A network administrator discovers that an Ethernet port on a managed switch is in a 'Suspended' state. What is the MOST likely reason for this port status?
Using an incorrect cable type, such as using UTP instead of STP
LACP misconfiguration or negotiation failure
Mismatched VLAN assignments on the port
The port has exceeded its power over Ethernet (PoE) budget
In a networking context, a port set to 'Suspended' typically indicates an issue with port aggregation protocols, such as LACP (Link Aggregation Control Protocol) misconfiguration or disagreement. This state can occur if the aggregation negotiation fails, which is crucial in scenarios where multiple links are combined to form a single logical link for bandwidth aggregation and redundancy. Answers involving VLAN mismatch or cable issues, though potentially valid troubleshooting considerations, are less directly associated with the 'Suspended' status, as these would more likely lead to different port statuses or error indications.
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What is LACP and why is it used?
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How does LACP negotiation failure lead to a 'Suspended' port state?
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How can a network administrator resolve LACP misconfiguration?