WO2011003260A1 - 一种自动交换光网络中业务迁移的方法和装置 - Google Patents

一种自动交换光网络中业务迁移的方法和装置 Download PDF

Info

Publication number
WO2011003260A1
WO2011003260A1 PCT/CN2009/075712 CN2009075712W WO2011003260A1 WO 2011003260 A1 WO2011003260 A1 WO 2011003260A1 CN 2009075712 W CN2009075712 W CN 2009075712W WO 2011003260 A1 WO2011003260 A1 WO 2011003260A1
Authority
WO
WIPO (PCT)
Prior art keywords
migration
node
cross
connection
scenario
Prior art date
Application number
PCT/CN2009/075712
Other languages
English (en)
French (fr)
Inventor
吴建红
李彬
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP09847011A priority Critical patent/EP2360857A4/en
Priority to US13/140,283 priority patent/US9380359B2/en
Publication of WO2011003260A1 publication Critical patent/WO2011003260A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • 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
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0086—Network resource allocation, dimensioning or optimisation
    • 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
    • H04Q2011/0088—Signalling aspects

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for service migration in an Automatically Switched Optical Network (ASON).
  • ASON Automatically Switched Optical Network
  • ASON refers to an optical network that automatically performs optical connection switching functions with the aid of routing and signaling protocols. It differs from traditional transmission networks in that it adds a separate control plane, such as GMPLS (Generalized Multi-Protocol Label Switching, general purpose). Multi-protocol label switching and other related protocols can realize intelligent functions such as automatic resource discovery, routing, dynamic resource allocation and fault recovery in the optical network, which improves the reliability and survivability of the optical network. Since ASON is proposed in the process of the development of traditional optical networks to intelligent optical networks, it requires the ASON network to not only manage services in the intelligent optical network: Soft Permanent Connection (SPC) and Switched Connection (SC) , Switched Connection ), and can also manage services in traditional optical networks: PC (Permanent Connection). In the actual operation network, PC services and SPC services may exist at the same time. The operator will choose whether to configure intelligent attributes for the optical network according to the requirements. This raises the need for how to manage PC services in ASON.
  • GMPLS Generalized Multi-Protocol Label
  • the PC service is migrated to the SPC service.
  • the PC service directly managed by the management plane is included in the management scope of the ASON control plane to ensure that the original service is not interrupted, so that it has intelligent attributes, such as automatic recovery attributes and protection. Attributes, etc., so that it is easier to maintain the business.
  • This requires the introduction of the signaling plane of the control plane in the PC service, and the management rights of the network resources and the intersections of the services are migrated to the control plane.
  • the present invention provides a method and apparatus for service migration in an automatic switching optical network, which realizes that a permanent connection directly managed by a management plane is migrated to a management plane of a control plane without interrupting the original service.
  • the present invention provides a method for automatically exchanging services in an optical network, including: Step 1. When receiving a migration indication message, the migration node sends a cross information verification request to the transmission plane; Step 2. When the migration node receives the cross information When the success message is verified, the time slot resource migration is performed. Step 3: The migration node determines whether it is the sink node for the current service migration. If yes, directly performs the cross-connection migration. Otherwise, the downstream node sends the cross-connection with the cross-connection. After the indication signaling of the migration scenario, the cross-connection migration is performed.
  • the migration indication message is a migration command sent by the network management system, and the migration command carries routing information. When the migration node is an intermediate node or a sink node, the migration is performed.
  • the indication message is the indication signaling carried by the upstream node that carries the slot resource migration scenario.
  • the method further includes: querying whether the routing information in the migration indication message is correct, and if yes, starting to create control plane signaling.
  • the method further includes: sending, to the downstream node, indication signaling that carries a time slot resource migration scenario.
  • the migration node When the migration node is the source node, after the cross-connection migration, the migration success message is reported to the management plane; when the migration node is an intermediate node or a sink node, after the cross-connection migration is performed, the upstream node is sent and carried There is indication signaling for the cross-connection migration scenario.
  • the method further includes: The migration node changes the current migration scenario to a connection establishment scenario.
  • the present invention further provides a migration node, including: a verification request delivery module, configured to send a cross information verification request to a transmission plane when receiving the migration indication message; and a time slot resource migration module, configured to receive the intersection
  • a verification request delivery module configured to send a cross information verification request to a transmission plane when receiving the migration indication message
  • a time slot resource migration module configured to receive the intersection
  • the cross-connection migration module is used to determine whether the migration node is the sink node for the current service migration, and if so, directly perform the cross-connection migration; otherwise, the downstream node is sent. After the indication signaling carrying the cross-connection migration scenario, the cross-connection migration is performed.
  • the migration request message received by the verification request issuing module is a migration command sent by the network management, and the migration command carries routing information;
  • the migration indication message received by the verification request issuing module is the indication signaling carried by the upstream node that carries the slot resource migration scenario.
  • the school-risk request issuing module is further configured to: when the migration node is the source node, query the routing information in the migration indication message before sending the cross-information-risk request to the transmission plane.
  • the time slot resource migration module is further configured to: when the migration node is the source node or the intermediate node, send the time slot resource to the downstream node after performing the time slot resource migration
  • the indication signaling of the migration scenario is further configured to: when the migration node is the source node, report the migration success message to the management plane after performing the cross-connection migration; when the migration node is an intermediate node or a sink At the time of the node, after the cross-connection migration is performed, the indication signaling carrying the cross-connection migration scenario is sent to the upstream node.
  • the migration node provided by the present invention further includes: a connection establishment scenario refreshing module, configured to change the current migration scenario to a connection establishment scenario.
  • a connection establishment scenario refreshing module configured to change the current migration scenario to a connection establishment scenario.
