Hello,
I have RB 751U-2HnD, and I have problems with LAN ports. I have my own network with 8 computers. I connected 3 computers to RB751 directly and other 5 to switch. I check cables and everything is OK. For example I have traffic on two LAN ports (two computers) and switch, and in the same time one of my 3 LAN ports (connection on one computer) goes down and after 10 sec goes up, but other LAN ports (other computers) work OK. And after few sec another one LAN port goes up and down. It looks like some kind of bug or something like that.
Please can you help me…