# Debug Ethernet issues

You can use the following log types to log and debug issues related to
Ethernet.

| Log type | Purpose |
| --- | --- |
| `dmesg` | Debug issues related to the kernel driver |
| `tcpdump` | Verify the packet transfer |

To debug the issues that may occur during Ethernet bringup, do the
following:

1. Collect the `dmesg` logs to debug the issues related to kernel driver.

dmesg > /var/log/dmesg_logs.txt
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2. Collect the `tcpdump` logs to verify the packet transfer.

tcpdump -i any -s 0 -w /data/tcpdump.pcap
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3. Pull the file after the test.

scp  root@<device_ip_address>:/data/tcpdump.pcap .
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scp  root@<device_ip_address>:/var/log/dmesg_logs.txt .
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Note

When prompted for a password, enter `oelinux123` to authenticate the file transfer via SCP.
4. Collect the output from ethtool, ifconfig, netstat, and IP route
tables for debugging.

    For more information on these tools, see [Tools for Ethernet operations](https://docs.qualcomm.com/doc/80-70018-26/topic/tools-for-ethernet-operations.html#tools-for-ethernet).

Last Published: Apr 10, 2025

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