EXFO MAX-800 Series, User Manual

Page: 189 / 495

Test Setup - Test Configurator, Timer, and System
MaxTester
181
Smart Loopback
Smart Loopback
Note: The Smart Loopback block is only displayed when the Transparent
(Pseudo-Physical ) check box is cleared (see
Loopback Mode
on page 76).
From the Test menu, tap Setup , Test Configurator , and the Smart
Loopback block.
Loopback

Mode
determines at which layer the Smart Loopback address/port
swapping operation will be.

Ethernet
swaps the MAC addresses of received packets having
their Destination MAC address matching the MAC address of the
loopback port.

Ethernet (All Unicast) swaps the MAC addresses of received
packets having Unicast
Destination MAC
address.

IP , for Ethernet Layer 3 and 4, swaps the MAC and IP addresses of
received packets having their
Destination IP
address matching the
IP address of the loopback port. For Ethernet Layer 2, swaps the
MAC addresses
for packets having their
Destination MAC
address
matching the MAC address of the loopback port.

UDP/TCP
(default), for Ethernet Layer 4, swaps the UDP or TCP
ports and the MAC and IP addresses of received packets having
their
Destination IP
address matching the IP address of the
loopback port. For Ethernet Layer 3, swaps the MAC and IP
addresses for packets having their
Destination IP
address
matching the IP address of the loopback port. For Ethernet Layer 2,
swaps the
MAC addresses
for packets having their
Destination
MAC address matching the MAC address of the loopback port.

Matching & Swapping
indicates the Loopback parameters that will be
used based on the Loopback Mode selected.