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?
A . Spanning tree Loop-guard was implemented on the uplink-state group.
B . One of the upstream interfaces is an uplink-state group went down.
C . There was no issue; this is normal behavior.
D . Both a port channel and its members were assigned to an uplink-state group.
Answer: A
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