In order to solve the problem of distance vector routing protocol converge very slowly to the correct routes when link costs increase

a new convergence-free routing protocol CF-RIP using RIP（routing information protocol） was proposed

which is based on failure-carrying packets and multiple viable next hops per destination.The new protocol eliminated the convergence period altogether and could solve the problem of count to infinity.The CF-RIP provided better stability and availability;meanwhile it was proved that a loop-free path to a destination if one such path exists.Simulations performed show that CF-RIP can dealing with the simultaneous failures of multiple arbitrary links effectively.