ingress port belongs to, this packet will be dropped. When the VLAN-tagged packets are forwarded by the Tagged port, its VLAN tag will not be changed.

¾PVID

PVID (Port VLAN ID) is the default VID of the port. When the switch receives an un-VLAN-tagged packet, it will add a VLAN tag to the packet according to the PVID of its received port and forward the packets.

When creating VLANs, the PVID of each port, indicating the default VLAN to which the port belongs, is an important parameter with the following two purposes:

1When the switch receives an un-VLAN-tagged packet, it will add a VLAN tag to the packet according to the PVID of its received port

2PVID determines the default broadcast domain of the port, i.e. when the port receives UL packets or broadcast packets, the port will broadcast the packets in its default VLAN.

Different packets, tagged or untagged, will be processed in different ways, after being received by ports of different link types, which is illustrated in the following table.

 

 

 

 

 

 

Receiving Packets

 

 

 

Forwarding Packets

 

 

Port Type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Untagged Packets

 

 

Tagged Packets

 

 

Untagged

 

 

Tagged

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Packets

 

 

Packets

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The

packet

 

The

packet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

will

be

 

Untagged

 

 

 

 

 

 

 

 

 

 

 

 

will

be

 

forwarded

 

 

 

 

 

 

 

 

 

 

 

 

 

forwarded

 

after

 

 

 

 

 

 

 

 

 

 

 

If the VID of packet is

 

 

 

 

 

 

 

 

When

untagged

 

 

unchanged.

 

removing its

 

 

 

 

 

allowed by the port,

 

 

 

 

 

VLAN tag

 

 

 

 

packets

are received,

 

the

packet

will

be

 

The

packet

 

 

 

 

 

 

 

 

the port will add the

 

received.

 

 

 

 

 

 

 

 

 

 

 

default

VLAN

tag,

i.e.

 

If the VID of packet is

 

will

be

 

The

packet

 

 

 

 

the PVID

of

the

 

 

 

 

 

 

 

ingress

port,

to

the

 

forbidden by the port,

 

forwarded

 

will

be

 

 

 

 

 

 

with

the

 

forwarded

 

Tagged

 

 

packets.

 

 

 

the

packet

will

be

 

 

 

 

 

 

 

 

 

 

dropped.

 

 

 

PVID

of

 

with

its

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

egress port

 

current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

as its VLAN

 

VLAN tag.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tag.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 6-1 Relationship between Port Types and VLAN Packets Processing IEEE 802.1Q VLAN function is implemented on the VLAN Config pages.

6.1.1 VLAN Config

On this page, you can configure the 802.1Q VLAN and its ports.

Choose the menu VLAN→802.1Q VLAN→VLAN Config to load the following page.

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TP-Link TL-SG2008 manual Vlan Config, ¾ Pvid