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Routing Information Protocol (RIP)
Routing Information Protocol (RIP) is a true distance-vector routing protocol. RIP sends
the complete routing table out to all active interfaces every 30 seconds. RIP only uses hop count to determine the best way to a remote network, but it has a maximum allowable
hop count of 15 by default, meaning that 16 is deemed unreachable. RIP works well in
small networks, but it’s inefficient on large networks with slow WAN links or on networks
with a large number of routers installed.
RIP version 1 uses only classful routing, which means that all devices in the network must
use the same subnet mask. This is because RIP version 1 doesn’t send updates with subnet
mask information in tow. RIP version 2 provides something called prefix routing and does
send subnet mask information with the route updates. This is called classless routing.
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