Low Level Network Traffic Analyser

[Marco]

Hi all,

I am new to this mailing list and hope it is the right place to place
my question. If not, I am thankful for suggestions where to place it
instead.

I have to connect to a phy using a FPGA. So far, the FPGA only
implements the Data Link Layer. On top of that, the data is just
looped back to the sending computer. I use a package generator tool to
send data.

Now I want to test if the implementation of the Data Link Layer
together with the loopback works correctly. Therefore I am searching a
tool to capture the traffic on the network card of the computer. I
want something to capture the outgoing and incoming traffic so that I
am able to compare these.

I thought of tcpdump but I am not sure if it is able to capture
traffic on such a low layer. Can tcpdump do that? If not, what other
tools could you recommend?

Thanks a lot in advance!

--
Best regards,
 Marco
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