Patent
1994-12-28
1996-12-03
Beausoliel, Jr., Robert W.
G01R 3128, G06F 1100
Patent
active
055816894
ABSTRACT:
Restoration guide information is set on design of a network in data bases of terminal nodes of a current path. When a failure is detected during operation, establishment of a restoration path is tried by connecting a series of adjacent mergers in accordance with the restoration guides. If connection of adjacent mergers according to the restoration guides is impossible due to a multiple failure, the connection is tried by using associate mergers. When the restoration path is reestablished from an associate merger to the merger, similar processes are repeated. If two or more restoration paths are obtained during progress of restoration, one final restoration path is selected for use in the restoration in accordance with a predetermined reference. Link resources are released except for those connected in the final restoration path.
REFERENCES:
patent: 4956835 (1990-09-01), Grover
patent: 5173689 (1992-12-01), Kusano
patent: 5218601 (1993-06-01), Chujo
patent: 5371744 (1994-12-01), Campbell
Kawamura et al., "Self-healing ATM Network Techniques Utilizing Virtual Paths", Networks '92, May 1992, pp. 129-134.
Fujii et al., "Transfer Mechanisms and Operation of Self-healing Algorithms in ATM Networks", NTT Telecommunication Networks Laboratories, pp. 231-241 .
Okazaki Hiroyuki
Slominski Miroslaw M.
Beausoliel, Jr. Robert W.
NEC Corporation
Snyder Glenn
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