The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2000
Filed:
Sep. 23, 1997
Denis Aubert, Saint Paul de Vence, FR;
Anne Chabannet, Le Bar sur Loup, FR;
Jean-Jacques Legoll, Cagnes sur Mer, FR;
Edmond Plattier, Antibes, FR;
Michel Szczap, La Gaude, FR;
Rene Mariotti, Nice, FR;
Cisco Technology, Inc., San Jose, CA (US);
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.