  • the method provided by the present invention uses standard connection establishment signaling to perform service migration, and is well compatible with the common establishment signaling process.
  • the cross-checking, time-slot migration, and cross-migration work are performed in different signaling stages, which improves the reliability of PC migration to SPC, and further ensures the reliability of migration through strict state control and state refresh mechanism.
  • FIG. 1 is a flowchart of a method for service migration in an automatic switching optical network according to the present invention
  • FIG. 2 is a flowchart of a method for a source node to perform service migration according to an embodiment of the present invention
  • FIG. 3 is an intermediate node according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for performing service migration by a sink node according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of signaling between nodes when an automatic switched optical network completes PC migration to SPC according to an embodiment of the present invention
  • FIG. 6 is a flow chart of a state transition of a PC in an embodiment of the present invention
  • FIG. 7 is a flowchart of a state control change in a migration process according to an embodiment of the present invention
  • FIG. 8 is a structure of a migration node according to the present invention; Figure.
  • the invention provides a method and a device for automatically migrating a service in an optical network, and realizes that the permanent connection directly managed by the management plane is migrated to the management plane of the control plane without interrupting the original service, thereby solving the existing The permanent connection in the ASON network existing in the technology cannot be soft permanent Connection migration issues.
  • the present invention provides a method for automatically exchanging services in an optical network. As shown in FIG.
  • Step S101 When the migration node receives the migration indication message, it sends a cross information to the transmission plane. Request.
  • the migration indication message is a migration command sent by the network management, and the migration command carries routing information.
  • the migration node is an intermediate node or a sink node, the migration indication message is sent by the upstream node.
  • the indication signaling carrying the slot resource migration scenario is carried.
  • the migration node performs the following operations: Before sending the cross information verification request to the transmission plane, query whether the routing information in the migration indication message is correct, and if so, start the creation of the control plane signaling. .
  • Step S102 Perform time slot resource migration when the migration node receives the cross information verification success message. Specifically, when the migration node is a source node or an intermediate node, the migration node performs the following operations: After the time slot resource migration is performed, the indication signaling carrying the time slot resource migration scenario is sent to the downstream node. Step S103: The migration node determines whether it is a sink node for the current service migration. If yes, directly performs the cross-connection migration. Otherwise, after receiving the indication signaling of the cross-connection migration scenario sent by the downstream node, the cross-connection is performed. migrate.
  • the migration node when the migration node is the source node, after the cross-connection migration, the migration success message is reported to the management plane; when the migration node is the intermediate node or the sink node, after the cross-connection migration is performed, the upstream node is sent and carried.
  • There is indication signaling for the cross-connection migration scenario Specifically, after the step, the following operations are also performed:
  • the migration node changes the current migration scenario to a connection establishment scenario.
  • the method provided by the present invention uses standard connection establishment signaling to perform service migration, and is well compatible with the common establishment signaling process.
  • the cross-checking, time-slot migration, and cross-migration work are performed in different signaling stages, which improves the reliability of PC migration to SPC, and further ensures the reliability of migration through strict state control and state refresh mechanism.
  • the specific implementation process of the method for service migration in the automatic switched optical network provided by the present invention is described in detail below through a preferred embodiment. Specifically, the embodiment of the present invention completes the migration of the PC to the SPC in the automatic switched optical network by using a standard signaling routine, where the standard signaling may be either RSVP signaling or CR-LDP signaling. The detailed implementation process of the present invention will be further described below based on the RSVP-TE protocol.
  • the migration process of each migration node is basically the same during the migration process from the PC to the SPC, but there are certain differences.
  • the migration process of each migration node will be separately described below, so as to explain the detailed implementation of the embodiment of the present invention. process.
  • the service source node migration process as shown in FIG. 2, specifically includes the following steps: Step S201: The source node receives the PC that is sent by the network management system to be an SPC command, where the command carries routing information, where the routing information further includes Time slot information.
  • Step S202 Query whether the routing information is correct, that is, whether the routing is queried by the control plane. If the routing information is correct, the establishment of the control plane signaling is started.
  • Step S203 Send a cross information verification request to the transmission plane. If the cross information verification is successful, the time slot resource migration is started. If the cross information verification fails, the migration process is stopped.
  • Step S206 After completing the cross-connection migration, report the migration success message to the management plane.
  • Step S207 After the migration success message is sent to the management plane, the current migration scenario is changed to the signaling scenario of the connection establishment, and the refreshed Path signaling is sent to the downstream node, where the Path signaling carries the normal connection establishment. Signaling scenario.
  • the service intermediate node migration process as shown in FIG. 3, specifically includes the following steps: Step S301: The intermediate node receives the Path signaling sent by the upstream node, and determines whether to perform connection establishment or migration operation according to the signaling scenario carried in the signaling.
  • the signaling scenario carried by the PC is the migration scenario of the PC to the SPC, and the service migration of the node is started.
  • Step S302 Send a cross information verification request to the transmission plane, if the cross information verification is successful, start the time slot resource migration; if the cross information verification fails, stop the migration process, and send the Patherr signaling to the upstream node to notify the migration. failure.
  • Step S303 After the time slot resource is successfully migrated, the Path signaling is sent to notify the downstream node to perform time slot resource migration, and the downstream node is notified to perform service migration.
  • the Path signaling carries a signaling scenario in which the PC performs time slot resource migration to the SPC.
