Cisco Exam 300-610 Topic 4 Question 84 Discussion

Actual exam question for Cisco's 300-610 exam

Question #: 84
Topic #: 4

A Cisco engineer is configuring MPLS VPN BGP at a customer site that is connected to the provider site by more than one path MPLS VPN BGP Local Convergence link protection is enabled. After the engineer installs the main forwarding path and the redundant backup path within the BGP, they assign a unique route distinguisher to each VRF table on all PE devices that serve as a backup to the link. What is a prerequisite for this local convergence to work?

AInterautonomous system option A (back-to-back VRF) is active.

BBGP must support lossless switchover between operational paths

CIP/GRE is enabled.

DThe system is performing a PE-CE link protection on both ends

Show Suggested Answer

Suggested Answer: D

by Arlette at Apr 12, 2024, 05:35 PM

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Melina

8 hours ago

You know, I'm just wondering why they're asking about this specific scenario. Is this a trick question or something?

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Gracia

1 days ago

Ah, I see what you mean. And option D, the PE-CE link protection on both ends, doesn't seem to be a prerequisite here, since the question is focused on the local convergence within the provider's network.

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Izetta

2 days ago

Haha, yeah, that would be a pretty strange prerequisite. Alright, I think we've got a good handle on this. I'm going to go with option B as the answer.

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Viva

2 days ago

Ah, good point. The question does specifically mention that local convergence is enabled, so that must be a prerequisite.

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Alease

3 days ago

I'm not convinced that's the only requirement. Doesn't the system also need to be performing PE-CE link protection on both ends? That's what option D says.

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Tonette

3 days ago

Haha, can you imagine if the answer was just 'the engineer remembers to bring their lucky rabbit's foot to work'? That would be a real wild card!

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Rueben

4 days ago

Option B makes the most sense. We need BGP to be able to switch over to the backup path without dropping any traffic.

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Malcom

6 days ago

Hmm, I think the key here is that the backup path needs to be able to take over seamlessly if the main path fails. That sounds like option B to me.

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Kate

8 days ago

I'm not entirely sure about this question. The prerequisites for MPLS VPN BGP local convergence seem a bit tricky to me.

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