WO2006047092A3 - Active queue management methods and devices - Google Patents

Active queue management methods and devices Download PDF

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Publication number
WO2006047092A3
WO2006047092A3 PCT/US2005/036700 US2005036700W WO2006047092A3 WO 2006047092 A3 WO2006047092 A3 WO 2006047092A3 US 2005036700 W US2005036700 W US 2005036700W WO 2006047092 A3 WO2006047092 A3 WO 2006047092A3
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WO
WIPO (PCT)
Prior art keywords
aqm
voqs
devices
buffer occupancy
drop
Prior art date
Application number
PCT/US2005/036700
Other languages
French (fr)
Other versions
WO2006047092A2 (en
Inventor
Davide Bergamasco
Flavio Bonomi
Valentina Alaria
Andrea Baldini
Original Assignee
Cisco Tech Inc
Davide Bergamasco
Flavio Bonomi
Valentina Alaria
Andrea Baldini
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 Cisco Tech Inc, Davide Bergamasco, Flavio Bonomi, Valentina Alaria, Andrea Baldini filed Critical Cisco Tech Inc
Priority to EP05810800.2A priority Critical patent/EP1805524B1/en
Publication of WO2006047092A2 publication Critical patent/WO2006047092A2/en
Publication of WO2006047092A3 publication Critical patent/WO2006047092A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/30—Flow control; Congestion control in combination with information about buffer occupancy at either end or at transit nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/31—Flow control; Congestion control by tagging of packets, e.g. using discard eligibility [DE] bits

Abstract

Novel methods and devices are provided for AQM of input-buffered network devices. Preferred implementations of the invention control overall buffer occupancy while protecting uncongested individual VOQs. The probability of setting a 'global drop flag' (which is not necessarily used to trigger packet drops, but may also be used to trigger other AQM responses) may depend, at least in part, on the lesser of a running average of buffer occupancy and instantaneous buffer occupancy. In some preferred embodiments, this probability also depends on the number of active VOQs. Moreover, a global drop flag is set in conjunction with a drop threshold M associated with the VOQs. Whether an AQM response is made may depend on whether a global drop flag has been set and whether a destination VOQ contains M or more packets. Different M values may be established for different classes of traffic, e.g., with higher M values for higher-priority traffic. AQM responses (e.g., to drop packets) may be taken more aggressively when there is a larger number of active VOQs.
PCT/US2005/036700 2004-10-22 2005-10-13 Active queue management methods and devices WO2006047092A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05810800.2A EP1805524B1 (en) 2004-10-22 2005-10-13 Active queue management method and device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US62139604P 2004-10-22 2004-10-22
US60/621,396 2004-10-22
US11/155,388 US7602720B2 (en) 2004-10-22 2005-06-16 Active queue management methods and devices
US11/155,388 2005-06-16

Publications (2)

Publication Number Publication Date
WO2006047092A2 WO2006047092A2 (en) 2006-05-04
WO2006047092A3 true WO2006047092A3 (en) 2007-01-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/036700 WO2006047092A2 (en) 2004-10-22 2005-10-13 Active queue management methods and devices

Country Status (3)

Country Link
US (1) US7602720B2 (en)
EP (1) EP1805524B1 (en)
WO (1) WO2006047092A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8238347B2 (en) 2004-10-22 2012-08-07 Cisco Technology, Inc. Fibre channel over ethernet
US8842694B2 (en) 2004-10-22 2014-09-23 Cisco Technology, Inc. Fibre Channel over Ethernet

