Hi Zaman,

welcome to the forums.

"SUSE SLES for SAP Applications" is ambiguous, which *version* are you trying? "cat /etc/os-release" should provide descriptive output.

Could you additionally provide the messages from dmesg/syslog/journal regarding these ports (please include those from first NIC initialization after boot, as well as what is reported when you plug/unplug the cables during your test(s)).

The information from "ip link list", "ethtool <device>" and "ethtool -i <device>" (for both network devices) might be helpful, too.

Regards,
J