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Cisco Exam 300-410 Topic 14 Question 94 Discussion

Actual exam question for Cisco's 300-410 exam
Question #: 94
Topic #: 14
[All 300-410 Questions]

Refer to the exhibit.

Refer to the exhibit R1 cannot establish a neighbor relationship with R2 Which action resolves the issue"?

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Suggested Answer: A

In OSPF (Open Shortest Path First), the MTU (Maximum Transmission Unit) size must match on both sides of a link for OSPF neighbors to form an adjacency12.If the MTU sizes do not match, the OSPF adjacency will not form, and the routers will not become neighbors12.

In this case, R1 cannot establish a neighbor relationship with R2.One possible reason for this could be a mismatch in the MTU size on the interfaces of R1 and R212.

To resolve this issue, you can configure themtu ignorecommand on the interfaces of R1 and R2 (Option A).This command allows OSPF to ignore the MTU size when determining if it can form an adjacency with a neighbor12.This means that even if the MTU sizes do not match, OSPF will still form an adjacency, and R1 and R2 will become neighbors12.


OSPF MTU Mismatch - NetworkLessons.com

Understanding OSPF MTU Mismatch Conditions and Solutions - Cisco

by Hui at Jul 14, 2024, 08:52 PM

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Cassie
2 months ago
Haha, using the 'neighbor' command? That's like trying to set up a blind date between the routers. Nice try, but not the solution here.
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Merilyn
2 months ago
Configuring the MTU on the interfaces is not going to fix the neighbor issue. This is clearly an OSPF configuration problem.
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Roxane
26 days ago
D) Thanks for the tip. I'll give it a try and see if it resolves the issue.
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Malinda
27 days ago
C) Make sure to apply the configuration on both routers for it to work properly.
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Dyan
29 days ago
B) That's correct. Setting the network type to point-to-point should help establish the neighbor relationship.
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Keneth
1 months ago
A) Configure the ip ospf network point-to-point command on the interfaces of R1 and R2
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Ivory
3 months ago
The correct answer is B. The OSPF network type needs to be configured as point-to-point to establish the neighbor relationship between R1 and R2.
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Geoffrey
2 months ago
Oh, I see. Thanks for clarifying.
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Holley
2 months ago
I think the correct answer is B.
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Wilda
3 months ago
I'm not sure, but I think C) Configure the ip ospf network broadcast command on the interfaces of R1 and R2 could also work.
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Marg
3 months ago
I disagree, I believe the correct answer is D) Configure the neighbor 2.2.2.2 command on R1 under the OSPF process.
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Laticia
3 months ago
I think the answer is B) Configure the ip ospf network point-to-point command on the interfaces of R1 and R2.
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