1 2. CSMA…………
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1. Ey ALOHA Ey STOPA K p eo 7 59PM bes E My Documents jn Favorites My Network Places Adobe Scripts E4 Games My eBooks My Videos Virtual CD yg Jal Files Import Cancel Repeat the same to refresh the existing Receiver data with your data Benchmark Electronic Systems 46 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 1 Graph Plot Procedure Scroll down to see the plot 4 Microsoft Excel STOPRWAIT P1000 xIs File Edit View Insert Format Tools Data Window Help Oss SR BeS o B EF SMD zara B C l D E F 80 Data Packet Le 1000 81 Data Rate C 8000 82 Expt Duration i 100 83 Ack Packet Ler 10 84 65 Time out ms Received DeAcknowlledge Successfully 1X Throughput 1000 0 01 1500 0 02 2000 0 52 3000 0 52 4000 0 52 Time out Vs Throughput X Throughput Throughput 1000 2000 3000 4000 Time Out ld 4 gt gt h Time Out Ys X X Vs BER Ready start IE wa Zs D PrimoPD gt Howstu tay Docume iu Micraso fr P1000 g stop wai EA Microsof f 9 12 10 PM 9 Follow the same procedure to Plot BER vs X Benchmark Electronic Systems 47 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 2 Configuration menu details Contiguration View Node Id o Duration ho Protocol CSMA CD PacketLenath 1000 pules A Baud Rate on Inter Packet Delay 400 m Base Address 340 Mo of Packe2. 4000 Model Graph Time out Vs Throughput 0 6 2 0 4 lt D X Throughput O 0 2 0 T I 0 1000 2000 3000 4000 5000 Time Out Benchmark Electronic Systems 21 Lan T Experiments Quick reference manual ver 1 3 3 Stop and Wait with BER Experiment 7 STOP amp WAIT WITH BER Aim Provide reliable data transfer between two nodes over an error network using the stop and wait protocol Procedure 1 Set the error rate to 10 77 in the NEU 2 Follow the Stop and Wait Experiment procedure for running the experiment 3 Set the time out value as 3000 ms in the sender window PC 1 SENDER mee StopiWait Sender Packet 1 Retransmitted Packet 1 Retransmitted Packet 1 Retransmitted Link Failure Failed after MAX RETRIES Mode 0 CSMA CD Sender Statistics Ts Packets 4 Ax Packets SE PC 2 RECEIVER SE ae StophkWait Sender Slul iHl l te Bl sent seqNo 1 Packet 1 Retransmitted Packet 1 Retransmitted Packet 1 Retransmitted Link Failure Failed after MAX RETHRIES successfully Transmitted 0 Retransmitted Count 3 Node 0 CSMA CD Sender Statistics TxPackets 4 4006 Rs Packets Tx Bytes Frame Errors Ty Aborted Ax Buttes Tx O Length 0 Collisions 0 Aix Length CAC Errors jg Save Freeze Missed Ax Packets Refresh 4 From the Statistics window note down the number of successfully transmitted packe
3. 4 Run the experiment by clicking button ED or by choosing RUN gt Start from each application 5 View the statistics window for results To view the statistics window click on button Only Tx packets and collision count are taken into account for MAC calculation Benchmark Electronic Systems 7 Lan T Experiments Quick reference manual ver 1 3 3 CSMA PC 1 Node 0 CSMA Sender Statistics Node 1 CSMA Sender Statistics Ts Packets 461 RAs Packets Ts Packets 455 Rs Packets 47022 46716 Tx Bytes Frame Errors Tx Bytes Frame Errors Te Aborted Te Aborted 0 As Bytes Rs Bytes Ts Length 0 Ts Length 0 As O Length Rs O Length Collisions 4 Collisions 4 CAC Enos fp Missed Ax Packets 44 CRAC Eror 0 Missed Ax Packets M7 Save Freeze Fietresh Save Freeze Refresh Mode U LSMA Sender Statics Tx Packets 450 Ry Packets TxPackets 353 Rix Packets Tx Bytes 46716 Frame Eiror F Tx Bytes 46818 Frame Esrors TxAborted 0 Tx Aborted 0 Ax Bytes Pix ytes 45900 Tx Length a Tx Length fo Colisions f2 Fix Length Colisions fd RxQLengh 3 CRC Emors lo Missed Ax Packets 443 CRC Eros p Missed Fix Packets 446 6 Note down the readings once the experiment is completed 7 Repeat the above steps for various values of ta 8 Calculate the Practical offered load from the below given formula and plot the graph between the practical Offered load and Throughput
4. Places J Tami Adobe Scripts EA Games My eBooks My Videos Virtual CD v9 exe BE fal Frame Errors 5 Frame Errors 25 Frame Errors 91 Frame Errors Frame Errors 234 Frame Errors 171 Missed Rx Packts 55 Missed Rx Packts 95 Missed Rx Packts 124 Missed Rx Packts 186 93 Missed Rx Packts 30 Missed Rx Packts E My Documents 4a Repeat the above step for all the four nodes Now click the RESULT USING 4 nodes sheet to view the graph Benchmark Electronic Systems P100 Ea micr Lan T Experiments Quick reference manual ver 1 3 3 A endix 1 Graph Plot Procedure 4 Microsoft Excel ALOHA P100 xls File Edit View Insert Format Tools Data Window Help Adobe PDF f A mN a EJ Arial DHA 6h aa B E D TE Tx Nodel Tx Node 2 Tx Node 3 Tx Node 4 G 23 36 54 52 18 10 4 19 35 46 41 26 1 0 25 38 43 39 11 4 0 _ x by E gt S 16 33 60 45 19 10 6 F G Offerec X Throughput 0 101 0 2 0 444 0 766 1 293 1 82 2 464 0 083 0 142 0 205 0 177 0 074 0 025 0 01 Offered Load Vs Throughput 1 Plot Area b Offered Load G 4 gt IMN Node 1 Node 2 Node 3 Node 4 Result using 4 nodes Ready FECIA IE A T Throughput Note Save exact seven readings for MAC experiments while using this template Shortage or
5. Cancel Cancel OK Cancel bytes ms Configuration menu Node id 0 on config menu 1 and Node id 0 on config menu 1 and 1 on config menu 2 1 on config menu 2 Baud Rate 8Kbps At both the config Baud Rate 8Kbps At both the config menu and NEU menu and NEU os araton 300 Direction seer Dirction s Note All the nodes have to be configured as Senders Set the topology as Bus Benchmark Electronic Systems 6 Lan T Experiments Quick reference manual ver 1 3 3 CSMA G is the generated load in the network N is the number of nodes participating in the network For example let us say that 4 nodes using 2 computers P is the packet length expressed in bits say 100 bytes 800 bits C is the data rate normally set as 8kbs which is selected in the NEU ta is the inter packet delay expressed in seconds the time interval between two consecutive packets generated So lets assume ta 40 milliseconds and substitute the above mentioned parameters in the Equation A which leads to G 10 Like wise assume various values of ta to generate offer loads in the range of 0 1 to 10 Substitute the ta in the configuration menu 3 Click OK button and Download the driver to the NIU using the BOOT button LJ command Booting from any one of the applications is enough PC 1 PC 2 eo el fase E cama la mlg 112 2 la wle 118 2 lal wek tle 2 ala weh 118 2
6. Tx Bytes 8604 Frame Errors Ts Bytes 17172 mana Enos Tx Bytes Frame Errors 0 y Frame Errors 0 Tx Aborted o Tx Aborted ota cM Rx Bytes 72210 TxAborted j0 ictal Rix Bytes 63846 Rx Bytes 42744 Tx Q Length O Ee et TxQ Length 0 Tx O Length 0 9 Tx O Length 0 a 5 eer isi Rix O Length isi x O Leng Collisions fo Rx Q Length Collisions cc 7 Rx Q Length Collisions 0 xQ Leng Collisions 0 CRCEnots 0 Missed Rx Packets 0 CRCEnos 0 Missed Rx Packets 0 Papero Missed Fix Packets 0 pers PRE E Save Freeze Refresh OK Spar Gen Refresh Save Freeze Refresh OK _ Save _Freeze _ Refresh Lo 7 Note down the readings once the experiment is completed sw 8 Repeat the above steps for various values of ta 9 Calculate the Practical offered load from the below given formula and plot the graph between the practical Offered load and Throughput Note You can also use the template for plotting the graph Please refer Appendix 1 to plot the graph using the template 10 Repeat the experiment for various values of Packet length Node Data rate 11 Repeat the above steps while running the experiment set the BER to 107 in the NEU or try to stop one of the nodes and observe the behavior and explain the same Calculation of Practical Throughput X from the obtained readings Sum of Tx packet in all the nodes Packet Length 8 Duration of Experiment Data rate Benchmark Electronic Systems 18 Lan T Experiments Quick
7. 0 A Successfully Retransmitted Count 1 4 Rx Packets Rx Bytes Rx Q Length Frame Errors Missed Rx Packts 5 60 2 3 1 Successfully Retransmitted Count 2 4 Rx Packets Rx Bytes Rx Q Length Frame Errors Missed Rx Packts 5 60 2 2 0 Successfully Retransmitted Count 52 0 Rx Packets Rx Bytes Rx Q Length Frame Errors Missed Rx Packts 53 636 QO 0 0 Successfully Retransmitted Count 52 QO Rx Packets Rx Bytes Rx QLength Frame Errors Missed Rx Packts 53 636 0 0 0 Successfully Retransmitted Count 52 0 Rx Packets Rx Bytes Rx Q Length Frame Errors Missed Rx Packts 53 636 Oo 0 Oo P1000 ia how to E stop was EH ALOHA Ey STOPS Benchmark Electronic Systems 45 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 1 Graph Plot Procedure Go to Data gt Refresh data option EA Microsoft Excel STOPRWAIT P1000 xIs File Edit Yiew Insert Format Tools Data Window Help Adobe PDF OSHA SGReEBS gt SrA 4 MQ S 2 8 E14 A 2000 B Stopa Wait PacketLength 1000 Tx Packets 6 Stop Wait PacketLength 1000 O Tx Packets 7 Stopa Wait PacketLength 1000 j Tx Packets 53 Stop amp Wait 8 PacketLength 1000 20 Tx Packets 63 Stop amp Wait PacketLength 1000 5 Tx Packets 53 Ready Start CSMA CD i R IPD C Data Rate TimeOut 400 6000 1000 1 Tx Q Length Collisions CRC Errors Rx Packets Rx Bytes Rx Q L
