This project started in late 2010 and completed in May 2011. Although the difficulty of the project is not high, it is the project which delayed much because the correspondence of the supplier is too late.
W5300 It is a function that one channel is set based on MAC and all Ethernet signals are transmitted to the opposite Ethernet controller.
Basically, there are two pairs, and main use place is installed in police car and it is used for radio and other communication purposes.
STM32F103ZE, W5300, 100MHz switch hub
For more detail, go to http://www.doobeesoft.co.kr/doobeesoft/Performed_Projects.html