EXFO FTB-8500 Series for FTB-500 - Manual (Page 508)

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494 FTB-8500 Series and FTB-8120NGE/8130NGE
Frame Size Configuration
The following table lists each component that may affect the minimum
size value.
For Random type, the frame size range is from 64 to 1518 bytes.
However, the minimum frame size will be adjusted according to the
frame structure and components selected. See above table for
components that may affect the minimum frame size value. The
maximum frame size value is also adjusted for PBB-TE (+18 bytes),
B-VLAN (+ 4 bytes), and VLAN (+4 bytes per VLAN).
Note: Sending traffic with frame size >1518 in switched network may result in
losing these frames.

Quantity: For EMIX type, select the quantity of frame sizes to be used
for the test. Choices are 2 through 8; default is 5.

Restore Default: For EMIX type, reverts the quantity and frame sizes to
their default values.
Component Description
VLAN 4 bytes per VLAN (up to 3 VLAN)
PBB-TE 18 bytes
B-VLAN 4 bytes
MPLS 4 bytes per label (up to two labels)
UDP 8 bytes
TCP 20 bytes
Ethernet Header 14 bytes
LLC and SNAP Headers 8 bytes
IPv4
20 bytes
IPv6 40 bytes