How to Start Daisy Chain Topology Projects Using OMNeT++

To stimulate the Daisy Chain Topology Simulation in OMNeT++ has includes the linked the nodes in a linear sequence, in which every node is connected to its adjacent nodes. This topology is generally used in the environment in which the data flows through the integrate nodes for reach the destination.

Here’s a step-by-step guide to creating a Daisy Chain Topology Project in OMNeT++:

Steps to Start Daisy Chain Topology Projects Using OMNeT++

  1. Understand Daisy Chain Topology
  • Definition: In a daisy chain topology, every node is linked the two other nodes for sample except for the end nodes, forming a linear chain.
  • Characteristics:
    • The data traverses through integrate the nodes for reach the destination.
    • There is a Simple architecture nevertheless may be establish the delays with improve the node count.
    • Failure for a single node or connection can disrupt the transmission.
  • Applications:
    • The extension is a Simple LAN.
    • It used the linear sensor networks.
  1. Set Up OMNeT++ and INET Framework
  • Install OMNeT++: Download and install OMNeT++ from the official website.
  • Install INET Framework:
    • The INET delivers the components for wired and wireless communication.
  1. Define Project Scope

Step 3.1: Goals

  • Replicate the data flow for a daisy chain topology in which the packets traverse by the several integrate the nodes.
  • Estimate the parameter metrics such as:
    • Packet delivery ratio.
    • Throughput.
    • Latency.

Step 3.2: Metrics

  • Latency: The normal time taken for the packets to transverse the network.
  • Packet Delivery Ratio (PDR): For successfully delivered packets the rate of PDR.
  • Throughput: The number of throughput is data transferred with the network.
  1. Design the Daisy Chain Topology

Describe the network by nodes are connected in a linear sequence.

Example .ned File:

network DaisyChainTopology {

submodules:

node[5]: StandardHost;  // Nodes in the daisy chain

connections:

node[0].ethg++ <–> EthernetLink <–> node[1].ethg++;

node[1].ethg++ <–> EthernetLink <–> node[2].ethg++;

node[2].ethg++ <–> EthernetLink <–> node[3].ethg++;

node[3].ethg++ <–> EthernetLink <–> node[4].ethg++;

}

  1. Configure Node Behavior

Step 5.1: Data Transmission

Used for the INET’s UdpBasicApp we replicate the congestion from the first node such as source to the last node like as destination, passing by the intermediate nodes.

Example .ini File Configuration:

[Config DaisyChainTopologySimulation]

network = DaisyChainTopology

# Traffic configuration for node[0] (source)

**.node[0].numApps = 1

**.node[0].app[0].typename = “UdpBasicApp”

**.node[0].app[0].destAddress = “node[4]”

**.node[0].app[0].startTime = 1s

**.node[0].app[0].sendInterval = uniform(1s, 2s)

**.node[0].app[0].packetLength = 512B

# Traffic configuration for node[4] (destination)

**.node[4].numApps = 1

**.node[4].app[0].typename = “UdpSink”

# Simulation time

sim-time-limit = 50s

  1. Run and Visualize the Simulation
  • Run the Simulation: Establish the replication for the OMNeT++ process.
  • Monitor Behavior:
    • The Packets flow from node [0] to node [4], passing through integrate the nodes for follow on the behavior.
  1. Analyze Results

Metrics to Evaluate:

  1. Latency:
    • Calculate the time taken for packets we traverse from node [0] to node [4].
  2. Packet Delivery Ratio (PDR):
    • Estimate the rate for successfully delivered packets for a PDR.
  3. Throughput:
    • Estimate the data transfer rate in the throughput.

Visualization:

  • Used envision for OMNeT++’s built-in tools we monitor on the packet flows and node interactions.
  1. Enhance the Project

Step 8.1: Bidirectional Communication

  • Setting the bidirectional congestion among the nodes.

Example Configuration for Bidirectional Traffic:

# Traffic configuration for node[4] sending back to node[0]

**.node[4].numApps = 1

**.node[4].app[0].typename = “UdpBasicApp”

**.node[4].app[0].destAddress = “node[0]”

**.node[4].app[0].startTime = 3s

**.node[4].app[0].sendInterval = uniform(1s, 3s)

**.node[4].app[0].packetLength = 512B

Step 8.2: Simulate Link Failures

  • Establish the connection or node failures we follow on their effect on the network.

Step 8.3: Wireless Daisy Chain Topology

  • Used the INET’s wireless components and we replicate the wireless version for the daisy chain.

Example Wireless Configuration:

*.node[*].wlan.radio.channelNumber = 11

*.node[*].wlan.snrThreshold = 10dB

*.node[*].wlan.txPower = 20mW

*.node[*].mobility.typename = “StationaryMobility”

Step 8.4: Dynamic Traffic

  • Enhance the various congestion flows among the several pairs of nodes.

Step 8.5: Scale the Network

  • Improve the number of nodes we create a larger daisy chain for network scale.
  1. Example Output
  • Before Enhancements:
    • The data flows from the source to the destination through integrate the nodes, by fixed the latency and throughput.
  • After Enhancements:
    • The connection failures or bidirectional congestion establish the variability in performance metrics.

Would you like help implementing specific features, such as fault tolerance, bidirectional communication, or performance analysis in the daisy chain topology?

This project idea deliver wide range of implementations using the Daisy Chain Topology in OMNeT++, helping you discover the contexts for the topology performance in a setting. Should you have any inquiries about this project, we refer to the additional manual.