Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Reexamination Certificate
2002-07-02
2008-08-05
Chan, Wing F. (Department: 2619)
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
C370S232000, C370S413000
Reexamination Certificate
active
07408876
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 egress queue manager on another blade where each blade is connected via a backplane switch. When a blade becomes congested, egress queues mapped to a destination on the congested blade also become congested. The egress queue managers determine when to reduce or resume the packet sending rates of egress queues mapped to destinations on congested blades using a messaging scheme. Each egress queue manager maintains notifications of the status of egress queue congestion on its own and other blades. Normal rates of dequeuing packets are resumed only when the related congestion on all of the blades has subsided.
REFERENCES:
patent: 5483522 (1996-01-01), Derby et al.
patent: 5633861 (1997-05-01), Hanson et al.
patent: 5787071 (1998-07-01), Basso et al.
patent: 5949784 (1999-09-01), Sodder
patent: 6031843 (2000-02-01), Swanbery et al.
patent: 6118761 (2000-09-01), Kalkunte et al.
patent: 6625121 (2003-09-01), Lau et al.
patent: 6697368 (2004-02-01), Chang et al.
patent: 6772222 (2004-08-01), Gallo et al.
patent: 6907001 (2005-06-01), Nakayama et al.
patent: 6973032 (2005-12-01), Casley et al.
patent: 7027457 (2006-04-01), Chiussi et al.
patent: 7103041 (2006-09-01), Speiser et al.
patent: 7130271 (2006-10-01), Sekihata
patent: 2002/0034181 (2002-03-01), Kalkunte et al.
patent: 2002/0107908 (2002-08-01), Dharanikota
patent: 2002/0176431 (2002-11-01), Golla et al.
patent: 2002/0186703 (2002-12-01), West et al.
patent: 2003/0058880 (2003-03-01), Sarkinen et al.
patent: 2003/0099193 (2003-05-01), Liu et al.
patent: 2003/0128703 (2003-07-01), Zhao et al.
patent: 2003/0147387 (2003-08-01), Devi et al.
patent: 2004/0037223 (2004-02-01), Harrison et al.
patent: 2301433 (2000-03-01), None
Nick McKeown, “White Paper: a Fast Switched Backplane for a Gigabit Switched Router”, Business Communications, Dec. 1997, Printed from www.bcr.com on Jan. 9, 2002, 35pgs.
Chueh Justin
Gupta Rajarshi
Kasinathan Meera
Swenson Erik
Tangirala Ravi
Blakely , Sokoloff, Taylor & Zafman LLP
Chan Wing F.
Extreme Networks
Tsegaye Saba
LandOfFree
Method and apparatus for providing quality of service across... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for providing quality of service across..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for providing quality of service across... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4008788