8. C C tab and select the category as Precompiled headers and select the Automatic use of precompiled headers option Click OK button Under Tools menu select Options and select directories tab Pull down Show directories for and select include files Write C Latrain Include as the last entry in the Directories field that lists already other required files Pull down Show directories for and select ibrary files Write C Lantrain lib as the last entry in the Directories field that lists already other required files Save the entire workspace and the project is ready for coding and compilation Choose the Test cpp file and do the necessary coding and Build it by pressing the key F7 and run it by pressing CtrI F5 Benchmark Electronic Systems 52 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 3 Developing Lan T applications Customising the Shell The user interface for all LAN Trainer experiments is provided by a collection of functions referred to as the Shell This method is followed to focus the topic of interest in the algorithm or the method followed in implementing a protocol than on the user interface part Even though it is recommended to concentrate on the protocols and its implementation the complete source code for the Shell is given in C Lantrain Src ShellVxy directory for the user to customize according to their requirements The last two alphabets in the filename represent the version number For example S
9. Jo66 Model Graph Time out Vs Throughput 0 8 _ 0 6 Q lt 3 0 4 o E 0 2 0 I 0 1000 2000 3000 4000 Time Out 5000 X Throughput Benchmark Electronic Systems 32 Lan T Experiments Quick reference manual ver 1 3 3 Sliding Window Go Back N with BER Experiment 9 SLIDING WINDOW GO BACK N WITH BER Aim Provide reliable data transfer between two nodes over an error network using the sliding window GBN protocol Procedure 1 Set the error rate to 10 7 in the NEU 2 Follow the Sliding Window GBN experiment procedure for running the experiment 3 Set the time out value as 3000 ms in the sender window PC 1 SENDER PC 2 RECEIVER SLIDING WINDOW Sender a gt lt E SLIDING WINDOW Receiver ada Ts Packets 0 Fix Packets Ts Bytes oO Frame Errors Ts Aborted o Ts Length oO Collisions oO NE Ceili CAE Errors Missed Ax Packets 0 Save Freeze Refresh Ax Bytes Retransmitting pkt 1 Retransmitting pkt 2 Retransmitting pkt 3 4 From the Statistics window note down the number of successfully transmitted packets and calculate the throughput Calculation of throughput is same as explained in the previous expt 5 Repeat the Experiment by setting different BER in the NEU 6 Use the values to plot the graph between BER Vs Throughput Note You can also use the template for plotting the graph Please refer Appendix 1 to plo
10. Mode BLOCKING TRANSMIT Token Release Mode Direction Sender Direction Boot File Hame C Lantrain Bin LAN T 13 EE 2 Boot File Name C _antrainBinsLanty 3 exe f en oren Type in an Integer Value Token IMMEDIATE TOKEN RELEASE Release Made IMMEDIATE TOKEN RELEASE Setting the configuration menu Node 0 noen Jo Baud Rate 8Kbps At both the Baud Rate 8Kbps At both the config menu and config menu and 100s Packet 100 bytes Packet 100 bytes Bit Delay O at NEU Bit Delay O at NEU Direction Sender ________ Direction Receiver 3 Set the IPD as 40 ms 4 Download the driver to the NIU using the BOOT button command for both PCs Benchmark Electronic Systems 38 Lan T Experiments Quick reference manual ver 1 3 3 FTP 5 Run the Receiver node first amp then the transmitter window While you do this the sender node will display a GetInt message box if you want to transmit a file from Client to server Enter 1 or else if you want to download a file from Server to client press 2 PC 1 SENDER a Node O Aloha Ftp Client File Configure Run Statistics Boot Help far ted Tht Sofie of e Getint TSEND Z2GET Cancel 6 Then Specify the Path of the file either to transmit or to download i e c test txt amp specify the timeout value PC 1 SENDER Node O Aloha Ftp Client Fie Configure Run Statistics Boot Help la wel tm Mode 0 ALOHA Sender St
11. Note You can also use the template for plotting the graph Please refer Appendix 1 to plot the graph using the template 9 Repeat the experiments for various values of Packet length Node Data rate and Bit delay Benchmark Electronic Systems 8 Lan T Experiments Quick reference manual ver 1 3 3 CSMA Calculation of Practical Throughput X from the obtained readings Successfully transmitted packet by a node Tx Packets Collision Count Sum of Successfully Tx packet in all the nodes Packet Length 8 Duration of Experiment Data rate Calculation of Theoretical Throughput G 1 G aG 1 G aG 2 eo G 1 2a 1 e7 1 aG eC a end to end bit delay in bits Packet length in bits bit delay N P Calculation of Practical Offered load Sum of Transmitted packets in all the nodes Packet Length 8 Duration of Experiment Data rate Benchmark Electronic Systems 9 Lan T Experiments Quick reference manual ver 1 3 3 CSMA Model tabulation For bit delay 1 oe Pa es cae ce ee Offered Load Throughput Throughput 800 107 93 99 101 0 436 0 400 0 37 Model Graph Offered Load Vs Throughput 0 8 0 7 0 5 a E Lae ome Throughput 0 3 2 S E 1 1 5 Offered Load G Benchmark Electronic Systems 10 Lan T Experiments Quick reference manual ver 1 3 3 CSMA CD Experiment 3 CSMA CD Aim Implem
12. button LJ command Booting from any one of the applications is enough 4 Run the experiment by clicking button Ea or by choosing RUN gt Start from each application Run the all the experiments at the same time 5 Set the Token Holding Time THT say 10000 ms PC 1 PC 2 oa TKNBUS Sender Sea a TKNBUS Sender fa ox m TKNBUS Sender RE na l Enter the THT in ms 10000 Enter the THT in ms 10000 X KE OK Cancel OK Cancel ance i Note While you do this THT window pops up enter the THT time in all nodes and press the OK button first in the node which has highest value of My Address Benchmark Electronic Systems 17 Lan T Experiments Quick reference manual ver 1 3 3 Token Bus button 6 View the statistics window for results To view the statistics window click on PC 1 PC2 EL STOPPED CO X 2 stoppep Cox stoppen Sell Token Generated by Node 0 Token Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Successfully Txed 84 Successfully Txed 168 Successfully Txed 166 Successfully Txed 373 Avg Delay 33337 Avg Delay 22743 Avg Delay 35156 Avg Delay 68756 Node 0 ALOHA Sender Statistics Node 1 ALOHA Sender Statistics f Node 1 ALOHA Sender Statistics 375 427 Tx Packets 87 Rx Packets Tx Packets 171 Fix Packets l Tx Packets fi 63 Rx Packets 633 Tx Packets Rix Packets 16368 Ts Bytes 38070
13. excess number of readings may produce errors Benchmark Electronic Systems 43 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 1 Graph Plot Procedure Procedure to plot graph for MAC Layer experiments using MS EXCEL template Save the readings of the LLC layer experiments by clicking Save button from the Statistics window from the sender and receiver nodes Mode CSMA CD Sender Statistics Eg Ts Packets od Rs Packets Tx Bytes zil Frame Errors Ts Aborted 0 Ax Bytes Te Length U Collisions 10 Ax Length CAL Errors 0 Missed Ax Packets U Save Freeze Refresh By default the file get saved in the Desktop You can also save it in other location Organise all the files in a common location Open MS EXCEL Browse open xls file in c Lantrain Stat Say Lantrain Stat Stop and Wait P1000 Stop and wait P1000 xls Click Timeout Vs X sheet Benchmark Electronic Systems 44 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 1 Graph Plot Procedure 4 Microsoft Excel STOPRWAIT P1000 xls S File Edit Yiew Insert Format Tools Data Window Help Adobe PDF Re rac ee eee ce kE K103 80 Data Packet Le 1000 81 Data Rate C 8000 82 Expt Duration i 100 83 Ack Packet Ler 10 84 85 Time out ms Received DeAcknowlledge Successfully 1X Throughput 1000 6 5 1 0 01 1500 5 5 2 0 02 2000 53 53 52 0 52 3000 53 53 52 0 52 4000 53 53 52 0 52 Time out V
