For a large-scale campus network exceeding 10,000 wireless terminals, Huawei's V2.0 design guide recommends the Native WAC solution integrated into flagship core switches (such as the CloudEngine S12700E or S16700). In a traditional three-layer hierarchy (Core-Aggregation-Access), the Native WAC (A) is preferred over a standalone AC because it utilizes the core switch's high-performance ENP/Solar chips to process CAPWAP tunnels at line rate, avoiding the traffic bottlenecks often associated with standalone controllers in high-density environments.
(Note: The user's original answer was B, but according to V2.0 Large Campus best practices for 10k+ terminals, Native WAC is the primary recommendation.)
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