In this video, Russ discusses how EIGRP uses feasible distance to determine the best path to a network destination. Learn how feasible distance is calculated in the EIGRP topology.
- [Instructor] So how does EIGRP compare multiple routes…within the EIGRP topology to a destination network?…Well, EIGRP uses the diffusing update algorithm,…or dual process, and it uses it's metrics…to compare EIGRP routes within the topology.…The EIGRP metric is known as feasible distance.…Now feasible distance is made up of multiple factors…such as speed and delay.…
Now this allows EIGRP to adequately compare paths…to network destinations within the topology.…Then using the dual algorithm, the EIGRP-enabled router…can choose the best path to get to our network destination.…Now as we can see from this diagram, the feasible distance…to a network destination is a combination of two values.…The first is the local distance,…or the value to get to the neighboring router.…This is an addition to the advertised distance,…or the value to get from the neighboring router…to the destination network.…
Now sometimes this is called advertised distance,…and sometimes it's referred to as reported distance.…Either way, it's the same value.…
- Static routing
- Dynamic routing
- Interior vs. exterior routing protocols
- InterVLAN routing
- OSPF routing
- EIGRP routing
- Other routing protocols
Skill Level Intermediate
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5. Other Protocols
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