sending and receiving raw ethernet packet to/from embedded system

Since you mentioned MSDN, I am assuming you are working in a win32 environment,although I am somewhat confused by your "...to/from embedded system."

You can use winpcap for this purpose (this is a windows port of the famous libpcap library):

You will find an example here:

I have read there were some limitations with this port, but this should not be an issue in your case.

If you are happy with winpcap, please take some time reading the original paper written by Van Jacobson and Steven McCanne: ftp://ftp.ee.lbl.gov/papers/bpf-usenix93.ps.Z

The original package for Unixes is available here:

Jean Tabel

snipped-for-privacy@gmail.com wrote:

While the other poster mentioned a way to do what you want, your aproach IMHO is asking for trouble. Well, you may have good reasons (like testing only), but if this is the aproach choosen to operate a final product I would reconsider basing it on ethernet alone.

Consider using UDP, since by doing so you are not liekly to "violate" network setups in those envireonements your platform is suposed to operate. UDP does not actually mean you have to implement a lot of stuff on your embedded platform. In fact implementing it is straight foreward and lightweight. It generally will increase the interoperability of your system by a great deal. I.e. when it comes to routing etc. At the same time you also will be able to directly talk to the platform using normal socket functionality - on all platforms - including windows, unix systems apple etc. etc.

Just my 2¢ though

Markus