Question 1,247 of 1,840
hardMultiple ChoiceObjective-mapped
350-401 Practice Question: Is configuring an EtherChannel between two Cisco…
A network engineer is configuring an EtherChannel between two Cisco switches. The engineer wants to use LACP and ensure that the local switch is the one that determines which ports are active in the channel. Which configuration should be applied?
⚠ Common exam trap
Cisco often tests the distinction between system priority (which determines the controlling switch) and port priority (which determines active vs. standby ports within the same switch), causing candidates to confuse the two.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure 'lacp system-priority 100' on the local switch.
LACP uses the system priority to determine which switch controls port selection when negotiating an EtherChannel. The switch with the lower system priority (higher preference) becomes the 'controlling' switch that decides which ports are active in the channel. By configuring 'lacp system-priority 100' on the local switch, you lower its priority value, making it the preferred decision-maker for active port selection.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure 'lacp system-priority 100' on the local switch.
Why this is correct
Correct because a lower system priority value makes the switch more likely to be the controlling switch in LACP.
- ✗
Configure 'lacp port-priority 100' on the physical ports of the local switch.
Why it's wrong here
Incorrect because port-priority determines which ports are active within the channel, not which switch controls.
- ✗
Configure 'channel-group 1 mode active' on the physical ports.
Why it's wrong here
Incorrect because mode active only initiates negotiation, it does not determine control.
- ✗
Configure 'lacp fast-switchover' on the port-channel interface.
Why it's wrong here
Incorrect because fast-switchover affects failover time, not control.
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Last reviewed: Jul 4, 2026
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