I want to make Automation device, number of simultaneous connections to embedded device required is 20.
Why? You want to support 20 people AT A TIME diddling with the thermostat in your house?
The Arduino can only process one connection at a time. You should write code in such a way that the likelihood of more than 3 pending connections is minimized.
Say I put one device online for demo , then !
Say I put one device online for demo , then !I understand limitation of micricontroller, but wanted to understand bottlenecks of ethernet.Thank You