Alaxala AX2200S Series Configuration Manual page 278

17 VLANs
Figure 17-2 Tagged-frame format
The following table describes the fields for VLAN tags.
Table 17-5 VLAN tag fields
field
TPID (Tag Protocol
ID)
User Priority
CF
(Canonical Format)
VLAN ID
The Switch uses the same user priority for frames forwarded that it uses for received
frames. The default value of the user priority is as follows:

When the received frame is a forwarded frame: The default value is 3.

When the received frame is a frame originated by the Switch: The default value is 7.
Also, the user priority for sent frames can be changed by configuration. For details about
how to change the user priority, see the following:

Forwarded frames: 3.4 Description of marking in the Configuration Guide Vol. 2

Frames originated by the Switch: 3.10 Explanation of user priority for self-generated
frames in the Configuration Guide Vol. 2
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Description
An Ether Type value indicating that the
IEEE 802.1Q VLAN tag continues
Indicates the IEEE 802.1D priority.
Indicates whether the MAC address in
the MAC header follows a standard
format.
Indicates the VLAN ID.
Conditions for the Switch
The Switch does not support setting of
TPIDs, so it operates with TPIDs fixed
to 0x8100.
Eight priority levels can be selected for
configuration.
The Switch supports only standard (0)
formats.
VLAN IDs from 1 to 4094 can be used.