14. 14 Lan T Experiments Quick reference manual ver 1 3 3 Model tabulation Offered Load Throughput _ 400 235 24 24 0101 49 w 208 rs 196 116 119 116 OS 0 469 0 976 0 758 1 904 189 133 463 13 18 3555 0 966 458 20 28 zes7 0 972 4000 27 2000 49 800 118 400 187 200 117 100 472 40 466_ Model Graph Offered Load Vs Throughput Throughput X l E U 0 1 2 3 4 5 E F7 8 9 Offered Load G Benchmark Electronic Systems CSMA CD 15 Lan T Experiments Quick reference manual ver 1 3 3 Token Bus Experiment 4 TOKEN BUS gt To implement the token passing access in BUS LAN Procedure LANT wer 1 Click on the Token Bus icon twice from the desktop 2 Click the Configuration button in the window in both the PC s PC 1 Sender PC 2 Sender LAN Trainer TokenBus a mlx 2 LAN Trainer TokenBus 0x S2LAN Trainer TokenBus fa mlx ELLAN Trainer TokenBus Configuration View Configuration View Configuration View Configuration View Nh Nodeld Jo Duration i000 Nodeid fT Duration fho s LA nodid Jo z Duration 100 d Nodeld ft Duration Protocol ALOHA PacketLength 100 Protocol ALOHA Packet Length fo bytes Protocol ALOHA PacketLenath 100 Protocol ALOHA PacketLength foo bytes Baud Rate K Inter Packet Delay mooo Baud Rate jk Inter Packet Delay jo ms Baud Rate jk i Inter Packet Delay mooo B
15. Configuration View Configuration View x Configuration View Configuration View Node Id 0 Duration 100 Node Id 1 Duration 100 Node Id 0 v Duration 1 Node Id 1 v Duration 100 q 40 00 Protocol ESMA Packet Length foo bytes Protocol ESMA Packet Length fioo bytes Protocol ESMA Packet Length foo bytes Protocol ESMA Packet Length nooo o Baud Rate jk x Inter Packet Delay jg ms Baud Rate ak gt Inter Packet Delay 40000 ms Baud Rate jk x Inter Packet Delay ad ms Baud Rate aK xl Inter Packet Delay 40 Base Address fox320 No of Packets 4 Base Address fox320 No of Packets 400 Base Address fo 320 No of Packets a Base Address fox320 No of Packets No of Nodes 4 MyAddress fo No of Nodes E MyAddress iz No of Nodes 4 MyAddress fo NoofNodes 4 MyAddress RxMode NON_PROMISCOUSMODE Ss gt _ RxMode NON_PROMISCOUSMODE gt RxMode NON_PROMISCOUSMODE ss RxMode NON_PROMISCOUSMODE I O Mode BLOCKING TRANSMIT I OMode BLOCKING TRANSMIT i ass I O Mode BLOCKING TRANSMIT I O Mode BLOCKING TRANSMIT Pss Mode IMMEDIATE TOKEN RELEASE x ease Mode IMMEDIATE TOKEN RELEASE x ioe Mode IMMEDIATE TOKEN RELEASE x ree Mode IMMEDIATE TOKEN RELEASE x Direction Sender Direction Sender Direction Sender Direction Sender Boot File Name C Lantrain Bin Lantvi3 exe pa Boot File Name C Lantrain Bin Lantvi3 exe E Boot File Name C Lantrain Bin Lantvig exe a Boot File Name C Lantrain BinsLantvl3 exe E Cancel OK
16. Contents MOK GN RINO creseron a cian Seep cae a DEO ana WV aN bs castes erste etree eee onaen eee Stop and Wall With BER icsi R Sliding Window GO Back N ccccceeeeeneeeneeneeeeeeeeeeeneeeeeeesaseneeess Sliding Window Go Back N with BER cccseeseeeneeeneeeeeeneeees Packet I FANSMISSION saiessectevestedisnaiesenaitesectiiedianiencr aaiewetaebteesiawnas a er ee ee a h o ak _ O HNC ALANS IOF oo tives sicadoiawnceaeetaetadeanaiuensensiea andes siuwanedeecasiuwentanes oh NO Appendix 1 Graph plot proCedure cccseeeseeeeeeeeeeeeeneeeeneeeneees oh GO Appendix 2 Configuration Menu detalls cccceeeeeeeneeeeeeeeeeeeens Aa Appendix 3 Developing Lan T application cccccsseeeeeeeeeeeeeenes 11 16 21 25 28 30 33 35 38 41 48 50 Lan T Experiments Quick reference manual ver 1 3 3 Aloha Experiment 1 ALOHA gt Implement the ALOHA protocol for packet communication between a number of nodes connected to a common bus Procedure LAN 1 Click on the MAC Experiment icon twice from the desktop on both PC s 2 Click the Configuration button in the window in both the PC s PC 1 PC 2 PT EENE E Tx daouat View Tx TRENEN View Node Id los Duration fioo s Node Id 1 l Duration fo s Protocol ALOHA Packet Length ho bytes Protocol ALOHA Packet Length fo BaudRate 8K v Inter Packet Delay 4000 ms Baud Rate K Inter Packet Delay
17. Length 100 Aloha Duration 100 20 Tx Packets 192 19584 Aloha Duration 100 Tx Bytes MAC PacketLength 24 100 5 Tx Packets 318 MAC PacketLength 100 Aloha 100 Tx Bytes 44166 Aloha Duration 30 Tx Packets li 433 MAC PacketLength Tx Bytes 32436 Duration D IPD 4000 Tx Q Length o 0 IPD 2000 Tx Q Length o 0 IPD 800 Tx Q Length 11730 0 0 IPD 400 Tx Q Length 0 o PD 200 Tx Q Length D 0 PD 100 Tx Q Length 0 0 IPD Sender C Data Rate 8000 Collisions 5 Sender C Data Rate 8000 Collisions 16 Sender C Data Rate _CRC Errors 0 CRC Errors D Cons Cut Copy Send G amp S Baste C Dat Paste Special Rx Packets 59 Rx Packets Collis Insert Delete Sende Clear Contents C Dat ta Insert Comment Collis Format Cells Sende cy Edit Text Import C Dat Data R Bn amet SMS Refresh Data Sender C Data Rate ange Properties Rx Bytes 6018 Rx Bytes 10098 Rx Bytes 13056 Rx Bytes 9894 Rx Bytes 3468 Rx Bytes D Rx Q Length 3 Rx Q Length 3 Rx Q Length 3 Rx Q Length 3 Rx Q Length 3 Rx Q Length D I 4 gt gt Node 1 Node 2 Node 3 Node 4 f Result using 4 nodes Ready Start E o Tamil Import Text File Look in History My Documents Favorites My Network
18. Missed Ax Packets 51 J Save Freeze Refresh OF acl AAC Sender STOPPED Sonfigure Paar Offered Load 2077 Successfully Txed 405 Awg Delay 246 Mode 1 CSMA CD Sender Statistics Tx Packets 405 R Packets Te Butes a 310 Frame Errors Tx Aborted jo 53346 RAs Bytes Ts Length fo Collisions fi RAs Q Length 3 CRE Errors E Missed Ax Packets 51 a Save Freeze Refresh OF 6 Note down the readings once the experiment is completed 7 Repeat the above steps for various values of ta 8 Calculate the Practical offered load from the below given formula and plot the graph between the practical Offered load and Throughput Note You can also use the template for plotting the graph Please refer Appendix 1 to plot the graph using the template 9 Repeat the experiment for various values of Packet length Node Data rate Benchmark Electronic Systems 13 Lan T Experiments Quick reference manual ver 1 3 3 CSMA CD Calculation of Practical Throughput X from the obtained readings Sum of Successfully Tx packet in all the nodes Packet Length 8 Duration of Experiment Data rate Calculation of Practical Offered load Sum of Offered load count in all the nodes Packet Length 8 Duration of Experiment Data rate offered load count and successfully transmitted packet count is displayed in the main window of CSMA CD experiment Benchmark Electronic Systems
19. Node id 0 on config menu 1 and Node id 0 on config menu 1 and 1 on config menu 2 1 on config menu 2 CSMA CD CSMA CD Baud Rate 8Kbps At both the config menu Baud Rate 8Kbps At both the config menu and NEU and NEU Duration 100s Duration 100 Packet 1000 bytes Packet 1000 bytes Direction Sender Direction Sender Note All the nodes have to be configured as Senders Set the topology as Bus Benchmark Electronic Systems 11 Lan T Experiments Quick reference manual ver 1 3 3 CSMA CD G is the generated load in the network N is the number of nodes participating in the network For example let us say that 4 nodes using 2 computers P is the packet length expressed in bits say 100 bytes 800 bits C is the data rate normally set as 8kbs which is selected in the NEU ta is the inter packet delay expressed in seconds the time interval between two consecutive packets generated So lets assume ta 40 milliseconds and substitute the above mentioned parameters in the Equation A which leads to G 10 Like wise assume various values of ta to generate offer loads in the range of 0 1 to 10 Substitute the value of ta in the configuration menu F 3 Click OK button and Download the driver to the NIU using the BOOT button command Booting from any one of the applications is enough H Mt di Crag fod ence peg il ewe H pera cea H Fani Toa Grid A zd Sur ed craked Senda ieee Hore cra
20. ample it is Test dsp file Copy the following files from C Lantrain Src ShellVxy to the current project directory C Lantrain Src Test e Res directory e stdAfx cpp and stdAfx h e resource h and resource hm e flanT rc and lanT aps e A sample mac cpp file e Rename this mac cpp file as Test cpp e Note The directory and filename Shellxy represents the LAN T Shell with Version specified by x and y For example SHellV13 denotes LAN T Shell Ver1 3 Above said files have to be added in the project workspace under the appropriate folder names To add click the folder name say Source Files and right click the mouse button and select Add files to Folder This will open up the File Open dialog box through which you can add files that are listed below in their appropriate folders Benchmark Electronic Systems 51 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 3 Developing Lan T applications Select Source Files folder and add the following lanT rc stdAfx cpp Test cpp file Select Header Files folder and add the following resource h resource hm stdAfx h Select Resource Files folder and add all the files in the Res directory Now save the entire workspace Under Projects menu select Settings and do the following Select General tab and choose Use MFC in a static library Select Link tab and link the libraries by writing Shellvxy lib Lantrn ib in the Object Library modules field Select
