To simulate a Ring-Mesh Hybrid Topology project in OMNeT++, you will require following these steps, to get further simulation guidance we will help you with best project ideas and topics:
Steps to Simulate Ring Mesh Hybrid Topology Projects in OMNeT++
- Install OMNeT++ and INET Framework
First, make sure that OMNeT++ and the INET framework are installed. INET deliver essential networking models and protocols for simulations.
- Download and install OMNeT++ from the OMNeT++ website.
- Clone the INET framework repository and compile it with OMNeT++.
- Define the Network Topology
In OMNeT++, the network topology is defined in a NED (Network Description) file. Here’s an framework of how to generate a Ring-Mesh Hybrid topology:
2.1 Ring Topology
In a ring topology, each node is asssociated to two other nodes, forming a closed loop. Here’s how we can describe it in NED:
network RingTopology
{
submodules:
node[6]: Node;
connections:
node[0].pppg++ <–> node[1].pppg++;
node[1].pppg++ <–> node[2].pppg++;
node[2].pppg++ <–> node[3].pppg++;
node[3].pppg++ <–> node[4].pppg++;
node[4].pppg++ <–> node[5].pppg++;
node[5].pppg++ <–> node[0].pppg++;
}
2.2 Mesh Topology
In a mesh topology, each node is associated to every other node. In the hybrid case, we can integrate both. Here’s a basic instance of adding mesh connections among a few nodes in the ring:
network RingMeshHybrid
{
submodules:
node[6]: Node;
connections:
node[0].pppg++ <–> node[1].pppg++;
node[1].pppg++ <–> node[2].pppg++;
node[2].pppg++ <–> node[3].pppg++;
node[3].pppg++ <–> node[4].pppg++;
node[4].pppg++ <–> node[5].pppg++;
node[5].pppg++ <–> node[0].pppg++;
// Adding mesh connections
node[0].pppg++ <–> node[3].pppg++;
node[1].pppg++ <–> node[4].pppg++;
node[2].pppg++ <–> node[5].pppg++;
}
- Configure INET Modules
We will require setting up the Node modules that can be routers or hosts, to help you to the protocols that need to simulate. For example:
simple Node
{
gates:
pppg[]; // point-to-point connections
}
- Simulation Configuration in omnetpp.ini
Configure your simulation parameters in the omnetpp.ini file:
network = RingMeshHybrid
sim-time-limit = 100s
**.node[*].ppp[*].typename = “PPPInterface” # Specify network interface
**.node[*].ppp[*].mtu = 1500
# Enable routing protocol
*.node[*].hasIPLayer = true
*.node[*].routingTable.routerId = “auto”
*.node[*].routingTable.ipv4RoutingTable = true
- Compile and Run the Simulation
- Compile the project using OMNeT++.
- Run the simulation and envision the outcomes using OMNeT++’s GUI or gather performance data for evaluation.
- Optional: Visualizing the Topology
We can envision the hybrid topology by configuring parameters in the omnetpp.ini file:
*.node[*].ppp[*].displayString = “b=50,50,oval” // display options for nodes
We offered the basic to advance essential information that helps you understand the core concepts on how to simulate and evaluate the Ring-Mesh Hybrid Topology projects using the tool of OMNeT++. More information regarding this process will be offered later.
