WO2008022573A1 - Système et procédé de découpage et de connexion d'un circuit - Google Patents

Système et procédé de découpage et de connexion d'un circuit Download PDF

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Publication number
WO2008022573A1
WO2008022573A1 PCT/CN2007/070127 CN2007070127W WO2008022573A1 WO 2008022573 A1 WO2008022573 A1 WO 2008022573A1 CN 2007070127 W CN2007070127 W CN 2007070127W WO 2008022573 A1 WO2008022573 A1 WO 2008022573A1
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WO
WIPO (PCT)
Prior art keywords
circuit
prefabricated
original working
service configuration
configuration information
Prior art date
Application number
PCT/CN2007/070127
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English (en)
Chinese (zh)
Inventor
Fangming Xu
Wensheng Fu
Shengqiang Gao
Yibo He
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008022573A1 publication Critical patent/WO2008022573A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to network retrofit techniques, and more particularly to systems and methods for circuit cutover. Background of the invention
  • the service cutover may be the cutover of services on a single path or the cutover of services on multiple paths.
  • the inventor of the present application finds that: if the network element on the link directly performs the cutover, the network management staff needs to perform the manual operation, delete the entire circuit, and then re-create a circuit, which is inefficient and requires one by one. The path is switched. On the other hand, the service is interrupted for a long time during the cutover, which greatly reduces the satisfaction of the user's use of the service.
  • the current solution is to execute the script and modify the corresponding service by writing the circuit that needs to be cut and the service to be modified into a command script.
  • the method is written in a scripting language, the writing process is prone to errors, and the correctness of the business can only be verified manually.
  • the service is cut, the circuit cannot be visually viewed, and the end-to-end circuit creation function cannot be provided. Less efficient. Summary of the invention
  • Embodiments of the present invention provide a system and method for circuit cutover, which are used to improve the working efficiency of network circuit cutover and shorten the time for interrupting network services during the cutover operation.
  • the system for implementing circuit cutover provided by the embodiment of the present invention includes: a network management workstation, configured to create a prefabricated circuit, and generate service configuration information according to routing information of the prefabricated circuit;
  • the network element is configured to perform circuit cutover according to the service configuration information generated by the network management workstation.
  • the network element is cut from the original working circuit to the pre-made circuit according to the service configuration information.
  • the embodiment of the present invention performs the actual circuit cutover after the pre-fabricated circuit is created, so that the user can re-engineer the existing network on the network management workstation, re-plan the network resources, and then deliver the configuration to the network element after the completion of the planning.
  • Complete the transformation of the original network improve the efficiency of network transformation, and reduce the time and error probability of interrupting network services during the cutover operation.
  • FIG. 1 is a schematic diagram of a circuit cutover in the prior art
  • FIG. 2 is a structural diagram of a system for implementing circuit cutover in an embodiment of the present invention
  • FIG. 3 is a flow chart of a method for circuit cutover in an embodiment of the present invention.
  • FIG. 4 is a flow chart of a method for creating a prefabricated circuit in an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for creating a prefabricated circuit according to another embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for creating an emergency prefabrication circuit according to an embodiment of the present invention
  • FIG. 7 is a flowchart of a method for performing actual circuit chopping in an embodiment of the present invention. Mode for carrying out the invention
  • the actual circuit is cut off, so that the user can re-engineer the existing network on the network management workstation, and re-plan the network resources.
  • the configuration is delivered to the network element. The element performs the actual circuit cutover.
  • FIG. 2 is a structural diagram of a system for implementing circuit cutover according to an embodiment of the present invention, including a user terminal 1 and a plurality of network elements, and a user submits a pre-made circuit creation request and/or a circuit cutover request to a network management workstation through the user terminal 1, and The actual operation of the circuit cutover is performed on the network element, and the system further includes: a network management workstation 4, configured to acquire routing information of the pre-made circuit according to the pre-made circuit creation request sent by the user terminal, and save, according to the routing information of the pre-made circuit The service configuration information that needs to be updated on each network element when the actual cutover circuit is generated, and the service configuration information is sent to each network element.
  • a network management workstation 4 configured to acquire routing information of the pre-made circuit according to the pre-made circuit creation request sent by the user terminal, and save, according to the routing information of the pre-made circuit
  • the service configuration information that needs to be updated on each network element when the actual cutover circuit is generated, and
  • the routing information of the prefabricated circuit includes the route of the prefabricated circuit, the occupied time slot, the used circuit ID, the circuit direction, and the like; the network element is configured to perform actual circuit cutover according to the service configuration information, that is, according to the service configuration information. Update the business configuration (including creation and/or deletion) on the NE.
  • the network management workstation 4 may specifically include: a prefabricated circuit end-to-end module 2 and a service configuration module 3.
  • the prefabricated circuit end-to-end module 2 is configured to generate a route for the prefabricated circuit, and create a prefabricated circuit according to the route;