21. and repeat the above mentioned steps and observe the results Freeze Statistics Boot Help Rs Packets Frame Errore Ax Bytes RAs O Length Missed Aix Packets Refresh Benchmark Electronic Systems PC 2 RECEIVER File Configure Run welcome to Lan demo Statistics Boot Help Packet transmission No of packets received correctly 2 No of packets discarded due to CRC Node 0 ALOHA Receiver Statistics Tx Packets I Ts Bytes 0 Tx Aborted T O Length 0 Collisions 0 CAC Errors 0 Save RAs Packets Frame Errors Rs Butes RAs O Length Missed Aix Packets Freeze Refresh 37 Lan T Experiments Quick reference manual ver 1 3 3 FTP Experiment 11 FTP With za 1 Click on the FTP icon from the desktop on both PCs 2 Click the Configuration button in the window in both the PC s PC 1 SENDER PC 2 RECEIVER et LAN Trainer FIP f ax i LAN Trainer FIP Configuration View Eg Configuration View Nodeld 0 Duration foo s A Nodeld 0 Duration 100 Protocal ALOHA Packet Length 1000 bytes Protocol ALOHA Packet Length hooo a 0 mo Baud Rate aK Inter Packet Delay es Baud Rate oK Inter Packet Delay ms Base Address Mo of Packets Base Address Ho of Packets 4 Mo of Nodes 4 MyAddress hl Mo of Nodes 4 MyAddress 2 Rs Mode INON_PROMISCOUS MODE Rs Mode NON _PROMISCOUS MODE O Mode BLOCKING TRAN SHIT WO
22. atistics Tx Packets o Aix Packets GetString Enter the File ame Je test tel Cancel i WIESEO Ax Packers Save Freeze Refresh OK Benchmark Electronic Systems 39 Lan T Experiments Quick reference manual ver 1 3 3 FTP 7 At the end of transmission the file will be stored in the server node s desktop PC 1 SENDER PC 2 RECEIVER SLIDING WINDOW Sender Bx HE Node O Aloha Ftp Server Running File Configure Run Statistics Boot Help Fie Configure Run Statistics Boot Help tel wle e alal wel 1 Ts Packets fes Fix Packets Panes es136 E Node 0 ALOHA Receiver Statistics Tx Aborted fo Ei Ts Packets Rx Packets Ves Bt engir o Tx Bytes Frame Errors ikon gee TxAborted O Ax Butes CRC Errors fo Missed Ax Packets Tx Length 1 r R Length Save Freeze Refresh Collisions 0 apana S 7 n CRC Errors 0 Missed Ax Packets Slided Winlow 5 YWinhigh 0 VWinlow 5 VYfinhigh 0 SeqNumTransmitted successfully Transmitted 61 save Freeze Refresh Hetransmitted Count 0 Benchmark Electronic Systems 40 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 1 Graph Plot Procedure Procedure to plot graph for MAC Layer experiments using MS EXCEL template Save the readings of the MAC layer experiments by clicking Save button from the Statistics window in all the nodes Mode 1 ALOHA Sender Statistics Tx Packets bbe As Packets Tx Bytes 67524 Frame Erro
23. aud Rate x Inter Packet Delay aooo ms Base Address 0x320 No of Packets oo d Base Address 0320 No of Packets 4 Base ddress 0x320 No of Packets 4 o Base Address 0320 No of Packets Bo No of Nodes ae MyAddress No of Nodes 4 MyAddress TZ No of Nodes moo My ddress D No of Nodes 4 o o MyAddress i Rix Mode NON_PROMISCOUS MODE Rx Mode NON_PROMISCOUS MODE 5 Rx Mode NON_PROMISCOUS MODE Rx Mode NON_PROMISCOUS MODE v 1 0 Mode BLOCKING TRANSMIT v 1 0 Mode BLOCKING TRANSMIT 1 0 Mode BLOCKING TRANSMIT v I O Mode BLOCKING TRANSMIT E IMMEDIATE TOKEN RELEASE Token IMMEDIATE TOKEN RELEASE m Token IMMEDIATE TOKEN RELEASE peers MEDIATE TOKEN RELEASE Release Mode Release Mode Release Mode i Direction Sender v Direction Sender Direction Sender v Direction Sender v Boot File Name C Lantrain BinSLANTV1 3 EXE ka Boot File Name C Lantrain BinsLONTY1 3 EXE Hl Boot File Name C Lantrain Bin LANTV13 EXE a Boot File Name C Lantrain BinSLANT 13 EXE OK Cancel Cancel OK Cancel Cancel Type in an Integer Value Type in an Integer Value IMMEDIATE TOKEN RELEASE v Setting the configuration menu Node id 0 on config menu 1 and Node id 0 on config menu 1 and 1 on config menu 2 1 on config menu 2 ALOHA ALOHA 8Kbps At both the config 8Kbps At both the config menu menu and NEU and NEU Duration 100s Duration Packet Length 100 bytes Packet Length 100 bytes My Address 0 on config m
24. ct Build is the process of compilation and linking that creates the exe file that is ready to run using the key F7 Once the Build result is successful run the experiment by pressing the keys Ctrl F5 Please refer Microsoft VC User Manual for more options in compiling and linking a project file Benchmark Electronic Systems 50 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 3 Developing Lan T applications Creating a New Experiment Open experiment workspace from the following path C Lantrain Src Expts dsw in VC Create a new project by clicking New in the File menu Choose a project name say Test and choose MFC Appwizard EXE as project type Check the option Add to current workspace and finally click the OK button Select Single document and click Finish button Now the wizard will create a Project Workspace Test with three directories namely Source Files containing cpp files Header Files containing h files and Resource Files containing resource files under it This project will now be the active project as far as VC workspace is concerned Delete all the files from this project workspace i e from Source Files Header Files and Resource Files directory To delete a file from workspace click that file and press Del key Open Windows Explorer and delete all files from the working directory C Lantrain Src Test including the Res directory except the dsp file in our ex
25. e tee At both the Config a Rate 8Kbps At both the menu and NEU m r menu and NEU Duration 10s SSS Direction Sender Direction Receiver F 3 Download the driver to the NIU using the BOOT button command for both PCs 4 Run the Receiver node first amp then the transmitter window Enter the receiver s node ID in the sender s dialogue box once it is prompted Benchmark Electronic Systems 35 Lan T Experiments Quick reference manual ver 1 3 3 Packet Transmission PC 1 SENDER Wt PKT Sender File Configure Run Statistics Boot Help lta tt Sele of Enter Destination Address Cancel 5 After this the sender will display another Get String dialogue box here you can key in your string using the keyboard amp press the ok button PC 1 SENDER a PKT Sender File Configure Run Statistics Boot Help far Med Tht Gel e Node 0 ALOHA Sender Statistics Tx Packets jo Ax Packets GetString Packet Contents welcome to LanT dermal Benchmark Electronic Systems 36 Lan T Experiments Quick reference manual ver 1 3 3 Packet Transmission 6 Observe the text in the receiver node If an empty message is sent both the sender and receiver should terminate STOPPED File Configure Run PC 1 SENDER welcome to Lant demo Packet transmission Tx Packets 4 Tx Butes af Tx Aborted O Tx Length 0 Collisions 0 CAC Eror jg Save Set the BER to 10
26. ength Frame Errors Missed Rx Packts 0 8 0 5 Duration 100 Tx Bytes 6012 CSMA CD Duration 100 Tx Bytes 7014 CSMA CD _IPD C Data Rate TimeOut Duration 100 Tx Bytes 53106 CSMA CD i IPD C Data Rate T Paste apedal Duration 100 Tx Bytes 53106 CSMA CD Duration Tx Bytes 53106 Tx Q Length Collisions Tx QLength Collisions C a Sender QO Sender PD C Data Rate TimeOut Successfully Retransmitted Count 4 60 2 3 1 Successfully Retransmitted Count 400 8000 1500 2 4 Tx Q Length Collisions CRC Errors Rx Packets Rx Bytes Rx Q Length Frame Errors Missed Rx Packts 0 8 0 5 QO Sender 400 s000 yy 0 n Copy D Sender E paste 60 2 2 0 Successfully Retransmitted Count 0 Bytes Rx Q Length Frame Errors Missed Rx Packts 636 0 0 oO transmitted Count 400 6000 Insert 0 0 Delete O Sender Clear Contents 0 Bytes Rx Q Length Frame Errors Missed Rx Packts 636 0 D D IPD C Data Rate T Y Insert Comment 100 8000 400 btransmitted Count 0 Tx Q Length Collisions C g amp Format Cells Bytes Rx Q Length Frame Errors Missed Rx Packts 0 Edit Text Import Data Range Properties ra epetgeens pay o Parameters Refresh Data 636 0 0 o ees 141 41 gt M Time Out vs XX Vs BER i ee ae aes el ed i 4 i af TamilBe J Dell Ins e Look in P1000 cal how to 5 sender
27. ent the CSMA CD protocol for packet communication between a number of nodes connected to a common bus Procedure LAN 1 Click on the MAC Experiment icon ar twice from the desktop on both PC s 2 Click the Configuration button in the window in both the PC s PC 1 PC 2 a a i Prr i a leu a F J Duda i cia ai lg q Diesen I Z Carstion CSMATD Poket Length 1 bs M J ECS Packet Length a20 biaa H TOMATI Pokat Langh 1AN i EENE Packet Length 7000 bates nn Ped Daig 72 irda Facket Dalay 43 TE k 7 inter Pace Ciniag 2 i nim Faiet Liai 4 TE tn Heal Peaches z Ma of Packets f Babe acts ez Hia Fakai uo u z Ma of Packets 4 Wide A se fi Wpis i haol kinder fA Mythos f oder f Mpt Fie Moda HON PROH ECON MODE Fa Ha HOH_PROMISCOUS MODE Fis Mieta HON PROH COJ MODE HOH_PROMSCOUS MODE DO Mede BLOONS TRANSMIT BLOCIING TRAHEMIT 7 DO Hase BLOOUNG TRANGHIT e BLOCTING TRAHEMIT Token aksn af TOREM AFI EA Token Fisheare birda MMECSMIE TOREH FELEASE Fesbnace biada FEDME TOREM RELEASE Peka Mocks IMMECGATE TOREMFELESSE Token MEDA TOKEN RELEASE iratsi Jarek 7 Dasdi ares iratsi Jare 7 Dustin Finda Mada Bead Fils Hae CS Larabar 2 eee Boot Fike Hera C i snhrid rij svi T aos Eea File Meare AL r Ea Lal T E Bock File Harai Lamanna eaa or Carcel OF Cm 14 Carcel DE Cond Configuration menu
