Method of tracing virtual path operation information and apparat

Details Method of tracing virtual path operation information and apparat Method of tracing virtual path operation information and apparat

1992-11-13

1994-08-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, H04L 1256

Patent

active

053373073

ABSTRACT:
Virtual path operation information of each of the stations of an synchronous transfer mode telecommunications network is traced using OAM cells. OAM cells used for operation and maintenance control of the asynchronous transfer mode telecommunication network have a pointer indicative of the position where virtual path operation information is recorded and an area for storing virtual path operation information of a certain number of stations. Each station records virtual path operation information in an OAM cell, updates the pointer and sends the OAM cell to the next station on a selected path. When the payload of the OAM cell becomes full, the OAM cell records new OAM cell generation request information and the pointer is changed to the final value and is sent to the next station. A station which receives the OAM cell erases the new OAM cell generation request information, transfers the received OAM cell, generates a new OAM cell, initializes the pointer, and transfers the new OAM cell which has its own virtual path operation information to a next station.

REFERENCES:
patent: 5003533 (1991-03-01), Watanabe
patent: 5056085 (1991-10-01), Vu
patent: 5084867 (1992-01-01), Tachibana et al.
patent: 5199027 (1993-03-01), Barri
Matsunaga et al., "Proposed Virtual Path Tracing Function in ATM Networks", (1991) (partial translation).

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