If that is the difference and one is working and the other is not then I would suggest matching the configs across the floors. Is there a reason why the floors are set up differently?
I am running Dell Power Connect 5548 & 5524 in a stack arrangement over 3 floors. I have an issue on the middle floor whereby DHCP addresses are not being issued to clients in vlan 90 See below   GFLOOR interface gigabitethernet1/0/48 channel-group 1 mode on switchport mode general switchport general allowed vlan add 40,50,70,80,90 tagged switchport general allowed vlan add 1 untagged interface gigabitethernet2/0/48 channel-group 1 mode on switchport mode general switchport general allowed vlan add 40,50,70,80,90 tagged switchport general allowed vlan add 1 untagged!interface Port-channel1 description LAG_TO_TOP_FLOOR switchport mode general switchport general allowed vlan add 40,50,70,80,90 tagged switchport general allowed vlan add 1 untagged 1FLOOR interface gigabitethernet1/0/48 channel-group 1 mode on switchport mode general switchport general allowed vlan add 40,50,70,80 tagged switchport general allowed vlan add 1,90 untagged interface gigabitethernet2/0/48 channel-group 1 mode on switchport mode general switchport general allowed vlan add 40,50,70,80 tagged switchport general allowed vlan add 1,90 untagged interface gigabitethernet3/0/24 switchport access vlan 50interface Port-channel1 description LAG_TO_TOP_FLOOR switchport mode general switchport general allowed vlan add 40,50,70,80 tagged switchport general allowed vlan add 1,90 untagged   Do i just need to type on the 1Floor interfaces or do I need to take 90 off untagged first then add to tagged afterwards switchport mode general switchport general allowed vlan add 40,50,70,80,90 tagged switchport general allowed vlan add 1 untagged thanks ANDY
vlan tagged vs vlan untagged