Cisco Exam 350-501 Topic 10 Question 72 Discussion

Actual exam question for Cisco's 350-501 exam

Question #: 72
Topic #: 10

A regional MPLS VPN provider operates m two regions and wants to provide MPLS L 3VPN service for a customer with two sites in these separate locations. The VPN provider approaches another organization to provide backbone carrier services so that the provider can connect to these two locations.

Which statement about this scenario is true?

AWhen edge routers at different regional sites are connected over the global carrier backbone, MP-eBGP must run between the routers to exchange the customer VPNv4 routes

BWhen eBGP is used for label exchange using the send label option, MPLS-BGP forwarding is configured under the global ABC CSC PE-to CE interface

CWhen IGP is used for route exchange and LDP for label exchange, MPLS is enabled only on the VRF interface on the backbone-earner PE side.

DWhen BGP is used for both route and label exchange, the neighbor a.b.c.d send-lable command is used under the address family VPNv4 command mode.

Show Suggested Answer

Suggested Answer: D

by Maile at Jul 25, 2023, 01:38 PM

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Marisha

1 months ago

This question is like a labyrinth of protocols and configurations. I feel like I need a Ph.D. in Cisco IOS just to navigate it!

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Hermila

1 months ago

Ah, the old 'MPLS over MPLS' conundrum. Gotta love it when the provider's provider gets involved. Time to break out the network diagrams and coffee!

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Allene

1 months ago

Option D sounds like the right answer. Using the 'neighbor a.b.c.d send-label' command under the VPNv4 address family is the way to go when using BGP for both route and label exchange.

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Sonia

20 days ago

I think option D is the correct answer.

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Kristofer

2 months ago

Option C seems plausible, but I'm not sure if MPLS needs to be enabled on the VRF interface on the backbone-carrier PE side. Seems a bit specific.

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Slyvia

6 days ago

A: Maybe we can do some more research to confirm before making a decision.

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Sheldon

9 days ago

B: Yeah, that sounds right. But I'm not entirely sure about the specifics either.

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Reita

1 months ago

A: I think option C makes sense, MPLS is usually enabled on the VRF interface on the PE side.

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Loise

2 months ago

I'm not sure about option B. Doesn't eBGP usually handle both route and label exchange, rather than using a separate protocol like MPLS-BGP?

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Nan

10 hours ago

B: Thanks for clarifying that. I understand now.

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Felicia

2 days ago

A: Yes, that's correct. It's a common setup for MPLS L3VPN services.

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Loren

3 days ago

B: So, eBGP is used for route exchange and MPLS-BGP for label exchange in this scenario?

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Lorita

6 days ago

A: Option B is correct. eBGP is used for route exchange, while MPLS-BGP forwarding is configured for label exchange.

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Jacob

13 days ago

Thanks for clarifying. I understand now how eBGP can be used for label exchange in this MPLS VPN setup.

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Ben

1 months ago

Yes, exactly. This setup allows for efficient exchange of labels between the edge routers at different regional sites.

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Felicia

1 months ago

That makes sense. So, MPLS-BGP forwarding would be configured under the global ABC CSC PE-to CE interface, right?

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Evette

2 months ago

Option B is correct. In this scenario, eBGP is used for label exchange using the send label option.

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Ashlee

2 months ago

I'm not sure, but I think option C) might also be a valid choice. Enabling MPLS only on the VRF interface on the backbone-earner PE side could work for route and label exchange.

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Alesia

2 months ago

I agree with Levi. Running MP-eBGP between the routers makes sense for exchanging VPNv4 routes over the global carrier backbone.

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Levi

2 months ago

I think the correct answer is A) When edge routers at different regional sites are connected over the global carrier backbone, MP-eBGP must run between the routers to exchange the customer VPNv4 routes.

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Blondell

2 months ago

I'm not sure, but I think C could also be a valid option since MPLS is enabled on the VRF interface on the backbone-earner PE side.

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Charlene

2 months ago

Option A seems like the correct answer. Using MP-eBGP to exchange customer VPNv4 routes over the global carrier backbone makes sense in this scenario.

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Nickolas

1 months ago

A) Option A seems like the correct answer. Using MP-eBGP to exchange customer VPNv4 routes over the global carrier backbone makes sense in this scenario.

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Catarina

2 months ago

B) When eBGP is used for label exchange using the send label option, MPLS-BGP forwarding is configured under the global ABC CSC PE-to CE interface

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Buddy

2 months ago

A) When edge routers at different regional sites are connected over the global carrier backbone, MP-eBGP must run between the routers to exchange the customer VPNv4 routes

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Malcolm

3 months ago

I disagree, I believe the answer is D because the neighbor a.b.c.d send-label command is used for BGP route and label exchange.

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Pamella

3 months ago

I think the correct answer is A, because MP-eBGP is needed for exchanging customer VPNv4 routes.

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