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:
Oct. 06, 2009
Filed:
Aug. 05, 2002
Rajarshi Gupta, Berkeley, CA (US);
Justin Chueh, Palo Alto, CA (US);
Ravi Tangirala, San Jose, CA (US);
Meera Kasinathan, San Jose, CA (US);
Erik Swenson, San Jose, CA (US);
Rajarshi Gupta, Berkeley, CA (US);
Justin Chueh, Palo Alto, CA (US);
Ravi Tangirala, San Jose, CA (US);
Meera Kasinathan, San Jose, CA (US);
Erik Swenson, San Jose, CA (US);
Extreme Networks, Santa Clara, CA (US);
Abstract
A method and system is provided to enable quality of service across a backplane switch. An egress queue manager on one blade communicates with an ingress queue manager on the same or on another blade where each blade is connected via a backplane switch. The egress queue managers communicate the congestion to ingress queue managers using a messaging scheme. The ingress queue managers determine when to reduce or resume the packet sending rates of ingress queues mapped to congested egress queues or to destinations on congested blades. Each ingress queue manager maintains information about the status of egress queue congestion on its own blades. Normal rates of dequeuing packets from ingress queues are resumed only when the related congestion on all of the egress queues or related destinations has subsided.