Changing Mgmt port settins on a LTM through GUI

can u try?

root@edelweiss(Active)(tmos) modify net interface mgmt media ?
Values:
  10000ER-FD
  10000LR-FD
  10000SR-FD
  10000T-FD
  1000LX-FD
  1000T-FD
  1000T-HD
  1000X-FD
  100TX-FD
  100TX-HD
  10T-FD
  10T-HD
  auto
  no-phy
  none

for GUI you can go to interfaces under system ....you wont be able to see it directly in interfaces so click on stats and then you can see the mgmt ports as well in the list.....then you change the duplex setting on mgmt interfaces

for GUI you can go to interfaces under system ....you wont be able to see it directly in interfaces so click on stats and then you can see the mgmt ports as well in the list.....then you change the duplex setting on mgmt interfaces