Original sentence: However, naïve distance-vector algorithms do not scale well (due to the count-to-infinity problem ), and have poor convergence properties, which has led to the development of more complex but more scalable algorithms, such as link-state routing protocols and loop-free distance-vector protocols, for use in large networks
Edited sentence: Distance-vector protocols suffer from the count-to-infinity problem.However, naïve distance-vector algorithms do not scale well, and have poor convergence properties, which has led to the development of more complex but more scalable link-state routing protocols for use in large networks