To simulate the Hot Potato Routing using OPNET Modeler has series of steps that contains to set up a network in which routers target to send packets to the nearest exit point, to reduce the time a packet stays in the originating network. Hot potato routing is also named as a deflection routing or shortest exit routing, which is generally utilized within large networks such as ISPs in which traffic is managed off to external networks as rapidly as possible preventing internal congestion. Even though OPNET does not need a built-in hot potato routing protocol then it can execute by setting up shortest-path routing along with a concentrate on leaving nodes.
Steps to Simulate Hot Potato Routing Projects in OPNET
- Set Up the OPNET Project
- Launch OPNET Modeler then make a new project tailored for hot potato routing.
- Describe the workspace that contains simulation duration and parameters to seize like packet delay, hop count, and link utilization.
- Design the Network Topology
- Make a network including routers, switches, and endpoint nodes like clients and servers that contains:
- Internal Routers: Routers in the primary network, which forward traffic to leaving points.
- Exit Routers (or Gateways): Routers on the network boundary, which perform like gateways to external networks or destinations.
- Make sure from internal nodes to exit routers that containing several paths. This configuration will permit the packets to be routed to the nearest exit depends on the distance or delay.
- Implement Shortest Path Routing with Exit Preference
- set up a shortest path routing protocol such as OSPF (Open Shortest Path First) or EIGRP (Enhanced Interior Gateway Routing Protocol) as hot potato routing includes to manage off packets as rapidly as possible:
- OSPF: Allow OSPF at every router and configure link costs since internal nodes contain a shorter path to neighbouring exit routers.
- EIGRP: If utilizing EIGRP then set up parameters such as bandwidth and delay creating paths to the more fascinating nearest exit routers.
- Modify Link Costs: Configure higher link costs for paths directing deeper toward the network and set up lower costs for links leading to the neighbouring exit routers. This set up promotes packets to send to the closest exit when possible, to replicate the performance of hot potato.
- Configure Link Characteristics
- Describe the link characteristics like bandwidth, delay, and error rates, making a realistic environment in which exit routes are favoured.
- Set up higher delay and cost parameters at links reaching to the network core, even though allocating the lower costs to links directing to exit points.
- Define Application Traffic
- Configure application traffic making flows, which will utilize the hot potato routing:
- Make traffic patterns such as HTTP, FTP, video streaming in which traffic from internal clients is intended for nodes beyond the network (out of exit routers) in Application Config and Profile Config.
- Link profiles to internal nodes replicating leaving traffic, which requires rapidly leaving the network.
- Enable Data Collection for Hot Potato Routing Metrics
- Monitor performance of hot potato routing, allow related parameters:
- Hop Count: Monitor the number of hops for each packet receives to make sure that packets fastly attain exit points.
- Packet Delay and End-to-End Latency: Estimate the duration for packets to leave the network, to concentrate on reducing delay in the internal network.
- Link Utilization: Observe the link usage that particularly at paths directing to exit routers verifying that traffic flows by the shortest exit routes.
- Exit Router Usage: Monitor which exit routers manages the most traffic, to confirm that the nearest exits are effectively used.
- Run the Simulation
- Execute the replication then observe from internal nodes to the closes exit routers how traffic flows.
- Monitor routing table updates and path selection verifying that packets are routed to the exit points instead of deeper toward the network.
- Analyze Results
- After the replication to estimate the performance of hot potato routing utilizing OPNET’s analysis tools:
- Exit Efficiency: Check that traffic is lead to the nearest exit points also verify if any packets are needlessly routed in the network.
- Packet Delay and Hop Count: Verify that packets attain exit points within minimal hops and low latency.
- Link Utilization: Analyse how successfully traffic is delivered if any internal links are underutilized or overutilized and through exit links.
- Congestion and Resource Usage: Examine the utilization of core against the edge links, since hot potato routing would reduce the core congestion along rapidly offloading traffic to exits.
In this set up, Hot Potato Routing Project’s simulation has been carried out with the help of above sequential methodology in OPNET tool. Also, we will prepare to offer more details on this topic.
We handle deflection routing and shortest exit routing by providing simulation and configuration services with clear explanations. If you’re interested in simulating Hot Potato Routing Projects using OPNET, we can offer customized research work. Our experts will ensure your project is completed accurately and on time.