  • Step S304 Real-time monitoring whether the Resv signaling sent by the downstream node is received, and determining whether to perform the connection establishment or the cross-connection migration operation according to the signaling scenario carried in the signaling. If the carried signaling scenario is a cross-connection migration scenario, request to transmit The plane performs the cross-connection migration of this node.
  • Step S305 After the cross-connection is successfully migrated, the Resv signaling is sent to the upstream node, and the cross-connection migration of the upstream node is continued.
  • Step S306 Real-time monitoring whether the received path signaling sent by the upstream node is received, and if yes, changing the current migration scenario to a signaling scenario of the normal connection establishment, and sending the updated Path signaling to the downstream node, where the Path signaling carries There is a signaling scenario for normal connection establishment.
  • the service sink node migration process includes the following steps: Step S401: The sink node receives the Path signaling sent by the upstream node, and determines whether to perform the connection establishment or the migration operation according to the signaling scenario carried in the signaling.
  • the signaling scenario is the migration scenario of the PC to the SPC, and the service migration of the node is started.
  • Step S402 sending a cross information verification request to the transmission plane, if the cross information verification is successful, starting the time slot resource migration; if the cross information verification fails, stopping the migration process, and sending the Patherr signaling to the upstream node, advertising the migration failure.
  • Step S403 After the time slot resource is successfully migrated, determine whether it is a sink node for the current service migration. If yes, stop sending Path signaling to the downstream node, and request the transport plane to start the cross-connection migration of the local node.
  • Step S404 After the cross-migration is successful, the Resv signaling is sent to the upstream node, and the cross-connection migration of the upstream node is continued.
  • Step S405 Real-time monitoring whether the received path signaling sent by the upstream node is received, and if yes, changing the current migration scenario to a signaling scenario of normal connection establishment.
  • the flow chart of signaling between nodes in the automatic switched optical network in the embodiment of the present invention is as shown in FIG. 5 .
  • the basic principle is that the source node performs its own time slot resource migration after receiving the migration command, and then sends the Path signaling to the downstream node.
  • the downstream node performs the time slot resource migration when receiving the Path signaling carrying the migration scenario.
  • the sink node Until the sink node in the downstream node completes the slot resource migration; the sink node returns the Resv signaling to the upstream node after completing the slot resource migration, notifying the upstream node to perform the cross-connection migration, until the source node completes the cross-connection migration and sends the packet to the downstream node.
  • the path signaling is refreshed, so that the downstream node changes the current signaling scenario to the connection establishment scenario, and the migration operation ends.
  • the embodiment of the present invention provides a clear description of the implementation process of the service switching of the automatic switched optical network provided by the embodiment of the present invention, and describes the state transition process during the migration process. Specifically, as shown in FIG. 6, where The following state is designed to ensure the reliability of migration when migrating to SPC: SI CONN PC SPC BEGIN (starting PC to SPC migration;), C1 - PC orientation
  • Step S701 The current migration node determines that the signaling scenario carried in the received signaling is that the PC migrates the scenario to the SPC, and the connection enters the state S1.
  • Step S702 If the school-risk cross information succeeds and the time slot resource is migrated, the connection enters the state S2 from the state S1; if the cross information is verified or the time slot is missed, the connection enters the state S4 from the state S1.
  • Step S703 After receiving the downstream migration success signaling, start the cross-connection migration. If the cross-connection migration succeeds, the connection enters the state S3 from the state S2.
  • the embodiment of the present invention describes a method for service migration in an automatically switched optical network from different nodes, and uses a standard connection to establish signaling to perform service migration, and is compatible with the common establishment of a signaling process.
  • the cross-checking, time-slot migration, and cross-migration work are performed in different signaling stages, which improves the reliability of PC migration to SPC, and further ensures the reliability of migration through strict state control and state refresh mechanism.
  • the present invention further provides a migration node, as shown in FIG.
  • a school-risk request delivery module 810 configured to send a cross-information verification request to a transmission plane when receiving the migration indication message
  • the migration module 820 is configured to perform time slot resource migration when receiving the cross information verification success message
  • the cross connection migration module 830 is configured to determine whether the migration node is a sink node for the current service migration, and if so, directly cross The connection is migrated. Otherwise, after receiving the indication signaling of the cross-connection migration scenario sent by the downstream node, the cross-connection migration is performed.
  • the migration request message received by the verification request delivery module 810 is a migration command sent by the network management, and the migration command carries routing information;
  • the migration node is an intermediate node or a sink node,
  • the migration indication message received by the verification request sending module 810 is the indication signaling that is sent by the upstream node and carries the slot resource migration scenario.
  • the school-risk request issuing module 810 is further configured to: when the migration node is the source node, query the routing information in the migration indication message before sending the cross-information verification request to the transmission plane, and if so, start Control plane signaling creation;
  • the time slot resource migration module 820 is further configured to: when the migration node is the source node or the intermediate node, send the indication signaling carrying the time slot resource migration scenario to the downstream node after performing the time slot resource migration; the cross connection migration module 830 And when the migration node is the source node, after the cross-connection migration, the migration success message is reported to the management plane; when the migration node is the intermediate node or the sink node, after the cross-connection migration, the upstream node is The indication signaling carrying the cross-connection migration scenario is sent.
  • the migration node provided by the present invention further includes: a connection establishment scenario refreshing module 840, configured to change the current migration scenario to a connection establishment scenario.
  • the migration node provided by the present invention uses standard connection establishment signaling to perform service migration, and is well compatible with the common establishment signaling process.
  • the cross-checking, time-slot migration, and cross-migration work are performed in different signaling stages, which improves the reliability of PC migration to SPC, and further ensures the reliability of migration through strict state control and state refresh mechanism.