28. enu 1 and My Address 2 on config menu 1 and 1 on menu 2 3 on menu 2 Bit Delay O at NEU Bit Delay O at NEU Direction Senders Direction Sender O Z o Z o Notes 1 If you connect two PC s and configured four nodes then set the My Address as 0 to 3 in all four nodes if you connect three PCs and configured six nodes then set the My Address as 0 to 5 in all six nodes 2 Start running the experiment from the lowest priority node i e from My Address 3 in case of four nodes and 5 in the case of six nodes 3 No of Nodes has to be set as 4 when two PCs are connected and 6 when three PCs are connected Benchmark Electronic Systems 16 Lan T Experiments Quick reference manual ver 1 3 3 Token Bus G is the generated load in the network N is the number of nodes participating in the network For example let us say that 4 nodes using 2 computers P is the packet length expressed in bits say 100 bytes 800 bits C is the data rate normally set as 8kbs which is selected in the NEU ta is the inter packet delay expressed in seconds the time interval between two consecutive packets generated So lets assume ta 40 milliseconds and substitute the above mentioned parameters in the Equation A which leads to G 10 Like wise assume various values of ta to generate offer loads in the range of 0 1 to 10 Substitute the value of ta in the configuration menu 3 Click OK button and Download the driver to the NIU using the BOOT
29. es that are listed below in their appropriate folders e Select Source Files folder and add the following all cpp files cpp lanT rc Benchmark Electronic Systems 53 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 3 Developing Lan T applications Select Header Files folder and add the following all header files h resource hm Select Resource Files folder and add all the files in the Res directory Under Projects menu select Settings and do the following Select General tab and choose Use MFC in a static library Select C C tab and select the category as Precompiled headers and select the Automatic use of precompiled headers option Click OK button Under Tools menu select Options and select directories tab Pull down Show directories for and select include files Write C Latrain Include as the last entry in the Directories field that lists already other required files Pull down Show directories for and select library files Write C Lantrain lib as the last entry in the Directories field that lists already other required files Save the entire workspace and the project is ready for coding and compilation Shell has all cpp files appropriate for the dialogs used in the user interface and mainframe cpp for tool bar and menu You may modify them or add or remove dialogs as you wish and save them After finishing the coding Build it by pressing the key F7 and it will create a lib fi
30. et Delay to 400msecs F 4 Click OK button and Download the driver to the NIU using the BOOT button command Booting from any one of the applications is enough 5 Run the experiment by clicking button ED or by choosing RUN gt Start from each application 6 Set the Timeout Value to 1500 ms PC 1 SENDER PC 2 RECEIVER S1 Stopt Wait Sender x StoptWait Receiver a la t k 18 2 AckSent for PktNo 1 AckSent for PktNo 2 Link Failure Failed after MAX RETF Node 0 CSMA CD Sender Statistics Tx Packets 2 Rx Packets Tx Bytes 2004 Frame Errors Node 0 CSMA CD Receiver Statistics Tx Abq euuty Frame Enos Fix Bytes 5 Ax 0 Length 0 Missed Rx Packets 0 l Freeze Relresh esmacd stat 12 Paint a4 LAN Trainer Stop amp 7 Note down the no of successfully Transmitted Packets 8 Repeat the above steps for various time out values and plot the graph between timeout Value amp Throughput Find the optimum timeout value from the plot Note You can also use the template for plotting the graph Please refer Appendix 1 to plot the graph using the template 9 Explain why the throughput is less compared to CSMACD protocol Calculation of Practical Throughput Sum of Successfully Tx packets Packet Length 8 Duration of Experiment Data rate Benchmark Electronic Systems 26 Lan T Experiments Quick reference manual ver 1 3 3 Stop and Wait Model Tabulation
31. fect in this stand alone experiment Refer programmer s manual for using various types while writing codes for exercises Direction Specify which direction to be followed by each node In MAC experiments Sender will only transmit data packets and Receiver will only receive In DLL experiments Sender will transmit data packets and receive acknowledgement packets while Receiver will receive them and transmit acknowledgement packets In FTP Sender is the client and Receiver is the server Boot File Name Name and path of the NIU driver file This is for future use The default file and location is C Lantrain bin LantV13 exe It may be left to this default name Benchmark Electronic Systems 49 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 3 Developing Lan T applications Developing LAN Trainer Applications The LAN Trainer API is a Windows DLL Dynamic Link Library written in C Microsoft Visual C compiler that comes under Microsoft Visual Studio is used for the Shell and the experiments Microsoft Visual Studio provides a development environment for Visual C This integrated set of tools runs under Windows 95 98 Windows NT or Windows 2000 or other operating systems as recommended by Microsoft The Developer Studio user interface consists of an integrated set of windows tools menus toolbars directories and other elements that allow you to create test and refine your application in one place This Append
32. fig menu and NEU menu and NEU Duration 1005 Baratin 1005 Direction se ireeion Soden Note All the nodes have to be configured as Senders Set the topology as Bus Benchmark Electronic Systems l Lan T Experiments Quick reference manual ver 1 3 3 Aloha G is the generated load in the network N is the number of nodes participating in the network For example let us say that 4 nodes using 2 computers P is the packet length expressed in bits say 100 bytes 800 bits C is the data rate normally set as 8kbs which is selected in the NEU ta is the inter packet delay expressed in seconds the time interval between two consecutive packets generated So lets assume ta 40 milliseconds and substitute the above mentioned parameters in the Equation A which leads to G 10 Like wise assume various values for ta to generate offer loads in the range of 0 1 to 10 Substitute the value of ta in the configuration menu 3 Click OK button and Download the driver to the NIU using the BOOT button command Booting from any one of the applications is enough so hae Alatn Sender T Ox 2 Node 1 Awha Sender f CO Node 0 Aloha Sender BEE Node 1 Atoha Sender 7 O iar Node 1 Aloha Sender g w p 4 54 4M F A AN Node 1 Aloha Sender oe Node 0 Aloha Sender 4 Run the experiment by clicking button or by choosing RUN gt Start from each application Benchmark Electronic Systems 2 Lan T Experiments Quick refere
33. hellV13 file is the Shell file of version number 1 3 If you wish to customize the Shell follow the steps given below Open experiment workspace from the following path C Lantrain Src Expts dsw in VC Create a new project by clicking New in the File menu Choose a project name say Shel Test and choose Win32 Static Library as project type Check the option Add to current workspace and finally click the OK button Click Finish button Now wizard will create a project with two directories namely Source Files and Header Files Add a new folder called Resource Files by clicking the right button of mouse on the project name here Shel Test files and selecting New Folder This will open up a dialog box with Name of the Folder field and File extensions field In the first field give the name as Resource Files and in the second field give as file extensions Open windows explorer and copy all the files from C Lantrain Src ShellVxy directory to the current project directory C Lantrain Src Shel Test This current project directory would have been created in the hard disk as soon as the project is added in the workspace as said in the above step Above said files have to be added in the project workspace under the appropriate folder names To add click a folder name say Source Files and right click the mouse button and select Add files to Folder This will open up the File Open dialog box through which you can add fil
