Espressif Systems ESP Faq page 153

Chapter 4. Software framework
4.10.47 [Connect] What are the specifications of Wi-Fi parameters when using Smart-
Config?
SmartConfig is a method of configuring Wi-Fi parameters via local network broadcasting. Users can
send Wi-Fi account and password to the device through a matching APP. SmartConfig network config-
uration has some requirements on Wi-Fi parameters:
• SSID name: Supports Chinese characters and English letters, digits, with a maximum length of 32
bytes.
• Wi-Fi password: 8-64 digits, case-sensitive.
• Wi-Fi security encryption: Currently, SmartConfig supports WPA, WPA2, and WEP encryption
methods, and does not support open methods without encryption.
4.10.48 [Connect] Does ESP8266 Wi-Fi support WPA2 enterprise-level encryption？
• Yes. Please refer to example wpa2_enterprise.
• To build RADIUS server, you can use FreeRADIUS.
4.10.49 [Connect] What are the low-power modes for ESP32 to maintain its connection
to Wi-Fi?
• In such scenarios, the chip switches between Active mode and Modem-sleep mode automatically, making the
power consumption also varies in these two modes.
• The ESP32 supports Wi-Fi keep-alive in Light-sleep mode, and the auto wakeup interval is determined by the
DTIM parameter.
• Please find examples in ESP-IDF - > examples - > wifi - > power_save.
4.10.50 Do Espressif's chips support WPA3?
• ESP32 series: WPA3 is supported from esp-idf release/v4.1 and enabled by default. Go to menuconfig >
Component config > Wi-Fi for configuration.
• ESP8266: WPA3 is supported from the release/v3.4 branch of ESP8266_RTOS_SDK and enabled by default.
Go to menuconfig > Component config > Wi-Fi for configuration.
4.10.51 [Connect] How does the device choose AP when there are multiple identical SSIDs
in the current environment?
• The device connects to the first scanned AP.
• If you expect to sort APs by signal quality and etc., use the scan function to filter manually.
• If you expect to connect to a specified AP, add BSSID information in connection parameters.
4.10.52 [Connect] Does ESP8266 have repeater solutions?
• We have not officially released such application solutions yet.
• For relay related applications, please find on github. The relay rates should be set basing on real tests.
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