simulate and analyze the performance of a Weighted Round Robin (WRR) or Class based Queuing (CBQ) algorithm.

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شرح پروژه

The objective of this project is to model, simulate and analyze the performance of a Weighted Round Robin (WRR) or Class based Queuing (CBQ) algorithm. Please refer to the relevant lecture slides and the supplementary material [1] describing the WRR/CBQ algorithm. [1] - https://www.cse.iitb.ac.in/~varsha/allpapers/packet-scheduling/wfqJuniper Network Topology: For modelling, implement the client-server topology with 4 clients sending data to a server via the switch as shown in the figure below: Hint: Reference to the Dyna sample example Communication Behaviour: The clients send packets to the server via the switch. The switch is able classify the packets from the different clients and assign them to the respective queue. The scheduler function is then able to serve the respective queues by visiting them in a round-robin manner but the service time of the scheduler for each queue should be equivalent to the weight assigned to that queue. Each client is sending fixed-size packets at different rates towards the server independent of each other. Switch behaviour: The switch is supposed to take the data traffic from the 4 clients and forwarding them to the Server. The forwarding should be based on WRR/CBQ algorithm. The switch model should implement the following functions: 1. Queuing function: Implement as many queues as the clients (i.e., 4 in our case), where each queue should be designated to queue the packets from the respective clients. Use the Omnet’s cQueue class for implementing such a queue. (HINT: Look at the Switch design of the DYNA sample example) 2. Classification Function: This function should be able to identify the traffic from the clients based on the client Id (e.g., based on the source address in the packet) and queue the packet in the correct queue. For example, packets from Client 1 should be queued in queue 1 (Q1), packets from Client 2 should be queued in queue 2 (Q2), and so on. 3. WRR/CBQ Scheduler function: This scheduler function should be based on the WRR/CBQ principle, where the scheduler is able to process the respective queues in a round-robin manner but with specific weights assigned to them.

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