Method of tracing the route of virtual connections
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United States of America Patent
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May 4, 1999
Issued Date -
N/A
app pub date -
Sep 26, 1997
filing date -
Apr 11, 1995
priority date (Note) -
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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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