ESP8266 Community Forum

- Fri Jun 01, 2018 12:39 pm #76202 Hello there,

There are some esp modules on the same wifi network but also too many connections on same network as well. (For example 10-15 different mobile phone or computer and 5 ESP modules on the same router.)
I can list connected devices on the network by their IP address, but how to know which one is ESP or any other device?

I want to define ESP modules on the network, is that possible? Is there a way to know that?

Thanks in advence

- Sat Jun 02, 2018 3:27 am #76221 if you can also get their mac address, you can look for the first 3 bytes that should be the same for esp devices.

- Sat Jun 02, 2018 4:55 am #76224 Your router device list should list devices with mac addresses and ip. They will normally have a default name like ESP_112233 where the number is the last 3 bytes of the mac address.

You can use the router to allocate static ip addresses for their mac addresses which is useful if you want to ensure you can access a particular device at a fixed ip address. The router may aslo allow you to give static ips a more meaningful name.

Although the first 3 bytes of a mac address identify the vendor these are not the same for all ESP modules.

- Sat Jun 02, 2018 5:24 am #76225

if you can also get their mac address, you can look for the first 3 bytes that should be the same for esp devices.

Thanks for your reply but their mac addresses is not same.
there are some tool to check the device vendor by their mac address but this way is not useful