Landscapes

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

Description

一种自动交换光网络中业务迁移的方法和装置 技术领域 本发明涉及通信技术领域， 尤其涉及一种自动交换光网络 ( ASON, Automatically Switched Optical Network ) 中业务迁移的方法和装置。 背景技术 随着网络技术的发展， 网络通信容量的大幅增长， 人们对作为传送网的 性能提出了更高的要求。 通过在光域增加自动控制的协议手段赋予光网络的 智能属性， 希望网络的构架更加灵活， 网络的管理灵活统一， 带宽利用率更 高， 生存性和扩展性更强且能够提供动态的连接和智能的调度方式。 于是， ASON应运而生。
ASON 是指在路由和信令协议的辅助下自动完成光连接交换功能的光 网络， 它和传统传输网络的区别是增加了一个独立的控制平面， 通过诸如 GMPLS ( Generalized Multi-Protocol Label Switching, 通用多协议标记交换 ) 等相关协议， 可以在光网络中实现资源的自动发现、 路由选择、 动态资源分 配和故障恢复等智能化功能， 很好的提高了光网络的可靠性和生存性。 由于 ASON是在传统光网络向智能光网络发展的过程中提出来的， 这 就要求 ASON网络不仅仅能够管理智能光网络中的业务： 软永久连接 ( SPC, Soft Permanent Connection )和交换连接（ SC, Switched Connection ), 同时也 能够管理传统光网络中的业务： 永久连接 ( PC , Permanent Connection )。 在 实际的运营网络中， 可能会同时存在 PC业务和 SPC业务， 运营商会根据需 求选择是否为光网络配置智能属性， 这就提出了如何在 ASON中管理 PC业 务的需求。
PC业务迁移为 SPC业务， 就是在保证原有业务不中断的前提下， 将管 理平面直接管理的 PC业务纳入到 ASON控制平面的管理范围之内， 使其具 备智能属性， 例如自动恢复属性和保护属性等， 从而能够更加方便的维护业 务。 这就需要在 PC业务中引入控制平面的信令状态， 将业务占用的网络资 源和交叉这两者的管理权限迁移至控制平面。 发明内容 本发明提供一种自动交换光网络中业务迁移的方法和装置，实现了在不 中断原有业务的前提下， 将管理平面直接管理的永久连接迁移到控制平面的 管理范围内。 本发明提供了一种自动交换光网络中业务迁移的方法， 包括： 步骤 1、 迁移节点接收到迁移指示消息时， 向传送平面发送交叉信息校 验请求； 步骤 2、 当迁移节点接收到交叉信息校验成功消息时， 进行时隙资源迁 移； 步骤 3、 迁移节点判断自身是否为本次业务迁移的宿节点， 若是， 直接 进行交叉连接迁移， 否则， 在接收到下游节点发送的携带有交叉连接迁移场 景的指示信令后， 进行交叉连接迁移。 其中， 当所述迁移节点为源节点时， 所述迁移指示消息为网管发送的迁 移命令， 所述迁移命令中携带有路由信息； 当所述迁移节点为中间节点或宿节点时，所述迁移指示消息为上游节点 发送的携带有时隙资源迁移场景的指示信令。 进一步地， 当所述迁移节点为源节点时， 在向传送平面发送交叉信息校 验请求前还包括： 查询所述迁移指示消息中的路由信息是否正确， 若是， 开 始控制平面信令的创建。 当所述迁移节点为源节点或中间节点时， 在进行时隙资源迁移后还包 括： 向下游节点发送携带有时隙资源迁移场景的指示信令。 当所述迁移节点为源节点时， 在进行交叉连接迁移后， 向管理平面上报 迁移成功消息； 当所述迁移节点为中间节点或宿节点时， 在进行交叉连接迁移后， 向上 游节点发送携带有交叉连接迁移场景的指示信令。 具体地， 在所述步骤 3之后还包括: 所述迁移节点将当前迁移场景更改为连接建立场景。 本发明还提供一种迁移节点， 包括： 校验请求下发模块， 用于在接收到迁移指示消息时， 向传送平面发送交 叉信息校验请求； 时隙资源迁移模块， 用于在接收到交叉信息校验成功消息时， 进行时隙 资源迁移； 交叉连接迁移模块，用于判断所在迁移节点是否为本次业务迁移的宿节 点， 若是， 直接进行交叉连接迁移， 否则， 在接收到下游节点发送的携带有 交叉连接迁移场景的指示信令后， 进行交叉连接迁移。 其中， 当所述迁移节点为源节点时， 所述校验请求下发模块接收到的迁 移指示消息为网管发送的迁移命令， 所述迁移命令中携带有路由信息； 当所述迁移节点为中间节点或宿节点时，所述校验请求下发模块接收到 的迁移指示消息为上游节点发送的携带有时隙资源迁移场景的指示信令。 具体地， 所述校 -险请求下发模块， 还用于当所在迁移节点为源节点时， 在向传送平面发送交叉信息校 -险请求前， 查询所述迁移指示消息中的路由信 息是否正确， 若是， 开始控制平面信令的创建； 所述时隙资源迁移模块， 还用于当所在迁移节点为源节点或中间节点 时， 在进行时隙资源迁移后， 向下游节点发送携带有时隙资源迁移场景的指 示信令； 所述交叉连接迁移模块， 还用于当所在迁移节点为源节点时， 在进行交 叉连接迁移后， 向管理平面上报迁移成功消息； 当所在迁移节点为中间节点 或宿节点时， 在进行交叉连接迁移后， 向上游节点发送携带有交叉连接迁移 场景的指示信令。 进一步地， 本发明提供的迁移节点还包括： 连接建立场景刷新模块， 用于将当前迁移场景更改为连接建立场景。 与现有技术相比， 本发明具有以下优点： 本发明提供的方法， 使用标准连接建立信令进行业务的迁移， 很好的兼 容普通建立信令流程。 