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Routers in the Internet core exchange between three
and six million routing prefixes each day, and the fluctuation
of network topology can have a direct impact on a router's
performance. A router than has not yet reached convergence
in its internal routing tables may drop packets or deliver
packets to the wrong next-hop router.
This concise application note provides a quick introduction
to Route Flap Convergence and a few easy test steps
required to evaluate how the forwarding performance
of the router is effected by routing instabilities.
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