textarea=Routing Information Protocol, or RIP, and the Open Shortest Path First, or OSPF, are two examples of the many protocols that are available to support routing over a variety of platforms and connections. There is also the Point-to-Point Protocol, or PPP, which works with TCP/IP to support routing over a serial link. Routers must share the same protocol in order to communicate. Accordingly, most routers employ multiple protocols so they can communicate with other networks despite configuration differences.