在不同的信令阶段分别完成交叉校验、 时隙迁移和交 叉迁移工作， 提高了 PC迁移为 SPC的可靠性， 并且通过严格的状态控制以 及状态刷新机制进一步确保迁移的可靠性。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实 施例或现有技术描述中所需要使用的附图进行简单地介绍， 显而易见地， 下 面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还可以才艮据这些附图获得其他的附图。 图 1为本发明提供的一种自动交换光网络中业务迁移的方法的流程图； 图 2为本发明实施例中源节点进行业务迁移的方法流程图； 图 3为本发明实施例中中间节点进行业务迁移的方法流程图； 图 4为本发明实施例中宿节点进行业务迁移的方法流程图； 图 5为本发明实施例中自动交换光网络完成 PC迁移为 SPC时各节点间 信令传递流程图； 图 6为本发明实施例中 PC迁移为 SPC状态转换图； 图 7为本发明实施例中迁移过程中的状态控制变化流程图； 图 8为本发明提供的一种迁移节点的结构图。 具体实施方式 下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而 不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。 本发明提供一种自动交换光网络中业务迁移的方法和装置，实现了在不 中断原有业务的前提下， 将管理平面直接管理的永久连接迁移到控制平面的 管理范围内， 解决了现有技术中存在的 ASON网络中永久连接不能向软永久 连接迁移的问题。 具体地， 本发明提供一种自动交换光网络中业务迁移的方法， 如图 1 所示， 包括以下步 4聚： 步骤 S 101、 迁移节点接收到迁移指示消息时， 向传送平面发送交叉信 息校验请求。 其中， 当迁移节点为源节点时， 上述迁移指示消息为网管发送的迁移命 令， 该迁移命令中携带有路由信息； 当迁移节点为中间节点或宿节点时，上述迁移指示消息为上游节点发送 的携带有时隙资源迁移场景的指示信令。 进一步地， 当迁移节点为源节点时， 迁移节点还进行以下操作： 在向传 送平面发送交叉信息校验请求前，查询迁移指示消息中的路由信息是否正确， 若是， 开始控制平面信令的创建。 步骤 S 102、 当迁移节点接收到交叉信息校验成功消息时， 进行时隙资 源迁移。 具体地，当迁移节点为源节点或中间节点时，迁移节点还进行以下操作： 在进行时隙资源迁移后， 向下游节点发送携带有时隙资源迁移场景的指示信 令。 步骤 S 103、 迁移节点判断自身是否为本次业务迁移的宿节点， 若是， 直接进行交叉连接迁移， 否则， 在接收到下游节点发送的携带有交叉连接迁 移场景的指示信令后， 进行交叉连接迁移。 该步骤中， 当迁移节点为源节点时， 在进行交叉连接迁移后， 向管理平 面上报迁移成功消息； 当迁移节点为中间节点或宿节点时， 在进行交叉连接迁移后， 向上游节 点发送携带有交叉连接迁移场景的指示信令。 具体地， 在该步骤之后还进行以下操作： 迁移节点将当前迁移场景更改 为连接建立场景。 本发明提供的方法， 使用标准连接建立信令进行业务的迁移， 很好的兼 容普通建立信令流程。 在不同的信令阶段分别完成交叉校验、 时隙迁移和交 叉迁移工作， 提高了 PC迁移为 SPC的可靠性， 并且通过严格的状态控制以 及状态刷新机制进一步确保迁移的可靠性。 下面通过一较佳实施例来详细阐述本发明提供的一种自动交换光网络 中业务迁移的方法的具体实现过程。 具体地， 本发明实施例釆用标准信令例程完成了自动交换光网络中 PC 至 SPC的迁移，其中标准信令既可以是 RSVP信令，也可以是 CR-LDP信令。 下面将以 RSVP-TE协议为依托， 进一步对本发明的详细实现过程进行阐述。 本实施例实现从 PC至 SPC的迁移过程中每个迁移节点的迁移过程基本 相同， 但也有一定的区别， 下面将分别描述每个迁移节点的迁移过程， 从而 来说明本发明实施例的详细实现过程。 具体地， 业务源节点迁移过程， 如图 2所示， 具体包括以下步骤： 步骤 S201、 源节点接收网管下发的 PC迁移为 SPC命令， 该命令中携 带有路由信息， 所述路由信息进一步包括时隙信息。 步骤 S202、 查询路由信息是否正确， 即在控制平面查询路由是否可达， 如果路由信息正确， 开始控制平面信令的创建。 步骤 S203、 向传送平面发送交叉信息校验请求， 如果交叉信息校验成 功， 开始进行时隙资源迁移； 如果交叉信息校验失败， 则停止迁移过程。 步骤 S204、 时隙资源迁移成功后， 发送 Path (路径） 信令通知下游节 点进行时隙资源迁移， 其中， Path信令携带有 PC向 SPC进行时隙资源迁移 的信令场景。 步骤 S205、 实时监测是否接收到下游节点发送的 Resv信令， 并根据该 信令中携带的信令场景判断进行连接建立还是交叉连接迁移操作， 如果携带 的信令场景为交叉连接迁移场景，请求传送平面进行本节点的交叉连接迁移。 其中， 接收到 Resv信令表示下游节点已经全部迁移成功。 步骤 S206、 在完成交叉连接迁移后， 向管理平面上报迁移成功消息。 步骤 S207、 在向管理平面上 ·ί艮迁移成功消息后， 将当前迁移场景更改 为连接建立的信令场景， 并向下游节点发送刷新的 Path信令， 该 Path信令 携带有普通连接建立的信令场景。 业务中间节点迁移过程， 如图 3所示， 具体包括以下步骤： 步骤 S301、 中间节点接收到上游节点发送的 Path信令， 根据信令中携 带的信令场景判断进行连接建立还是迁移操作， 如果携带的信令场景为 PC 向 SPC的迁移场景， 开始进行本节点的业务迁移。 