Description: Modular routing in the context of routing protocols refers to a routing architecture that allows for flexible and scalable routing solutions. This methodology is based on the ability to divide the network into multiple modules, each of which can be managed independently. This not only optimizes resource usage but also enhances routing efficiency by allowing different parts of the network to adapt to their specific needs. Various routing protocols, such as EIGRP (Enhanced Interior Gateway Routing Protocol), employ a distance vector approach and are characterized by rapid convergence and the ability to handle large and complex networks. Modular routing enables these protocols to integrate with other technologies, facilitating interoperability and management of heterogeneous networks. Furthermore, this modular architecture allows for the implementation of customized routing policies, resulting in more granular control over network traffic. In summary, modular routing represents a significant evolution in how networks are managed and optimized, providing a robust and adaptable solution to the changing demands of the modern network environment.