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2. routed and RIP

Dynamic routing is a complex subject. Many protocols do exist to exchange routes between IP hosts. Many of these protocols involve some notion of security (Which machines are allowed to tell me new routes). This is not the case with routed. It uses a fairly simple protocol where every host is allowed to tell every other host about the routes it knows. Using a simple metric scheme, one is able to locate the best (or the real) route to a given network. This is what RIP gives you. routed implements the RIP protocol.

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