Multiplex communications – Diagnostic testing – Path check
Patent
1997-09-26
1999-05-04
Vu, Huy D.
Multiplex communications
Diagnostic testing
Path check
370249, 370397, 370410, H04J 312, H04L 1256
Patent
active
059011416
ABSTRACT:
A telecommunications network such as an ATM, Frame Relay or packet based network will be better managed by identifying nodes through which a virtual connection is routed between two end nodes. A new method of tracing the nodes on the route includes sending trace cells downstream of a monitoring node toward one or both end nodes. Each downstream node either loops back a trace cell identifying itself to the monitoring node or forwards the trace cell further. A plurality of trace cells sent along the route identify nodes located thereon. In one embodiment, the trace cell is an extension of the ATM FMOAM cell (ATM Fault Management OAM cell) specified for loopback functions.
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Gruber John Gerald
Methiwalla Asghar Ebrahim
Vickers Richard
Northern Telecom Limited
Vu Huy D.
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