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CCNP Routing and Switching ROUTE 300-101: Official Cert Guide by Kevin Wallace

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Calculating the Metrics: Feasible Distance and Reported Distance

ImageLesson 6: The EIGRP Feasibility Condition

The EIGRP topology table entry, for a single prefix/length, lists one or more possible routes. Each possible route lists the various component metric values—bandwidth, delay, and so on. Additionally, for connected subnets, the database entry lists an outgoing interface. For routes not connected to the local router, in addition to an outgoing interface, the database entry also lists the IP address of the EIGRP neighbor that advertised the route.

EIGRP routers calculate an integer metric based on the metric components. Interestingly, an EIGRP ...

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