WO1997004543A3 - Allocated and dynamic switch flow control - Google Patents

Allocated and dynamic switch flow control Download PDF

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Publication number
WO1997004543A3
WO1997004543A3 PCT/US1996/011942 US9611942W WO9704543A3 WO 1997004543 A3 WO1997004543 A3 WO 1997004543A3 US 9611942 W US9611942 W US 9611942W WO 9704543 A3 WO9704543 A3 WO 9704543A3
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WO
WIPO (PCT)
Prior art keywords
flow control
allocated
message
buffers
dynamic bandwidth
Prior art date
Application number
PCT/US1996/011942
Other languages
French (fr)
Other versions
WO1997004543A2 (en
Inventor
Stephen A Caldara
Stephen A Hauser
Thomas A Manning
Original Assignee
Ascom Nexion Inc
Stephen A Caldara
Stephen A Hauser
Thomas A Manning
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ascom Nexion Inc, Stephen A Caldara, Stephen A Hauser, Thomas A Manning filed Critical Ascom Nexion Inc
Priority to PCT/US1996/011942 priority Critical patent/WO1997004543A2/en
Priority to JP9506879A priority patent/JPH11510009A/en
Priority to AU67125/96A priority patent/AU6712596A/en
Priority to EP96927240A priority patent/EP0839421A4/en
Publication of WO1997004543A2 publication Critical patent/WO1997004543A2/en
Publication of WO1997004543A3 publication Critical patent/WO1997004543A3/en

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    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
    • H04L2012/5681—Buffer or queue management
    • H04L2012/5682—Threshold; Watermark
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
    • H04L2012/5681—Buffer or queue management
    • H04L2012/5683—Buffer or queue management for avoiding head of line blocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5685—Addressing issues
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence

Abstract

A method and apparatus are disclosed for eliminating cell loss in a network switch through the use of flow control of both allocated and dynamic bandwidth. When output buffers (28) in the switch become filled to a predetermined threshold level a feedback message (30) is provided to input buffers (26) to prevent transmission of cells from the input buffers to the output buffers. In order to provide connection and traffic type isolation the buffers are grouped into queues and flow control may be implemented on a per queue basis. The feedback message is a digital signal including an ACCEPT/REJECT message and a NO-OP/XOFF message. An XOFF message can be received while transmitting via allocated bandwith or dynamic bandwidth.
PCT/US1996/011942 1995-07-19 1996-07-18 Allocated and dynamic switch flow control WO1997004543A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/US1996/011942 WO1997004543A2 (en) 1995-07-19 1996-07-18 Allocated and dynamic switch flow control
JP9506879A JPH11510009A (en) 1995-07-19 1996-07-18 Assignable and dynamic switch flow control
AU67125/96A AU6712596A (en) 1995-07-19 1996-07-18 Allocated and dynamic switch flow control
EP96927240A EP0839421A4 (en) 1995-07-19 1996-07-18 Allocated and dynamic switch flow control

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US149895P 1995-07-19 1995-07-19
US60/001,498 1995-07-19
PCT/US1996/011942 WO1997004543A2 (en) 1995-07-19 1996-07-18 Allocated and dynamic switch flow control

Publications (2)

Publication Number Publication Date
WO1997004543A2 WO1997004543A2 (en) 1997-02-06
WO1997004543A3 true WO1997004543A3 (en) 1997-04-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/011942 WO1997004543A2 (en) 1995-07-19 1996-07-18 Allocated and dynamic switch flow control

Country Status (4)

Country Link
EP (1) EP0839421A4 (en)
JP (1) JPH11510009A (en)
AU (1) AU6712596A (en)
WO (1) WO1997004543A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE516249C2 (en) * 1997-02-19 2001-12-10 Ericsson Telefon Ab L M Flow control when switching
JP2002064497A (en) 2000-08-15 2002-02-28 Nec Corp Atm switch
US7453897B2 (en) * 2001-10-03 2008-11-18 Global Ip Solutions, Inc. Network media playout
GB2461693B (en) 2008-07-07 2012-08-15 Micron Technology Inc Switching method
US9391910B2 (en) * 2012-07-20 2016-07-12 Cisco Technology, Inc. Smart pause for distributed switch fabric system
CN108419072B (en) * 2018-01-17 2020-08-04 深圳市绚视科技有限公司 Correction method and correction device for naked eye 3D display screen and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090011A (en) * 1988-12-23 1992-02-18 Hitachi, Ltd. Packet congestion control method and packet switching equipment
US5119372A (en) * 1989-05-10 1992-06-02 At&T Bell Laboratories Multi-access ATD multiplexer with congestion detection circuitry
US5412648A (en) * 1992-12-25 1995-05-02 Nec Corporation Packet switching system for forwarding packets from input buffers using idle/busy status of output buffers
US5493566A (en) * 1992-12-15 1996-02-20 Telefonaktiebolaget L M. Ericsson Flow control system for packet switches

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090011A (en) * 1988-12-23 1992-02-18 Hitachi, Ltd. Packet congestion control method and packet switching equipment
US5119372A (en) * 1989-05-10 1992-06-02 At&T Bell Laboratories Multi-access ATD multiplexer with congestion detection circuitry
US5493566A (en) * 1992-12-15 1996-02-20 Telefonaktiebolaget L M. Ericsson Flow control system for packet switches
US5412648A (en) * 1992-12-25 1995-05-02 Nec Corporation Packet switching system for forwarding packets from input buffers using idle/busy status of output buffers

Also Published As

Publication number Publication date
EP0839421A4 (en) 2001-07-18
EP0839421A2 (en) 1998-05-06
AU6712596A (en) 1997-02-18
JPH11510009A (en) 1999-08-31
WO1997004543A2 (en) 1997-02-06

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