WO2012083264A3 - Synchronizing state among load balancer components - Google Patents

Synchronizing state among load balancer components Download PDF

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Publication number
WO2012083264A3
WO2012083264A3 PCT/US2011/065659 US2011065659W WO2012083264A3 WO 2012083264 A3 WO2012083264 A3 WO 2012083264A3 US 2011065659 W US2011065659 W US 2011065659W WO 2012083264 A3 WO2012083264 A3 WO 2012083264A3
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WO
WIPO (PCT)
Prior art keywords
load
load balancer
flow
load balancers
balancers
Prior art date
Application number
PCT/US2011/065659
Other languages
French (fr)
Other versions
WO2012083264A2 (en
Inventor
Parveen Patel
Volodymyr Ivanov
Marios Zikos
Vladimir Petter
Vyacheslav Kuznetsov
David Allen Dion
Original Assignee
Microsoft Corporation
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 Microsoft Corporation filed Critical Microsoft Corporation
Priority to JP2013544852A priority Critical patent/JP5889914B2/en
Priority to EP11849192.7A priority patent/EP2652924B1/en
Publication of WO2012083264A2 publication Critical patent/WO2012083264A2/en
Publication of WO2012083264A3 publication Critical patent/WO2012083264A3/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
    • H04L47/12—Avoiding congestion; Recovering from congestion
    • H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0876—Network utilisation, e.g. volume of load or congestion level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • 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
    • H04L47/11—Identifying congestion

Abstract

The present invention extends to methods, systems, and computer program products for synchronizing state among load balancer components. Embodiments of the invention include load balancers using a consistent hashing algorithm to decide how new connections should be load balanced. Use of consistent hashing algorithm permits load balancers to work in a stateless manner in steady state. Load balancers start keeping flow state information (destination address for a given flow) about incoming packets when it is needed, i.e., such as, for example, when a change in destination host configuration is detected. State information is shared across load balancers in a deterministic way, which allows knowing which load balancer is authoritative (e.g., is the owner) for a given flow. Each load balancer can reach the authoritative load balancer to learn about a flow that cannot be determined locally.
PCT/US2011/065659 2010-12-17 2011-12-16 Synchronizing state among load balancer components WO2012083264A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2013544852A JP5889914B2 (en) 2010-12-17 2011-12-16 State synchronization between load balancer components
EP11849192.7A EP2652924B1 (en) 2010-12-17 2011-12-16 Synchronizing state among load balancer components

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/972,340 US8755283B2 (en) 2010-12-17 2010-12-17 Synchronizing state among load balancer components
US12/972,340 2010-12-17

Publications (2)

Publication Number Publication Date
WO2012083264A2 WO2012083264A2 (en) 2012-06-21
WO2012083264A3 true WO2012083264A3 (en) 2012-10-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/065659 WO2012083264A2 (en) 2010-12-17 2011-12-16 Synchronizing state among load balancer components

Country Status (5)

Country Link
US (3) US8755283B2 (en)
EP (1) EP2652924B1 (en)
JP (1) JP5889914B2 (en)
CN (1) CN102857438B (en)
WO (1) WO2012083264A2 (en)

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US20150063115A1 (en) 2015-03-05
WO2012083264A2 (en) 2012-06-21
EP2652924A2 (en) 2013-10-23
CN102857438B (en) 2015-12-02
US8755283B2 (en) 2014-06-17
US9438520B2 (en) 2016-09-06
US20120155266A1 (en) 2012-06-21
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