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TRGPS-9084TG-M12X-BP2-MV User
Manual
ORing Industrial Networking Corp
82
limited by the use of Allowed VLANs
Frames classified to a VLAN that the port is not a
member of are discarded
By default, all frames but frames classified to the Port
VLAN (a.k.a. Native VLAN) get tagged on egress.
Frames classified to the Port VLAN do not get
C-tagged on egress
Egress tagging can be changed to tag all frames, in
which case only tagged frames are accepted on
ingress
Hybrid:
Hybrid ports resemble trunk ports in many ways, but adds
additional port configuration features. In addition to the
characteristics described for trunk ports, hybrid ports have
these abilities:
Can be configured to be VLAN tag unaware, C-tag
aware, S-tag aware, or S-custom-tag aware
Ingress filtering can be controlled
Ingress acceptance of frames and configuration of
egress tagging can be configured independently
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