Exfo BV10 Performance Endpoint Unit Manuel d'utilisateur Page 80

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Test Applications
74 BV10
Smart Loopback Test
Smart Loopback Test
The Smart Loopback feature loops back the stream of data
(frames/packets). It retransmits incoming frames/packets after exchanging
the source and destination addresses as well as ports at multiple layers
(Ethernet MAC, IP, and UDP/TCP).
Smart Loopback can be enabled (default) or disabled. Refer to
smart-loopback enable|disable on page 70 for more information.
Modes
The Smart Loopback mode limits the address/port swapping to a specific
layer. The BV10 supports the following Smart Loopback modes:
UDP/TCP (default) – Swap MAC addresses, IP addresses, UDP or TCP
ports when present and addressed to the unit’s TEST port MAC/IP
address. In other words, swap from Layer 2 up to Layer 4 when
present.
IP – Swap MAC addresses, IP addresses when present and addressed
to the unit’s TEST port MAC/IP address. In other words, swap from
Layer 2 up to Layer 3 when present.
Ethernet – Swap MAC addresses when addressed to the unit’s TEST
port MAC address. In other words, swap Layer 2 when present.
Ethernet All Unicast – Swap MAC addresses when the address is
unicast, regardless of the unit’s MAC address.
Refer to smart-loopback mode ethernet-all-unicast|ethernet|ip|udp-tcp on
page 70 for more information.
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