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WO1999002009A3 - Loop detection - Google Patents

Loop detection Download PDF

Info

Publication number
WO1999002009A3
WO1999002009A3 PCT/SE1998/001314 SE9801314W WO9902009A3 WO 1999002009 A3 WO1999002009 A3 WO 1999002009A3 SE 9801314 W SE9801314 W SE 9801314W WO 9902009 A3 WO9902009 A3 WO 9902009A3
Authority
WO
WIPO (PCT)
Prior art keywords
loop
loop detection
source
detection means
switch
Prior art date
Application number
PCT/SE1998/001314
Other languages
French (fr)
Other versions
WO1999002009A2 (en
Inventor
Gert Oester
Joergen Axell
Goeran Haagaard
Loa Andersson
Original Assignee
Ericsson Telefon Ab L M
Gert Oester
Joergen Axell
Goeran Haagaard
Loa Andersson
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 Ericsson Telefon Ab L M, Gert Oester, Joergen Axell, Goeran Haagaard, Loa Andersson filed Critical Ericsson Telefon Ab L M
Priority to GB9930819A priority Critical patent/GB2343085B/en
Priority to CA002294807A priority patent/CA2294807A1/en
Priority to JP50703999A priority patent/JP2002510454A/en
Priority to AU82516/98A priority patent/AU8251698A/en
Publication of WO1999002009A2 publication Critical patent/WO1999002009A2/en
Publication of WO1999002009A3 publication Critical patent/WO1999002009A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • 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
    • H04L2012/5625—Operations, administration and maintenance [OAM]
    • H04L2012/5627—Fault tolerance and recovery
    • 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
    • H04L2012/5628—Testing
    • 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
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5646—Cell characteristics, e.g. loss, delay, jitter, sequence integrity
    • H04L2012/5652—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

The invention relates to a loop-detection means produced by a source switch AS when establishing a route to a destination switch ES wherein the loop-detection means is a loop back cell (20) having the source switch AS in both source (21) and turning point (22) fields.
PCT/SE1998/001314 1997-07-04 1998-07-03 Loop detection WO1999002009A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB9930819A GB2343085B (en) 1997-07-04 1998-07-03 Loop detection
CA002294807A CA2294807A1 (en) 1997-07-04 1998-07-03 Loop detection
JP50703999A JP2002510454A (en) 1997-07-04 1998-07-03 Loop detection
AU82516/98A AU8251698A (en) 1997-07-04 1998-07-03 Loop detection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9702604A SE512055C2 (en) 1997-07-04 1997-07-04 Detection of loop
SE9702604-1 1997-07-04

Publications (2)

Publication Number Publication Date
WO1999002009A2 WO1999002009A2 (en) 1999-01-14
WO1999002009A3 true WO1999002009A3 (en) 1999-05-06

Family

ID=20407656

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/001314 WO1999002009A2 (en) 1997-07-04 1998-07-03 Loop detection

Country Status (7)

Country Link
JP (1) JP2002510454A (en)
CN (1) CN1132493C (en)
AU (1) AU8251698A (en)
CA (1) CA2294807A1 (en)
GB (1) GB2343085B (en)
SE (1) SE512055C2 (en)
WO (1) WO1999002009A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100344116C (en) * 2004-04-20 2007-10-17 北京润光泰力科技发展有限公司 A method and apparatus for Ethernet converter line side loop back detection
CN1734991B (en) * 2004-08-13 2010-08-18 中兴通讯股份有限公司 Method for detecting multi-service transmission platform device service loopback
US7706258B2 (en) * 2004-12-22 2010-04-27 Alcatel Lucent System and method for detecting loops in a customer-provider bridge domain
CN100403705C (en) * 2006-03-30 2008-07-16 华为技术有限公司 Loopback detection method of PPP encapsulation interface
TWI469568B (en) * 2010-04-22 2015-01-11 Hon Hai Prec Ind Co Ltd Switching device and loopback detecting method thereof
CN102055525B (en) * 2010-12-17 2016-03-16 北京格林伟迪科技股份有限公司 loop detection and control method
CN103220218B (en) 2013-04-28 2016-03-30 杭州华三通信技术有限公司 The method and apparatus of anti-loops in vertical stack networking

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014262A (en) * 1990-01-02 1991-05-07 At&T Bell Laboratories Apparatus and method for detecting and eliminating call looping in a node-by-node routing network
EP0555926A1 (en) * 1992-02-14 1993-08-18 Koninklijke KPN N.V. Method and means for detecting a routing loop in a telecommunication network
WO1995032571A1 (en) * 1994-05-24 1995-11-30 Nokia Telecommunications Oy Method for preventing circular routing in a telecommunication network
EP0777401A1 (en) * 1995-11-29 1997-06-04 AT&T Corp. Method for controlling a loopback test between ATM points

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014262A (en) * 1990-01-02 1991-05-07 At&T Bell Laboratories Apparatus and method for detecting and eliminating call looping in a node-by-node routing network
EP0555926A1 (en) * 1992-02-14 1993-08-18 Koninklijke KPN N.V. Method and means for detecting a routing loop in a telecommunication network
WO1995032571A1 (en) * 1994-05-24 1995-11-30 Nokia Telecommunications Oy Method for preventing circular routing in a telecommunication network
EP0777401A1 (en) * 1995-11-29 1997-06-04 AT&T Corp. Method for controlling a loopback test between ATM points

Also Published As

Publication number Publication date
SE512055C2 (en) 2000-01-17
AU8251698A (en) 1999-01-25
CN1132493C (en) 2003-12-24
GB2343085B (en) 2002-07-31
SE9702604D0 (en) 1997-07-04
GB2343085A (en) 2000-04-26
CA2294807A1 (en) 1999-01-14
CN1269955A (en) 2000-10-11
GB2343085A8 (en) 2000-05-18
WO1999002009A2 (en) 1999-01-14
JP2002510454A (en) 2002-04-02
SE9702604L (en) 1999-01-05
GB9930819D0 (en) 2000-02-16

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