Discuss Nokia 4A0-115 Exam Topic 6 Question 33

In the exhibit, VPWS 4 enables communications between CEI and CE2. Which of the following statements regarding the operation of VPWS 4 is FALSE?

APEI advertises an auto-discovery per EVPN instance (A-D per EVI) route to PE3 as soon as the SAP becomes operationally

BPE3 advertises an IMET route to PEI as soon as VPWS 4 is administratively enabled.

CPEI and PE3 exchange their service labels using A-D per EVI routes.

DPE3 and PE4 exchange their service labels over an established targeted LDP session.

Suggested Answer: D

EVPN-MPLS provides services over an MPLS network, not a simple IP network.The customer data is encapsulated with an MPLS label that identifies the service and then tunneled between the PE routers using MPLS LSPs1.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

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32 comments · newest first

Madelyn 11 months ago

I thought PE3 and PE4 used a different method for that.

Krystal 11 months ago

C is spot on, they do exchange service labels that way.

Jade 11 months ago

Wait, are we sure about D? That seems off.

Carolann 11 months ago

Totally agree, B is definitely correct too.

Louann 12 months ago

A is true, PEI does advertise as soon as the SAP is operational.

Macy 12 months ago

I’m confused about C. I thought service labels were exchanged through different methods, but I can’t recall the specifics.

Genevive 1 year ago

I’m leaning towards D being false because I thought targeted LDP sessions were only for specific types of exchanges.

Sage 1 year ago

I feel like I’ve seen a similar question before, and it was about how PE routers advertise routes. Maybe B is the one that’s false?

Kati 1 year ago

I think A might be the false statement, but I'm not entirely sure. I remember something about auto-discovery being tied to operational status.

Rodrigo 1 year ago

I'm not entirely sure about the details of VPWS 4 and how it interacts with EVPN. I'll need to think through the options carefully and try to eliminate the ones that don't seem plausible.

Shenika 1 year ago

This looks straightforward. I'm familiar with VPWS and EVPN, so I should be able to spot the incorrect statement quickly and select the right answer.

Caprice 1 year ago

Okay, I think I've got this. The key is to identify the false statement about the operation of VPWS 4. I'll carefully evaluate each option and select the one that doesn't match the expected behavior.

Alaine 1 year ago

Hmm, I'm a bit confused by the terminology in this question. I'll need to review my notes on EVPN and targeted LDP sessions to make sure I understand the right approach.

Laine 1 year ago

This question seems to be testing my understanding of VPWS and EVPN concepts. I'll need to carefully read through the options and think about the correct operation of VPWS 4.

Jesusa 1 year ago

I'm a bit stumped on this one. Time to dust off my VPWS knowledge and give it another read-through.

Hollis 1 year ago

Haha, the question mentions 'CEI' instead of 'PE1'. Looks like someone needs to proofread their exams more carefully!

Tamie 1 year ago

↳ replying to Hollis

C) PEI and PE3 exchange their service labels using A-D per EVI routes.

Shonda 1 year ago

↳ replying to Hollis

B) PE3 advertises an IMET route to PEI as soon as VPWS 4 is administratively enabled.

Ludivina 1 year ago

↳ replying to Hollis

A) PEI advertises an auto-discovery per EVPN instance (A-D per EVI) route to PE3 as soon as the SAP becomes operationally

Beth 1 year ago

I think C is false. PE1 and PE3 don't exchange service labels using A-D per EVI routes. That just doesn't make sense to me.

Benedict 1 year ago

↳ replying to Beth

D) PE3 and PE4 exchange their service labels over an established targeted LDP session.

Coleen 1 year ago

↳ replying to Beth

B) PE3 advertises an IMET route to PEI as soon as VPWS 4 is administratively enabled.

Lenita 1 year ago

↳ replying to Beth

A) PEI advertises an auto-discovery per EVPN instance (A-D per EVI) route to PE3 as soon as the SAP becomes operationally

Kristeen 1 year ago

Hmm, this is tricky. I'm gonna go with D. The service labels are exchanged over a targeted LDP session between PE3 and PE4, not using A-D per EVI routes.

Carolynn 1 year ago

↳ replying to Kristeen

Let's eliminate A and D then. What do you think about B and C?

Dong 1 year ago

↳ replying to Kristeen

I agree, option A also seems suspicious. It might be the false statement.

Micheline 1 year ago

↳ replying to Kristeen

But what about option A? PEI advertising an auto-discovery route to PE3 doesn't seem right.

Hobert 1 year ago

↳ replying to Kristeen

I think you're right. D seems to be the false statement.

Willodean 2 years ago

Option B seems to be the correct answer. PE3 would advertise an IMET route to PE1 as soon as VPWS 4 is enabled, not the other way around.

Felicidad 2 years ago

Hmm, that's an interesting point. I'll have to reconsider my answer.

Berry 2 years ago

I disagree, I believe the false statement is D) PE3 and PE4 exchange their service labels over an established targeted LDP session.

Felicidad 2 years ago

I think the answer is B) PE3 advertises an IMET route to PEI as soon as VPWS 4 is administratively enabled.

Nokia 4A0-115 Exam - Topic 6 Question 33 Discussion