What is the main purpose of using split horizon in RIP?

The primary purpose of using split horizon in the Routing Information Protocol (RIP) is to reduce routing loops. Split horizon is a technique that prevents a router from advertising routes back out the same interface from which they were learned. This reduces the chances of creating routing loops, which can occur when there are circular paths in the routing information. By implementing split horizon, routers can avoid sending information about a route on the same interface that initially received it, breaking the potential loop cycle and stabilizing the network.

Other options are related to networking concepts, but they do not specifically address the function of split horizon in RIP. Enhancing security, increasing bandwidth, and providing faster convergence do play roles in network design and operation but are not the central goals of using split horizon in the context of RIP. The integral focus is on maintaining a stable routing environment and preventing loops, which can cause significant network disruptions.