WO1998024220A3 - Method and apparatus for isolating network failures by correlating paths issuing alarms with failure spans - Google Patents

Method and apparatus for isolating network failures by correlating paths issuing alarms with failure spans Download PDF

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Publication number
WO1998024220A3
WO1998024220A3 PCT/US1997/021289 US9721289W WO9824220A3 WO 1998024220 A3 WO1998024220 A3 WO 1998024220A3 US 9721289 W US9721289 W US 9721289W WO 9824220 A3 WO9824220 A3 WO 9824220A3
Authority
WO
WIPO (PCT)
Prior art keywords
paths
terminating
failure
path
network
Prior art date
Application number
PCT/US1997/021289
Other languages
French (fr)
Other versions
WO1998024220A9 (en
WO1998024220A2 (en
Inventor
William D Croslin
Original Assignee
Mci Communications Corp
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 Mci Communications Corp filed Critical Mci Communications Corp
Priority to AU74125/98A priority Critical patent/AU7412598A/en
Publication of WO1998024220A2 publication Critical patent/WO1998024220A2/en
Publication of WO1998024220A9 publication Critical patent/WO1998024220A9/en
Publication of WO1998024220A3 publication Critical patent/WO1998024220A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2254—Arrangements for supervision, monitoring or testing in networks

Abstract

A method and apparatus for analyzing a telecommunications network and isolating failures within the network first analyzes the network to identify all non-terminating paths between two digital cross-connect (DXC) nodes and terminating paths that extend from one DXC node but terminate before reaching another DXC node. All non-terminating paths are assigned 'failure spans' or maximum spans that can be restored with a single restoration route. All terminating paths that correspond to end nodes of the non-terminating path are selected, where each terminating path has a path identifier preferably indicating the inter-node connections of the path. The path identifier is compared to each failure span to create a table of correlations. A similar process is performed for all terminating paths that do not correspond to non-terminating paths in the network. When a failure occurs, all paths are identified for each corresponding alarm and compared to the previously constructed table. A failure span is identified as including a failure if one or more paths are on the failure span and are in alarm, and all paths which are off the failure span are not in alarm. Furthermore, the ports on each path in alarm can be collected to determine whether the network suffers from a full or a partial outage.
PCT/US1997/021289 1996-11-26 1997-11-20 Method and apparatus for isolating network failures by correlating paths issuing alarms with failure spans WO1998024220A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74125/98A AU7412598A (en) 1996-11-26 1997-11-20 Method and apparatus for isolating network failures by correlating paths suing alarms with failure spans

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/753,560 US5995485A (en) 1996-11-26 1996-11-26 Method and apparatus for isolating network failures by correlating paths issuing alarms with failure spans
US08/753,560 1996-11-26

Publications (3)

Publication Number Publication Date
WO1998024220A2 WO1998024220A2 (en) 1998-06-04
WO1998024220A9 WO1998024220A9 (en) 1998-10-22
WO1998024220A3 true WO1998024220A3 (en) 1998-11-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/021289 WO1998024220A2 (en) 1996-11-26 1997-11-20 Method and apparatus for isolating network failures by correlating paths issuing alarms with failure spans

Country Status (3)

Country Link
US (1) US5995485A (en)
AU (1) AU7412598A (en)
WO (1) WO1998024220A2 (en)

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JP2002300626A (en) * 2001-03-29 2002-10-11 Fujitsu Ltd Transmission line by-pass method, subscriber's line accommodation apparatus, and relay transmission line accommodation apparatus
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US7545736B2 (en) * 2003-03-31 2009-06-09 Alcatel-Lucent Usa Inc. Restoration path calculation in mesh networks
US8296407B2 (en) 2003-03-31 2012-10-23 Alcatel Lucent Calculation, representation, and maintenance of sharing information in mesh networks
US7646706B2 (en) * 2003-03-31 2010-01-12 Alcatel-Lucent Usa Inc. Restoration time in mesh networks
US7606237B2 (en) * 2003-03-31 2009-10-20 Alcatel-Lucent Usa Inc. Sharing restoration path bandwidth in mesh networks
US7689693B2 (en) 2003-03-31 2010-03-30 Alcatel-Lucent Usa Inc. Primary/restoration path calculation in mesh networks based on multiple-cost criteria
US8111612B2 (en) 2004-04-02 2012-02-07 Alcatel Lucent Link-based recovery with demand granularity in mesh networks
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JP4260723B2 (en) * 2004-11-04 2009-04-30 株式会社日立製作所 Information processing apparatus, information processing apparatus control method, and program
JP4583312B2 (en) * 2006-01-30 2010-11-17 富士通株式会社 Communication status determination method, communication status determination system, and determination device
US8165013B2 (en) * 2006-04-14 2012-04-24 Microsoft Corporation Networked computer with gateway selection
US7907535B2 (en) * 2007-11-26 2011-03-15 Alcatel-Lucent Usa Inc. Anomaly detection and diagnosis using passive monitoring
US7864687B2 (en) * 2007-12-19 2011-01-04 At&T Intellectual Property Ii, L.P. Methods and apparatus for fault identification in border gateway protocol networks
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Title
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Also Published As

Publication number Publication date
WO1998024220A2 (en) 1998-06-04
US5995485A (en) 1999-11-30
AU7412598A (en) 1998-06-22

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