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Ericsson Exam ECP-206 Topic 1 Question 11 Discussion

Actual exam question for Ericsson's ECP-206 exam

Question #: 11
Topic #: 1

[All ECP-206 Questions]

Review the exhibit.

A service provider wants to provide L3VPN for two customers (indicated by red and

green in the exhibit).

Referring to the exhibit, which statement is correct?

AThe two customers cannot use overlapping IP prefixes.

BMP-BGP should be configured on all the service provider's routers (Ps and PEs).

CLDP must be configured between PE and CE

DThe service provider's P routers are not aware of the customers' routes.

Show Suggested Answer

Suggested Answer: D

Referring to the exhibit, the correct statement is that the service provider's P routers are not aware of the customers' routes. This is because P routers only need to forward MPLS packets based on their labels, without looking into their IP headers or VPN information. The P routers do not have any VRFs configured for the customers, nor do they participate in MP-BGP sessions with other PE routers.The PE routers are responsible for maintaining VRFs for each customer and for exchanging VPN routes with other PE routers using MP-BGP910.

by Paz at Feb 12, 2024, 08:06 AM

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Aretha

6 months ago

So, to summarize, we need MP-BGP for routing information and LDP for label distribution in this setup.

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Elenor

6 months ago

Yes, Cassie. LDP is important for label distribution in L3VPN services.

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Cassie

6 months ago

But don't we also need LDP configured between PE and CE for label distribution?

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Thad

7 months ago

I agree with Elenor, the MP-BGP is necessary for L3VPN.

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Elenor

7 months ago

I think the correct statement is B) MP-BGP should be configured on all the service provider's routers.

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