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IP Concepts, Terminology, and Features
114065 Rev. A 1-9
Figure 1-2. Internet Segmented into Three Autonomous Systems
Routing Information Protocol (RIP)
The Routing Information Protocol (RIP) is a distance-vector protocol that enables
routers in the same autonomous system to exchange routing information by means
of periodic RIP updates. Routers transmit their own RIP updates to neighboring
networks and listen for RIP updates from the routers on those neighboring
networks. Routers use the information in the RIP updates to keep their internal
routing tables current. For RIP, the “best” path to a destination is the shortest path
(the path with the fewest hops). RIP computes distance as a metric, usually the
number of hops (or routers) from the origin network to the target network.
Router
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Router
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Router
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Autonomous
System 3
Autonomous
System 2
LAN
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LAN
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LAN
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LAN
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LAN
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LAN
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LAN
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IP0006A
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