Hi
untagged interface is an access port if thats what you mean ? or setup and use native vlan thats untagged too
Access—The interface is an untagged member of a single VLAN. A port configured in this mode is known as an access port.
Trunk—The interface is an untagged member of one VLAN at most, and is a tagged member of zero or more VLANs. A port configured in this mode is known as a trunk port.
This is also known as the 'native VLAN'. The switch assigns any untagged frame that arrives on a tagged port to the native VLAN. If a frame on the native VLAN leaves a trunk (tagged) port, the switch strips the VLAN tag out.