4.2. Route Information Protocol (RIP)
The Routing Information Protocol (RIP) is a true distance vector routing protocol. RIP version 1 (RIPv1) broadcasts the complete routing table out to all active interfaces at a set interval, by default every 30 seconds. RIP's only metric, hop count, determines the best path to a destination network. The maximum allowable hop count is 15 by default, meaning that 16 hop destinations are deemed unreachable. RIP works well in small networks, but can quickly become inefficient in a large network. The use of a slow WAN link or a large number of routers installed makes the broadcast nature, or the sending of the entire routing table, inefficient and unable to scale well.
RIPv1 uses classful routing; all devices ...
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