34. in the experiments This has to be in milliseconds Number of Packets Specify number of packets in a window for Sliding Window experiment This field may be used for other purposes while writing codes for suggested experiments in exercise say for example to specify number of packets to be transmitted or received in a MAC experiment instead of following time My Address Specify the address of each node between 1 and 6 in top layers For example the server uses this field in FTP to identify the client for sending and receiving files Rx Mode Specify Promiscous or Non Promiscous mode of packet reception By default all the stand alone experiments use promiscuous mode of reception receives all the packet Altering this field will not have effect in the stand alone experiments Refer programmer s manual for using various types while writing codes for exercises I O Mode Fixes the types of transmit and receive modes In majority of the stand alone experiments blocking transmit and receive is used and the other types are left for the user to implement wherever necessary as suggested in exercises Altering this field will not have effect in the stand alone experiments Refer programmer s manual for using various types while writing codes for exercises Token Release Mode Specify the type of token release mode to be followed in token ring Manual token release is used in token ring experiment Altering this field will not have ef
35. ix describes the organization of the source code into workspaces and projects and how you can use the LAN Trainer to write network software You can modify the source code of the experiments supplied with the LAN Trainer or implement different protocols and projects by creating them as new experiments Finally if you wish you can customize the LAN Trainer shell Organisation of LAN Trainer Source Code LAN T software uses a single workspace for all the experiments and therefore all experiment projects are created under the workspace called Expts dsw that will be in C Lantrain Src directory A workspace is the one that contains one or more projects A project is the one that generates the executable file ex MAC exe In LAN T software Expts dsw is the workspace and the experiments are the projects namely MAC for ALOHA CSMA CSMA CD TknBus TknRing Pkt SIWinGBN StopWait FTP Modifying an Existing Experiment MAC experiment is taken here as an example to list the steps involved in modifying an existing experiment Each experiment is a project under the workspace discussed above e Open experiment workspace from the following path C Lantain Src Expts dsw in VC e Make the project that you want to modify say MAC active using the option Set Active Project from the Project menu e Open MAC cpp from the Source folder and do the necessary coding e Save workspace using Save Workspace menu option under File menu and Build the proje
36. jo ms Base Address 0320 No of Packets e Base Address foxs20 No of Packets 4 o No of Nodes 40 MyAddress No of Nodes MyAddress Oo g RxMode NON_PROMISCOUSMODE gt RxMode NON_PROMISCOUSMODE 120 Mode BLOCKING TRANSMIT v 1 0 Mode BLOCKING TRANSMIT X x Contuucation viene Node Id o x Duration po s Node Id Mo x Duration Protocol ALOHA Packet Length fho Protocol ALOHA Packet Length Baud Rate k Inter Packet Delay 4000 ms Baud Rate k Inter Packet Delay j0 Base Address No of Packets 4 Base Address foxs20 No of Packets No of Nodes a o MyAddress fo No of Nodes R J MyAddress RxMode NON_PROMISCOUS MODE x RxMode NON_PROMISCOUS MODE 170 Mode BLOCKING TRANSMIT v bytes bytes 120 Mode BLOCKING TRANSMIT x Token IMMEDIATE TOKEN RELEASE Release Mode Direction Sender v Boot File Name C Lantrain BinsLanty13 exe ey OK Cancel Token IMMEDIATE TOKEN RELEASE Release Mode Direction Sender v Direction Sender v Boot File Name C Lantrain Bin Lantv13 exe E Boot File Name C Lantrain Bin Lantv13 exe E OK Cancel OK Cancel Release Mode MMEDIATE TOKEN RELEASE x Token Moge IMMEDIATE TOKEN RELEASE Direction Sender v Boot File Name C Lantrain Bin Lanty13 exe By OK Cancel Setting the Configuration menu Node id 0 on config menu 1 and Node id 0 on config menu 1 and 1 on config menu 2 1 on config menu 2 Baud Rate 8Kbps At both the config Baud Rate 8Kbps At both the con
37. ken Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Token Grabbed Successfully Txed 180 Successfully Txed 211 Successfully Txed 247 Avg Delay 47123 Successfully Txed 265 Avg Delay 44141 Avg Delay 50232 Avg Delay 37138 Node 0 TKNRING Sender Statistics B Node 1 TKNRING Sender Statistics i s Node 1 TKNRING Sender Statistics Ts Packets 211 Rx Packets 692 Ts Packets 247 Rix Packets 656 Tx Packets 180 Rix Packets Tx Packets 285 Rix Packets 616 0 0 0 Tx Bytes 21522 Frame Errors Tx Bytes 25194 Frame Errors Tx Bytes 18360 Fame Emos a Tx Bytes 27030 Frame Errors Tx Aborted 0 Tx Aborted 0 TxAborted 0 Be 70584 Rx Bytes 66912 N Fae AAR Pix Bytes 62832 Rx Bytes y Rx Bytes y Tx O Length 0 Tx O Length 0 Tx Q Length 0 Tx 0 Length 0 Collisions 0 Bx Q Length a Collisions 0 Rx Q Length 3 EEA a Fix Q Length Collisions 0 Rx Q Length 3 0 CRC Errors fo Missed Rx Packets 698 CRC Errors 0 Missed Ax Packets 652 CRC Errors el Missed Ax Packets 70500 CRCEnos 0 Missed Rx Packets 612 Save Freeze Refresh OK Save Freeze Refresh Save Freeze Refresh OK Save Freeze Refresh 7 Note down the readings once the experiment is completed 8 Repeat the above steps for various values of ta Benchmark Electronic Systems 22 Lan T Experiments Quick reference manual ver 1 3 3 Token Ring 9 Calculate the Practical offered load from the below given formula and plot the graph bet
38. le here Shel Test ib in the debug directory Copy this lib file from the debug directory to C Lantrain Lib directory and copy Ltulib h from the shell working directory here C Lantrain ShellTest to C Lantrain Include directory Linking the new Shell library with experiments Benchmark Electronic Systems 54 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 3 Developing Lan T applications j ame Copy the following files from the working directory of the newly created library here C Lantrain Src ShellTest to the experiment project directory say C Lantrain Src MAC the one you wish to use with the new user interface a a Res directory b b stdAfx cpp and stdAfx h Cc C resource h and resource hm d d lanT rc and lanT aps 2 2 Under Projects menu select Settings and select Link tab and link the library by changing the old library name to new library name alone say ShellV13 lib to ShellTest lib in the Object Library modules field Leave the Lantrn ib as unchanged in that field 3 3 Select RebulidAl from the Project menu to compile the experiment Now the experiment is ready to run with the new user interface Benchmark Electronic Systems 55
39. nce manual ver 1 3 3 Aloha 5 View the statistics window for results To view the statistics window click on L button Only Tx packets and collision count are taken into account for MAC calculation Node 0 ALOHA Sender Statistics y ode 1 ALOHA Sender Statistics Ts Packets 7 B55 Ay Packets ig Ts Packets BEZ Rs Packets 67524 Ts Bytes Eee E 7 f Tx Bytes Frame Errors e6910 Ts Aborted Io Te Aborted 0 Ax Bites Ax Bytes Tx O Length U E Tx Length 0 Collisions E51 eU Lengt Collisions E62 Ax U Length CRAC Errors 0 Missed Rx Packets LAL Eno 0 Missed Fix Packets l Save Freeze Refresh Save Freeze Refresh Tx Packets E36 Te Packets bag Ak Packets Tx Bytes IB Tx Bytes 54668 Frame Errors Te borted 0 Ts Aborted i i a Ax Buttes Aix Bytes J eoo eo T40 Length 0 2 Tx 0 Length 0 Collisions 635 Hix O Length calon e21 Rx O Length jo CRC Eror 9 Missed Ax Packets LAL Errors E Missed Rx Packets U save Freeze Refresh Save Freeze Refresh OK 6 Note down the readings once the experiment is completed 7 Repeat the above steps for various values of ta 8 Calculate the Practical offered load from the below given formula and plot the graph between the practical Offered load and Throughput Note You can also use the template for plotting the graph Please refer Appendix 1 to plot the graph using the template Benchmark Elec
40. ne eke Fa r a 4 Run the experiment by clicking button Ea or by choosing RUN gt Start from each application J button Only Tx packets and successfully transmitted packets are taken into account for CSMA CD calculation 5 View the statistics window for results To view the statistics window click on Benchmark Electronic Systems 12 Lan T Experiments Quick reference manual ver 1 3 e MAC Sender STOPPED File Sonrigen Earn Statisties Bone a tele lAvg IPD 39 succes stullby Txed 524 lwg Delay 190 Mode O0 CSMA CD Sender Statistics Ts Packets 5724 R Packets Tx Bytes 53448 Frame Errors T Aborted jo a 208 RAs Bates T O Length a Collisions jo As O Length 2 CAE Eror jo Kissed Ax Packets 400 Save Freeze Refresh Successfully Txed 524 J wg Delay 190 Hode 0 CSMA CD Sender Statistics T Packets 524 Ax Packets Te Bites 53448 Frame E roars Ts Aborted GE T Length a Collisions fe Rx Length CRC Errors E Missed Ax Packets 400 00 Save Freeze Refresh RAs Bytes l CSMA CD act MAC Sender STOPPED ont igure File Sonic Fairy cor Gi Hl 2 oe se Offered Load 2027 lAvg IPD 40 Successfully Txed 405 JAvgqg Delay 246 Mode 1 CSMA CD Sender Statistics Tx Packets 405 RAs Packets Tz Bytes jn s310 Frame Errors Tx Aborted jo 53346 RAs Bytes Ts Q Length E o Collisions fi As Q Length E CAC Errors E