步骤 S302、 向传送平面发送交叉信息校验请求， 如果交叉信息校验成 功， 开始进行时隙资源迁移； 如果交叉信息校验失败， 则停止迁移过程， 并 向上游节点发送 Patherr信令， 通告迁移失败。 步骤 S303、 时隙资源迁移成功后， 发送 Path信令通知下游节点进行时 隙资源迁移，通知下游节点进行业务迁移，其中， Path信令携带有 PC向 SPC 进行时隙资源迁移的信令场景。 步骤 S304、 实时监测是否接收到下游节点发送的 Resv信令， 并根据信 令中携带的信令场景判断进行连接建立还是交叉连接迁移操作， 如果携带的 信令场景为交叉连接迁移场景， 请求传送平面进行本节点的交叉连接迁移。 步骤 S305、 交叉连接迁移成功后向上游节点发送 Resv信令， 继续上游 节点的交叉连接迁移。 步骤 S306、 实时监测是否接收到上游节点发送的刷新的 path信令， 若 是， 将当前迁移场景更改为普通连接建立的信令场景， 并向下游节点发送刷 新的 Path信令， 该 Path信令携带有普通连接建立的信令场景。 业务宿节点迁移过程， 如图 4所示， 包括以下步骤： 步骤 S401、 宿节点接收到上游节点发送的 Path信令， 根据信令中携带 的信令场景判断进行连接建立还是迁移操作， 如果携带的信令场景为 PC向 SPC的迁移场景， 开始进行本节点的业务迁移。 步骤 S402、 向传送平面发送交叉信息校验请求， 如果交叉信息校验成 功， 开始进行时隙资源迁移； 如果交叉信息校验失败， 则停止迁移过程， 并 向上游节点发送 Patherr信令， 通告迁移失败。 步骤 S403、 时隙资源迁移成功后， 判断自身是否为本次业务迁移的宿 节点， 若是， 停止向下游节点发送 Path信令， 请求传送平面开始进行本节点 的交叉连接迁移。 步骤 S404、 交叉迁移成功后向上游节点发送 Resv信令， 继续上游节点 的交叉连接迁移。 步骤 S405、 实时监测是否接收到上游节点发送的刷新的 path信令， 若 是， 将当前迁移场景更改为普通连接建立的信令场景。 基于上述各节点的迁移操作， 本发明实施例中自动交换光网络完成 PC 迁移为 SPC时各节点间信令传递流程图如图 5所示。其基本原理为源节点在 接收到迁移命令后先进行自身的时隙资源迁移， 然后向下游节点发送 Path信 令， 下游节点在接收到携带有迁移场景的 Path信令时， 进行时隙资源迁移， 直到下游节点中的宿节点完成时隙资源迁移； 宿节点完成时隙资源迁移后向 上游节点返回 Resv 信令， 通知上游节点进行交叉连接迁移， 直到源节点完 成交叉连接迁移后向下游节点发送刷新的 Path信令， 以使下游节点将当前信 令场景更改为连接建立场景， 迁移操作结束。 本发明实施例为了更清楚的表述本发明实施例提供的自动交换光网络 进行业务迁移的实现过程，对迁移过程中的状态转换过程进行阐述，具体地， 如图 6所示， 其中， 在 PC向 SPC迁移时设计了如下状态来保证迁移的可靠 性： S I CONN PC SPC BEGIN (开始 PC到 SPC的迁移；)， C1— PC向
SPC时隙迁移成功；
52 CONN PC SPC LABEL ( PC向 SPC时隙迁移完毕）， C2 - PC 向 SPC时隙迁移失败；
53 CONN PC SPC SUCCESS ( PC向 SPC迁移完成 ), C3 - PC向 SPC交叉迁移成功； C5-交叉校-险失败；
54 CONN PC SPC FAILURE ( PC向 SPC迁移失败；)， C4 - PC向
SPC交叉迁移失败。 下面将结合图 6详细描述迁移过程中的状态控制机制， 如图 7所示， 具 体包括以下步 4聚： 步骤 S701、当前迁移节点判断接收到的信令中携带的信令场景为 PC向 SPC迁移场景， 连接进入状态 S l。 步骤 S702、 如果校-险交叉信息成功并迁移时隙资源， 连接由状态 S 1进 入状态 S2; 如果校验交叉信息或迁移时隙时出错， 连接由状态 S 1进入状态 S4。 步骤 S703、 接收到下游迁移成功信令后， 开始交叉连接的迁移， 如果 交叉连接迁移成功， 连接由状态 S2进入状态 S3; 接收到下游迁移失败的信 令后， 连接由状态 S2进入状态 S4, 并将时隙资源重新迁移回管理平面。 本发明实施例从不同的节点对自动交换光网络中业务迁移的方法进行 阐述， 通过使用标准连接建立信令进行业务的迁移， 艮好的兼容普通建立信 令流程。 在不同的信令阶段分别完成交叉校验、 时隙迁移和交叉迁移工作， 提高了 PC迁移为 SPC的可靠性， 并且通过严格的状态控制以及状态刷新机 制进一步确保迁移的可靠性。 本发明还提供一种迁移节点， 如图 8所示， 具体包括： 校-险请求下发模块 810, 用于在接收到迁移指示消息时， 向传送平面发 送交叉信息校验请求； 时隙资源迁移模块 820, 用于在接收到交叉信息校验成功消息时， 进行 时隙资源迁移； 交叉连接迁移模块 830, 用于判断所在迁移节点是否为本次业务迁移的 宿节点， 若是， 直接进行交叉连接迁移， 否则， 在接收到下游节点发送的携 带有交叉连接迁移场景的指示信令后， 进行交叉连接迁移。 其中， 当迁移节点为源节点时， 上述校验请求下发模块 810接收到的迁 移指示消息为网管发送的迁移命令， 该迁移命令中携带有路由信息； 当迁移 节点为中间节点或宿节点时， 上述校验请求下发模块 810接收到的迁移指示 消息为上游节点发送的携带有时隙资源迁移场景的指示信令。 