  • the service configuration module 3 is configured to generate the actual route according to the prefabricated circuit and the prefabricated circuit created by the prefabricated circuit end-to-end module 2
  • the service to be performed when the circuit is cut, and the generated service is delivered to the network element, that is, the service configuration information that each network element needs to update when the actual cutover circuit is generated according to the route of the prefabricated circuit, and the user is received.
  • the service configuration information is sent to each network element when the circuit is cut off.
  • the prefabricated circuit end-to-end module may specifically include: a prefabricated circuit creation module 21 and a prefabricated circuit Routing module 22.
  • the prefabricated circuit creation module 21 is configured to create a prefabricated circuit and/or an emergency prefabricated circuit, and is configured to release time slots and ports occupied by the circuit to be cut, and obtain all available resources of the circuit to be cut;
  • the circuit is the original working circuit corresponding to the prefabricated circuit;
  • the prefabricated circuit routing module 22 is used to create a route for the prefabricated circuit and the emergency prefabricated circuit to be created.
  • the pre-made circuit creation module 21 when receiving the pre-made circuit creation request sent by the user equipment, releases the time slot and port occupied by the original working circuit corresponding to the pre-made circuit, and obtains all available original working circuits of the corresponding pre-made circuit.
  • the resources are used by the prefabricated circuit routing module 22 to calculate the routing of the prefabricated circuit or emergency prefabricated circuit.
  • the prefabricated circuit routing module 22 calculates the route of the prefabricated circuit or emergency prefabricated circuit based on the available resources acquired by the prefabricated circuit creation module 21.
  • the prefabricated circuit creation module 21 saves the routing information of the prefabricated circuit or the emergency prefabricated circuit calculated by the prefabricated circuit routing module 22, that is, the creation of the prefabricated circuit or the emergency prefabricated circuit is completed.
  • FIG. 3 is a flowchart of a method for circuit cutover according to an embodiment of the present invention.
  • the precondition for performing the process is that the optical fiber of the transmission device is properly connected.
  • the circuit cutover according to the embodiment of the present invention does not involve physical transformation of the network, but only service cutover, that is, data cutover.
  • the process specifically performs the following steps:
  • Step 301 According to the user's pre-made circuit creation request, specify the source end and the sink end of the pre-made circuit to be created, calculate the route of the pre-made circuit, and create a pre-made circuit.
  • the network management workstation specifies the source and sink time slots of the prefabricated circuit to be created according to the received prefabricated circuit creation request, calculates the route of the prefabricated circuit, and creates a prefabricated circuit.
  • Step 302 Generate a service to be performed when the actual cutover circuit is generated according to the created pre-fabricated circuit and the route, and deliver the service to the network element that performs the service.
  • a circuit cutover request when a circuit cutover request is received, a real circuit is generated according to the created prefabricated circuit.
  • the service configuration information that is required to be updated by each network element when the circuit is cut, and the service configuration information is sent to each network element.
  • Step 303 Each network element updates an existing service configuration according to the received service configuration information, that is, performs actual circuit cutover.
  • the updating of existing service configurations includes creating a service and/or deleting a service.
  • step 301 The flow of creating a prefabricated circuit in step 301 will be described in detail in the following embodiments.
  • 4 is a flow chart showing the process of creating a prefabricated circuit according to an embodiment of the present invention, in which a prefabricated circuit of "source terminal is A2 and sink terminal is C2" is created for a working circuit of "source terminal is Al and sink terminal is C1". Specifically, the following steps are included:
  • Step 30101 After receiving the request sent by the user terminal, the pre-made circuit creation module determines whether the request is a request for creating a pre-made circuit, and if yes, executing step 30102; otherwise, indicating that the common circuit creation request is to create an ordinary circuit;
  • the prefabricated circuit requests a prefabricated circuit that is designated as "source terminal is Al, sink terminal is C1", and "source terminal is A2 and sink terminal is C2". .
  • A1 and A2, C1 and C2 may be the same or different, but they cannot be the same at the same time.
  • Step 30102 The prefabricated circuit creation module acquires all available idle ports and time slots on the link A2-C2, and calculates a routing information of the prefabricated circuit by the prefabricated circuit routing module, and the routing algorithm may adopt the shortest circuit priority.
  • the calculating the routing information of the prefabricated circuit includes calculating a route of the prefabricated circuit, determining a time slot occupied by each intermediate terminal, a used circuit ID, a circuit direction, and the like.
  • Step 30103 the prefabricated circuit creation module records the routing information of the prefabricated circuit calculated in step 30102, such as the route of the circuit, the occupied time slot, the used circuit ID, the circuit direction, and the circuit attribute information of the original working circuit is copied.
  • the circuit attribute information includes the circuit name and the customer attribute using the circuit.
  • the creation of the prefabricated circuit only records the routing information of the prefabricated circuit on the prefabricated circuit creation module, and does not actually create the circuit on the network element.
  • the circuit attribute information of the original working circuit is copied to directly copy the circuit attribute information of the original working circuit to the prefabricated circuit when the prefabricated circuit is created, without requiring the user to manually input the circuit attribute information.