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7830793B2 (en) 2004-10-22 2010-11-09 Cisco Technology, Inc. Network device architecture for consolidating input/output and reducing latency
US7801125B2 (en) 2004-10-22 2010-09-21 Cisco Technology, Inc. Forwarding table reduction and multipath network forwarding
US7969971B2 (en) * 2004-10-22 2011-06-28 Cisco Technology, Inc. Ethernet extension for the data center
US7961621B2 (en) 2005-10-11 2011-06-14 Cisco Technology, Inc. Methods and devices for backward congestion notification
US7991926B1 (en) * 2006-02-22 2011-08-02 Marvell Israel (M.I.S.L) Ltd. Scalable memory architecture for high speed crossbars using variable cell or packet length
US8027378B1 (en) * 2006-06-29 2011-09-27 Marvell International Ltd. Circuits, architectures, apparatuses, systems, algorithms and methods and software for amplitude drop detection
US8259720B2 (en) 2007-02-02 2012-09-04 Cisco Technology, Inc. Triple-tier anycast addressing
US20080298248A1 (en) * 2007-05-28 2008-12-04 Guenter Roeck Method and Apparatus For Computer Network Bandwidth Control and Congestion Management
US20080304503A1 (en) * 2007-06-05 2008-12-11 Steven Langley Blake Traffic manager and method for performing active queue management of discard-eligible traffic
US8149710B2 (en) * 2007-07-05 2012-04-03 Cisco Technology, Inc. Flexible and hierarchical dynamic buffer allocation
KR101075724B1 (en) * 2007-07-06 2011-10-21 삼성전자주식회사 Apparatus and method for limiting packet transmission rate in a communication system
US8645960B2 (en) 2007-07-23 2014-02-04 Redknee Inc. Method and apparatus for data processing using queuing
US8121038B2 (en) 2007-08-21 2012-02-21 Cisco Technology, Inc. Backward congestion notification
US20100054127A1 (en) * 2008-08-26 2010-03-04 Broadcom Corporation Aggregate congestion detection and management
US8473428B2 (en) * 2008-12-18 2013-06-25 Cisco Technology, Inc. Generation and use of specific probability tables for arithmetic coding in data compression systems
US9112818B1 (en) 2010-02-05 2015-08-18 Marvell Isreal (M.I.S.L) Ltd. Enhanced tail dropping in a switch
US8514856B1 (en) 2010-06-24 2013-08-20 Cisco Technology, Inc. End-to-end fibre channel over ethernet
JP5498889B2 (en) * 2010-08-06 2014-05-21 アラクサラネットワークス株式会社 Packet relay apparatus and congestion control method
US8467294B2 (en) 2011-02-11 2013-06-18 Cisco Technology, Inc. Dynamic load balancing for port groups
US9042383B2 (en) * 2011-06-30 2015-05-26 Broadcom Corporation Universal network interface controller
US9473974B2 (en) 2012-05-30 2016-10-18 The University Of Hong Kong Enhancing AQM to combat wireless losses
US8817807B2 (en) * 2012-06-11 2014-08-26 Cisco Technology, Inc. System and method for distributed resource control of switches in a network environment
US8942100B2 (en) * 2012-09-18 2015-01-27 Cisco Technology, Inc. Real time and high resolution buffer occupancy monitoring and recording
US9253121B2 (en) 2012-12-31 2016-02-02 Broadcom Corporation Universal network interface controller
US9154441B2 (en) * 2013-01-25 2015-10-06 Broadcom Corporation Adaptive buffer allocation management
US9306876B1 (en) 2013-04-01 2016-04-05 Marvell Israel (M.I.S.L) Ltd. Multibank egress queuing system in a network device
US9485326B1 (en) 2013-04-01 2016-11-01 Marvell Israel (M.I.S.L) Ltd. Scalable multi-client scheduling
EP2869514A1 (en) * 2013-10-30 2015-05-06 Alcatel Lucent Method and system for queue management in a packet-switched network
US10057194B1 (en) 2014-01-07 2018-08-21 Marvell Israel (M.I.S.L) Ltd. Methods and apparatus for memory resource management in a network device
US9438523B2 (en) * 2014-02-24 2016-09-06 Freescale Semiconductor, Inc. Method and apparatus for deriving a packet select probability value
US10270713B2 (en) * 2014-12-16 2019-04-23 Oracle International Corporation Scheduling packets with multiple destinations in a virtual output queue network switch
CN106685848A (en) * 2015-11-10 2017-05-17 中兴通讯股份有限公司 Message discarding method and device
WO2018122619A2 (en) * 2016-12-07 2018-07-05 Marvell World Trade Ltd. System and method for memory access token reassignment
WO2019061302A1 (en) * 2017-09-29 2019-04-04 华为技术有限公司 Message processing method and device
US10951546B2 (en) * 2019-07-05 2021-03-16 Cisco Technology, Inc. Managing virtual output queues
US11683276B2 (en) 2021-05-20 2023-06-20 Cisco Technology, Inc. Quasi-output queue behavior of a packet switching device achieved using virtual output queue ordering independently determined for each output queue
EP4360284A1 (en) * 2021-06-26 2024-05-01 INTEL Corporation Predictive queue depth
WO2023048629A1 (en) * 2021-09-24 2023-03-30 Telefonaktiebolaget Lm Ericsson (Publ) Methods, apparatus and computer-readable media relating to congestion in wireless networks

