Method and apparatus for correcting a defect in a token ring net

Details Method and apparatus for correcting a defect in a token ring net Method and apparatus for correcting a defect in a token ring net

1995-07-28

1997-02-11

Chin, Wellington

Multiplex communications

Fault recovery

Bypass an inoperative station

370248, 371 206, 34082516, H04J 314

Patent

active

056028270

ABSTRACT:
Beacon recovery is performed separately on each module. After a module recognizes that a beacon condition has occurred, each module checks to determine if the defect or fault is on its module. If the defect is on the respective module, the module disconnects itself from the remaining modules in the network and transmits a beacon frame onto an upstream end of the group of stations on that module. Each port on the module is then tested to determine if the error lies in the corresponding station. This testing is based on the presence or absence of the beacon frame.

REFERENCES:
patent: 4710915 (1987-12-01), Kitahara
patent: 4899142 (1990-02-01), Nakayashiki et al.
patent: 5319644 (1994-06-01), Liang
patent: 5361250 (1994-11-01), Nguyen et al.
patent: 5535192 (1996-07-01), Trubey et al.

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