TP-Link T2500G-10MPS, Руководство пользователя

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Configuration Guide 180
Configuring 802.1Q VLAN 802.1Q VLAN Configuration
Link Type Select the link type of the port. It is Access by default.
ACCESS :
The port can only be added to one VLAN and is usually connected to a
terminal device that does not support VLAN, a host for example.
When receiving frames:
•
The port accepts untagged frames and adds a VLAN tag with the PVID to
the frames.
•
The port accepts the tagged frames if the frames’ VLAN IDs match its
PVID.
•
The port drops the tagged frames if the frames’ VLAN IDs differ from its
PVID.
When forwarding frames:
•
The port forwards the frames without tag.
TRUNK :
The port can be added to more than one VLAN and is usually connected to an
intermediate device, such as a switch or a router, to carry traffic in different
VLANs.
When receiving frames:
•
The port adds a VLAN tag with the PVID to the untagged frames, and then
decides to accept or drop the frame according to whether the PVID is in
the port’s allowed VLAN list.
•
The port accepts the tagged frames if the frames’ VLAN ID are in its
allowed VLAN list.
•
The port drops the tagged frames if the frames’ VLAN ID are not in its
allowed VLAN list.
When forwarding frames:
•
Normally, the port forwards the frames with tags. If the frames’ VLAN tags
match its PVID, the port will forward the frames without tag.
GENERAL :
The port can be added to more than one VLAN and is usually connected to
an intermediate or terminal device. You can configure the egress rule on
the VLAN > 802.1Q VLAN > VLAN Config page according to the connected
device.
When receiving frames:
•
The behavior of a General port is the same with that of a Trunk port.
When forwarding frames:
•
The port decides to forward the frames with or without tag according to
the egress rule. You need to specify the egress rule as tagged or untagged
when adding the port to each VLAN.
PVID Set the default VLAN ID of the port. The valid values are from 1 to 4094. It is
used mainly in the following two ways:
•
When the port receives an untagged packet, the switch inserts a VLAN tag
to the packet based on the PVID.
•
When the port receives an untagged UL packet or an untagged broadcast
packet, the switch broadcasts the packet within the default VLAN.
LAG Displays the LAG (Link Aggregation Group) which the port belongs to.