RB3011UiAS switch1 reset during File Transfer

LAN Port 1 - 5 (switch1) reset/disconnect whatever I doing File Transfer:

Every dip = LAN disconnected
94% complete.png
LAN 1 - 5 (switch 1) reset/disconnect
[MozJPEG] IMG_20210311_015432.jpg
My PC: Intel(R) I211 Gigabit Network Connection
Server: Intel(R) PRO/1000 PT Dual Port Server Adapter

Both are connected directly without Patch Panel

How to solve this problem?

I guess that what you see other victims of same phenomenon call port flopping (interface reset would take longer to recover). Not sure if there’s a definite fix for it though.

After reading port flopping issue,

I had to downgrade from 6.48.1 (stable) to 6.47.9 (long-term)
Then I execute this command:

/interface ethernet switch set switch1,switch2 cpu-flow-control=no

Transfer large file to local server under same switch group, no port reset issue so far,

I test more and comeback here if any update