Star network implementation

[kmakhil90]

Hi,

Give me an idea to implement a star network with Router as a central node and many esp's as slave devices. I need to communicate with 2 esp's through router without internet connectivity in local network.

[iot-bits.com]

If you plan to use ESP as a standalone chip, and don't want to use a host MCU... you should write your applications using the nonOS SDK and use espconn APIs to communicate to other ESP chips via the router.
First you will need a mechanism to find other ESPs IP address in the network, which you can easily do via SSDP or simple, just use broadcast messages every once in a while to let all ESPs know which IP is a ESP device.