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STP

MSTP

TTL

Repeat frame number detection

After the Option 43 field is configured, the AP sends unicast Discovery Request packets only to the AC IP address passed by the Option 43.

If the AC that the option 43 advertises the IP address does not respond to the AP, the AP finds that the AC fails.

To configure the option 43 field, you need to advertise the IP address of the primary AC and the standby AC to which the AP belongs. You also need to advertise the IP addresses of other primary ACs.

Configure the DHCP server option 43 parameter field. The command for the IP address of the primary AC and the standby AC is option 43 sub-option 2 ipaddress &

After an AC is configured as the Master Controller, it is added to the roaming group by default, and can manage other ACs.

The Master Controller delivers instructions to managed ACs through the CAPWAP tunnel.

Master Controller is a logical role. Any AC can be configured as the Master Controller.

Each AC must have a Master Controller specified.

The same security policy

Same SSID

The same data forwarding mode

The same service VLAN