how to access ethernet port using matlab

i need to establish a point to point communication using ethernet, we are just sending the frames without using TCP/ip protocol. Now, how to access the frames coming from ethernet using MATLAB??.can anybody say the list of matlab commands used.?

Answer 1

[Vidhi Agarwal]

Hi Sai Pavan,

In Newer versions of MATLAB one way to access and process Ethernet frames directly in MATLAB without using the TCP/IP protocol is by using low-level packet capture tools or libraries that MATLAB can interface with. One common approach is to use the “pcap” (packet capture) library along with MATLAB.

You can follow bellow steps to move forward with it.

1. Install the ‘WinPcap’ or ‘Npcap’ libraries to ensure packet capture at low level. MATLAB has a support package for packet capture, which you can download and install.
2. MATLAB provides functions to interface with ‘pcap’ files and capture live packets.
3. Use the pcap functions to capture live packets.

You can also refer to this file exchange which some functions to work with *.pcap-files.

• https://www.mathworks.com/matlabcentral/fileexchange/109069-libpcap-tools-for-matlab?s_tid=ta_fx_results

For detailed understanding of ‘pcapReader’, please refer to the following documentation:

• https://www.mathworks.com/help/5g/ref/pcapreader.html

Hope that helps!

[Walter Roberson]

Because TCP provides reliable transport with advanced features such as windowing and packet reordering, I do not recommend replacing it with home-brew packet transmission code. At most replace it with udp