russell, Andrew L. 844:10.1109/MAHC.2011.9 252:network of networks 181:protocol, on which 120:local area networks 709:. 13 December 2013 607:. 19 November 2003 452:. Addison-Wesley. 382:Internet standards 333:protocol, such as 248:local area network 211:, a short-form of 98:, a short-form of 989:978-1-57607-118-2 958:978-3-527-32710-2 777:978-0-262-51115-5 633:on March 29, 2019 559:10.1109/85.759368 459:978-0-13-214301-1 431:978-0-12-385059-1 424:. Elsevier, Inc. 353:Networking models 324:(not guaranteed) 315:Internet Protocol 264:Internet Protocol 124:wide area network 122:via some sort of 77:Internet Protocol 42:computer networks 16:(Redirected from 1014: 993: 963: 962: 942: 936: 935: 933: 924: 918: 917: 903: 897: 896: 882: 876: 870: 864: 863: 827: 821: 820: 788: 782: 781: 758: 752: 746:Moschovitis 1999 743: 737: 736: 729: 723: 722: 716: 714: 699: 693: 692: 662: 653: 647: 646: 644:internetworking. 640: 638: 623: 617: 616: 614: 612: 595: 589: 588: 583: 577:. Archived from 544: 535: 529: 528: 526: 525: 498: 492: 491: 473: 464: 463: 445: 436: 435: 417: 303:network switches 131:resource sharing 21: 1022: 1021: 1017: 1016: 1015: 1013: 1012: 1011: 997: 996: 990: 972: 967: 966: 959: 943: 939: 931: 925: 921: 904: 900: 883: 879: 871: 867: 828: 824: 789: 785: 778: 759: 755: 744: 740: 731: 730: 726: 712: 710: 701: 700: 696: 660: 654: 650: 636: 634: 625: 624: 620: 610: 608: 597: 596: 592: 584:on 2020-02-07. 581: 542: 536: 532: 523: 521: 519: 499: 495: 474: 467: 460: 446: 439: 432: 418: 414: 409: 397: 355: 349:or voice chat. 347:video streaming 339:reliable stream 331:transport layer 299:network bridges 276: 217:packet-switched 206: 108: 84:internetworking 52:, or simply an 38:Internetworking 35: 32: 23: 22: 15: 12: 11: 5: 1020: 1010: 1009: 995: 994: 988: 971: 968: 965: 964: 957: 937: 919: 898: 895:on 2007-02-07. 877: 865: 822: 803:(4): 893–894. 783: 776: 753: 738: 724: 694: 671:(5): 637–648. 648: 618: 590: 530: 518:978-1849805049 517: 493: 465: 458: 437: 430: 411: 410: 408: 405: 404: 403: 396: 393: 354: 351: 326:packet service 275: 272: 205: 202: 114:(between) and 107: 104: 90:(between) and 33: 9: 6: 4: 3: 2: 1019: 1008: 1005: 1004: 1002: 991: 985: 981: 980: 974: 973: 960: 954: 950: 949: 941: 930: 923: 915: 914: 913:IEEE Spectrum 909: 902: 894: 890: 889: 881: 874: 869: 861: 857: 853: 849: 845: 841: 837: 833: 826: 818: 814: 810: 806: 802: 798: 794: 787: 779: 773: 769: 768: 763: 762:Abbate, Janet 757: 751: 747: 742: 734: 728: 721: 708: 704: 698: 691: 686: 682: 678: 674: 670: 666: 659: 652: 645: 632: 628: 622: 606: 605: 600: 594: 587: 580: 576: 572: 568: 564: 560: 556: 552: 548: 541: 534: 520: 514: 511:. p. 7. 510: 506: 505: 497: 490: 486: 482: 479:(July 1978). 