2×2 Switch Simulation in Matlaab

22 piece of ground Switch pretending Using Matlab interim Report line, output- pilot program, queuing march, analytical analysis, assumption Student realise Deniz Ozdemir Email emailprotected qmul. ac. u Supervisor Dr John Schormans Deniz Ozdemir ec09502 interim report Contents Page 1. 1 plan 1. 2 Methodology 1. 3 Objectives 2. Background 2. 1 Performance Evaluation 2. 1. 1 measuring rod 2. 1. 2 Analysis/ mannikin 2. 2 mail boat Switched Ne twainrks 3. induction 4. Theory 4. 1 Queuing Theory 4. 1. 1 Queuing mould 4. 1. 1. 1 Concept of a queuing model 4. . 2 Queuing theory notation 4. 1. 3 The M/M/1 Queue 4. 1. 4 The M/D/1 Queue 4. 2 Switching 4. 2. 1 Switching Concept 4. 2. 1. 1 Internal sleeper Blocking 4. 2. 1. 2 Output Port Contention 4. 2. 1. 3 Head Of Line Blocking 4. 2. 2 Time Between Arrivals 4. 2. 3 Counting Arrivals 4. 2. 4 The Queuing Behaviour Of softw ares In Output Buffers 4. 2. 4. 1 conniving The State Probability Distribution 5. Analytical / poser Results 5. 1 22 Switch 5. 1. 1 Analytical Results 5. 1. 2 Simulation Results 5. 2 44 Switch 5. 2. 1 Analytical Results 5. 2. Simulation Results 5. 3 88 Switch 5. 3. 1 Analytical Results 5. 3. 2 Simulation Results 5. 4 1616 Switch 5. 4. 1 Analytical Results 5. 4. 2 Simulation Results 6. Conclusion 7. Project Management 7. 1 Risk Analysis 7. 2 Gant Chart 8. References 9. vermiform appendix 2 2 2 2 2 2 2 3 3 3 3 3 4 5 5 7 9 9 9 9 11 11 13 14 14 15 15 15 17 19 19 20 22 22 23 25 25 26 28 28 28 28 28 29 1 Deniz Ozdemir ec09502 Interim report 22 Packet Switch Simulation Using Matlab 1. Aim clear a simple 22 packet boat tilt simulation utilize Matlab and study its slaying 1. 2 Methodology ?Test out simulation on fundamental 22 switch element. ? Then expand it. 1. 3 Objectives ? Learn near Matlab. ? Learn about simulation. ? Build simple assay model and try it. ? Build 22 element in Matlab. ? get into results. ? Process results. ? Simulate any new results required. ? Write report. 2. Backgr ound 2. 1 Performance Evaluation When vanes are designed, the goal of the movement evaluation is that to determine the best effect of the equipment sed. Methods for surgery evaluation are measurement techniques , analysis and simulation. 3 2. 1. Measurement For measurement methods real networks are used for experimentation. The avail of direct measurement of network action is that no detail of network operation is excluded but jazz hard to test performance limits. Customers wont like it when you crash the transcription. 3 2. 1. 2 Analysis/ Simulation In comparing analysis and simulation, the main factors to construe are the accuracy of results, the time to produce results, and the boilers suit speak to of using the method. Advantage of analytical solutions is that they are quite good fit to reality and produces results quickly. just assumptions required to define equations and parameters and they can be rattling complex. Simulation provides system representation to requir ed precision. just simulation can be time and cost demanding. 3 2 Deniz Ozdemir ec09502 Interim report 2. 2 Packet Switched Networks In a packet switched network only lymph nodes interconnected by directed links. Packets are routed independently. Packets present the network at a specific node where they whitethorn be queued in a buffer to wait for an outgoing channel to become free.This go on in a skip over by hop manner until the packets finally arrive at their destination. Packets may arrive the same destination by victorious different routes. That increases efficiency of transmission resources. Also queued packets in the buffer will cause a uncertain delay and throughput, depending on traffic load. Basic network is shown in figure 1. 1 Figure 1 Packet Switched Network 3. Introduction Contention in a switch affects the performance of a switch. To prevent this roughly switching techniques are developed. One of the most usual switching techniques is the one with output-buf fered switch.In this report, queuing process of performance evaluation, for such a switch is done analytically first than simulation analysis is done using Matlab. In the end of the report comparison of two results is done. 4. Theory 4. 1 Queuing Theory Analysis of the queuing process is basic and essential part of the performance evaluation. Because queues are form in a network when there is a high demand on control resources. 4. 1. 1 Queuing Model Packets arrive at a queuing system to be served for a certain time. If emolument is not immediately available they wait for utility in a storage area (buffer).after a certain length of time, they are served and start out the system. Basic queuing system is shown in figure 2. 3 Deniz Ozdemir ec09502 Interim report Figure 2 stately diagram for a single server queuing system 3 Also basic queuing relationship is shown in get across below General q=?. W=?. = + Table 1 Basic queuing relationship Single Server ? =?. q=W+? 4. 1. 1. 1 Conc ept Of A Queuing Model allow N (t) be the number of packets waiting in the queue plus the one who is being served (1,2,3). A series of packets arrive at instants T1