Chapter
3: Web Management
VLANs
PoE Switch User Manual | 162
Port VLAN
Determines the port's VLAN ID (a.k.a. PVID). Allowed VLANs are in the range 1 through 4095,
default being 1.
On ingress, frames get classified to the Port VLAN if the port is configured as VLAN unaware,
the frame is untagged, or VLAN awareness is enabled on the port, but the frame is priority
tagged (VLAN ID = 0).
On egress, frames classified to the Port VLAN do not get tagged if Egress Tagging
configuration is set to untag Port VLAN.
The Port VLAN is called an "Access VLAN" for ports in Access mode and Native VLAN for
ports in Trunk or Hybrid mode.
Port Type
Ports in hybrid mode allow for changing the port type, that is, whether a frame's VLAN tag is
used to classify the frame on ingress to a particular VLAN, and if so, which TPID it reacts on.
Likewise, on egress, the Port Type determines the TPID of the tag, if a tag is required.
Unaware:
On ingress, all frames, whether carrying a VLAN tag or not, get classified to the Port VLAN,
and possible tags are not removed on egress.
C-Port:
On ingress, frames with a VLAN tag with TPID = 0x8100 get classified to the VLAN ID
embedded in the tag. If a frame is untagged or priority tagged, the frame gets classified to the
Port VLAN. If frames must be tagged on egress, they will be tagged with a C-tag.
S-Port:
On ingress, frames with a VLAN tag with TPID = 0x8100 or 0x88A8 get classified to the
VLAN ID embedded in the tag. If a frame is untagged or priority tagged, the frame gets
classified to the Port VLAN. If frames must be tagged on egress, they will be tagged with an
S-tag.
S-Custom-Port:
On ingress, frames with a VLAN tag with a TPID = 0x8100 or equal to the Ethertype
configured for Custom-S ports get classified to the VLAN ID embedded in the tag. If a frame
is untagged or priority tagged, the frame gets classified to the Port VLAN. If frames must be
tagged on egress, they will be tagged with the custom S-tag.