进一步地，校-险请求下发模块 810,还用于当所在迁移节点为源节点时， 在向传送平面发送交叉信息校验请求前， 查询迁移指示消息中的路由信息是 否正确， 若是， 开始控制平面信令的创建； 时隙资源迁移模块 820 , 还用于当所在迁移节点为源节点或中间节点 时， 在进行时隙资源迁移后， 向下游节点发送携带有时隙资源迁移场景的指 示信令； 交叉连接迁移模块 830, 还用于当所在迁移节点为源节点时， 在进行交 叉连接迁移后， 向管理平面上报迁移成功消息； 当所在迁移节点为中间节点 或宿节点时， 在进行交叉连接迁移后， 向上游节点发送携带有交叉连接迁移 场景的指示信令。 具体地， 本发明提供的迁移节点还包括： 连接建立场景刷新模块 840 , 用于将当前迁移场景更改为连接建立场 景。 本发明提供的迁移节点， 使用标准连接建立信令进行业务的迁移， 很好 的兼容普通建立信令流程。 在不同的信令阶段分别完成交叉校验、 时隙迁移 和交叉迁移工作， 提高了 PC迁移为 SPC的可靠性， 并且通过严格的状态控 制以及状态刷新机制进一步确保迁移的可靠性。 显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求 书
1. 一种自动交换光网络中业务迁移的方法， 其特征在于， 包括： 迁移节点接收到迁移指示消息时， 向传送平面发送交叉信息校验 请求；
当所述迁移节点接收到交叉信息校验成功消息时， 进行时隙资源 迁移；
所述迁移节点判断自身是否为本次业务迁移的宿节点， 若是， 直 接进行交叉连接迁移， 否则， 在接收到下游节点发送的携带有交叉连 接迁移场景的指示信令后， 进行交叉连接迁移。
2. 如权利要求 1所述的方法， 其特征在于， 当所述迁移节点为源节点时， 所述迁移指示消息为网管发送的迁 移命令， 所述迁移命令中携带有路由信息；
当所述迁移节点为中间节点或宿节点时， 所述迁移指示消息为上 游节点发送的携带有时隙资源迁移场景的指示信令。
3. 如权利要求 1或 2所述的方法， 其特征在于， 当所述迁移节点为源节点 时， 在向传送平面发送交叉信息校 -险请求前还包括： 查询所述迁移指示消息中的路由信息是否正确， 若是， 开始控制 平面信令的创建。
4. 如权利要求 1或 2所述的方法， 其特征在于， 当所述迁移节点为源节点 或中间节点时， 在进行时隙资源迁移后还包括： 向下游节点发送携带有 时隙资源迁移场景的指示信令。
5. 如权利要求 1或 2所述的方法， 其特征在于， 当所述迁移节点为源节点时， 在进行交叉连接迁移后， 向管理平 面上报迁移成功消息；
当所述迁移节点为中间节点或宿节点时， 在进行交叉连接迁移 后， 向上游节点发送携带有交叉连接迁移场景的指示信令。
6. 如权利要求 5所述的方法， 其特征在于， 在进行交叉连接迁移之后还包 括： 所述迁移节点将当前迁移场景更改为连接建立场景。
7. —种迁移节点， 其特征在于， 包括： 校验请求下发模块， 用于在接收到迁移指示消息时， 向传送平面 发送交叉信息校验请求；
时隙资源迁移模块， 用于在接收到交叉信息校验成功消息时， 进 行时隙资源迁移；
交叉连接迁移模块， 用于判断所在迁移节点是否为本次业务迁移 的宿节点， 若是， 直接进行交叉连接迁移， 否则， 在接收到下游节点 发送的携带有交叉连接迁移场景的指示信令后， 进行交叉连接迁移。
8. 如权利要求 7所述的迁移节点， 其特征在于， 当所述迁移节点为源节点时， 所述校验请求下发模块接收到的迁 移指示消息为网管发送的迁移命令，所述迁移命令中携带有路由信息； 当所述迁移节点为中间节点或宿节点时， 所述校验请求下发模块 接收到的迁移指示消息为上游节点发送的携带有时隙资源迁移场景的 指示信令。
9. 如权利要求 7或 8所述的迁移节点， 其特征在于， 所述校验请求下发模块， 还用于当所在迁移节点为源节点时， 在 向传送平面发送交叉信息校 -险请求前， 查询所述迁移指示消息中的路 由信息是否正确， 若是， 开始控制平面信令的创建；
所述时隙资源迁移模块， 还用于当所在迁移节点为源节点或中间 节点时， 在进行时隙资源迁移后， 向下游节点发送携带有时隙资源迁 移场景的指示信令；
所述交叉连接迁移模块， 还用于当所在迁移节点为源节点时， 在 进行交叉连接迁移后， 向管理平面上报迁移成功消息； 当所在迁移节 点为中间节点或宿节点时， 在进行交叉连接迁移后， 向上游节点发送 携带有交叉连接迁移场景的指示信令。 如权利要求 9所述的迁移节点， 其特征在于， 还包括： 连接建立场景刷新模块， 用于将当前迁移场景更改为连接建立场 景。
PCT/CN2009/075712 2009-07-07 2009-12-18 一种自动交换光网络中业务迁移的方法和装置 WO2011003260A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09847011A EP2360857A4 (en) 2009-07-07 2009-12-18 METHOD AND DEVICE FOR TRANSMITTING SERVICE IN AUTOMATIC OPTICAL NETWORKS
US13/140,283 US9380359B2 (en) 2009-07-07 2009-12-18 Method and a device of service migration in an automatically switched optical network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910158341.0 2009-07-07
CN2009101583410A CN101945308B (zh) 2009-07-07 2009-07-07 一种自动交换光网络中业务迁移的方法和装置

