Is anyone else seeing port flapping on SFP+ ports on CRS328 switches?
I had SFP+ port on my CRS328 (with DAC to my CRS318) flap up to a few times a day. Since the upgrade to ROS 6.43.7 last Friday (on both CRS328 and CRS317 it got a lot better. Have seen the link flap only once since the upgrade.
I also noticed a significant decrease in port flapping on the latest firmware but I’m still getting flaps every hour or so. Now it is 10-20 a day and before it was hundreds.
I have 2 s+rj10 with CRS326 and CSS326, one of the transceivers flaps 10 times everyday and then hang, I have to disable and enable it in interface list of RouterOS to bring it back, another one is relatively stable, it flaps every several weeks and hangs once a month recently.
They are both very sensitive to temperature. I installed a fan inside the switch to cool the sfp+ case directly. the bad one behaves a little better with the fan, and it gets much better when room temperature drops below 20c. but RouterOS update doesn’t help in my case.
I won’t touch mikrotik’s switch any more, besides this issue, the 10G transceiver to 1G port is 20MB/s slow. and vlan was initially broken when I brought these switches. their products are far from enterprise quality , some don’t even match other consumer grade products
Same problem over here with CRS328-4C-20S-4S+RM on Sfp+ ports. I’m connected to a Dell X1052 with S + DA0003.
It is already in the last version and has not changed anything.
Disappointed. 
Just thinking, I have a CRS326, up time currently reported as 51d12h, have zero downtime / flaps on SFP+ port.
Are the flaps not maybe caused by the other side?
I have a CCR1036-8G-2S+ on another 10G port on that same switch and nothing happens, including using the same type of cable.