8- and 24-Port Gigabit L2 Managed Power-over-Ethernet (PoE) Switches
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4.4.4 Ports
Function name: VLAN Port Configuration
Function description: In VLAN Tag Rule Setting, users can input the VID number for each port. The VID numbers range from 1 to
4094. Users also can assign ingress filtering rules to each port. There are two ingress filtering rules that apply to the switch. The
Ingress Filtering Rule 1 is “forward only packets with VID matching this port’s configured VID.” The Ingress Filtering Rule 2 is “drop
untagged frame.” You can also select each port’s role: Access, Trunk, or Hybrid.
Figure 4-31. VLAN port configuration screen.
Parameter description: Port 1-8: Port number.
VLAN Aware: Forward packets based on IEEE 802.1Q VLAN tag.
Ingress Filtering: Discard other VLAN group packets, only forward packets belonging to this VLAN group.
Frame Type: All: Forward all tagged and untagged packets.
Tagged: Forward tagged packets only and discard untagged packets.
PVID: This PVID range is 1–4094. Before you set a number x as PVID, you must create a Tag-based VLAN with VID x. For example, if
port x receives an untagged packet, the switch will apply the port x’s PVID (assume it is VID y) to tag this packet, and the packet
then will be forwarded as a tagged packet with VID y.
Role: This is a port egress rule. Choose Access, Trunk, or Hybrid. Access means the outgoing packets carry no VLAN tag header.
Trunk means the outgoing packets must carry a VLAN tag header. If packets have double VLAN tags, one will be dropped and the
other will not be dropped. Hybrid is similar to Trunk, and both will tag-out. When the port is set to Hybrid, its packets will be
untagged if the outgoing packets’ tagged VID is the same as the one in this port’s Untagged VID.
Untag VID: Valid range is 1–4094. It works only when Role is set to Hybrid.
Double Tag: Double-tag mode belongs to the tag-based mode; however, it would treat all frames as untagged, which means that
tags with PVID will be added into all packets. Then, these packets will be forwarded as a Tag-based VLAN. The incoming packets
with tag will become the double-tag ones. Scroll to enable the function. The default is Disable.