To Simulate the Path Vector Routing in OPNET Modeler typically has contains the setting a network utilizes a protocol such as BGP (Border Gateway Protocol), that is a well-known path vector protocol utilized for inter-domain routing on the network. Path vector protocols handles all path data and assuring a route builds a loop and are optimized the several autonomous systems (AS). Here’s how to set up a path vector routing simulation with BGP in OPNET:
Steps to Simulate Path Vector Routing Projects using OPNET
- Set Up the OPNET Project
- Open OPNET Modeler we generate a new project particularly for path vector routing.
- Describe the project workspace has contains the replication of duration and the metrics we require their capture like as path selection, convergence time, and route stability.
- Design the Network Topology with Autonomous Systems
- Builds a network topology with many routers at represents every different autonomous systems (AS).
- Allocate their routers into distinct AS groups to simulate an inter-domain routing setting.
- These setting are permits the BGP we create routing paths with multiple AS and we configure a connection among AS border routers to replicate a BGP peering relationships.
- Enable BGP (Border Gateway Protocol)
- In Every border router’s properties were enable the BGP as the routing protocol:
- Setting every router with an Autonomous System (AS) number we differentiate from routers in other AS groups.
- State the BGP peering relationships among routers in several AS. This is typically complete through building a BGP sessions among border routers which connect every AS.
- Intended for internal routing within every AS we utilized a several protocol like as OSPF or RIP we required to handles the intra-AS routing while BGP maintains inter-AS paths.
- BGP Attributes:
- Setting BGP attributes such as AS Path (to store the sequence of AS numbers), Next-Hop, and Local Preference to effect path selection. BGP will be utilized this attribute to avoid loops and choose the best paths across AS boundaries.
- Set Up Network Link Characteristics
- Describe every connection feature like as bandwidth, delay, and error rates we demonstrate a several network environments.
- Although BGP utilized path vector attributes rather than parameter metrics such as hop count or bandwidth directly with consistency connection features can be handling the replication network performance.
- Define Application Traffic Between AS Networks
- Setting an application traffic among client and server nodes placed in several AS groups to builds a inter-AS traffic flows.
- In Application Config and Profile Config:
- Configure a realistic traffic model for instance HTTP, FTP, or VoIP which replicate a typical inter-domain traffic.
- We join the profiles to nodes in many AS create data that BGP would be route through the network.
- Configure BGP Metrics Collection for Path Vector Analysis
- Ensure the parameter metrics collection for BGP-specific data, such as:
- AS Path Length: Follow the sequence of AS amounts for every route to verify loop prevention.
- Route Convergence Time: After network changes for state routing to reach a stable of BGP that takes the time to estimate.
- BGP Route Stability: Follow on how well stable the routing paths are connected the AS boundaries.
- Link Utilization and Delay: Monitor the connection utilization and latency to analyse network performance.
- Run the Simulation
- Initially the replication besides on track on how well BGP creates a path based on AS paths, next-hop addresses and other BGP attributes.
- Monitor the exchange of BGP bring up-to-date communication among routers as they build a path and converge of optimal routes.
- Analyse Results
- After the simulation done, we utilized an OPNET’s analysis tools to estimate a BGP’s path vector routing performance:
- Path Selection and AS Path Analysis: Validate that routes allow the sequence of AS paths, confirming loop-free paths.
- Convergence Time: Estimate on how well fine quickly the network reaches stability later a topology change that can be longer for BGP associated to intra-AS protocols.
- Route Stability: Checked the BGP routes continue stable complete time for particularly after connection or AS failures.
- End-to-End Delay and Utilization: Monitor the delay and connection utilization to regulate the paths are optimized.
In the above brief procedure will communicate you how to simulate and evaluate the results using the tool of OPNET for Path Vector Routing projects in the network scenario. Additional specific details regarding this project will update in another manual.
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