When was the Routing Information Protocol Invented?
The routing information protocol was created by C. Hedrick of Rutgers University in the summer of 1988. Since then it has become the most common routing protocol on LANs and WANs and continues to be used today. Hedrick’s work was based on the Unix computer program “routed” that was distributed with the 4.3 version of the BSD branch of the OS. At the time the “routed” protocol was the de-facto standard for research laboratory’s to communicate via network gateways. The RIP protocols make use of the Bellman-Ford algorithm for distance vector computation and other work completed as early as 1969 on the ARPANET. Hedrick’s work was also preceded by the PUP protocol would later be upgraded to become the implementation of the RIP.
How Does the Routing Information Protocol Work?
RIP relies upon a routing database which stores information on the fastest routes that exist between destination on the network. This lets each router tell others that fastest route(s) from their aspect an uses an update algorithm that revises route updates for each router based on the latest information from neighboring routers. Within each database the IP address, gateway, distance, route change flag, and timers are stored for each destination within a given routers purview.
What is the Routing Information Algorithm?
The RIP algorithm requires that each router transmit on a regular interval an update message that describes the contents of its routing database to all of the routers it is communicating with. Sometimes routers will have to send this message as often as twice a minute in order to keep the networks routers updated with the most up-to-date information on the computers and routers that are currently on the network. Once a router discovers that a neighboring one has a shorter or faster path to a given destination, then it will revise its local database to include this faster path. This new path is then sent to the neighboring routers through the update process of the protocol until the entire network is updated. The RIP protocol makes use of the UDP data transmission packet to improve efficiency since it can rely on sending future updates on regular intervals.
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