Fabric extra traffic
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United States of America Patent
Stats
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May 30, 2017
Grant Date -
Sep 15, 2011
app pub date -
Dec 13, 2010
filing date -
Mar 11, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of forwarding traffic through a network node including an ingress IO card, an egress IO card, and a pair of parallel switch fabric cards. One of the switch fabric cards is designated as a working switch fabric card, and the other one of the switch fabric cards is designated as a protection switch fabric card. In the ingress IO card, the traffic flow is divided into a committed information rate (CIR) component and an extra information rate (EIR) signal. Under a normal operating condition of the node, the ingress IO card forwards the CIR traffic component through the working switch fabric card, and forwards the EIR traffic component through the protection switch fabric card. Upon detection of a failure impacting the working switch fabric card, the ingress IO card drops the EIR traffic component and forwards the CIR traffic component through the protection switch fabric card.
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