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6333917B1 (en) * 1998-08-19 2001-12-25 Nortel Networks Limited Method and apparatus for red (random early detection) and enhancements.
US20020188648A1 (en) * 2001-05-08 2002-12-12 James Aweya Active queue management with flow proportional buffering
US6721316B1 (en) * 2000-02-14 2004-04-13 Cisco Technology, Inc. Flexible engine and data structure for packet header processing

Family Cites Families (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5402416A (en) * 1994-01-05 1995-03-28 International Business Machines Corporation Method and system for buffer occupancy reduction in packet switch network
US5526350A (en) * 1994-03-09 1996-06-11 British Telecommunications Public Limited Company Communication network with bandwidth managers for allocating bandwidth to different types of traffic
SE9402059D0 (en) * 1994-06-13 1994-06-13 Ellemtel Utvecklings Ab Methods and apparatus for telecommunications
US5742604A (en) * 1996-03-28 1998-04-21 Cisco Systems, Inc. Interswitch link mechanism for connecting high-performance network switches
US5946313A (en) * 1997-03-20 1999-08-31 Northern Telecom Limited Mechanism for multiplexing ATM AAL5 virtual circuits over ethernet
US5920566A (en) * 1997-06-30 1999-07-06 Sun Microsystems, Inc. Routing in a multi-layer distributed network element
US6021124A (en) * 1997-08-19 2000-02-01 Telefonaktiebolaget Lm Ericsson Multi-channel automatic retransmission query (ARQ) method
US5974467A (en) * 1997-08-29 1999-10-26 Extreme Networks Protocol for communicating data between packet forwarding devices via an intermediate network interconnect device
DE19747398C2 (en) * 1997-10-27 2002-10-24 Ericsson Telefon Ab L M communication system
US6560198B1 (en) * 1997-11-07 2003-05-06 Telcordia Technologies, Inc. Method and system for stabilized random early detection using packet sampling
US6587436B1 (en) * 1997-11-24 2003-07-01 Cisco Technology, Inc. Method and apparatus for allocation of available bandwidth
US6456590B1 (en) * 1998-02-13 2002-09-24 Texas Instruments Incorporated Static and dynamic flow control using virtual input queueing for shared memory ethernet switches
US6556541B1 (en) * 1999-01-11 2003-04-29 Hewlett-Packard Development Company, L.P. MAC address learning and propagation in load balancing switch protocols
US6400730B1 (en) * 1999-03-10 2002-06-04 Nishan Systems, Inc. Method and apparatus for transferring data between IP network devices and SCSI and fibre channel devices over an IP network
US6556578B1 (en) * 1999-04-14 2003-04-29 Lucent Technologies Inc. Early fair drop buffer management method
US20030195983A1 (en) * 1999-05-24 2003-10-16 Krause Michael R. Network congestion management using aggressive timers
US7016971B1 (en) * 1999-05-24 2006-03-21 Hewlett-Packard Company Congestion management in a distributed computer system multiplying current variable injection rate with a constant to set new variable injection rate at source node
TW435027B (en) * 1999-08-27 2001-05-16 Via Tech Inc Output queue method and device of network packet
US6728243B1 (en) * 1999-10-28 2004-04-27 Intel Corporation Method for specifying TCP/IP packet classification parameters
US6690645B1 (en) * 1999-12-06 2004-02-10 Nortel Networks Limited Method and apparatus for active queue management based on desired queue occupancy
US6650623B1 (en) * 1999-12-30 2003-11-18 Aperto Networks, Inc. Adaptive link layer for point to multipoint communication system
US7020715B2 (en) * 2000-08-22 2006-03-28 Adaptec, Inc. Protocol stack for linking storage area networks over an existing LAN, MAN, or WAN
