CA2416762A1 - Apparatus and method for optical communication protection - Google Patents

Apparatus and method for optical communication protection Download PDF

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Publication number
CA2416762A1
CA2416762A1 CA002416762A CA2416762A CA2416762A1 CA 2416762 A1 CA2416762 A1 CA 2416762A1 CA 002416762 A CA002416762 A CA 002416762A CA 2416762 A CA2416762 A CA 2416762A CA 2416762 A1 CA2416762 A1 CA 2416762A1
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CA
Canada
Prior art keywords
protection
path
optical communication
switching
working
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
CA002416762A
Other languages
French (fr)
Other versions
CA2416762C (en
Inventor
Evert E. De Boer
Darryl C. Ryan
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.)
Ciena Luxembourg SARL
Original Assignee
Nortel Networks Limited
Evert E. De Boer
Darryl C. Ryan
Ciena Luxembourg S.A.R.L.
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 Nortel Networks Limited, Evert E. De Boer, Darryl C. Ryan, Ciena Luxembourg S.A.R.L. filed Critical Nortel Networks Limited
Publication of CA2416762A1 publication Critical patent/CA2416762A1/en
Application granted granted Critical
Publication of CA2416762C publication Critical patent/CA2416762C/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
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off
    • H04J3/085—Intermediate station arrangements, e.g. for branching, for tapping-off for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks
    • 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
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
    • 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
    • H04L45/54—Organization of routing tables
    • 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
    • H04L45/62—Wavelength based
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0051—Network Node Interface, e.g. tandem connections, transit switching
    • H04J2203/0053—Routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0057—Operations, administration and maintenance [OAM]
    • H04J2203/006—Fault tolerance and recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/009—Topology aspects
    • H04Q2011/0092—Ring

Abstract

Protection techniques within optical communication networks are extremely important. An alternative to a line protection scheme, as most current optical communication networks use, is to utilize a path protection technique in which working and protection paths that are desired are assigned during network setup. During normal operations, only the working path is configured within the network elements' switch fabric with protection paths being left unconfigured. If a failure indication is detected in the working path by a network element, a protection entry within a routing table of the network element is looked up to determine protection switching data that is required to switch the data traffic to the pre-assigned protection path. This protection switching data is inserted within the path overhead for the data traffic so that it can be communicated to all of the network elements that require their switch fabrics reconfigured to establish the protection path of communications. This protection technique allows for similar switching speed to that of line switching protection such as BLSR designs, but with an increase in efficiency in terms of protection bandwidth.
CA002416762A 2000-07-20 2001-07-19 Apparatus and method for optical communication protection Expired - Lifetime CA2416762C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/620,248 2000-07-20
US09/620,248 US6934248B1 (en) 2000-07-20 2000-07-20 Apparatus and method for optical communication protection
PCT/CA2001/001046 WO2002009349A2 (en) 2000-07-20 2001-07-19 Apparatus and method for optical communication protection

Publications (2)

Publication Number Publication Date
CA2416762A1 true CA2416762A1 (en) 2002-01-31
CA2416762C CA2416762C (en) 2009-09-08

Family

ID=24485176

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002416762A Expired - Lifetime CA2416762C (en) 2000-07-20 2001-07-19 Apparatus and method for optical communication protection

Country Status (10)

Country Link
US (2) US6934248B1 (en)
EP (1) EP1303934B1 (en)
JP (1) JP2004504790A (en)
CN (1) CN100446445C (en)
AT (1) ATE316721T1 (en)
AU (1) AU2001276215A1 (en)
CA (1) CA2416762C (en)
DE (1) DE60116879T2 (en)
HK (1) HK1052804A1 (en)
WO (1) WO2002009349A2 (en)

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Also Published As

Publication number Publication date
US7593322B2 (en) 2009-09-22
AU2001276215A1 (en) 2002-02-05
US20050122899A1 (en) 2005-06-09
HK1052804A1 (en) 2003-09-26
CA2416762C (en) 2009-09-08
EP1303934A2 (en) 2003-04-23
DE60116879T2 (en) 2006-08-03
CN1459160A (en) 2003-11-26
CN100446445C (en) 2008-12-24
EP1303934B1 (en) 2006-01-25
JP2004504790A (en) 2004-02-12
DE60116879D1 (en) 2006-04-13
ATE316721T1 (en) 2006-02-15
WO2002009349A3 (en) 2002-09-19
WO2002009349A2 (en) 2002-01-31
US6934248B1 (en) 2005-08-23

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