Role:

This is an egress rule of the port. Here you can choose Access, Trunk or Hybrid. Trunk means the outgoing packets must carry VLAN tag header. Access means the outgoing packets carry no VLAN tag header. If packets have double VLAN tags, one will be dropped and the other will still be left. As to Hybrid, it is similar to Trunk, and both of them will tag- out. When the port is set to Hybrid, its packets will be untagged out if the VID of the outgoing packets with tag is the same as the one in the field of Untag VID of this port.

Untag VID:

Valid range is 0~4094. It works only when Role is set to Hybrid.

Fig. 3-36

User can apply Tag Rules by select Port No. and click Edit,

Rule1: Drop frame from nonmember port

Rule2: Drop untagged frame

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LevelOne GSW-0890 user manual