Routing Information Protocol (RIP)

- Used to manage router information in a self-contained network (LAN).


- Gateway host sends its routing table to the closest router each 30 seconds.


- Then send the contents of its routing tables to neighboring routers.


- Best for small networks, because the transmission of the full routing table each 30 seconds can load on the network.


- RIP tables are limited to 15 hops. 


- OSPF(Open Shortest Path First) is a better alternative for larger network.


- Two versions of RIP. 
1. RIPv1 -> uses a UDP(User Datagram Protocol) broadcast over port 520 to send updates to routing tables.
2. RIPv2 -> uses multicast to send routing table updates.


Tutorial:
1.Cisco How To Configure RIPv1
2.Cisco How To Configure RIPv2