EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 359)

Test Results
Power Blazer 347
S-OAM and MPLS-TP OAM
S-OAM and MPLS-TP OAM
From the Test menu, tap Results, and the S-OAM or MPLS-TP OAM tab.
Loopback

Status displays the status of the test function (refer to page 386).

TX LBM indicates the count of transmitted LBM frames.

RX LBR indicates the count of valid LBR frames received. A valid frame
for S-OAM has its source MAC address matching the Peer MEP MAC
address, destination MAC address matching the unit port MAC address,
and VLANs matching the unit port VLANs. A valid frame for MPLS-TP
OAM has its destination MAC address matching either the unit MAC
address, FF:FF:FF:FF:FF:FF, or 01:00:5E:90:00:00; VLANs matching the
unit port VLANs; and MPLS Labels matching the local MPLS Label
Stack configuration.

LBR Timeout
For connectivity verification (Continuous check box cleared), indicates
the count of LBR Timeout event which occurs if a reply (LBR frame
with matching Transaction ID) to a transmitted LBM frame is not
received within 5 seconds.
For diagnostic test (Continuous check box selected), indicates the
difference between the transmitted LBM frames and the received LBR
frames.

Invalid LBR
For connectivity verification (Continuous check box cleared), indicates
the count of LBR frames received from the peer MEP with incorrect
MEG/MD Level or with an unexpected Transaction ID.
For diagnostic test (Continuous check box is selected), indicates the
count of LBR frames received from the peer MEP with incorrect
MEG/MD Level.