LACP Actor Election Parameters
Short answer
CD Device priority and MAC address determine the Actor election in LACP mode.
Question
Key Takeaways
The question tests the specific hierarchy of LACP negotiation where System Priority takes precedence over MAC address, while interface-level settings like Interface Priority are irrelevant to device-level Actor selection.
Learn which LACP parameters determine Actor election in Huawei networking exams. Device priority and MAC address are the key factors for Eth-Trunk negotiation.
Common mistake: Candidates often confuse Interface Priority (Option B) with Device/System Priority. Interface Priority determines which links in the bundle are active, not which device controls the negotiation.
Expert Analysis
In Link Aggregation Control Protocol (LACP) mode for Eth-Trunk, the system must elect an Actor and a Partner to ensure consistent configuration negotiation. This election is strictly based on two parameters found within the LACPDUs: System Priority and MAC Address.
First, the Device Priority (System ID priority) is the primary determinant. The device with the lower numeric value for its system priority becomes the Actor. If both devices have different priorities, the one with the lower value wins immediately. This corresponds to option C.
Second, if both devices have the same Device Priority, the tie is broken by comparing their MAC addresses. The device with the lower MAC address value becomes the Actor. This corresponds to option D.
Options A and B are incorrect in this context. Interface number and Interface priority are used to select which physical interfaces become active members of the Eth-Trunk bundle (Active/Standby selection), but they do not determine which device is the Actor or Partner in the LACP negotiation process itself.
Exam Strategy
When analyzing LACP questions, always distinguish between device-level negotiations and link-level selections. Device Priority and MAC address control the Actor/Partner role, while Interface Priority controls Active/Standby status. Memorize this separation to avoid selecting interface-related options for device-level protocol questions.
Frequently Asked Questions
What happens if both Device Priority and MAC address are identical?
Does Interface Priority affect Actor election?
Community Votes
50% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 2 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 2
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Fmoura17 👍 1The correct answers are C and D. C. Device priority ✅ Device priority is the first and primary criterion for Actor election. The device with the lower system priority value wins and becomes the Actor. Default priority is 32768 on Huawei devices. D. MAC address ✅ MAC address is the tiebreaker when two devices have the same device priority. The device with the lower MAC address becomes the Actor.
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Heidorn 👍 1Actor election in LACP mode are done via Priority firstly then MAC addresses, never by interface priority. Interface priority defines the "active interface" on either side, which is responsible for the control data of the LACP link.
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