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Juniper JN0-664 Exam - Topic 9 Question 17 Discussion

ExhibitYou have MAC addresses moving in your EVPN environmentReferring to the exhibit, which two statements are correct about the sequence number? (Choose two)
B) It resolves conflicting MAC address ownership claims. and C) It helps the local PE to identify the latest advertisement.
A) It identifies MAC addresses that should be discarded.
D) It is advertised using a Type 2 message

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)

Show Suggested Answer Hide 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
9 months ago
Wait, can someone explain how the sequence number works?
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Loise
9 months ago
D is interesting, but is it really Type 2?
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Tegan
10 months ago
A seems off, it doesn't discard MACs.
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Ezekiel
10 months ago
I think B is right too, it resolves conflicts.
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Lorriane
10 months ago
C is definitely correct, it helps identify the latest ad.
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Natalya
10 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
10 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
10 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
11 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
11 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
11 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
11 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
11 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
11 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
11 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
11 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
11 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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