CA2394418A1 - System, analyzer, and method for synchronizing a distributed system - Google Patents

System, analyzer, and method for synchronizing a distributed system Download PDF

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Publication number
CA2394418A1
CA2394418A1 CA002394418A CA2394418A CA2394418A1 CA 2394418 A1 CA2394418 A1 CA 2394418A1 CA 002394418 A CA002394418 A CA 002394418A CA 2394418 A CA2394418 A CA 2394418A CA 2394418 A1 CA2394418 A1 CA 2394418A1
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CA
Canada
Prior art keywords
analyzer
synchronization
data packets
time
multicast information
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002394418A
Other languages
French (fr)
Other versions
CA2394418C (en
Inventor
Som Sikdar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Finisar Corp
Original Assignee
Finisar Corporation
Som Sikdar
Shomiti Systems
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 Finisar Corporation, Som Sikdar, Shomiti Systems filed Critical Finisar Corporation
Publication of CA2394418A1 publication Critical patent/CA2394418A1/en
Application granted granted Critical
Publication of CA2394418C publication Critical patent/CA2394418C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H04L43/18—Protocol analysers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • 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
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
    • H04L43/106—Active monitoring, e.g. heartbeat, ping or trace-route using time related information in packets, e.g. by adding timestamps

Abstract

A method for synchronizing a distributed system is provided. The distributed system includes distributed analyzers. Each analyzer has a synchronization decoder circuit, a medium access controller, and a central processing unit. The distributed system synchronization method comprises receiving multicast information, generating local synchronization signals, receiving control data packets, and beginning processing of monitored data packets. The synchronization decoder circuit receives the multicast information, decodes the multicast information, and responsive to the multicast information, generates local synchronization signals. The decoder synchronization circuit of a first analyzer completes the decoding and the generating in a first time. The first time is adapted to enable the central processing unit of the first analyzer to start and end processing of monitored data packets at a first start time and a first end time. The first start time differs from a start time corresponding to any other analyzer by less than a maximum synchronization time. The first end time differs from an end time corresponding to any other analyzer by less than a maximum synchronization time. The maximum synchronization time comprises a parameter related to a smallest useful packet size and a network speed. The medium access controller receives control data packets. Each control data packet corresponds to a data stream. The monitored data packets are transmitted in a data stream selected for monitoring. Responsive to the local synchronization signals and the control data packets, the central processing unit for each analyzer processes monitored data packets.
CA002394418A 1998-12-30 1999-12-27 System, analyzer, and method for synchronizing a distributed system Expired - Lifetime CA2394418C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/223,103 1998-12-30
US09/223,103 US6724729B1 (en) 1998-12-30 1998-12-30 System analyzer and method for synchronizing a distributed system
PCT/US1999/030995 WO2000039962A1 (en) 1998-12-30 1999-12-27 System, analyzer, and method for synchronizing a distributed system

Publications (2)

Publication Number Publication Date
CA2394418A1 true CA2394418A1 (en) 2000-07-06
CA2394418C CA2394418C (en) 2007-02-20

Family

ID=22835054

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002394418A Expired - Lifetime CA2394418C (en) 1998-12-30 1999-12-27 System, analyzer, and method for synchronizing a distributed system

Country Status (4)

Country Link
US (2) US6724729B1 (en)
AU (1) AU2485900A (en)
CA (1) CA2394418C (en)
WO (1) WO2000039962A1 (en)

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Also Published As

Publication number Publication date
AU2485900A (en) 2000-07-31
US6724729B1 (en) 2004-04-20
CA2394418C (en) 2007-02-20
WO2000039962A1 (en) 2000-07-06
US20020176448A1 (en) 2002-11-28
US7120121B2 (en) 2006-10-10

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Effective date: 20191227