7 Further Readings
the ”
reset_device_settings
” command. Power cycle the device after running the latter command
successfully in order to clear any runtime state (PHY registers, inject/disrupt features).
6 Known Problems
• If no ethernet is connected, or there are no packets on the wire at all, the host tool may not terminate
properly, even if Wireshark is terminated. This happens because the host tool will never write to the
pipe to Wireshark. The host tool will continue to run in the background, and will block access to the
device. In this case, the LED will continue blinking, and you may have to kill the host tool manually.
This problem should not occur with host tool v1.2, which has a workaround that terminates it after
a one second timeout.
• If extcap is used, and start of capture fails (such as inaccessible device), Wireshark does not termi-
nate gracefully. This seems to be a Wireshark issue.
• If extcap is used, and capturing errors (such as unplugging the Ethernet Debugger device), Wire-
shark does sometimes not notice that capturing terminated.
• If extcap is used, Wireshark sometimes gets into a mode in which the Wireshark GUI seems to
indicate that capturing started correctly, but the host tool is blocked trying to open Wireshark’s
extcap control pipes. Restarting Wireshark helps (you may need to kill the blocked ”nose” process
as well).
• Firmware versions before 1.08 had issues with 10/100 MBit modes.
If you encounter problems, always update to the latest firmware version and host tool, available here
.
7 Further Readings
7.1 White Papers
7.1.1 Ethernet Debugger Timing
The Ethernet Debugger can be used to intercept and capture traffic between two Ethernet devices. The
device is normally not supposed to affect the Ethernet traffic itself. But for technical reasons, the device
can affect the traffic by introducing additional latency and jitter compared to a simple Ethernet cable. This
effect is minimal, but can matter for real time applications such as PTP. The goal of this document is to
provide information about the introduced latency and jitter, as well as actual measurements.
Online-Link
, PDF-Download
7.2 Statements
7.2.1 Letter of Volatility
This letter describes volatile, non-volatile, and storage media on the specified product. Customers can
use this document to comply with security requirements and equipment handling procedures.
Online-Link
, PDF-Download
Document version: 101 / Okt 06, 2022 15:41
6
https://intona.eu/en/products/ethernet-debugger#downloads
7
https://intona.eu/doc/in3038wp
8
https://intona.eu/doc/in3038wp/pdf
9
https://intona.eu/doc/in3037st
10
https://intona.eu/doc/in3037st/pdf
26
