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Capturing CDP packets over USB C? [closed]

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Hi Guys,

Don't know if it's possible, but I would like to capture CDP packets over USB C. I have HP Elite X2 and unfortunately it doesn't have Ethernet port so I am using I-TEC USB-C/RJ45 converter. Looks like I am getting USB traffic, but is there any way to convert it to more usable data?

Majkel's avatar
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Majkel
asked 2019-01-15 10:36:34 +0000
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Closed for the following reason "the question is answered, right answer was accepted" by Majkel 2019-01-17 06:58:03 +0000

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1 Answer

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CDP is a protocol that runs over Ethernet; it doesn't directly run over USB.

libpcap supports capturing raw USB traffic on several platforms; if that's what you're doing, that's probably not the best way to capture protocols running over Ethernet, such as CDP.

If your "converter" is really a USB-based Ethernet adapter, it should show up in Wireshark as an Ethernet interface. Try capturing on that rather than on a USB bus.

Guy Harris's avatar
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Guy Harris
answered 2019-01-15 19:08:21 +0000
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