US6904015B1 (en) * 2000-09-01 2005-06-07 Force10 Networks, Inc. Congestion avoidance profiles in a packet switching system
US6888824B1 (en) * 2000-10-20 2005-05-03 Cisco Technology, Inc. Random early detection (RED) algorithm using marked segments to detect congestion in a computer network
US6856596B2 (en) * 2000-12-01 2005-02-15 Marconi Communications, Inc. Approximation of the weighted random early detection buffer admittance algorithm
US20020085493A1 (en) * 2000-12-19 2002-07-04 Rick Pekkala Method and apparatus for over-advertising infiniband buffering resources
US20020085565A1 (en) * 2000-12-28 2002-07-04 Maple Optical Systems, Inc. Technique for time division multiplex forwarding of data streams
US6975589B2 (en) * 2000-12-30 2005-12-13 Redback Networks Inc. Method and apparatus for a hybrid variable rate pipe
US7136355B2 (en) * 2001-01-16 2006-11-14 Admtek Incorporated Transmission components for processing VLAN tag and priority packets supported by using single chip's buffer structure
WO2002065309A1 (en) * 2001-02-13 2002-08-22 Candera, Inc. System and method for policy based storage provisioning and management
US20020141427A1 (en) * 2001-03-29 2002-10-03 Mcalpine Gary L. Method and apparatus for a traffic optimizing multi-stage switch fabric network
US7190667B2 (en) * 2001-04-26 2007-03-13 Intel Corporation Link level packet flow control mechanism
US6654383B2 (en) * 2001-05-31 2003-11-25 International Business Machines Corporation Multi-protocol agile framer
US6459698B1 (en) * 2001-06-18 2002-10-01 Advanced Micro Devices, Inc. Supporting mapping of layer 3 priorities in an infiniband ™ network
JP3908483B2 (en) * 2001-06-28 2007-04-25 富士通株式会社 Communication device
US7158480B1 (en) * 2001-07-30 2007-01-02 Nortel Networks Limited Feedback output queuing system, apparatus, and method
US7133405B2 (en) * 2001-08-30 2006-11-07 International Business Machines Corporation IP datagram over multiple queue pairs
US7093024B2 (en) * 2001-09-27 2006-08-15 International Business Machines Corporation End node partitioning using virtualization
US20030084219A1 (en) * 2001-10-26 2003-05-01 Maxxan Systems, Inc. System, apparatus and method for address forwarding for a computer network
US7596627B2 (en) * 2001-12-18 2009-09-29 Cisco Technology, Inc. Methods and apparatus for network congestion control
JP2003198576A (en) * 2001-12-26 2003-07-11 Mitsubishi Electric Corp Optical communication system and optical communication method
US7283470B1 (en) * 2002-01-25 2007-10-16 Juniper Networks, Inc. Systems and methods for dropping data using a drop profile
US7254138B2 (en) * 2002-02-11 2007-08-07 Optimum Communications Services, Inc. Transparent, look-up-free packet forwarding method for optimizing global network throughput based on real-time route status
US7768993B2 (en) * 2002-02-13 2010-08-03 Nortel Networks Limited Transport for wireless radio access networks
US20030169690A1 (en) * 2002-03-05 2003-09-11 James A. Mott System and method for separating communication traffic
US7209478B2 (en) * 2002-05-31 2007-04-24 Palau Acquisition Corporation (Delaware) Apparatus and methods for dynamic reallocation of virtual lane buffer space in an infiniband switch
US7349336B2 (en) * 2002-06-04 2008-03-25 Lucent Technologies Inc. Random early drop with per hop behavior biasing
US7221656B1 (en) * 2002-06-18 2007-05-22 Nortel Networks Limited Technique for implementing an admission control scheme for data flows
US7260096B2 (en) * 2002-07-09 2007-08-21 International Business Machines Corporation Method and router for forwarding internet data packets
WO2004008696A1 (en) * 2002-07-16 2004-01-22 Enterasys Networks, Inc. Apparatus and method for a virtual hierarchial local area network
