EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 63)

Test Setup - Test Applications
Power Blazer 51
Smart Loopback
Smart Loopback
Allows transmitting back the received Ethernet stream of data while
interchanging the source and destination MAC addresses, IP addresses,
and/or UDP/TCP ports. However in Transparent (Pseudo-Physical) mode
the Smart Loopback operates as a physical loopback by transmitting all
received frames unaltered and without discrimination.
The Smart Loopback test can be created locally (refer to Ethernet Test
Applications on page 63) or remotely using an EXFO unit (refer to Discover
Remote Button on page 498) or a Third-Party device (see Third-Party
Remote Loopback on page 52).

Typical Smart Loopback test application:

Supported Interfaces/Rates: 10M to 100G.
Network
under test
Testing Unit Smart Loopback Unit
FTB/IQS-88000 Series FTB/IQS-88000 Series