How to Start Intra Domain Protocol Projects using OMNeT++

To create a project for replicating the Intra-domain routing protocols like as OSPF, RIP, EIGRP, or other intra-domain protocols using OMNeT++ ha includes for different steps: configure the environment for building a network model and setting the routing protocols process the replication and analysing outcomes.

Steps to Start Intra Domain Protocol Projects using OMNeT++

  1. Install OMNeT++ and the INET Framework

OMNeT++ is an open-source discrete event replication for framework used the modelling the transmission in networks. The INET framework is a popular extension we OMNeT++ which offers several the pre-built models for network protocols has involves the intra-domain routing protocols such as RIP, OSPF, and EIGRP.

Installation Steps:

  • Download and install OMNeT++.
  • Observe the instructions for your operating system such as Windows, Linux, or macOS.
  • Install INET we offer the necessary modules for routing protocols and networking features. we can install it by either cloning it from GitHub or using OMNeT++’s IDE installation features:

git clone https://github.com/inet-framework/inet.git

Follow the INET documentation for setting it up in OMNeT++.

  1. Set Up Your OMNeT++ Environment
  • Open the OMNeT++ IDE.
  • Builds a new project:
    • Go to File > New > OMNeT++ Project.
    • Offers a name for your project such as “IntraDomainRouting”.
    • Improve the INET framework to the project.
  1. Design the Network Topology (NED File)

The later procedure is to describe the network topology in OMNeT++ using NED files. A NED file describes the structure of the network, specifying the modules such as routers, hosts, and connections in the replication.

Example Network Topology with Routers for Intra-Domain Routing:

network IntraDomainNetwork

{

submodules:

router1: Router;

router2: Router;

router3: Router;

host1: Pc;

host2: Pc;

connections:

host1.eth[0] <–> EthernetLink <–> router1.eth[0];

host2.eth[0] <–> EthernetLink <–> router2.eth[0];

router1.eth[1] <–> EthernetLink <–> router2.eth[1];

router2.eth[2] <–> EthernetLink <–> router3.eth[0];

host2.eth[0] <–> EthernetLink <–> router3.eth[1];

}

  • Here the Router signifies a router and Pc characterizes a computer or host.
  • Ethernet Link describe the connection among the modules.
  • The routers are interconnected and replicating an intra-domain network for sample a single autonomous system.
  1. Configure Routing Protocol (RIP, OSPF, or EIGRP)

OMNeT++ and INET provide a built-in support for multiple routing protocols commonly used the intra-domain routing:

RIP: Routing Information Protocol. OSPF: Open Shortest Path First. EIGRP: Enhanced Interior Gateway Routing Protocol.

We can choose and setting the routing protocol we need to replicate. Let’s consider how to configure OSPF and RIP as examples:

Example for Configuring RIP Routing in .ini File: In the omnetpp.ini setting a file, we can ensure the routing protocol for every router:

[General]

network = IntraDomainNetwork

sim-time-limit = 100s

**.router1.routingTableClass = “RIP”

**.router2.routingTableClass = “RIP”

**.router3.routingTableClass = “RIP”

Example for Configuring OSPF Routing in .ini File:

[General]

network = IntraDomainNetwork

sim-time-limit = 100s

**.router1.routingTableClass = “OSPF”

**.router2.routingTableClass = “OSPF”

**.router3.routingTableClass = “OSPF”

  • The above lines enable RIP or OSPF as the routing protocol for each router.
  • You can also configure the OSPF parameters such as area ID, hello interval, and others in the .ini file.

Example for EIGRP Configuration:

[General]

network = IntraDomainNetwork

sim-time-limit = 100s

**.router1.routingTableClass = “EIGRP”

**.router2.routingTableClass = “EIGRP”

  1. Assign IP Addresses and Network Configuration

In OMNeT++, we can allocate the IP addresses we every device are state the IP subnets and setting the interfaces. This can be done in the .ini configuration file or directly in the .ned file.

Example of IP assignment in omnetpp.ini:

**.router1.ipv4.address = “192.168.1.1”

**.router2.ipv4.address = “192.168.2.1”

**.router3.ipv4.address = “192.168.3.1”

**.host1.ipv4.address = “192.168.1.2”

**.host2.ipv4.address = “192.168.2.2”

  • Allocate the every router and host a unique IP address for enable the correct network topology.
  1. Add Routing Tables and Fine-Tune Parameters

We may also require to setting the routing tables and other protocol parameters. For instance, OSPF and RIP routers use Routing Information Bases (RIB), and we can adjust their operation through parameters in the .ini file.

Example for OSPF parameters:

**.router1.ospf.area = 0

**.router1.ospf.helloInterval = 10s

**.router2.ospf.area = 0

**.router2.ospf.helloInterval = 10s

Example for RIP parameters:

**.router1.rip.updateInterval = 30s

**.router2.rip.updateInterval = 30s

  1. Run the Simulation

Later the setting network topology and routing protocol we can start the replication:

  • Click the Run in OMNeT++.
  • OMNeT++ will start the replication and we can display the network’s behaviour.
  • We can visualize the routing protocol operations has including on how the routers alter the routing tables and route discovery.
  1. Monitor and Analyze Results

OMNeT++ offers the different ways to follow and analyse the replication outcomes:

  • Canvas: Visualize the packet transmission of routing protocol operations and packet flow.
  • Result Analysis: OMNeT++ creates the brief logs that we can analyse the performance metrics like:
    • Routing convergence time
    • Packet loss
    • Throughput
    • Routing table updates

We analyse the outcomes you can setting the Result Analysis Tool in the omnetpp.ini file.

Example:

[General]

output-vector-file = “results.vec”

output-scalar-file = “results.sca”

  1. Extend the Simulation with Advanced Features

After your initial setup we can extend the replication and discover the further advanced aspects:

  • Routing Metrics: Setting the additional routing parameter metrics such as link costs or delay.
  • Network Failures: Replicate the connection or node failures and follow on how the routing protocols handle convergence.
  • Multiple Areas in OSPF: Intended for OSPF and we can replicate the network with multiple areas and setting the inter-area routing.
  • Authentication: Discover the security features in routing protocols such as OSPF authentication.
  1. Test and Compare Routing Protocols

If you need to associates the performance of several intra-domain protocols, we can run the replications through RIP, OSPF, and EIGRP in the similar network setting and analyse their performance in terms of convergence time for stability and network overhead.

By following these steps, you can set up and simulate intra-domain routing protocols like RIP, OSPF, and EIGRP using OMNeT++. This allows you to explore how different protocols handle routing within a network and gain valuable insights into their performance under different conditions.

In the conclusion, we clearly discussed about the Intra domain protocol and how the protocol model will perform in OMNeT++ scenarios that were explained here. Also, we elaborate further information regarding protocol.

We also work with intra-domain routing protocols such as OSPF, RIP, and EIGRP. If you encounter any challenges, phdprojects.org is here to be your top partner, providing you with the best guidance. Check out our Intra Domain Protocol Projects using OMNeT++.