What Are the Differences in APs' Layer 2 and Layer 3 Access to ACs?

user_2790689 · Created Apr 27, 2017 02:10:01

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Adamcolob · Created Apr 27, 2017 03:03:02

In Layer 2 access mode, an AP broadcasts a probe frame to discover ACs.
l In Layer 3 access mode, an AP discovers ACs using DHCP Option 43 or DNS.
– When Option 43 is used, an AP obtains an AC's IP address when the AP obtains its
own IP address. Then the AP sends a unicast probe frame to the AC to discover the
AC.
– When DNS is used, an AP obtains its own IP address, the DNS server's IP address,
and AC's domain name. Then the AP sends a domain name resolution request to the
DNS server. After the DNS server resolves the AC's IP address based on the
domain name, the AP can sends a unicast packet to the AC to discover the AC.

What Are the Differences in APs' Layer 2 and Layer 3 Access to ACs?

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What Are the Differences in APs' Layer 2 and Layer 3 Access to ACs?

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