  • the prefabricated circuit can also share ports and time slots with the original working circuit.
  • a circuit on the link ABC is to be migrated to the link ABD and requires a shared link.
  • the existing circuit ports and time slots on the network, the prefabricated circuit creation module of the network management workstation creates and shares the prefabricated circuits of the existing circuit ports and time slots, and
  • FIG. 5 shows the flow of creating the prefabricated circuit in this embodiment, where the The prefabricated circuit shares the port and time slot with the original working circuit. Specifically, the following steps are included:
  • Step 3011 After receiving the request sent by the user terminal, the pre-made circuit creation module determines whether the request is a request to create a pre-made circuit. If yes, step 3012 is performed; otherwise, it indicates that it is a normal circuit creation request, and step 3013 is performed.
  • Step 3012 Clearing the time slot occupation flag of the circuit on the link ABC and the port occupation ruler. In this step, the time slot occupation flag and the port occupation flag of the circuit on the link ABC are cleared for use in creating a prefabricated circuit, only in Performing on the network management workstation does not mean that the circuit on the link ABC is cleared.
  • Step 3013 The prefabricated circuit creation module acquires all available free ports and time slots on the circuit for use in creating a prefabricated circuit, and calculates routing information of the circuit by a prefabricated circuit routing module, where the routing information of the circuit is calculated.
  • the route including the calculation circuit specifies the time slot occupied by the source and sink of the prefabricated circuit to be created, and determines the circuit ID and circuit direction used. Among them, the routing algorithm can take the shortest circuit first.
  • Step 3014 the prefabricated circuit creating module further determines whether it is to create a prefabricated circuit, and if so, executing step 3015; otherwise, indicating that it is a normal circuit creation request, and performing steps 3016.
  • Step 3015 The prefabricated circuit creation module records circuit routing information calculated in step 3013, where the circuit routing information includes: circuit routing, occupied time slot, used circuit ID, circuit direction, and copying circuit attribute information of the original working circuit.
  • the circuit attribute information includes a circuit name and a customer attribute using the circuit, and thus, the prefabricated circuit has been created, and the process ends.
  • Step 3016 The prefabricated circuit creation module records the route, the occupied time slot, the used circuit ID, and the circuit direction calculated in step 3013, and generates a service configuration that needs to be updated on each circuit element of the circuit when the actual cutover circuit is generated. The information is sent to each network element.
  • the occupied time slot and port flag of the designated circuit are cleared, so that the newly created circuit can share resources with the circuit.
  • the prefabricated circuit creation module copies the circuit attribute information of the original working circuit, including the circuit name and the customer attributes of the circuit, etc., and the user can manually input the circuit related information when creating the prefabricated circuit.
  • step 3014 is not necessary, that is, when it is determined in step 3011 that the user's request is to create a pre-made circuit request, steps 3012, 3013, and 3015 are sequentially performed; the creation of the pre-made circuit can also be completed.
  • the prefabricated circuit shares the link AB with the original working circuit.
  • the link AB may not be shared, that is, the pre-made circuit creation request sent by the user terminal does not include the shared link AB.
  • the prefabricated circuit creation module acquires all available time slots and ports, and when calculating the route of the prefabricated circuit according to the acquired time slot and port, the shortest circuit priority may be selected, and if there is an E endpoint idle, The prefabricated circuit created by link ABC can be the circuit on the link AED.
  • a single prefabricated circuit can be created, or a prefabricated circuit can be created in batches, such as all in the circuit with "C end point as the source end and/or sink end”. Or part of the circuit to create a pre-made circuit with "D endpoint as source and / or sink”.
  • step 301 may further include: creating an emergency prefabricated circuit, and creating an emergency prefabricated circuit for providing an emergency cutover circuit.
  • step 301 may further include: creating an emergency prefabricated circuit, and creating an emergency prefabricated circuit for providing an emergency cutover circuit.
  • creating an emergency prefabricated circuit and creating an emergency prefabricated circuit for providing an emergency cutover circuit.
  • the endpoint C fails, the entire circuit on the endpoint C is to be migrated to the endpoint D, for example, the existing link ABC on the endpoint C, and the circuit on the endpoint C is migrated to the D.
  • a new prefabricated circuit is generated on the link ABD.
  • FIG. 6 The process of creating an emergency prefabricated circuit is shown in Figure 6, which specifically includes:
  • Step 3021' the prefabricated circuit creation module specifies that the circuit on the first end point is cut to the second end point
  • the first endpoint is the endpoint C
  • the second endpoint is the endpoint D.
  • the step specifies the working circuit to be migrated and the migrated destination network element, port, or board, according to the destination network element, port, or single
  • the board automatically adapts the source and sink of the prefabricated circuit.
  • Step 3022' the prefabricated circuit creation module clears the time slot occupation flag and port occupancy flag of all circuits on the link A-B-C, so that the newly created prefabricated circuit can share the resources on the link A-B.
  • Step 3023' Obtain available free ports and time slots of all circuits on the link ABC for use in creating a prefabricated circuit, and cycle the calculation of all circuit routes by the prefabricated circuit routing module to determine the occupied time slot, and the routing algorithm may be the shortest Path priority
