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公开(公告)号：EP1222517A4
公开(公告)日：2007-03-21
申请号：EP00957270
申请日：2000-08-24
Applicant: IBM
Inventor： BARKER KENNETH JAMES , BASS BRIAN MITCHELL , CALVIGNAC JEAN-LOUIS , HEDDES MARCO C , SIEGEL MICHAEL STEVEN , TROMBLEY MICHAEL RAYMOND , VERPLANKEN FABRICE JEAN
CPC classification number: H04L29/06 , H04L49/1507 , H04L49/45 , H04L69/12
Abstract: A network processor (10) useful in network switch apparatus and methods of operating such a processor (10) in which data flow handling and flexibility is enhanced by the cooperation of a plurality of interface processors (16, 34) formed on a semiconductor substrate. The interface processors (16, 34) provide data paths for inbound and outbound data flow and operate under the control of instructions stored in an instruction store formed on the semiconductor substrate.
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公开(公告)号：DE69624088T2
公开(公告)日：2003-06-18
申请号：DE69624088
申请日：1996-07-22
Applicant: IBM
Inventor： BADGER RYAN LANCE , BARKER KENNETH JAMES , NICHOLS PAUL HENRY , SCHROTER RUSSELL EVAN , STACY JOHN KENNETH , WARTSKI MARK CRANE
Abstract: The system includes an adapter processor and control memory device included in the adapter. A device is provided for establishing transmit and receive control registers in the control memory. A device is used for receiving data cells from the network for storage as frames on received ready lists in system memory. A device is incorporated for establishing a transmit ready queue (TRQ) in the control memory. Transmit ready queue (TRQ) identifies frames for transmission on a received ready list. A device is provided for establishing in system memory a transmit complete list (TCL). A device is further included for generating an interrupt to the device driver indicating frame transmission complete and updating the TCL.
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公开(公告)号：CA2429151A1
公开(公告)日：2002-07-25
申请号：CA2429151
申请日：2002-01-17
Applicant: IBM
Inventor： BARKER KENNETH JAMES , DAVIS GORDON TAYLOR , JEFFRIES CLARK DEBS , RINALDI MARK ANTHONY , SUDEEP KARTIK
Abstract: The decision to discard or forward a packet is made by a flow control mechanism, upstream from the forwarding engine in the node of a communication network. The forwarding engine includes a switch with mechanism to detect congestion in the switch and return a binary signal B indicating congestion or no congestion. The flow control mechanism uses B and other network related information to generate a probability transmission table against which received packets are tested to determine proactively whether a packet is to be discarded or forwarded.
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Patent Agency Ranking
公开(公告)号：AT453974T
公开(公告)日：2010-01-15
申请号：AT02732096
申请日：2002-01-17
Applicant: IBM
Inventor： BARKER KENNETH JAMES , DAVIS GORDON TAYLOR , JEFFRIES CLARK DEBS , RINALDI MARK ANTHONY , SUDEEP KARTIK
Abstract: The decision to discard or forward a packet is made by a flow control mechanism, upstream from the forwarding engine in the node of a communication network. The forwarding engine includes a switch with mechanism to detect congestion in the switch and return a binary signal B indicating congestion or no congestion. The flow control mechanism uses B and other network related information to generate a probability transmission table against which received packets are tested to determine proactively whether a packet is to be discarded or forwarded.
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公开(公告)号：DE69624088D1
公开(公告)日：2002-11-07
申请号：DE69624088
申请日：1996-07-22
Applicant: IBM
Inventor： BADGER RYAN LANCE , BARKER KENNETH JAMES , NICHOLS PAUL HENRY , SCHROTER RUSSELL EVAN , STACY JOHN KENNETH , WARTSKI MARK CRANE
Abstract: The system includes an adapter processor and control memory device included in the adapter. A device is provided for establishing transmit and receive control registers in the control memory. A device is used for receiving data cells from the network for storage as frames on received ready lists in system memory. A device is incorporated for establishing a transmit ready queue (TRQ) in the control memory. Transmit ready queue (TRQ) identifies frames for transmission on a received ready list. A device is provided for establishing in system memory a transmit complete list (TCL). A device is further included for generating an interrupt to the device driver indicating frame transmission complete and updating the TCL.
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公开(公告)号：DE60234903D1
公开(公告)日：2010-02-11
申请号：DE60234903
申请日：2002-01-17
Applicant: IBM
Inventor： BARKER KENNETH JAMES , DAVIS GORDON TAYLOR , JEFFRIES CLARK DEBS , RINALDI MARK ANTHONY , SUDEEP KARTIK
Abstract: The decision to discard or forward a packet is made by a flow control mechanism, upstream from the forwarding engine in the node of a communication network. The forwarding engine includes a switch with mechanism to detect congestion in the switch and return a binary signal B indicating congestion or no congestion. The flow control mechanism uses B and other network related information to generate a probability transmission table against which received packets are tested to determine proactively whether a packet is to be discarded or forwarded.
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公开(公告)号：AT334520T
公开(公告)日：2006-08-15
申请号：AT02747299
申请日：2002-05-03
Applicant: IBM
Inventor： BARKER KENNETH JAMES , CLAUBERG ROLF , CALVIGNAC JEAN LOUIS , HERKERSDORF ANDREAS GUENTHER , VERPLANKEN FABRICE JEAN , WEBB DAVID JOHN
Abstract: The present invention relates to a device for combining at least two data signals having an input data rate into a single data stream having an output data rate being higher than the input data rate for transmission on a shared medium or vice versa, particularly, to a single SDH/SONET framer capable of handling a large range of SDH/SONET frames from STM-i to STM-j with an aggregated total capacity corresponding to an STM-j frame where i and j are integers in the range from 1 to 64 or higher according to the STM-N definition of the SDH/SONET standards. More over, the present invention can also be extended to work with STS-1 as lowest range. STS-1 exists in SONET only not SDH and corresponds to a data rate of 51.5 Mb/s a third of the 156 Mb/s of STM-1. The device according to the present invention comprises at least two ports for receiving and/or sending said at least two data signals, a port scanning unit for extracting data from the data signals received by said ports and/or synthesizing data to be transmitted via the ports, respectively, whereby said port scanning unit is configured to extract data from ports providing data streams having at least two different input data rates and/or to synthesize data to be transmitted via the ports taking data streams having at least two different data rates.
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公开(公告)号：CA2429151C
公开(公告)日：2006-07-25
申请号：CA2429151
申请日：2002-01-17
Applicant: IBM
Inventor： BARKER KENNETH JAMES , DAVIS GORDON TAYLOR , RINALDI MARK ANTHONY , JEFFRIES CLARK DEBS , SUDEEP KARTIK
Abstract: The decision to discard or forward a packet is made by a flow control mechanism, upstream from the forwarding engine in the node of a communicatio n network. The forwarding engine includes a switch with mechanism to detect congestion in the switch and return a binary signal B indicating congestion or no congestion. The flow control mechanism uses B and other network related information to generate a probability transmission table against which received packets are tested to determine proactively whether a packet is to be discarded or forwarded.
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