I'd assume that the problem was there before but v9 doesn't include the feature to show "APs with low link speed" - now after the upgrade EX3 has the option to see issues like that in the controller GUI dashboard... I think no one checks every switch port with a AP for link speed via CLI
🙂
But as I've mentioned it comes down to a detailed problem description or we all could only guess and use our crystall ball.
![3b42f16a31d641d381bdca0e0d85b291_RackMultipart20180514-126543-10nb41x-crystallball_inline.png 3b42f16a31d641d381bdca0e0d85b291_RackMultipart20180514-126543-10nb41x-crystallball_inline.png](/t5/image/serverpage/image-id/5662i9C5032F893724778/image-size/large?v=v2&px=999)