What advantage does ISC provide over traditional distance-vector protocols?

The advantage of ISC (Intermediate System to Intermediate System) over traditional distance-vector protocols lies in its better scalability in large networks. Unlike distance-vector protocols, which share routing information based on hop counts and may require significant bandwidth as routers need to share their entire routing tables with their neighbors, ISC is a link-state routing protocol. This means that each router maintains a complete view of the network topology rather than just the distance to each route, which is why it scales better.

As the network grows, ISC allows routers to only share updates about changes in the network topology rather than the entire routing table. This results in more efficient use of bandwidth and faster convergence times, making it much more suitable for larger and more complex networks where traditional distance-vector protocols would struggle. The ability to efficiently manage routing information in larger environments makes ISC superior in terms of scalability.