On my SG200-26 switch (firmware version 1.4.2.4), I have changed the default VLAN from 1 to 20. I have removed every trace I can find of VLAN 1 in the switch's configuration, yet when I try to delete VLAN 1, I get this error:
"VLAN 1: VLAN can not be deleted because IP Interface or DHCP relay is defined on the VLAN.."
What else do I need to do to be able to delete VLAN 1?