  • Step 3024' the pre-made circuit creation module records the routing of all circuits calculated in step 3013', the occupied time slot, the circuit ID used, the circuit direction, and copies the circuit names of all the original circuits and the customer attributes using the circuit. At this point, the prefabricated circuit is created.
  • the difference between the creation of the emergency prefabricated circuit and the creation process of the ordinary prefabricated circuit is that when creating a common prefabricated circuit, it is necessary to specify the source end and the sink end of the prefabricated circuit. When creating an emergency prefabricated circuit, it is only necessary to specify the end point and desire to move out. The endpoint to move in; create a normal prefabricated circuit To create a prefabricated circuit for some or all of the working circuits on the original link, creating an emergency prefabricated circuit requires creating a prefabricated circuit for all circuits on the endpoint to be moved out, ie, the creation of the emergency prefabricated circuit is batch.
  • the service configuration information that needs to be updated on each network element is generated according to the pre-made circuit saved by the pre-made circuit creation module, and the service configuration information is sent to each network element, which is actual cutting.
  • An implementation method is provided. On the basis of the pre-fabricated circuit created above, the cutover operation is directly performed, and the previously created pre-made circuit plan can be quickly cut to the actual network element.
  • a data record can be reserved for the original working circuit, so that if the cutover result is not satisfactory after the cutover, the cutover can be performed again, that is, cut back to the original working circuit. This provides a remedy for incorrect cutovers and is simple and efficient.
  • the service update information of each network element is generated according to the created pre-made circuit, and the service update information is sent to the corresponding network element.
  • the process of performing actual circuit cutover on the network element is as shown in FIG. 7, and specifically includes:
  • Step 3031 The service configuration module determines, according to the prefabricated circuit created by the prefabricated circuit creation module, the service that needs to be created and/or deleted on the network element.
  • the link where the original working circuit is located is ABC
  • the pre-made circuit is the ABD.
  • the network element of the A endpoint does not need to update the service configuration information
  • the network element of the B endpoint needs to be deleted and C.
  • the endpoints are connected to the service configuration information and create the service configuration information related to the D endpoint connection.
  • the network element of the C endpoint needs to delete the service configuration information related to the B endpoint connection.
  • the network element of the D endpoint needs to be created with the B endpoint connection.
  • Business match Set the information. It can be seen that, in the case of a shared link, the service configuration information that needs to be updated on the network element is greatly reduced during the actual cutover, which greatly improves the efficiency of the cutover.
  • Step 3032 The service configuration module delivers the service that needs to be created and/or deleted on the network element to the network element.
  • the service configuration module completes the service cutover process by the network element, and the service sub-packages to be created are delivered to the NEs that need to perform the corresponding services.
  • Step 3033 The service configuration module modifies the type of the prefabricated circuit and modifies it to a common circuit type.
  • the service configuration module may delete the circuit routing information of the original cut-off circuit at the network layer; modify the circuit type of the pre-made circuit, and modify it to an ordinary circuit type; or modify the common circuit type of the original working circuit.
  • the prefabricated circuit type the prefabricated circuit type of the prefabricated circuit is modified to the common circuit type; when the cutover is found to be unsatisfactory, the retracting process may be performed according to the corresponding relationship of the circuit type, and the circuit is cut back to the original working circuit.
  • the type of circuit can be set and saved when the circuit is created. That is, if the circuit created is a normal circuit, the type of the circuit is set to the normal circuit type. If the created circuit is a prefabricated circuit, the type of the circuit is set to prefabricated. Circuit type.
  • the actual cutover of the circuit is to delete the entire circuit and re-create a circuit, which will result in longer service interruption and lower cutover efficiency.
  • the pre-made circuit is created on the network management workstation, and the existing network is reconstructed in advance on the network management workstation, and the network resource is re-planned. After the planning is completed, the configuration is delivered to the network element, and the original is automatically completed. There is a network transformation. This can improve the efficiency of network transformation, reduce the time and error probability of interrupting network services during the cutover operation.
  • part of the circuit port can be shared with the original working circuit, so that the network element only needs to create and delete part of the service that needs to be modified, so that the execution efficiency can also be larger. improve.
  • the circuit can be repeatedly cut and cut, Error cutover provides a way to correct it.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé permettant de couper et de connecter le circuit qui consiste: à créer le circuit de préfabrication destiné au circuit de travail d'origine sur le poste de travail du gestionnaire de réseau, à générer les informations de configuration de service sur l'unité de réseau sur la base des informations de l'itinéraire du circuit de préfabrication et à l'envoyer à l'unité de travail, et à cisailler et connecter le circuit d'origine au circuit de préfabrication sur la base des informations de configuration de service par l'unité de travail. L'invention concerne également un système de découpage et de connexion du circuit.
PCT/CN2007/070127 2006-08-15 2007-06-18 Système et procédé de découpage et de connexion d'un circuit WO2008022573A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2006101112230A CN1921412B (zh) 2006-08-15 2006-08-15 电路割接的系统及方法
CN200610111223.0 2006-08-15