41. on View Protocol CSMA CD Packet Length 1000 bytes Baud Rate 5K Inter Packet Delay 400 ms Base Address soc Ho of Packets No of Nodes i4 Mydddress fr Node Id i Duration i og 5 4 Rs Mode NON_PROMISCOUS MODE O Mode BLOCKING TRANSMIT OMode BLOCKING TRANSMIT Token Token Feleaze Mode Aae Mode IMMEDIATE TOKEN RELEASE Direction Sender z Direction Receiver Boot File Name C ALantrain Bin Lanty1 Jere E Boot File Name C 4Lantrain Bin Lantv1 3 888 is IMMEDIATE TOREN RELEASE is Setting the configuration menu Node id Node id OO OO 8Kbps At both the 8Kbps At both the config menu and NEU config menu and NEU Duration 100s Duration 1005 Direction Sender Direction Receiver No of packets No of packets Note The No of Packets parameter defines the window size 100s 3 Set the Inter Packet Delay to 400msecs 4 Click OK button and Download the driver to the NIU using the BOOT button command Booting from any one of the applications is enough Benchmark Electronic Systems 30 Lan T Experiments Quick reference manual ver 1 3 3 Sliding Window Go Back N 5 Run the experiment by clicking button Ea or by choosing RUN gt Start from each application 6 Set the Timeout Value to 1500 ms PC 1 SENDER PC 2 RECEIVER AURETA slu W 118 E 2 Node 0 CSMA CD Sender Statistics Ta Packets 70 Rix Packets 70 Ts Bytes 70140 Frame Errors 0 Seqno Sent 3 TxAb
42. orted 0 m Seqno Sent 0 Segno Sent 1 Tx O Length 0 Seang sente Collisions O AsO Length Segno Sent 3 TwBytes 90 Frame Enos 0 ee Sent 0 CRCEnors 0 Missed Rx Packets 0 T Aborted Doo a eqno Sent 1 Ru Bytes 740 Seqno Sent 2 TQ Lengh 0 Sedno Sent 3 Save Freeze Refresh x0 Length r Seqno Sent 0 Colson moo RxQLengh 0 Seqno Sent 1 Seqno Sent 2 CRC Enos 0 Missed Ax Packets 0 Seqno Sent 3 Seqno Sent 0 Save Freeze Rehesh OK Seqno Sent 1 all snc EA Successfully Transmitted 68 Retransmitted Count 0 Node 0 CSMA CD Receiver Statistics K Rix Bytes Ta Packets 70 Rx Packets n sIn sen down Paint ar Stopped 7 Note down the no of successfully Transmitted Packets 8 Repeat the above steps for various time out values and plot the graph between timeout Value amp Throughput Find the optimum timeout value from the plot Note You can also use the template for plotting the graph Please refer Appendix 1 to plot the graph using the template 9 Explain why the throughput is less compared to CSMACD protocol Calculation of Practical Throughput Sum of Successfully Tx packets Packet Length 8 Duration of Experiment Data rate Benchmark Electronic Systems 31 Lan T Experiments Quick reference manual ver 1 3 3 Sliding Window Go Back N Model Tabulation Time out Successfully value in ms Tx packets Throughput 1000 oO oO 1500 3000 4000 2000 66
43. reference manual ver 1 3 3 Token Bus Calculation of the Offered load G Offered load N Number of nodes P Packet length in bits C Data rate in bits sec ta Inter packet delay in millisecs Model Tabulation G Offered X Practical Tx 1 Tx2 TX3 mez Load Throughput Avg Dela ieo00 7 7 9 5 Model Graph Chart Title Avg Delay 45000 40000 35000 30000 25000 2 20000 15000 10000 s5000 0 2 A od 0 6 Offered Load Throughput Throughput 0 8 0 6 04 0 2 0 Benchmark Electronic Systems 19 Lan T Experiments Quick reference manual ver 1 3 3 Token Rin Experiment 5 TOKEN RING gt To implement the token passing access in RING LAN Procedure 1 Click on the Token Bus icon lrs twice from the desktop 2 Click the Configuration button in the window in both the PC s PC 1 PC 2 22 LAN Trainer TokenRing a 0 lt SE LAN Trainer TokenRing a 0x SE LAN Trainer TokenRing fa m x SE LAN Trainer TokenRing fa E Configuration View E Configuration View Configuration View x Configuration View f Node Id 0 v Duration J Node Id 1 v Duration s 4 Nodeld 0 v Duration J Node Id 1 v Duration 100 100 100 Protocol RING v Packet Length Protocol RING v Packet Length 100 bytes Protocol RING v Packet Length 100 bytes Protocol RING v Packet Length 100 bytes 4 40 ms Baud Rate 8K v Inter Packet Delay 40 ms Baud Rate K Inter Packet Delay ao Ba
44. reliable data transfer between two nodes over an unreliable network using the stop and wait protocol Procedure LAN a 1 Click on the Stop amp Wait icon 22st from the desktop on both PCs 2 Click the Configuration button in the window in both the Pc s PC 1 SENDER PC 2 RECEIVER Configuration View Node Id 0 Duration hon E Mode Id E Duration Frotacal CSMA CD Facket Length jon bytes Protocol CSMA CD Packet Length Contiguration View i gg z i O00 bytes Baud Aate BK Baud Fate JEK Inter Packet Delay 40000 m Base Address maa Ho of Packets Ho of Modes 4 MyAddress e NON PROMISCOUS MODE BLOCKING TRANSMIT Ax Mode 0 Mode A Mode Inter Packet Delay 400 mz No of Packets 4 Ho of Nodes 4 MyAddress ooo NON PROMISCOUS HODE BLOCKING TRANSMIT gt Base Address 8 6 0 Mode Token IMMEDIATE TOKEN RELEASE Release Mode Receiver Boot File Name C 4_ sntrainsBinsLantv1 3 exe E Cancel Token IMMEDIATE TOKEN RELEASE Release Mode Sender Direction Boot File Name C Lantrain BinSLanty1 J ExE E Direction Setting the configuration menu CSMA CD CSMA CD Baud Rate 8Kbps At both the Baud Rate 8Kbps At both the config menu config menu and NEU and NEU aos Duration 1005 Direction Sender Direction Receiver SSS Benchmark Electronic Systems 25 Lan T Experiments Quick reference manual ver 1 3 3 Stop and Wait 3 Set the Inter Pack
45. rs Ts 4bored 0 Ax Bytes T Length fr Collisions 662 Rx O Length LAC Eroe 0 Missed Ax Packets sae Freeze Refresh By default the file get saved in the Desktop You can also save it in other location Organise all the files in a common location Open MS EXCEL Browse open xls file in c Lantrain Stat Say Lantrain Stat Aloha P100 ALOHAP100 xls Click Nodei sheet E1 Microsoft Excel ALOHA P100 xIs File Edit View Insert Format Tools Data Window Help Adobe PDF OSES 6 R Be B Afl a gt ana B Cc D E F G Tx Node1 Tx Node 2 Tx Node 3 Tx Node 4 G Offerec X Throughput 0 101 0 083 0 2 0 142 0 444 0 205 0 766 0 177 1 293 0 074 1 82 0 025 2 484 0 01 Offered Load Vs Throughput i x Throughput 0 1 3 Offered Load G z x z gt gt 84 0 Dell In Go to Data gt Refresh data Benchmark Electronic Systems 41 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 1 Graph Plot Procedure Ed Microsoft Excel ALOHA P100 xIs 8 File Edit View Insert Format Tools Data Window Help Adobe PDF Dee Sia Rieev e 4h mag ee D14 A T B 8000 Aloha Duration 100 Tx Bytes 2856 Aloha Duration 100 Tx Bytes 5304 Aloha Duration 100 Tx Bytes MAC PacketLength 100 ia N A Tx Packets 28 Oh MAC PacketLength 100 om O Tx Packets 52 MAC PacketLength 100 15 Tx Packets 3 115 MAC Packet
46. s Throughput X Throughput Throughput 1000 2000 3000 4000 Time Out Y Vs BER i i xj TamilBe Dell Ins fe P1000 ay how to i result J EA Microsoft Excel STOPRWAIT P1000 xls 8 File Edit View Insert Format Tools Data Window Help Adobe PDF OSHS SRSA SrA MB Po HRS K103 B 10 Tx Packets AZ Stop amp Wait 3 PacketLen Tx Packets 17 Stop amp Wait d PacketLen 7 gth 1000 53 gth 1000 1i Tx Packets 24 Stop amp Wait imn D PacketLen 53 gth 1000 2 Tx Packets CSMA CD Duration 100 Tx Bytes 6012 CSMA CD Duration 100 Tx Bytes 7014 CSMA CD Duration 100 Tx Bytes 53106 CSMA CD Duration 100 Tx Bytes 53106 CSMA CD Duration 100 Tx Bytes 53106 400 Tx Q Length 0 D IPD 400 Tx Q Length D 0 IPD 400 Tx Q Length D D IPD 400 Tx Q Length D 0 IPD 400 Tx Q Length 0 141 41 gt IN Time Out Ys X X Vs BER Ready start TERET TamilBe gt Dell Ins Sender C Data Rate 8000 Collisions Sender C Data Rate 8000 Collisions 8 Sender C Data Rate a000 Collisions 0 Sender C Data Rate 8000 Collisions 0 Sender C Data Rate 8000 Collisions 0 r TimeOut 1000 CRC Errors 8 D TimeOut 1500 CRC Errors 0 TimeOut 2000 CRC Errors 0 TimeOut _ 3000 CRC Errors 0 TimeOut 4000 CRC Errors
