EXFO FTB-800 Series for FTB-1 - Manual (Page 181)

Test Setup - Test Configurator, Timer, and System
NetBlazer 171
RFC 2544 - Global
The following table lists each component that may affect the minimum
size value.
Restore RFC 2544 Defaults
Reverts the configured parameters to their default values.
Component Description
VLAN 4 bytes per VLAN tag (up to 3 VLAN tags)
LLC and SNAP Headers 8 bytes
IPv4
20 bytes
IPv6 40 bytes