Multiplex communications – Fault recovery – Bypass an inoperative station
Reexamination Certificate
2003-05-28
2008-03-18
Kizou, Hassan (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative station
C370S225000, C709S239000
Reexamination Certificate
active
07345991
ABSTRACT:
A protection mechanism capable of providing both local and end-to-end connection protection for dual homed access/aggregation devices or customer-edge devices in a network. The protection mechanism provides end-to-end and fast local protection for off the shelf access devices that do not have any built in per-connection protection capabilities. The access device is connected via two separate physical uplinks to two edge switches of the network. For each connection to be protected, a main path is provisioned from one edge switch and an alternative path is provisioned from the other edge switch. The edge switches are adapted to comprise means for switching traffic from the main path to the alternative path in the event a failure along the main path is detected. Failures both in the stack portion, the core portion and in the access device uplinks are protected against.
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Raz Yaron
Shabtay Lior
Atrica Israel Ltd.
Kizou Hassan
Rutkowski Jeffrey M
Zaretsky Howard
Zaretsky Patent Group PC
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