EXFO FTB-800 Series for FTB-1 - Manual (Page 178)

Test Setup - Test Configurator, Timer, and System
168 FTB-700G/800 Series
Network
VLAN
VLAN Tag check box, when selected (cleared by default), enables and
allows to set up to 3 stacked VLANs.
For each VLAN tag enabled, C-VLAN / S-VLAN / E-VLAN, the following
parameters are configurable.

VLAN ID: Enter the VLAN ID. Choices are 0 through 4095; refer to VLAN
ID and Priority on page 575 for more information.

Priority: Select the VLAN user priority. Choices are 0 to 7; default is 0
(000 - Low Priority). Refer to VLAN ID and Priority on page 575 for
more information.

Type: Allows the selection of the VLAN Ethernet Type. Choices are
0x8100 (default for C-VLAN), 0x88A8 (default for S-VLAN), 0x9100
(default for E-VLAN), 0x9200, and 0x9300.

Drop Eligible, when set to Yes (DEI = 1), the transmitted frames will
be dropped first on receipt when congestion occurs under test. Drop
Eligible is not available when VLAN type is 8100. This setting is set to
No by default.