US7233570B2 (en) * 2002-07-19 2007-06-19 International Business Machines Corporation Long distance repeater for digital information
US7436761B2 (en) * 2002-07-30 2008-10-14 Xyratex Technology Limited Apparatus and method for connecting fibre channel devices via bypass buffers
US7218640B2 (en) * 2002-08-30 2007-05-15 Intel Corporation Multi-port high-speed serial fabric interconnect chip in a meshed configuration
US6904507B2 (en) * 2002-09-30 2005-06-07 Agilent Technologies, Inc. Buffer management architecture and method for an infiniband subnetwork
US7567581B2 (en) * 2002-10-21 2009-07-28 Broadcom Corporation Multi-service channelized SONET mapper framer
US7349416B2 (en) * 2002-11-26 2008-03-25 Cisco Technology, Inc. Apparatus and method for distributing buffer status information in a switching fabric
US7295565B2 (en) * 2002-12-24 2007-11-13 Sun Microsystems, Inc. System and method for sharing a resource among multiple queues
US7570643B2 (en) * 2003-02-12 2009-08-04 Cisco Technology, Inc. Efficient framing procedure for variable length packets
US7277391B1 (en) * 2003-04-30 2007-10-02 Nortel Networks Limited Active queue management using proportional control and rate-based information
US8004981B2 (en) * 2003-06-17 2011-08-23 Cisco Technology, Inc. Methods and devices for the coordination of flow control between a TCP/IP network and other networks
KR100567326B1 (en) * 2003-12-24 2006-04-04 한국전자통신연구원 Apparatus for switching and transferring SONET/SDH, PDH, Ethernet signals and method thereof
TWI250753B (en) * 2004-02-27 2006-03-01 Accton Technology Corp Locate the incoming port of a MAC address in ethernet switch network
US8532119B2 (en) * 2004-07-30 2013-09-10 Brocade Communications Systems, Inc. Interfabric routing header for use with a backbone fabric
US7801125B2 (en) 2004-10-22 2010-09-21 Cisco Technology, Inc. Forwarding table reduction and multipath network forwarding
US7969971B2 (en) * 2004-10-22 2011-06-28 Cisco Technology, Inc. Ethernet extension for the data center
US7564869B2 (en) * 2004-10-22 2009-07-21 Cisco Technology, Inc. Fibre channel over ethernet
US7830793B2 (en) * 2004-10-22 2010-11-09 Cisco Technology, Inc. Network device architecture for consolidating input/output and reducing latency
US8238347B2 (en) * 2004-10-22 2012-08-07 Cisco Technology, Inc. Fibre channel over ethernet
US7961621B2 (en) * 2005-10-11 2011-06-14 Cisco Technology, Inc. Methods and devices for backward congestion notification
KR100757872B1 (en) * 2006-02-06 2007-09-11 삼성전자주식회사 Apparatus and method of backward congestion notification on network

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6333917B1 (en) * 1998-08-19 2001-12-25 Nortel Networks Limited Method and apparatus for red (random early detection) and enhancements.
US6721316B1 (en) * 2000-02-14 2004-04-13 Cisco Technology, Inc. Flexible engine and data structure for packet header processing
US20020188648A1 (en) * 2001-05-08 2002-12-12 James Aweya Active queue management with flow proportional buffering

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8238347B2 (en) 2004-10-22 2012-08-07 Cisco Technology, Inc. Fibre channel over ethernet
US8842694B2 (en) 2004-10-22 2014-09-23 Cisco Technology, Inc. Fibre Channel over Ethernet
US9246834B2 (en) 2004-10-22 2016-01-26 Cisco Technology, Inc. Fibre channel over ethernet

Also Published As

Publication number Publication date
EP1805524B1 (en) 2013-05-15
US20060171318A1 (en) 2006-08-03
EP1805524A2 (en) 2007-07-11
EP1805524A4 (en) 2009-08-12
WO2006047092A2 (en) 2006-05-04
US7602720B2 (en) 2009-10-13

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