EXFO FTB-8500 Series for FTB-500 - Manual (Page 232)

Stream Generation Tabs
218 FTB-8500 Series and FTB-8120NGE/8130NGE
MAC
MAC
Note: Only available with Framed Layer 2.
Press TEST, Stream Gen, and MAC.
Stream No.
For Frame Analyzer test, select the stream number from the list. Only
stream number 1 is available for RFC 2544 and BERT tests.
Frame Format

OUI is available when the Data Link is set to 802.3 SNAP and allows
the selection of the Organizationally Unique Identifier (OUI). Choices
are RFC1042, 802.1H, and User Defined (when Network is set to
None).
When User Defined is selected, enter the OUI hexadecimal value
(000000 to FFFFFF).

EtherType is available when Network is set to None and allows to
enter the EtherType hexadecimal value (0000 to FFFF).
Note: Refer to Stream Configuration on page 207 for more information.