A few questions about configuring the CISCO CAP-2700 access point (offline)?

Question

Computer networks

Good afternoon!
Can anyone help with finding a "combat" configuration for an access point in standalone AP mode (no controller).
still a question for what it is necessary to configure the BVI interface?
Can multiple points (2-3) work seamlessly without a controller?

So far I have this:

test config

\\Настроим адрес на сетевом интерфейсе для получения адреса по DHCP

interface gigabitEthernet0
ip address dhcp
exit

\\ Имя точки SSH

hostname APNAME
ip domain name *********
crypto key generate rsa general-keys modulus 2048

\\ Авторизация
enable secret PASSWD
username kronaw privilege 15 secret PASSWD
no username Cisco
exit
wr

\\Можно использовать одно имя SSID для двух диапазонов.

dot11 ssid NAME
authentication open
authentication key-management wpa version 2
guest-mode
wpa-psk ascii 0 PASSWD
exit

\\Настраиваем Wi-Fi 2.4 GHz

interface Dot11Radio0
no ip address
no ip route-cache
encryption mode ciphers aes-ccm
ssid NAME
antenna gain 0
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 spanning-disabled
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
no shutdown
exit

\\Настраиваем Wi-Fi 5 GHz

interface Dot11Radio1
no ip address
no ip route-cache
encryption mode ciphers aes-ccm
ssid NAME
antenna gain 0
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 spanning-disabled
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
no shutdown
exit
exit
wr

Answer 1

Yes, many configurations can be produced.
BVI is bridge. It is usually used to forward traffic from the wire into the air.
Sometimes the management subnet is terminated on it in order to have access to the point itself (ssh/telnet/etc).

Can multiple points (2-3) work seamlessly without a controller?

Depending on what you mean by that.
Theoretically, yes they can. At all points, you configure the same ssid and authorization ... clone in general. Clients, as they are removed, will lose the old point, and switch to a new one. But there will be no roaming, since someone should drag the session from point to point, and this is done by the controller. Without it, sessions will break when switching.
Well, it is worth remembering that these are still different devices that operate at the same frequency. Naturally, they will interfere with each other. Diversity in frequency, channels, and transmitter power control to minimize interference is also handled by the controller.