TGPS-9084GT-M12 Series User
Manual
ORing Industrial Networking Corp
65
VLAN ID will be inserted in the frame.
Port VLAN ID
Configures the VLAN identifier for the port. The allowed range of
the values is 1 through 4095. The default value is 1.
Note: The port must be a member of the same VLAN as the port
VLAN ID.
Tx Tag
Determines egress tagging of a port.
Untag_pvid
: all VLANs
except the configured PVID will be tagged.
Tag_all
: all VLANs are
tagged.
Untag_all
: all VLANs are untagged.
Introduction of Port Types
Below is a detailed description of each port type, including Unaware, C-port, S-port, and
S-custom-port.
Ingress action
Egress action
Unaware
The function of
Unaware can
be used for
802.1QinQ
(double tag).
When the port receives untagged frames, an
untagged frame obtains a tag (based on PVID)
and is forwarded.
When the port receives tagged frames:
1. If the tagged frame contains a TPID of
0x8100, it will become a double-tag frame and
will be forwarded.
2. If the TPID of tagged frame is not 0x8100
(ex. 0x88A8), it will be discarded.
The TPID of a frame
transmitted by
Unaware port will be
set to 0x8100.
The final status of the
frame after egressing
will also be affected by
the Egress Rule.
C-port
When the port receives untagged frames, an
untagged frame obtains a tag (based on PVID)
and is forwarded.
When the port receives tagged frames:
1. If the tagged frame contains a TPID of
0x8100, it will be forwarded.
2. If the TPID of tagged frame is not 0x8100
(ex. 0x88A8), it will be discarded.
The TPID of a frame
transmitted by C-port
will be set to 0x8100.
S-port
When the port receives untagged frames, an
untagged frame obtains a tag (based on PVID)
and is forwarded.
When the port receives tagged frames:
1. If the tagged frame contains a TPID of
0x8100, it will be forwarded.
The TPID of a frame
transmitted by S-port
will be set to 0x88A8.
