Juniper JN0-664 Exam - Topic 9 Question 17 Discussion

Actual exam question for Juniper's JN0-664 exam

Question #: 17
Topic #: 9

[All JN0-664 Questions]

Exhibit

You have MAC addresses moving in your EVPN environment

Referring to the exhibit, which two statements are correct about the sequence number? (Choose two)

AIt identifies MAC addresses that should be discarded.

BIt resolves conflicting MAC address ownership claims.

CIt helps the local PE to identify the latest advertisement.

DIt is advertised using a Type 2 message

Show Suggested Answer

Suggested Answer: B, C

The sequence number is a field in the MAC mobility extended community that is used to resolve conflicting MAC address ownership claims and to help the local PE to identify the latest advertisement. The sequence number is incremented by one for every MAC address mobility event, such as when a host moves from one Ethernet segment to another segment in the EVPN network. The PE device that receives multiple MAC advertisements for the same MAC address chooses the one with the highest sequence number as the most recent and valid advertisement.

by Lynelle at Jan 23, 2024, 04:50 AM

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Sharen

3 months ago

Wait, can someone explain how the sequence number works?

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Loise

3 months ago

D is interesting, but is it really Type 2?

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Tegan

4 months ago

A seems off, it doesn't discard MACs.

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Ezekiel

4 months ago

I think B is right too, it resolves conflicts.

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Lorriane

4 months ago

C is definitely correct, it helps identify the latest ad.

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Natalya

4 months ago

I'm a bit confused about whether it identifies MAC addresses to discard or not. I need to think more about that.

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Mariann

4 months ago

I practiced a similar question, and I feel like the sequence number is definitely advertised using a Type 2 message.

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Mi

4 months ago

I remember something about resolving conflicting MAC address ownership claims, but I can't recall if that's related to the sequence number.

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Fairy

5 months ago

I think the sequence number helps the local PE identify the latest advertisement, but I'm not sure about the other options.

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Georgiana

5 months ago

Okay, I think I've got this. The sequence number helps the local PE identify the latest advertisement, which is option C. And it also resolves conflicting MAC address ownership claims, which is option B. I'm pretty confident in those two answers.

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Daren

5 months ago

I'm a bit confused by this question. I know the sequence number is important in EVPN, but I'm not sure exactly how it's used to resolve conflicting MAC address ownership claims or identify MAC addresses that should be discarded. I'll need to review my notes on EVPN to make sure I understand this properly.

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Gilberto

5 months ago

The sequence number helps the local PE identify the latest advertisement, so I'm pretty confident that option C is correct. I'm not sure about the other options though, so I'll have to think through those more carefully.

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Glenn

5 months ago

Hmm, this question seems to be testing my understanding of EVPN sequence numbers. I'll need to carefully review the options and think through how the sequence number is used in this context.

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Laura

5 months ago

Hmm, I'm a little unsure about this one. The options seem to cover a range of network and package management tasks. I'll need to carefully read through each choice and think about how they might apply to the specific issue described.

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Chau

5 months ago

Hmm, I'm a bit confused on this one. I know link state protocols maintain some kind of database, but I can't recall the exact three. I'll have to think this through carefully.

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Junita

5 months ago

I'm a bit unsure about this one. The options seem a bit broad, so I'll need to think it through carefully before answering.

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Jerry

5 months ago

Hmm, I'm a bit confused by the use of the fork and branch symbols here. I'll need to review the rules for activity diagrams to make sure I understand this properly.

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