EXFO FTB-800 Series for FTB-1 - Manual (Page 165)

Test Setup - Test Configurator, Timer, and System
NetBlazer 155
MAC/IP/UDP
MPLS
Note: MPLS is only available when the MPLS Label is enabled; refer to Modify
Frame Structure on page 152.

Label allows the selection of the MPLS TX labels: 0 to 1048575 (default
is 16). Refer to for the list of MPLS labels.

COS allows the selection of the Class Of Service.
0 (000 - Low) (default)
1 (001 - Low)
2 (010 - Low)
3 (011 - Low)
4 (100 - High)
5 (101 - High)
6 (110 - High)
7 (111 - High)

TTL allows the selection of the Time to Live value: 0 to 255 (default
is 128).