CTC Union FSW3208M, Руководство пользователя

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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 press "
Apply " button, the screen will show a new tag-based VLAN Group table, on the contrary, a
tag-VLAN will be vanished if user delete 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.
The first time you turn on this device, all ports belong to default VLAN ID group (VID=1), so
they can communicate with 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 press "
Apply " button.