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Alternating bit protocol

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102:. The service it delivers is to transfer in a reliable manner, if possible, large files (sequence of data of arbitrary length) from a sender to a receiver. Unlike ABP, BRP deals with sequence numbers of datum in the file and interrupts transfer after fixed number of retransmissions for a datum. 83:
This means that A may still receive ACK0 when it is already transmitting messages with sequence number one. (And vice versa.) It treats such messages as negative-acknowledge codes (NAKs). The simplest behaviour is to ignore them all and continue transmitting.
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from A to B is initialized and that there are no messages in transit. Each message from A to B contains a data part and a one-bit sequence number, i.e., a value that is 0 or 1. B has two acknowledge codes that it can send to A: ACK0 and ACK1.
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When B receives a message that is not corrupted and has sequence number 0, it starts sending ACK0 and keeps doing so until it receives a valid message with number 1. Then it starts sending ACK1, etc.
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When A sends a message, it resends it continuously, with the same sequence number, until it receives an acknowledgment from B that contains the same sequence number. When that happens, A
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The protocol may be initialized by sending bogus messages and acks with sequence number 1. The first message with sequence number 0 is a real message.
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where a simple timer restricts the order of messages to ensure receivers send messages in turn while using a window of 1 bit.
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layer 2) that retransmits lost or corrupted messages using FIFO semantics. It can be seen as a special case of a
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introduced the concept of an alternating bit protocol in 1968 for the
77:(flips) the sequence number and starts transmitting the next message. 261:"Data Communications at the National Physical Laboratory (1965-1975)" 39: 74: 122: 99: 98:(BRP) is a variant of the alternating bit protocol introduced by 54: 18:
Type of data link layer protocol about transmission fidelity
242:"TreX's Examples -- Bounded Retransmission Protocol" 346:BrĂĽgger, Niels; Goggin, Gerard (October 25, 2022). 200:"Packet Switching at Philips Research Laboratories" 299: 197: 90: 371: 345: 258: 349:Oral Histories of the Internet and the Web 372: 297: 175:Introduction to distributed algorithms 322:"ARPANET is now 50 years old | Inria" 302:Computer networks and their protocols 198:Burnett, D.J.; Sethi, H.R. (1977). 172: 13: 265:Annals of the History of Computing 14: 391: 252: 96:Bounded Retransmission Protocol 91:Bounded Retransmission Protocol 339: 314: 291: 259:Cambell-Kelly, Martin (1987). 234: 191: 166: 149:Negative-acknowledge character 1: 298:Davies, Donald Watts (1979). 159: 216:10.1016/0376-5075(77)90010-1 127:European Informatics Network 115:National Physical Laboratory 7: 132: 10: 396: 105: 177:. Cambridge. p. 85. 121:. An ABP was used by the 49: 352:. Taylor & Francis. 24:Alternating bit protocol 277:10.1109/MAHC.1987.10023 44:sliding window protocol 139:Acknowledge character 173:Tel, Gerard (2000). 222:on October 20, 2013 65:B. Assume that the 144:Information theory 380:Network protocols 359:978-1-000-79781-7 204:Computer Networks 154:Stop-and-wait ARQ 34:operating at the 387: 364: 363: 343: 337: 336: 334: 332: 318: 312: 311: 305: 295: 289: 288: 271:(3/4): 221–247. 256: 250: 249: 238: 232: 231: 229: 227: 218:. Archived from 195: 189: 188: 170: 32:network protocol 395: 394: 390: 389: 388: 386: 385: 384: 370: 369: 368: 367: 360: 344: 340: 330: 328: 320: 319: 315: 296: 292: 257: 253: 240: 239: 235: 225: 223: 196: 192: 185: 171: 167: 162: 135: 108: 93: 52: 36:data link layer 19: 12: 11: 5: 393: 383: 382: 366: 365: 358: 338: 313: 290: 251: 233: 210:(6): 341–348. 190: 183: 164: 163: 161: 158: 157: 156: 151: 146: 141: 134: 131: 111:Donald Davies' 107: 104: 92: 89: 57:are sent from 51: 48: 30:) is a simple 17: 9: 6: 4: 3: 2: 392: 381: 378: 377: 375: 361: 355: 351: 350: 342: 327: 323: 317: 309: 304: 303: 294: 286: 282: 278: 274: 270: 266: 262: 255: 247: 243: 237: 221: 217: 213: 209: 205: 201: 194: 186: 180: 176: 169: 165: 155: 152: 150: 147: 145: 142: 140: 137: 136: 130: 128: 124: 120: 116: 112: 103: 101: 97: 88: 85: 81: 78: 76: 71: 68: 64: 60: 56: 47: 45: 41: 37: 33: 29: 25: 21: 16: 348: 341: 331:November 10, 329:. Retrieved 326:www.inria.fr 325: 316: 301: 293: 268: 264: 254: 245: 236: 224:. Retrieved 220:the original 207: 203: 193: 174: 168: 113:team at the 109: 95: 94: 86: 82: 79: 72: 53: 27: 23: 22: 20: 15: 246:www.irif.fr 125:and by the 119:NPL network 75:complements 59:transmitter 226:August 30, 184:0521794838 160:References 374:Category 133:See also 63:receiver 55:Messages 285:8172150 123:ARPANET 106:History 100:Philips 67:channel 356:  283:  181:  50:Design 281:S2CID 61:A to 354:ISBN 333:2022 228:2013 179:ISBN 308:206 273:doi 212:doi 40:OSI 28:ABP 376:: 324:. 279:. 267:. 263:. 244:. 206:. 202:. 129:. 362:. 335:. 310:. 287:. 275:: 269:9 248:. 230:. 214:: 208:1 187:. 38:( 26:(

Index

network protocol
data link layer
OSI
sliding window protocol
Messages
transmitter
receiver
channel
complements
Philips
Donald Davies'
National Physical Laboratory
NPL network
ARPANET
European Informatics Network
Acknowledge character
Information theory
Negative-acknowledge character
Stop-and-wait ARQ
ISBN
0521794838
"Packet Switching at Philips Research Laboratories"
doi
10.1016/0376-5075(77)90010-1
the original
"TreX's Examples -- Bounded Retransmission Protocol"
"Data Communications at the National Physical Laboratory (1965-1975)"
doi
10.1109/MAHC.1987.10023
S2CID

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