Juniper Exam JN0-363 Topic 1 Question 47 Discussion

Actual exam question for Juniper's JN0-363 exam

Question #: 47
Topic #: 1

[All JN0-363 Questions]

You are troubleshooting two OSPF routers that have an adjacency that remains in the ExStart state.

What would cause this problem?

Amismatched OSPF hello intervals on the OSPF interfaces

Bmismatched authentication settings on the OSPF interfaces

Cmismatched MTU settings on the OSPF interfaces

Dmismatched subnet settings on the OSPF interfaces

Show Suggested Answer

Suggested Answer: C

https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13684-12.html#anc13

Neighbors Stuck in Exstart/Exchange State The problem occurs most frequently when you attempt to run OSPF between a Cisco router and another vendor router. The problem occurs when the maximum transmission unit (MTU) settings for neighboring router interfaces do not match. If the router with the higher MTU sends a packet larger that the MTU set on the neighboring router, the neighbor router ignores the packet. When this problem occurs, the output of the show ip ospf neighbor command displays output similar to what is shown in this figure.

by Kirby at Oct 19, 2024, 08:58 PM

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Juan

28 days ago

Hah, I bet it's A) mismatched OSPF hello intervals. Those routers are probably waving at each other but can't quite sync up their dance moves.

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Stephen

8 days ago

User 2: Maybe they just need to get in sync with their timing.

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Gearldine

18 days ago

User 1: Yeah, I think you're right. A) mismatched OSPF hello intervals could definitely cause that.

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Alva

30 days ago

Hmm, I think it's B) mismatched authentication settings on the OSPF interfaces. Gotta make sure those passwords match, or else the routers won't trust each other.

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Catarina

2 days ago

User 2: Maybe we should double check the passwords on both routers to make sure they match.

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Van

25 days ago

User 1: I agree, mismatched authentication settings can definitely cause issues with OSPF adjacency.

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Marla

2 months ago

D) mismatched subnet settings on the OSPF interfaces sounds like the likely culprit here. If the subnets don't match, how can the routers even establish a connection?

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