Asynchronous transfer mode layer automatic protection switching

Details Asynchronous transfer mode layer automatic protection switching Asynchronous transfer mode layer automatic protection switching

1998-04-06

1999-11-16

Maung, Zarni

Electrical computers and digital processing systems: multicomput

Multiple network interconnecting

370401, G06F 1516

Patent

active

059875267

ABSTRACT:
In accordance with an embodiment of the present invention, a first asynchronous transfer mode network is provided, adapted to couple with a first entity external to the network, the first entity having a fourth port and a fifth port. The network has a first port. The network also has a second port coupled to the first port by a first permanent virtual connection, and the second port is coupled to the fourth port via a first interface. The network also has a third port coupled to said first port by a second permanent virtual connection, and the third port is coupled to the fifth port via a second interface. Packets are sent between the first port and the second port via the first permanent virtual connection, and between the second port and the fourth port via the first interface until a failure is detected, the failure occurring at the first interface, the second port, or the fourth port. After a failure is detected, packets are sent between the first port and the third port via the second permanent virtual connection, and between the third port and the fifth port via the second interface.

REFERENCES:
patent: 4627070 (1986-12-01), Champlin et al.
patent: 5150360 (1992-09-01), Perlman et al.
patent: 5440538 (1995-08-01), Olsen
patent: 5537642 (1996-07-01), Glowny et al.
patent: 5859959 (1999-01-01), Kimball et al.

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