Hello Wang,
There is readme file located in <KSDK_PATH>\middleware\tcpip\rtcs\examples\httpsrv and <KSDK_PATH>\middleware\tcpip\rtcs\examples\eth_to_serial that lists the steps needed to run the example.
In this file, step 3 says:
3) Connect the evaluation board and your PC to same Ethernet network.
This instruction requires to do next steps:
- Go to Control Pnale and Select Network and Sharing Center

- Selec the option Change adapter settings on the lef list options

- Modify Local Area connection by right-clicking and select properties.

- At this point, your Ethernet cable needs to be removed from your internet network and connect it to your board.
- In next window, select Internet Protocol Version 4 (TCP/IPv4) and de-select obtain an IP address automatically and instead use a specific IP address: For example 192.168.1.200 (it should be different to your board's IP address) and save these settings.
After this, you should de able to connect to your board. Could you please try these steps as well as others shown in readme file?
I hope this can help you
Best Regards,
Isaac
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