What are the differences in APs' Layer 2 and Layer 3 access to ACs

- In Layer 2 access mode, an AP broadcasts a probe frame to discover ACs.

- In Layer 3 access mode, an AP discovers ACs using DHCP Option 43 or DNS.
a) When Option 43 is used, an AP obtains an AC's IP address when the AP obtains its own IP address. Then

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