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Question 24 - 300-420 discussion

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Refer to the exhibit.

EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the links to R4. When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?

A.

R1 has no route to R2 and drops the traffic

Answers
A.

R1 has no route to R2 and drops the traffic

B.

R1 load-balances across the paths through R3 and R4 to reach R2

Answers
B.

R1 load-balances across the paths through R3 and R4 to reach R2

C.

R1 forwards the traffic to R3, but R3 drops the traffic

Answers
C.

R1 forwards the traffic to R3, but R3 drops the traffic

D.

R1 forwards the traffic to R3 in order to reach R2

Answers
D.

R1 forwards the traffic to R3 in order to reach R2

Suggested answer: A

Explanation:

The EIGRP stub routing feature will prevent the remote device from advertising core routes back to the distribution devices. Routes learned by the remote device from Distribution 1 will not be advertised to Distribution 2. Therefore,

Distribution 2 will not use the remote device as a transit for traffic destined to the network core https://www.cisco.com/c/en/us/td/docs/iosxml/ ios/iproute_eigrp/configuration/15-mt/ire-15-mt-book/ire-eigrp-stub-rtg.html

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asked 07/10/2024
Ian Gothard
35 questions
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