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What is the minimum Ethernet physical network MTU required for a Layer 2 service on an MPLS encapsulated SDP with a service MTU of 1500?
Suggested Answer: D
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30 comments · newest first
AN
Anissa
6 months ago
D) 1522 makes sense for encapsulation. More room for headers.
JO
Jodi
6 months ago
I feel A) 1500 is the safest choice. No extra bytes needed.
MI
Miesha
7 months ago
C) 1514 could work too. Not too much overhead.
KA
Karan
7 months ago
B) 1508 sounds reasonable. Just a bit more than 1500.
RE
Rebeca
7 months ago
I lean towards D) 1522. Extra overhead, right?
AL
Altha
7 months ago
I think it's A) 1500. Seems straightforward.
GO
Goldie
7 months ago
Wait, I didn't know it could be that high!
ST
Steffanie
8 months ago
I thought it was 1508?
BR
Brittni
8 months ago
It's 1514 for Ethernet with VLAN tagging.
KI
Kirk
8 months ago
Haha, who even uses MPLS these days? I'd just go with the standard 1500 MTU and call it a day.
TH
Theresia
8 months ago
B) 1508 is the right answer. You need to add the MPLS header size to the service MTU.
EL
Elmer
9 months ago
C) 1514 is the way to go. That's the standard Ethernet MTU with VLAN tagging.
DA
Daron
9 months ago
D) 1522 is the correct answer. You need to account for the MPLS header and other overhead.
AS
Asuncion
9 months ago
I’m really uncertain about this one. I thought the minimum was just 1500, but now I’m questioning if it should include the additional bytes.
DE
Desire
9 months ago
I feel like the answer is 1522 since it includes the overhead for the MPLS label, but I could be mixing it up with another topic.
RE
Renato
9 months ago
I remember practicing a similar question, and I think the answer was 1514, but that was for a different context.
AL
Aleisha
9 months ago
Alright, I've got this. The service MTU is 1500, so I just need to add the MPLS overhead to get the minimum Ethernet MTU. I think the answer is B.
ME
Melvin
10 months ago
I'm a bit confused by the wording of this question. I'll need to review my notes on MPLS and Ethernet MTUs to figure this out.
GL
Glory
10 months ago
The key here is understanding the MPLS encapsulation and how that affects the Ethernet frame size. I'll need to do some quick calculations.
JA
Jarod
10 months ago
A) 1500 seems like the obvious choice here. MPLS encapsulation shouldn't affect the service MTU.
JA
Jaime
10 months ago
I think the MTU needs to be larger than 1500 to account for the MPLS headers, but I'm not sure by how much.
NO
Nohemi
11 months ago
Nah, it's 1500, right?
WI
Winfred
11 months ago
Definitely 1522 for MPLS.
FR
Frank
11 months ago
Okay, let's see. The question is asking about the minimum Ethernet physical network MTU, so I'll need to consider the MPLS overhead.
LA
Lashanda
11 months ago
Hmm, this is a tricky one. I'll need to think through the MPLS encapsulation and how that impacts the Ethernet MTU.
DE
Delmy
6 months ago
MPLS adds overhead, so D) 1522 makes sense.
LU
Luz
6 months ago
I believe it’s C) 1514.
LA
Laura
6 months ago
Isn’t it A) 1500?
LO
Long
6 months ago
I’m leaning towards D) 1522.
TE
Tequila
10 months ago
I think it’s B) 1508.