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OSPF uses link-state technology. OSPF will choose the path via the T3
links. This is
opposed to distance vector technology used by protocols such as RIP.
RIP will choose the path via the 64k links.
Link-state
routers maintain a common picture of the network and exchange link
information upon initial discovery or network changes. Link-state
routers do not broadcast their routing tables periodically like
distance vector routing protocols do. While RIP is appropriate for
small networks, OSPF was written to address the needs of large,
scalable internetworks. OSPF addresses the following issues:
Although OSPF was written for large networks, implementing it
requires proper design and planning, which is especially important if
the network has more than 50 routers. At this size, it is important to
configure the network to let OSPF reduce traffic and combine routing
information whenever possible.
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Interactive Media Activity
Checkbox: RIP versus OSPF
Upon completion of this activity, the student will be able
to compare routing issues between RIP and OSPF.

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