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.
Abstract: An apparatus and methods for testing a passive optical network with regard to fiber connectivity and attenuation losses, and with regard to the proper operation of packet-based communication protocols thereon.
Type:
Grant
Filed:
March 7, 2006
Date of Patent:
July 13, 2010
Assignee:
Anritsu Instruments Company
Inventors:
Martin Matthew Ofalt, Howard D. Sins, Sergey Panasyuk, Lars D. Pedersen