Discuss Nokia 4A0-115 Exam Topic 9 Question 27

A. Proxy-ARP/ND is operational for a VPLS. Which of the following statements is FALSE?

BThe PE has proxy-ARP and dynamic-populate enabled for the VPLS.

CThe proxy-ARP table is populated by snooping IP packets received from remote PEs.

DWhen the PE learns a local host IP address, it adds an entry into its proxy-ARP table.

EThe PE advertises a MAC/IP route that includes the MAC and IP address of a local host.

Suggested Answer: A

The local AC tag ID configured on PE2 must match the local AC tag ID configured on PE1. This ensures that the tag IDs are consistent across both ends of the VPWS service.The remote AC tag ID configured on PE2 does not need to match the remote AC tag ID configured on PE3, as long as they are unique within each PE1.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

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36 comments · newest first

Elenore 11 months ago

How does the PE learn local host IPs anyway?

Lindsay 11 months ago

Totally agree with B being false!

Rosendo 11 months ago

Wait, are we sure about C? Sounds off.

Edgar 11 months ago

I think B is the false one.

Yan 12 months ago

Proxy-ARP is crucial for VPLS functionality.

Mindy 12 months ago

I think the proxy-ARP table gets populated from snooping, but I'm not entirely sure if that's the only way it works in this context.

Ronna 1 year ago

I feel like option B might be the false one, but I can't quite remember if dynamic-populate is always enabled for VPLS.

Devon 1 year ago

I practiced a similar question where the PE was involved in learning IP addresses, but I can't recall if it actually advertises MAC/IP routes.

Francesco 1 year ago

I think I remember that proxy-ARP is used to help with IP address resolution, but I'm not sure if it applies to VPLS in the same way as regular ARP.

Adelle 1 year ago

The key here is understanding the behavior of Proxy-ARP/ND in a VPLS context. If I can recall the correct mechanisms, I should be able to identify the false statement.

Dalene 1 year ago

I'm pretty confident I know the answer to this one. Proxy-ARP and dynamic-populate are commonly used features in VPLS environments, so I think I can eliminate the incorrect statement.

Chandra 1 year ago

Okay, let me think this through. The question is asking which statement is false, so I need to carefully evaluate each option and identify the one that is incorrect.

My 1 year ago

This question seems straightforward, but I want to make sure I understand the key concepts around Proxy-ARP/ND and VPLS before selecting an answer.

Stevie 1 year ago

Hmm, I'm a bit unsure about the details of how the proxy-ARP table is populated in a VPLS setup. I'll need to review that part carefully before selecting an answer.

Leigha 1 year ago

Hmm, I'm a bit unsure about this one. The options seem to cover different aspects of capability mapping, so I'll need to carefully consider how each one relates to the purpose.

Malinda 1 year ago

I've worked with Azure networking and firewalls before, so I think I've got a good handle on this. My initial thought is that configuring route filters for Microsoft peering should meet the goal, but I'll double-check the details to be sure.

Lonny 1 year ago

Wait, are we supposed to be learning about proxy-ARP or proxy-IP? I'm getting a bit confused here.

Kayleigh 1 year ago

This question is a real brain-teaser! I hope I can remember the difference between ARP and IP packets for the exam.

Juliann 1 year ago

↳ replying to Kayleigh

So, the proxy-ARP table is not populated by snooping IP packets from remote PEs.

Kimberlie 1 year ago

↳ replying to Kayleigh

That's correct! The PE actually learns local host IP addresses and adds them to its proxy-ARP table.

Linwood 1 year ago

↳ replying to Kayleigh

I think the false statement is B) The PE has proxy-ARP and dynamic-populate enabled for the VPLS.

Denny 1 year ago

Option B seems to be the false statement. The PE has proxy-ARP and dynamic-populate enabled for the VPLS, not the other way around.

Carlton 1 year ago

↳ replying to Denny

That makes sense, thanks for clarifying.

Cecilia 1 year ago

↳ replying to Denny

Yes, the PE has proxy-ARP and dynamic-populate enabled for the VPLS.

Billye 1 year ago

↳ replying to Denny

I think option B is the false statement.

Pamella 2 years ago

I think Option D is the correct answer. The PE adds an entry into its proxy-ARP table when it learns a local host's IP address.

Daren 1 year ago

↳ replying to Pamella

User 2: That makes sense. The proxy-ARP table is populated by snooping IP packets received from remote PEs.

Gladys 1 year ago

↳ replying to Pamella

User 1: I think Option D is correct. The PE adds an entry into its proxy-ARP table when it learns a local host's IP address.

Werner 2 years ago

Option C is incorrect. The proxy-ARP table is populated by snooping ARP packets, not IP packets.

Lauryn 1 year ago

↳ replying to Werner

E) The PE advertises a MAC/IP route that includes the MAC and IP address of a local host.

Nelida 1 year ago

↳ replying to Werner

D) When the PE learns a local host IP address, it adds an entry into its proxy-ARP table.

Muriel 1 year ago

↳ replying to Werner

C) The proxy-ARP table is populated by snooping ARP packets received from remote PEs.

Cordie 1 year ago

↳ replying to Werner

B) The PE has proxy-ARP and dynamic-populate enabled for the VPLS.

Svetlana 2 years ago

I believe the correct answer is C) as well, because proxy-ARP is based on ARP requests, not IP packets.

Jerrod 2 years ago

I agree with Ronny, because the proxy-ARP table is actually populated by snooping ARP requests, not IP packets.

Ronny 2 years ago

I think the false statement is C) The proxy-ARP table is populated by snooping IP packets received from remote PEs.

Nokia 4A0-115 Exam - Topic 9 Question 27 Discussion