Discuss Nokia 4A0-113 Exam Topic 9 Question 107

An OSPF adjacency is stuck in the exstart state. What is the most likely cause?

BOSPF is not enabled on one of the routers.

DAn OSPF Hello has not been received from the neighbor.

CThe router ID is the same on both routers.

AThe MTU does not match on both interfaces.

EThe interfaces are configured as point-to-point on one side and broadcast on the other.

Suggested Answer: A

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26 comments · newest first

Tiffiny 3 months ago

True, but MTU is the most common cause. Always check that first!

Val 4 months ago

Could also be a problem with the hello or dead intervals, right?

Bok 4 months ago

Yeah, that makes sense. If they don't match, it can cause issues.

Ronny 4 months ago

I think it's due to mismatched MTU sizes.

Jules 5 months ago

Nah, it's definitely about the DR/BDR election process.

Chau 6 months ago

Surprised to hear it's often just MTU, thought it was more complex!

Mitsue 6 months ago

I thought it could also be a problem with the OSPF timers?

Angelica 6 months ago

Totally agree, MTU issues are common here.

Esteban 6 months ago

Usually due to mismatched MTU sizes.

Claudia 6 months ago

Ooh, exstart state, that's a tricky one. Bet the network gods are playing a little prank on us.

Dick 6 months ago

I bet it's a pesky OSPF timer issue. Time to break out the debugs and get to the bottom of this.

Arthur 7 months ago

Hmm, exstart state, eh? Sounds like someone's been hitting the coffee a little too hard.

Elden 7 months ago

Probably a misconfigured MTU or a faulty network cable. Time to get the network admin on the case!

Garry 7 months ago

The router must be having a bad day, stuck in the exstart state like that.

Isabelle 7 months ago

I practiced a similar question, and I think it might have to do with the OSPF timers being misconfigured.

Joana 7 months ago

I'm not entirely sure, but I feel like it could also be related to the router IDs not matching.

Alonzo 8 months ago

I think I saw a practice question about OSPF states, and it mentioned issues with the database description packets.

Hershel 8 months ago

I remember something about mismatched MTU sizes causing issues in OSPF. Could that be it?

Leanna 8 months ago

Ah yes, the exstart state - that's where the routers negotiate the initial exchange of database info. Hmm, could be a number of things causing it to get stuck there.

Justine 9 months ago

I'm a bit unsure about this one. The exstart state... I know that's an early stage in the OSPF adjacency process. Gotta dig into the details on that.

Ben 9 months ago

Okay, let's see. The exstart state is where the routers exchange their database descriptions, right? Probably need to check the network config.

Agustin 9 months ago

Ah, the exstart state - I remember learning about that. Gotta figure out what's causing the issue there.

Olene 9 months ago

Hmm, this seems like a tricky one. I'll need to think through the OSPF adjacency states carefully.

Maia 3 months ago

↳ replying to Olene

Don't forget about the network type configuration!

Gwenn 3 months ago

↳ replying to Olene

Could be a problem with the hello and dead intervals too.

Malcolm 3 months ago

↳ replying to Olene

Maybe there's a mismatch in the MTU settings?

Nokia 4A0-113 Exam - Topic 9 Question 107 Discussion