2.1.4 Tag-based VLAN
Tag-based VLAN is another kind of VLAN which is a group of ports marked as same kind by assigning a
tag-value on each port. Same as port-based VLAN, different VLAN (different ID) can’t communicate to each
other, and before the setting, there is a default tag-based VLAN, which ID is 1 (VLAN ID = 1). So, if user wants
to create another new tag-based VLAN, better set another VLAN ID rather than 1 (tag-based VALN ID ranged
from 1 ~ 4094). After pressing “Apply” button, the screen will show a new tag-based VLAN Group table, on the
contrary, a tag-VLAN will be vanished if user deletes a VLAN group.
Two important things must be
emphasized here,
one is that tag-based VLAN members are valid not only within same device, but also cross
the devices as long as they are with same VLAN ID; the other important thing is user must keep in mind that
the
VLAN ID of CPU port must be one of the VLAN group if user wants to manage through one of the
ports of that VLAN group
.
Otherwise, if there is no port with same VLAN ID as CPU port, the web
management, in-band control, will be failed because different VLAN (different ID) can’t communicate to each
other.
A default diagram is shown below.
When you first turn on this device, all ports belong to default VLAN ID group (VID = 1), so they can
communicate to each other, and hence any port can be used as web management port to talk with CPU port
inside. But, for example, assume user uses port 1 as web management port, then user create VLAN ID = 10 on
port 7, 8 and create another VLAN ID = 20 on port 5, 6. Now 3 VLAN groups will be shown on VLAN group
table after he presses “Apply” button.
AirLive Ether-GSH8TW v2 / 8TW+v2 User’s Manual
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