To Simulate the Least Cost Routing projects in OPNET Modeler has contains to configure a network in which routers to measure the most efficient like as minimum cost paths among nodes according on precise connection parameter metrics such as bandwidth, latency or other costs. OSPF (Open Shortest Path First) is generally used for least-cost routing and to choose the routes according on connection costs. Here’s how to set up a Least Cost Routing simulation in OPNET:
Steps to Simulate Least Cost Routing Projects Using OPNET
- Set Up the OPNET Project
- Open OPNET Modeler and build a new project to devoted the least-cost routing.
- State the workspace and replication parameters metrices like as replication period and main metrics to follow a path of selection, latency, and network utilization.
- Design the Network Topology
- To generate a network topology through routers, switches, and endpoint nodes (clients and servers).
- Connect routers through several connection among them to assigns the modification of paths that ensure they routing algorithm to choose the least-cost path.
- Dwelling clients and servers in various subnets to follow on how the routing protocol measures paths across several hops.
- Enable a Least Cost Routing Protocol
- To choose a routing protocol that handles they least-cost path selection:
- OSPF (Open Shortest Path First): A link-state protocol that choose a path according on connection costs that creates it model for least-cost routing.
- EIGRP (Enhanced Interior Gateway Routing Protocol): utilized a related parameter metrices like as bandwidth and latency and could be setting to prioritize least-cost paths.
- Ensure the selected routing protocol on each router:
- For OSPF: To setting a every router’s properties to ensure the OSPF and set connection costs to signify the cost parameter metric.
- For EIGRP: Assure EIGRP to setting the parameter metric weights for sample, delay or bandwidth to effect route selection.
- Set Link Costs for Least-Cost Path Selection
- Describe the network costs according on your selection parameter metric for instance bandwidth, delay, or reliability. In OSPF that could be directly specified as a link cost.
- To setting every connection parameter such as bandwidth and delay to replicate several cost values with the network. Minimum cost values should be signifying the further necessary like as a faster or higher bandwidth connection.
- Add Application Traffic
- To replicate the real congestion to setting an application traffic for samples HTTP, FTP, VoIP among clients and servers.
- In Application Config and Profile Config:
- Describe the traffic features like as file size, page request frequency, and session duration.
- To assign the profiles for client and server nodes to create a consistency data flows that would be utilized the least-cost paths chosen through the routing protocol.
- Introduce Background Traffic for Congestion Analysis (Optional)
- To validate on how to least-cost routing performs under various loads enhance background traffic on general connections to replicate network traffic.
- Background traffic like as video streaming or large file transfers can be supports, they follow on how least-cost routing adapts after specific connection become congested.
- Configure Simulation Parameters for Routing Metrics
- Ensure the parameter metrics gathering for core at least-cost routing parameters metrices like as route changes, link utilization, convergence time, path delay, and packet delivery.
- Assuring they log of OSPF or EIGRP-specific events like as link state advertisements (LSAs) or routing table bring up-to-date to track the protocol’s response to network changes.
- Run the Simulation
- Initializes the replication and track on how the routing protocol measures and chooses the least-cost paths.
- To observe the routing table, bring up-to-date and traffic flows to validate that traffic is routed laterally the lowest-cost paths based on your connection settings.
- Analyse Results
- Next the replication utilized their OPNET’s analysis tools and estimate the least-cost routing performance:
- Path Selection and Convergence Time: To calculate on how long it takes for the network to converge on the least-cost paths and confirm that routes assign through the specified connection costs.
- Link Utilization and Load Balancing: Checked on how well fine tuning the least-cost routing and distributes traffic for balancing loads through network links.
- Latency and Delay: To monitor latency laterally the least-cost paths to validate the effectiveness of routing and classify many ranges in which latency affect performance.
- Packet Delivery and Reliability: Analyse their packet delivery rates and consistency to enable that least-cost routing enhances data delivery through the network.
Through this report, you can completely concentrate on how to simulate least cost routing protocols in the network with the help of OPNET by essential the routing protocol into the simulation. You can refer the samples for references.
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