Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Patent
1997-09-23
2000-12-26
Kizou, Hassan
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
370232, 370237, 370389, H04L 512
Patent
active
061670278
ABSTRACT:
A preventive X.25 flow control mechanism for use in a high speed packet switching network where calls are multiplexed on network trunks with each connection using a reserved amount of the total bandwidth. X.25 data terminal equipments access the network via access nodes. Each access node includes a Leaky Bucket component which maintains a refillable token pool. Each time an incoming packet is received by the leaky bucket component, the number of available tokens is compared to two predetermined threshold values. If the number of tokens is less than the low threshold, acknowledgments of received packets are stopped, inducing an interruption of packets transmitted by the emitting attached X.25 terminals. Interrupting packet transmission will lead to a regeneration of the number of tokens in the token pool. If the number of tokens reaches the high threshold, acknowledgments are again generated to restore packet transmissions. The first and second thresholds are greater than zero, reducing the chances that a packet will be marked as being discardable.
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patent: 5625622 (1997-04-01), Johri
Aubert Denis
Chabannet Anne
Legoll Jean-Jacques
Mariotti Rene
Plattier Edmond
Cisco Technology Inc.
Kizou Hassan
Slavitt Mitchell
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