Multiplex communications – Fault recovery – Bypass an inoperative station
Reexamination Certificate
2006-11-28
2006-11-28
To, Doris H. (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative station
C370S249000, C370S404000
Reexamination Certificate
active
07142504
ABSTRACT:
A system and apparatus for transmitting transit data through a network with first and a second rings coupling two or more nodes. In one aspect, when the first ring is intact and the second ring has a fault between two nodes, transit data may be wrapped from a second, faulted ring to a first, intact ring at an upstream node adjacent to a fault, and transit data may be maintained on the first, intact ring between the upstream node and a downstream node adjacent to the fault. In another aspect, when the system has a fault between any two nodes, the system may preserve host data.
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D. Tsiang and G. Suwala, RFC 2892, The Cisco SRP MAC Layer Protocol, Cisco Systems, Aug. 2000, pp. 1-52.
Campbell Stephenson Ascolese LLP
Cisco Technology Inc.
Moore Ian N.
To Doris H.
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