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Overview RIP

On the current Internet, it is impossible to run only one gateway protocol. You can divide it into multiple Autonomous Systems (ASs), each of which has its own routing technology. The internal routing protocols within an AS are Interior Gateway Protocols (IGPs). Routing Information Protocol (RIP) is one type of IGP. RIP adopts the

Vector-Distance algorithm. RIP features simple and easy-to-use, so it is widely used in numerous small-sized networks.

RIP has two versions: RIPv1 and RIPv2. RIPv1 does not support classless routing, and RIPv2 supports classless routing. Usually, RIPv2 is used.

RIP is a simple protocol which provides simple configuration. However, the number of routes to be advertised by RIP is directly proportional to the number of routes in the routing table. If the number of routes is large, a lot of device resources and network resources are consumed. In addition, RIP specifies that the maximum number of hops that a routing path that passes routers is 15, so RIP is applicable only to simple small- and medium-sized network. RIP is applicable for most campus networks and LANs with a simple structure and strong continuity. For a more complex environment, RIP is not recommended.

RIPv1 was introduced earlier in RFC1058, but it has many deficiencies. To improve the deficiencies of RIPv1, RFC1388 introduced RIPv2, which was then revised in RFC 1723 and RFC 2453.