Discuss Cisco 350-501 Exam Topic 1 Question 131

Refer to the exhibit:

P3 and PE4 are at the edge of the service provider core and serve as ABR routers Aggregation areas are on either side of the core.

Which statement about the architecture is true?

AIf each area is running its own IGP. the ABR routers must redistribute the IGP routing table into BGP

BTo support seamless MPLS. TDP must be used as the label protocol

CIf each area is running its own IGP. BGP must provide an end-to-end MPLS LSP

DTo support seamless MPLS, the BGP route reflector feature must be disabled

Suggested Answer: C

In the given architecture, if each area is running its own Interior Gateway Protocol (IGP), Border Gateway Protocol (BGP) must be used to provide an end-to-end Multiprotocol Label Switching (MPLS) Label Switched Path (LSP). This ensures that data packets can traverse through the different IGP areas seamlessly, maintaining connectivity across the entire network.

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23 comments · newest first

Ashton 2 days ago

But B is outdated. A or C feels more relevant.

Latosha 7 days ago

I’m leaning towards B. TDP is essential for MPLS.

Ronnie 12 days ago

I feel like D could be a trap. Reflectors are important.

Donte 17 days ago

C makes sense. BGP is crucial for MPLS LSP.

Shaun 22 days ago

I disagree, A seems too complicated. What about option C?

Stevie 27 days ago

I think option A is correct. ABR routers need to redistribute IGP into BGP.

Nan 1 month ago

I’m with A too. Redistribution is key in this setup.

Paris 1 month ago

I feel like B is important for MPLS, but not the main focus here.

Delpha 1 month ago

A is definitely a must for proper routing.

Ernie 2 months ago

I agree with C. BGP provides the necessary end-to-end connectivity.

Jodi 2 months ago

D seems off. BGP route reflectors can be useful.

Nu 2 months ago

A sounds right, but I’m unsure about the details.

Rebbecca 2 months ago

I’m leaning towards C. BGP is crucial for MPLS LSP.

Vilma 2 months ago

I think option A is correct. ABR routers need to handle IGP redistribution.

Antonio 2 months ago

D) sounds right, route reflectors can complicate things.

Florinda 3 months ago

C) makes sense, BGP is crucial for MPLS LSPs.

Marci 3 months ago

Wait, TDP for MPLS? That seems outdated!

Ronny 3 months ago

I disagree, B) is the way to go for MPLS.

Shayne 3 months ago

A) is correct, ABR routers need to redistribute IGP into BGP.

Thad 3 months ago

I vaguely remember something about BGP route reflectors and MPLS, but I'm uncertain if disabling them is a requirement for seamless operation.

Bernadine 3 months ago

I feel like BGP providing an end-to-end MPLS LSP makes sense, but I need to double-check if that's always necessary when IGPs are involved.

Hoa 4 months ago

I think I came across a similar question about MPLS and label protocols, but I can't recall if TDP is the only option for seamless MPLS.

Dottie 4 months ago

I remember studying about ABR routers and their role in redistributing IGP into BGP, but I'm not sure if that's the only requirement.

Cisco 350-501 Exam - Topic 1 Question 131 Discussion