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You are configuring spoke SDP termination of a VPLS service on a VPRN interface on an Nokia 7750 SR. The spoke SDP is running over a NULL encapsulated network port. The best practice is to set the VPRN interface p-mtu equal to what value over a NULL encapsulated network port.
Suggested Answer: B
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32 comments · newest first
LI
Lili
6 months ago
I feel like A is the best practice. Always account for overhead!
WA
Wava
6 months ago
I’m not sure, but E sounds too simple.
FR
Francoise
6 months ago
D seems right. LDP bindings are key for MTU.
LA
Lai
6 months ago
I lean towards A. Adjusting for the overhead makes sense.
BR
Bronwyn
6 months ago
I think it's option C. Service-MTU is crucial.
MA
Malinda
6 months ago
LMTU from LDP bindings is also a good point to consider.
WI
Willodean
7 months ago
Wait, why minus 14? That seems odd.
RA
Rana
7 months ago
Agree, the path-MTU is key here!
FA
Fatima
7 months ago
I thought it was the service-mtu of the VPLS service?
MA
Mari
7 months ago
It's definitely the SDP path-MTU minus 14.
SA
Salina
7 months ago
The SDP path-MTU minus 14? Sounds like a job for a calculator and a lot of patience.
RU
Ruthann
8 months ago
Wait, is this a trick question? I'm just going to go with the SDP path-MTU and hope for the best.
EA
Earnestine
8 months ago
The LMTU minus 14? Sounds like they're trying to trip us up. I'll stick with the SDP path-MTU.
GE
Gearldine
8 months ago
The SDP path-MTU minus 14? Sounds like a recipe for a headache, but I guess that's what we're here for.
RE
Remona
8 months ago
C'mon, the service-MTU of the VPLS service? That's way too obvious. I'm going with the SDP path-MTU.
AL
Alva
9 months ago
The LMTU on the VPLS side? Seriously, why can't they just make this simple?
ED
Edison
9 months ago
The SDP path-MTU minus 14 sounds about right. I mean, who doesn't love a good MTU adjustment?
KE
Kerry
9 months ago
I’m leaning towards the option that involves the LMTU minus 14, but I’m confused about how that interacts with the NULL encapsulation.
CI
Ciara
9 months ago
I feel like the configured service-mtu of the VPLS service is the right choice, but I can't recall if there are exceptions for NULL encapsulated ports.
LE
Leana
9 months ago
I remember practicing a similar question where we had to consider the LMTU from the router LDP bindings. Could that be relevant here too?
JO
Jordan
9 months ago
Ah, I see. The question is specifically asking about a NULL encapsulated network port, so that narrows down the options. I think I've got this one figured out now.
LU
Lucina
10 months ago
Based on my understanding, the best practice is to set the VPRN interface p-mtu to the SDP path-MTU minus 14. That seems to be the most logical choice here.
BE
Bettina
10 months ago
I'm a bit confused on the concept of LMTU and how that relates to the VPLS service-MTU. I'll need to review that before answering.
KI
Kimbery
10 months ago
I think the p-mtu should be set to the SDP path-MTU minus 14, but I'm not entirely sure why that specific adjustment is necessary.
TW
Twanna
11 months ago
B could be the answer. LMTU is important in VPLS.
CA
Casie
11 months ago
Okay, let's see. I think the key here is understanding how the VPLS service and the NULL encapsulated network port interact.
AZ
Azzie
11 months ago
Hmm, this looks like a tricky one. I'll need to think through the different options carefully.
MA
Mary
4 months ago
Don't forget about the implications of the LMTU!
TI
Titus
5 months ago
What about option D? Seems reasonable too.
BR
Brande
10 months ago
I think option C makes sense.
JE
Jesusita
10 months ago
This is definitely a tough question.
SA
Salena
11 months ago
I’m leaning towards option E.