Huawei Eth-Trunk Manual Load Balancing Mode: Active Links and LACP Boundary
Short answer
C In manual load balancing mode, no LACPDUs are exchanged and all active Eth-Trunk member interfaces forward data and load balance traffic.
Question
Key Takeaways
The question tests the boundary between manual load balancing and LACP mode: manual mode has no LACP negotiation and no max-active-link election, so all configured members remain active.
Huawei Eth-Trunk link aggregation in manual load balancing mode uses no LACPDUs and keeps all member interfaces active. The correct statement is C: all active interfaces forward data and load balance traffic.
Common mistake: The most plausible wrong choice is D, assuming you can set the number of active interfaces as in LACP mode; manual mode has no active-interface election—all member links are active—so D is wrong.
Expert Analysis
The dividing line: negotiation or no negotiation
Huawei Eth-Trunk link aggregation has two main working modes: manual load balancing and LACP. The boundary is whether LACPDUs are exchanged and whether active interfaces are elected. Manual load balancing is static: member interfaces are bundled by configuration and no LACP negotiation occurs. This immediately rules out A, which says both ends send LACPDUs; that describes LACP mode, not manual mode.
Active-interface behaviour in manual mode
Because manual mode has no LACP election, there is no negotiated set of active links to limit; all configured member interfaces are active and forward data, with traffic distributed across them. That is exactly what C states. D is the common trap: the max active-linknumber concept exists in LACP mode, where you can control how many selected links are active while others stay standby. Importing that knob into manual load balancing confuses the two modes.
Why B is not the manual-mode rule
B applies an active-interface maximum to manual load balancing. A numerical cap on active interfaces is an LACP-mode mechanism, not a property of static manual bundling; manual mode has no active-interface election. Comments on this item show the expected confusion: some argue for B by applying a four-active-interface cap, while others lean toward D because they doubt every link forwards at once. Huawei's documented behaviour is that all active links participate in forwarding. Therefore the only true statement is C.
Exam Strategy
For Huawei link-aggregation questions, first classify the mode: manual mode is static and has no LACPDU exchange, while LACP mode negotiates and selects active links with max active-linknumber. Then eliminate options that import LACP behaviours—LACPDU transmission, active-link limits, or setting active-interface count—into manual mode. In manual mode expect the simple rule that all member interfaces are active and participate in load balancing.
Frequently Asked Questions
Does Huawei Eth-Trunk manual load balancing mode send LACPDUs?
Can you set the number of active interfaces in manual load balancing mode?
Is the number of active interfaces limited to four in manual mode?
Community Votes
100% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 6 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 6
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hafizhou 👍 2D is correct
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Fmoura17 👍 1 Answered CC. No modo de balanceamento de carga manual, todas as interfaces ativas encaminham dados e balanceiam o tráfego. A ❌ – LACPDUs são enviados no modo LACP, não no modo manual. O modo manual não possui negociação LACP. B ❌ – Não há limite rígido de quatro interfaces ativas no modo manual; esse limite se aplica ao modo LACP (máx. 8 links membros, 4 ativos). C ✅ – No modo manual, todas as interfaces membros ficam ativas e participam simultaneamente do encaminhamento e do balanceamento de tráfego. D ❌ – Definir limite de interfaces ativas (com outras em standby) é uma característica do modo LACP, não do modo manual.
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Mze 👍 1B is corrrect https://www.google.com/search?q=A+maximum+active+interfaces+can+be+configured+in+manual+load+balancing+mode&sca_esv=584316335&rlz=1C1CHBF_enZA1051ZA1055&sxsrf=AM9HkKlorcu94AfNxMZdfEeVOcjklQSGfg%3A1700624178187&ei=MnddZZaRC4rEgAbmsYfACw&ved=0ahUKEwiW8qXg1taCAxUKIsAKHebYAbgQ4dUDCBA&uact=5&oq=A+maximum+active+interfaces+can+be+configured+in+manual+load+balancing+mode&gs_lp=Egxnd3Mtd2l6LXNlcnAiS0EgbWF4aW11bSBhY3RpdmUgaW50ZXJmYWNlcyBjYW4gYmUgY29uZmlndXJlZCBpbiBtYW51YWwgbG9hZCBiYWxhbmNpbmcgbW9kZUgAUABYAHAAeACQAQCYAQCgAQCqAQC4AQPIAQD4AQL4AQHiAwQYACBB&sclient=gws-wiz-serp
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foetus 👍 1I would also choose D as correct. While C is partially correct, its not said that all links would forward data simultaneously which is what the answer suggests. Most setups would use round-robin or hashing to distribute traffic over the links.
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lkhjk 👍 1C is correct: Manual mode When an Eth-Trunk is operating normally, all links are active and participate in data forwarding. If one active link fails, traffic is load balanced among the remaining active links.
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Chleong 👍 1 Answered CSupport ccccc
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