BGP SCENARIO BASED QUESTION ANSWER PROBLEM 3

In a BGP scenario-based question, we explore a common problem involving route selection and propagation between multiple Autonomous Systems (AS). Consider a network administrator who needs to troubleshoot a routing issue where certain routes are not being advertised as expected. The administrator must analyze the BGP attributes such as AS path, next hop, and local preference to determine why the preferred route is not being chosen. Additionally, looking into configurations on both eBGP and iBGP peers may provide insights into potential misconfigurations. By simulating different scenarios, including changes in route policies or attributes, the administrator can identify the root cause of the problem and implement solutions to ensure optimal route propagation and selection across the network. Understanding these complexities is crucial for maintaining robust and efficient routing in large-scale networks.