How to configure vlan_id & that port how can be access port with vlan_

[madharam]

 execute command in switchport mode access and switchport access vlan_id but its showing untagged port in cisco sg300-28 switch.

[balaji.bandi]

• Tagged — The interface is a member of the chosen VLAN and packets sent from this interface destined to the chosen VLAN will have the packet tagged with the VLAN ID. The Tagged radio button is not enabled for interfaces in Access mode if the chosen VLAN is the Default VLAN. If there are no untagged VLANs on an interface, the interface automatically joins the internally used VLAN 4095.
• Untagged — The interface is a member of the chosen VLAN and packets sent from this interface destined to the chosen VLAN will not be tagged with the VLAN ID. If the interface is in Access or Trunk mode, the Default VLAN is automatically excluded when the interface joins the VLAN as Untagged.

check below guide to help you :

https://www.cisco.com/c/en/us/support/docs/smb/switches/cisco-small-business-200-series-smart-switches/smb80-vlan-configuration-on-the-200-300-series-managed-switches.html