Exfo FTB-800 Series for FTB-1 Manuel d'utilisateur télécharger pdf (Page 67)

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101

Test Setup - Test Applications

NetBlazer 57

Smart Loopback

Third-Party Remote Loopback

The Third-party Remote Loopback feature provides the capability to be

discovered and react to loop-up and loop-down commands from a third

party device. This feature is used for unidirectional testing, where the test

stream is transmitted from the third party device to a remote EXFO device.

The looped back test stream is received and analyzed by the third-party

device.

The third-party loopback supports three level of messages:

 Layer 2: Only MAC addresses are swapped.

 Layer 3: MAC and IP addresses are swapped.

 Layer 4: MAC and IP addresses are swapped along with the UDP port.

To emulate a third-party remote device, the loopback mode is set in the

function of the layer of loop messages received. The loop messages are:

 Layer 2: Ethernet

 Layer 3: IP

 Layer 4: UDP/TCP

On receipt of the third-party loop-up command as per requested layer, the

loopback mode is set and initiated on the module.

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Exfo FTB-800 Series for FTB-1 Manuel d'utilisateur Page 67

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