Apparatus and method for performing a loopback test in a...

Details Apparatus and method for performing a loopback test in a... Apparatus and method for performing a loopback test in a...

2004-09-01

2008-08-05

Pham, Chi H. (Department: 2616)

Multiplex communications

Diagnostic testing

Loopback

C370S248000, C370S242000

Reexamination Certificate

active

07408883

ABSTRACT:
The invention is test apparatus and methods for performing loopback tests. The tests involve generating a packet-based test message having a source address and a destination address. When the test message arrives at the destination, the addresses are exchanged and the message is returned to the source. The addresses can be level 2 addresses, such as MAC addresses, and/or level 3 addresses, such as IP addresses. The returned message and the propagation properties observed for the test message can be used to determine information about the network being tested.

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