We recently bought 3 x870 switches. We are testing the switches and found the problem bellow. When utilizing the port 21 the link doesn't work. All the other ports work ok, but. the port 21 doesn't work. We try to use tranceiver of 100G and 40 G and changed the optic cord, but, the problem persist.
I would like to know if someone found the same problem and i would like that Extreme testing this in its lab.
Thanks.