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WO2008022573A1 true WO2008022573A1 (fr) 2008-02-28

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CN106803811A (zh) * 2015-11-26 2017-06-06 中兴通讯股份有限公司 一种路由信息的获取方法及装置
CN107018014A (zh) * 2017-03-14 2017-08-04 烽火通信科技股份有限公司 一种基于电路配置对的快速割接方法
CN111901136A (zh) * 2019-05-06 2020-11-06 烽火通信科技股份有限公司 基于端口替换及路由调整的网管业务批量割接方法和系统
CN113055118B (zh) * 2021-03-18 2022-05-27 烽火通信科技股份有限公司 一种承载ip协议的光混合电路的修复方法及系统

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US20060126642A1 (en) * 2003-02-03 2006-06-15 Nippon Telegraph And Telephone Optical network, optical edge router, program thereof, cut through method, and edge router

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CN100562039C (zh) * 2004-03-01 2009-11-18 华为技术有限公司 一种呼叫接续方法

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CN1377158A (zh) * 2001-03-22 2002-10-30 深圳市中兴通讯股份有限公司上海第二研究所 同步数字传输系统的业务自动配置方法
US20060126642A1 (en) * 2003-02-03 2006-06-15 Nippon Telegraph And Telephone Optical network, optical edge router, program thereof, cut through method, and edge router

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CN1921412B (zh) 2010-04-21

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