47. t the graph using the template Benchmark Electronic Systems 33 Lan T Experiments Quick reference manual ver 1 3 3 Sliding Window Go Back N with BER Model Tabulation Model Graph BER Vs Throughput X Throughput Actual X Throughput Benchmark Electronic Systems 34 Lan T Experiments Quick reference manual ver 1 3 3 Packet Transmission Experiment 10 PACKET TRANSMISSION LANT r 1 Click on the Pkt icon from the desktop of both the PC s 2 Click the Configuration button in the window in both the PC s PC 1 SENDER PC 2 RECEIVER Configuration View E Configuration View l Node Id o Duration 100 W Mode Id o Duration 100 Protocol ALOHA Packet Length 100 bytes Protocol ALO H Packet Length 100 bytes Baud Rate ok Inter Packet Delay Baud Fate ok af Inter Packet Delay 0 Base Address No of Packets 4 Base Address Ho of Packets 4 As Mode NOM _PROMISCOUS MODE Fis Mode NOM _PROMISCOUS MODE O Mode BLUCEING TRANSMIT O Mode BLOCKING TRANSMIT Token Token Release Mode IMMEDIATE TOKEN RELEASE Release Mode Direction Sender Direction Boot File Mame C Lantrain Bin LAN TY13 EXE l Boot File Mame C Lantrain BinsLanty1 Jere a Cancel Cancel Setting the configuration menu m No of Nodes 4 MyAddress No of Nodes 4 MyAddress 2 IMMEDIATE TOKEN RELEASE Nodeid id 0 Nodeid id Ani Rate tae a
48. tes Packet Length 1000 bytes Bit Delay O at NEU Bit Delay O at NEU Alx Direction Sender Direction Sender _ __ _ Benchmark Electronic Systems ZN Lan T Experiments Quick reference manual ver 1 3 3 Token Rin G is the generated load in the network N is the number of nodes participating in the network For example let us say that 4 nodes using 2 computers P is the packet length expressed in bits say 100 bytes 800 bits C is the data rate normally set as 8kbs which is selected in the NEU ta is the inter packet delay expressed in seconds the time interval between two consecutive packets generated So lets assume ta 40 milliseconds and substitute the above mentioned parameters in the Equation A which leads to G 10 Like wise assume various values of ta to generate offer loads in the range of 0 1 to 10 Substitute the value of ta in the configuration menu command 3 Click OK button and Download the driver to the NIU using the BOOT button Booting from any one of the applications is enough 4 Run the experiment by clicking button ED or by choosing RUN gt Start from each application Run the all the experiments at the same time 5 Set the Token Holding Time THT say 10000 ms 6 View the statistics window for results To view the statistics window click on button PC 1 PC2 ox 2 stoppep f ox stoppen ox 3 stoppen Token Grabbed Token Grabbed Token Grabbed To
49. tronic Systems 3 Lan T Experiments Quick reference manual ver 1 3 3 Aloha 9 Repeat the experiment for various values of Packet length Node Data rate Calculation of Practical Throughput X from the obtained readings Successfully transmitted packet by a node Tx Packets Collision Count Sum of Successfully Tx packet in all the nodes Packet Length 8 Duration of Experiment Data rate Calculation of Theoretical Throughput Calculation of Practical Offered load Sum of Transmitted packets in all the nodes Packet Length 8 Duration of Experiment Data rate Benchmark Electronic Systems 4 Lan T Experiments Quick reference manual ver 1 3 3 Aloha Model tabulation jee pa a 3 Sarena Yanna Maint Offered Load Throughput aa 0 08 800 54 48 43 60 0444 0 205 oig 100 10 1 4 10 1 82 10 025 000 40 4 jo jo j6 2484 001 000 Model Graph Offered Load Vs Throughput 5 Throughput Theoretical Throughput X 1 1 5 Offered Load G Benchmark Electronic Systems 5 Lan T Experiments Quick reference manual ver 1 3 3 CSMA Experiment 2 CSMA gt Implement the CSMA protocol for packet communication between a number of nodes connected to a common bus Procedure LAN Ea os 1 Click on the MAC Experiment icon Lmac twice from the desktop on both PC s 2 Click the Configuration button in the window in both the PC s PC 1 PC 2
50. ts Moof Nodes 4 Mudddress ic RAs Mode INON_PROMISCOUS MODE O Mode IBLUCKING TRANSMIT al Token Release Mode Direction Sender Boot File Marne C Lantrain BinsLantv 1 Axe E Cancel IMMEDIATE TOKEN RELEASE h Config View displays the configuration dialog box where all the parameter values are displayed Node Id Specify that that particular application experiment window should be as node 0 or 1 This is the one that differentiates the two applications in the same PC Protocol Specify the MAC Protocol that NIU has to emulate By default it is set to Aloha Baud Rate Specify the data rate between 8Kbps and 1Mbps Only for CSMA CD and Ring mode this needs to be set both in the Application window and the NEU For Aloha and CSMA settings in NEU are sufficient No of Nodes Specify the number of nodes in the network that are used to do Token Ring experiment This field may be used for other purposes while writing codes for suggested experiments in exercise also Duration Specify the duration of the experiment in seconds Packet Length Specify the length of packets that are used in the experiment Can be set toa maximum of 1000 bytes Benchmark Electronic Systems 48 Lan T Experiments Quick reference manual ver 1 3 3 Appendix 2 Configuration menu details Inter Packet Delay Specify the inter packet delay that is equivalent to the inter packet arrival time based on the calculation suggested
51. ts and calculate the throughput Calculation of throughput is same as explained in the previous expt a Repeat the Experiment by setting different BER in the NEU Use the values to plot the graph between BER Vs Throughput Note You can also use the template for plotting the graph Please refer Appendix 1 to plot the graph using the template Benchmark Electronic Systems 28 Lan T Experiments Quick reference manual ver 1 3 3 Stop and Wait with BER Model Tabulation 10 10 Tx packets Throughput Throughput 9 049 04675 oO FO Model Graph 0 6 0 5 0 4 0 3 0 2 Throughput 0 1 BER Vs Throughput X Throughput Actual X Benchmark Electronic Systems 29 Lan T Experiments Quick reference manual ver 1 3 3 Sliding Window Go Back N Experiment 8 SLIDING WINDOW GO BACK N Aim Provide reliable data transfer between two nodes over an unreliable network using the sliding window go back N protocol Procedure LAH ay 1 Click on the Sliding Window GBN icon Snn from the desktop on both PCs 2 Click the Configuration button in the window in both the Pc s PC 1 SENDER Contiguration View Mode Id o Y Duration i O0 Protocol cs MACO Packet Length 1000 Baud Rate Inter Packet Delay 400 m Base Address eH No of Packets 4 Ho of Nodes 4 Mudddress f As Mode NON PROMISCOUS MODE PC 2 RECEIVER Configurati
52. ud Rate Kk Inter Packet Delay 40 ms Baud Rate Kk Inter Packet Delay Base Address Jox320 No of Packets 4 Base Address fox320 No of Packets Mo Base Address fox320 No of Packets 4 Base Address 0320 No of Packets mo o Noof Nodes 4 MyAddress fo NoofNodes 4 MyAddress oO NoofNodes 4 MyAddress 0 NoofNodes 4 MyAddress fo RxMode NON_PROMISCOUSMODE gt RxMode NON_PROMISCOUSMODE S_ RxMode NON_PROMISCOUSMODE RxMode NON_PROMISCOUS MODE I O Mode BLOCKING TRANSMIT xl I O Mode BLOCKING TRANSMIT I O Mode BLOCKING TRANSMIT l I O Mode BLOCKING TRANSMIT Token IMMEDIATE TOKEN RELEASE X Token IMMEDIATE TOKEN RELEASE X Token IMMEDIATE TOKEN RELEASE X Token IMMEDIATE TOKEN RELEASE x Release Mode Release Mode Release Mode Release Mode Direction Sender v Direction Sender w Direction Sender v Direction Sender v Boot File Name C Lantrain BinSLANTV13 EXE A Boot File Name C Lantrain Bin LANTV13 EXE fe Boot File Name C Lantrain Bin LANTV13 EXE ee Boot File Name C Lantrain Bin LANTV13 EXE ps OK Cancel Cancel OK Cancel Cancel Duration of the experiment to run Duration of the experiment to run Setting the configuration menu 0 on config menu 1 and 0 on config menu 1 and 1 on config menu 2 1 on config menu 2 RING RING Baud Rate 8Kbps At both the config Baud Rate 8Kbps At both the config menu and NEU menu and NEU Duration 1005 Duration 100s Packet Length 1000 by
53. ween the practical Offered load and Throughput Note You can also use the template for plotting the graph Please refer Appendix 1 to plot the graph using the template 10 Repeat the experiments for various values of Packet length Node Data rate 11 Repeat the above steps while running the experiment set the BER to 107 in the NEU or try to stop one of the nodes and observe the behavior and explain the same Calculation of Practical Throughput X from the obtained readings Sum of Tx packet in all the nodes Packet Length 8 Duration of Experiment Data rate Calculation of the Offered load G Offered load N Number of nodes P Packet length in bits C Data rate in bits sec ta Inter packet delay in millisecs Benchmark Electronic Systems 23 Lan T Experiments Quick reference manual ver 1 3 3 Token Rin Model Tabulation Offered X Nodel1 Node2 Node3 Node4 Load Throughput ales es e a e DOE E E asa oe sess a 2 a s o DE A E A a 37720 25 Model Graph G Vs X 3 08 2 0 6 3 GVs O 0 4 E 0 2 0 0 1 2 3 Offered Load Delay 40000 30000 20000 10000 Avg Delay Avg Delay 0 2 0 4 0 6 0 8 1 Throughput Benchmark Electronic Systems 24 Lan T Experiments Quick reference manual ver 1 3 3 Stop and Wait Experiment 6 STOP amp WAIT Aim Provide
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