NPA Tool with no extra billing cost and below are highlights of tool , I found very good and will definitely help to troubleshoot network as well helps to provide details data to customers when they complaint about slowness .
Bases on Open Source network configuration analysis - Batfish
Troubleshoot endpoint reachability issues
NPA collects and analyzes the network configuration
Use to identify virtual network configuration, connectivity & endpoint reachability issues.
Defines Source & Destination IP & Ports
You can troubleshoot routing and security misconfigurations that are causing reachability issues
Troubleshoot issues within OCI networks, Hybrid Cloud network, multicloud networks
Uses a full configuration snapshot for analysis
Visualizes the network paths in the presentation of the analysis results.
You can use to perform on-demand Validations
What is Network Path Analyzer?
Network Path Analyzer is a network reachability analysis tool based on the real-time network configuration.
Its primary data input is the network routing and security configuration in a customer tenancy, augmented with key network runtime state data, such as the status of a load balancer backend set or the state of a FastConnect virtual circuit.
Network Path Analyzer answers the following questions:
Can the two endpoints reach each other as the business needs them to?
If they can’t, why? What is missing?
If they can, how? Over which routing paths, using which security policies?
Benefits of Network Path Analyzer
Troubleshoot reachability issues caused by misconfiguration much faster, significantly reducing the Mean Time to Resolution (MTTR) for this type of outage
Proactively verify and validate the network routing and security policy configuration for your reachability intents before even starting to send application traffic
A tool to perform on-demand validation of the logical network paths to match your intent
How to use Network Path Analyzer
Network Path Analyzer is directly available under Networking on the Oracle Cloud Console.
You only need to create a path analysis and run it.
An API is available for you to programmatically create, manage, and run your path analyses
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