Based on HP
You can configure the link type of a port as access, trunk, or hybrid. The link types use the following VLAN tag handling methods:

• Access: an access port can forward packets from only one VLAN and send these packets untagged. An access port can connect a terminal device that does not support VLAN packets or is used in scenarios that do not distinguish VLANs.
• Trunk: a trunk port can forward packets from multiple VLANs. Except packets from the port VLAN ID (PVID), packets sent out of a trunk port are VLAN-tagged. Ports connecting network devices are typically configured as trunk ports.
• Hybrid: a hybrid port can forward packets from multiple VLANs. The tagging status of the packets forwarded by a hybrid port depends on the port configuration. A hybrid port can connect a network device or terminal device that can identify packets tagged with some VLANs.

The PVID identifies the default VLAN of a port. Untagged packets are transmitted through the default VLAN.

When you configure the PVID on a port, follow these guidelines:

• An access or trunk port sends packets from the default VLAN untagged.
• A hybrid port can send packets from the default VLAN tagged or untagged.
• An access port can join only one VLAN. The VLAN to which the access port belongs is the PVID of the port.
• A trunk or hybrid port supports multiple VLANs and the PVID configuration.

Based on Cisco:
Each port or LAG is marked with one of the following modes:

• Access: port belongs to a single untagged VLAN. When a port is in Access mode, the packet types that are accepted on the port (packet type) cannot be designated. It is not possible to enable/disable ingress filtering on an access port.
• Trunk: port can be member of one or more VLANs. It is an untagged member of at most one VLAN, and is a tagged member of all other VLANs of which it is a member.
• General: port can be tagged or untagged and be members of one or more VLAN. (full 802.1Q mode).

For each port or LAG (Link Aggregation Group), select one of the following values:

• Forbidden: port is not able to join the VLAN even if it is was dynamically added using a protocol such as GVRP.
• Excluded: port is not a member of the VLAN. However, the interface can be added to the VLAN through GVRP. This option is not available for the default VLAN.
• Untagged: interface is an untagged VLAN member. Packets forwarded by the interface are untagged.
• Tagged: interface is a tagged member of a VLAN. All packets forwarded by the interface are tagged and contain VLAN information.

For each port or LAG, one or both of the following values may be selected:

• PVID: port PVID is set to this VLAN.
• Multicast TV VLAN: select to make the port a member of the selected VLAN as a Multicast TV VLAN. This option is grayed out for Trunk and General port modes.