478: 472: 470: 461: 455: 451: 444: 442: 433: 427: 423: 416: 412: 402: 399: 398: 392: 390: 389:Protocol Wars 385: 383: 379: 375: 370: 368: 367:Network Layer 364: 360: 350: 348: 344: 340: 336: 332: 327: 323: 318: 316: 312: 308: 304: 300: 296: 291: 289: 285: 281: 271: 269: 265: 261: 257: 253: 249: 245: 241: 237: 233: 229: 224: 222: 218: 214: 210: 201: 199: 195: 190: 188: 184: 180: 176: 172: 168: 164: 160: 156: 152: 148: 144: 140: 136: 132: 127: 125: 121: 117: 113: 103: 101: 97: 93: 89: 85: 80: 78: 74: 70: 66: 62: 57: 55: 51: 47: 43: 39: 30: 19: 982:. ABC-CLIO. 978: 947: 940: 922: 911: 901: 893:the original 887: 880: 872: 868: 838:(1): 66–71. 835: 831: 825: 800: 796: 786: 766: 756: 741: 727: 718: 713:11 September 711:. Retrieved 706: 697: 688: 668: 664: 651: 642: 637:25 September 635:. Retrieved 631:the original 621: 609:. Retrieved 602: 593: 585: 579:the original 553:(1): 38–44. 550: 546: 533: 522:. Retrieved 503: 496: 488: 449: 421: 415: 386: 371: 356: 319: 292: 277: 262:), when the 259: 258:(lower-case 255: 251: 243: 235: 228:Louis Pouzin 225: 212: 208: 207: 191: 128: 115: 111: 109: 99: 95: 91: 87: 83: 81: 71:format, and 58: 53: 50:internetwork 49: 37: 36: 18:Internetwork 137:with early 748:, p.  524:2015-08-16 407:References 322:unreliable 313:, such as 307:subnetwork 295:link layer 155:Xerox PARC 116:networking 92:networking 860:206443072 852:1934-1547 809:0040-165X 707:Economist 685:1558-0857 567:1934-1547 477:Vint Cerf 82:The term 1001:Category 817:24468474 764:(2000). 604:BBC News 395:See also 311:protocol 284:protocol 256:internet 240:CYCLADES 221:gateways 161:and the 159:Ethernet 151:CYCLADES 147:gateways 61:Internet 54:internet 29:Internet 970:Sources 611:22 June 575:1558618 288:routing 280:address 268:ARPANET 244:network 209:Catenet 204:Catenet 194:routers 135:ARPANET 106:History 96:catenet 73:routing 986:  955:  858:  850:  815:  807:  774:  683:  573:  565:  515:  456:  428:  171:SATNET 69:packet 932:(PDF) 856:S2CID 813:JSTOR 661:(PDF) 582:(PDF) 571:S2CID 543:(PDF) 175:PRNET 112:inter 88:inter 46:hosts 984:ISBN 953:ISBN 848:ISSN 805:ISSN 772:ISBN 750:78-9 715:2017 681:ISSN 639:2017 613:2012 563:ISSN 513:ISBN 485:IETF 454:ISBN 426:ISBN 380:and 372:The 301:and 187:X.75 179:X.25 840:doi 673:doi 555:doi 1003:: 910:. 854:. 846:. 836:33 834:. 811:. 801:55 799:. 795:. 717:. 705:. 687:. 679:. 669:22 667:. 663:. 641:. 601:. 569:. 561:. 551:21 549:. 545:. 507:. 487:. 483:. 468:^ 440:^ 223:. 200:. 126:. 102:. 79:. 67:, 56:. 992:. 961:. 862:. 842:: 819:. 780:. 735:. 675:: 615:. 557:: 527:. 462:. 434:. 260:i 31:. 20:)

Index

Internetwork
Internet
computer networks
hosts
Internet
global addressing system
packet
routing
Internet Protocol
local area networks
wide area network
resource sharing
ARPANET
British academic networks
University College London
gateways
CYCLADES
Xerox PARC
Ethernet
PARC Universal Packet
National Physical Laboratory
SATNET
PRNET
X.25
public data networks
X.75
routers
personal area networks
packet-switched
gateways

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