Note the spaces when using the “range” command:
FTOS(conf)#interface range Tengigabitethernet 0/1 – 32
FTOS(conf-if-range-te-0/1-32)#
FTOS(conf-if-range-te-0/1-32)#
For VLAN configuration there are no spaces …. :
FTOS(conf)#interface vlan 900
FTOS(conf-if-vl-900)#untagged Tengigabitethernet 0/52-56
FTOS(conf-if-vl-900)#end