Method for congestion management in a frame relay network and a node in a frame relay network
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United States of America Patent
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Jun 10, 1997
Grant Date -
N/A
app pub date -
Aug 1, 1995
filing date -
Dec 14, 1992
priority date (Note) -
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Abstract
A method for congestion management in a frame relay network, in which a virtual channel associated with a frame to be transferred is determined. In other to provide a congestion management method which is reliable and capable of rapid responding and which allows even virtual connections to be prioritized with respect to the throughput probability, (a) at least some of the virtual channels are assigned a respective service level; (b) a congestion level having values in a predetermined relationship to the values of the service levels is determined for a network resource liable to congestion; (c) the value representing the service level of the virtual channel of the FR frame (39) is compared with the value representing the congestion level of the network resource; and (d) when the result of the comparison falls outside a predetermined value range, the frame is discarded.
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