What is a major advantage of using an IGP in a large network?

The use of an Interior Gateway Protocol (IGP) in a large network provides significant advantages in how routing information is handled and optimized. When an IGP is implemented, it is designed to dynamically learn about all available routes within the network. This feature enables the protocol to automatically update the routing table based on the current network conditions, promoting efficient traffic management.

One of the critical aspects of utilizing an IGP is its ability to choose the best path for data transmission based on various metrics, such as bandwidth, delay, and reliability. This means that as network topology changes—due to additions, failures, or other dynamics—the IGP promptly recalculates the routes to ensure that data can continue to flow optimally through the most effective pathways. This adaptability is vital for maintaining performance in a large and often complex network environment.

Thus, the main advantage lies in its dynamic route learning and path selection, which supports efficient and reliable networking.