EXFO FTB/IQS-85100G Packet Blazer for FTB-500/IQS-600 - Manual (Page 125)

Test Setup - Test Configurator, Timer, and System
Packet Blazer 115
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)
IPv4 20 bytes
IPv6 40 bytes