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A customer reports they can no longer access their services and a network administrator has been assigned to investigate. A UFD disabled error status appears on all ports. What caused the issue?
Suggested Answer: A
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26 comments · newest first
ER
Erin
1 month ago
D could be the issue as well. Port channels can complicate things.
DO
Dong
1 month ago
C is possible too. Sometimes it’s just normal behavior.
AS
Ashton
2 months ago
I agree, B seems likely. UFD disabled is a clear sign.
EV
Eva
2 months ago
I think it's B. An upstream interface going down makes sense.
ES
Essie
2 months ago
D is interesting. Port channels can cause issues if not configured right.
DA
Daren
2 months ago
C seems unlikely. This error isn't normal behavior at all.
RE
Reita
2 months ago
I feel like A could be the cause too. Loop-guard can mess things up.
AU
Audry
2 months ago
I think it's B. An upstream interface going down makes sense.
VI
Virgina
3 months ago
D could be the issue as well. Port channels can cause confusion.
KR
Kristofer
3 months ago
C is a possibility too. Sometimes it’s just normal behavior.
KE
Kenneth
3 months ago
I agree, B seems likely. UFD errors usually point to that.
YO
Yolando
3 months ago
I think it's B. An upstream interface going down makes sense.
PO
Polly
3 months ago
Loop-guard shouldn't cause a UFD disabled error, right?
JE
Jenise
4 months ago
I agree with B, but I'm curious about A too.
GW
Gwenn
5 months ago
Wait, is option C really a thing? That seems odd.
TA
Talia
5 months ago
I think it's definitely option D, that can cause issues.
CA
Caren
5 months ago
Sounds like option B to me, an interface must've gone down.
MA
Maurine
6 months ago
Loop-guard can definitely mess things up, so A could be a factor too.
SH
Shenika
6 months ago
Wait, is option C really a thing? That seems odd.
KR
Kris
6 months ago
I’ve seen this before, it’s definitely not normal behavior.
MA
Maxima
6 months ago
I disagree, I think it’s option D. That setup can cause issues.
CH
Chaya
6 months ago
Sounds like option B to me. An interface probably went down.
LO
Loren
6 months ago
I think option D makes sense because if both a port channel and its members are in the same group, it could cause issues. But I'm not 100% confident.
GO
Goldie
7 months ago
I feel like I read somewhere that UFD disabled can sometimes be normal behavior, but I can't recall the specifics.
TE
Tess
7 months ago
This seems similar to a practice question we did on spanning tree protocols. I think option B could be the right answer if an interface went down.
EL
Eladia
7 months ago
I remember studying about uplink-state groups, but I'm not entirely sure how they relate to the UFD disabled error.