TGPS-9164GT-M12 Series User
Manual
ORing Industrial Networking Corp
64
VLAN tag, and the tag is removed.
S-port
: the EtherType of all received frames is changed to
0x88a8 to indicate that double-tagged frames are being
forwarded across the switch. The switch will pass these frames on
to the VLAN indicated in the outer tag. It will not strip the outer
tag, nor change any components of the tag other than the
EtherType field.
S-custom-port
: the EtherType of all received frames is changed
to value set in the Ethertype for Custom S-ports field to indicate
that double-tagged frames are being forwarded across the switch.
The switch will pass these frames on to the VLAN indicated in the
outer tag. It will not strip the outer tag, nor change any
components of the tag other than the EtherType field.
Unaware
: all frames are classified to the Port VLAN ID and tags
are not removed
Ingress Filtering
Enable ingress filtering on a port by checking the box. This
parameter affects VLAN ingress processing. If ingress filtering is
enabled and the ingress port is not a member of the classified
VLAN of the frame, the frame will be discarded. By default,
ingress filtering is disabled (no check mark).
Frame Type
Determines whether the port accepts all frames or only
tagged/untagged frames. This parameter affects VLAN ingress
processing. If the port only accepts tagged frames, untagged
frames received on the port will be discarded. By default, the field
is set to All.
Port VLAN Mode
The allowed values are
None
or
Specific
. This parameter affects
VLAN ingress and egress processing.
If
None
is selected, a VLAN tag with the classified VLAN ID is
inserted in frames transmitted on the port. This mode is normally
used for ports connected to VLAN-aware switches. Tx tag should
be set to Untag_pvid when this mode is used.
If
Specific
(the default value) is selected, a port VLAN ID can be
configured (see below). Untagged frames received on the port are
classified to the port VLAN ID. If VLAN awareness is disabled, all
frames received on the port are classified to the port VLAN ID. If
the classified VLAN ID of a frame transmitted on the port is
different from the port VLAN ID, a VLAN tag with the classified