Publications (1)

Publication Number Publication Date
WO2011003260A1 true WO2011003260A1 (zh) 2011-01-13

Family

ID=43428748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/075712 WO2011003260A1 (zh) 2009-07-07 2009-12-18 一种自动交换光网络中业务迁移的方法和装置

Country Status (4)

Country Link
US (1) US9380359B2 (zh)
EP (1) EP2360857A4 (zh)
CN (1) CN101945308B (zh)
WO (1) WO2011003260A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046062B3 (de) * 2009-10-27 2011-04-14 Airbus Operations Gmbh Vorrichtung und Verfahren zur Übertragung von Daten über Netzwerk-Knoten eines Netzwerkes
CN111404647B (zh) * 2019-01-02 2023-11-28 中兴通讯股份有限公司 一种节点协同关系的控制方法及相关设备
CN110392318B (zh) * 2019-07-29 2021-10-19 烽火通信科技股份有限公司 Ason中控制平面层lsp通道的校验方法及系统
CN111858458B (zh) * 2020-06-19 2022-05-24 苏州浪潮智能科技有限公司 一种互联通道的调整方法、装置、系统、设备和介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101198077A (zh) * 2006-12-08 2008-06-11 中兴通讯股份有限公司 自动交换光网络中的连接控制方法
CN101299893A (zh) * 2008-06-03 2008-11-05 中兴通讯股份有限公司 一种自动交换光网络中基于状态转换的迁移方法
CN101325814A (zh) * 2008-07-23 2008-12-17 中兴通讯股份有限公司 一种自动交换光网络中实现资源状态管理的方法和系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2255383A1 (en) * 1998-12-04 2000-06-04 Newbridge Networks Corporation Conversion of a permanent connection into a signalled permanent connection and vice versa
CN1277375C (zh) * 2003-07-31 2006-09-27 华为技术有限公司 一种光网络中永久连接和交换连接之间的转换方法
US7027388B2 (en) * 2003-12-15 2006-04-11 Ciena Corporation 1+1 Mesh protection
US7287081B1 (en) * 2003-12-17 2007-10-23 Nortel Networks Limited Controlled calls in a transmission network
JP4691372B2 (ja) * 2005-03-09 2011-06-01 富士通株式会社 データ中継装置およびデータ中継方法
CN100555951C (zh) * 2006-05-27 2009-10-28 华为技术有限公司 1+1单向子网连接保护的方法和采用该方法的通信网络
CN100508469C (zh) * 2006-12-21 2009-07-01 华为技术有限公司 一种在带宽按需分配业务中调整带宽的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101198077A (zh) * 2006-12-08 2008-06-11 中兴通讯股份有限公司 自动交换光网络中的连接控制方法
CN101299893A (zh) * 2008-06-03 2008-11-05 中兴通讯股份有限公司 一种自动交换光网络中基于状态转换的迁移方法
CN101325814A (zh) * 2008-07-23 2008-12-17 中兴通讯股份有限公司 一种自动交换光网络中实现资源状态管理的方法和系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2360857A4 *

Also Published As

Publication number Publication date
CN101945308B (zh) 2013-05-08
EP2360857A4 (en) 2013-02-27
CN101945308A (zh) 2011-01-12
US9380359B2 (en) 2016-06-28
EP2360857A1 (en) 2011-08-24
US20110255868A1 (en) 2011-10-20

Similar Documents

Publication Publication Date Title
EP2843888B1 (en) Dynamic end-to-end network path setup across multiple network layers
US7881183B2 (en) Recovery from control plane failures in the LDP signalling protocol
WO2007071189A1 (fr) Procede et dispositif de restauration d'un reseau maille partage
US20070274224A1 (en) Path setting method, node device, and monitoring/control device
WO2006039865A1 (fr) Procede permettant de mettre en oeuvre une decouverte automatique de structure de topologie dans le reseau boucle mpls
CN101087207A (zh) 一种多节点通信故障的处理方法
WO2006069523A1 (fr) Procede de recuperation de redemarrage de noeud dans un trajet de commutation multiprotocole par etiquette
WO2010109802A1 (ja) 自律分散制御によるパス設定方法およびシステム並びに通信装置
WO2005011302A1 (fr) Procede de transformation entre une connexion permanente et une connexion commute dans un reseau optique
CN101299893B (zh) 一种自动交换光网络中基于状态转换的迁移方法
WO2008043284A1 (fr) Procédé, système et dispositif noeud permettant d'établir une relation de mappage d'identificateurs
US20080205262A1 (en) Node controller and node system
JP5739960B2 (ja) パケット光ネットワークの宛先ノードに外部の光データパケットを提供する方法及びシステム
EP2538602B1 (en) Method and system for realizing hot standby in centralized network nodes
WO2012071909A1 (zh) 业务恢复方法及装置
WO2011003260A1 (zh) 一种自动交换光网络中业务迁移的方法和装置
WO2011022975A1 (zh) 一种网元内部光纤连接自动发现的方法、装置和系统
WO2012041142A1 (zh) 一种建立和拆除双向点到多点标签转发路径的方法及系统
WO2012075914A1 (zh) 一种实现点到多点标签交换路径保护的方法及系统
CN102098594B (zh) 一种基于信息扩散光网络的连接建立信令冲突避免方法
WO2014059570A1 (zh) 建立标签交换路径的方法、设备和系统
WO2006039871A1 (fr) Procede pour la transmission de message de commande dans un reseau en boucle a commutation multiprotocole par etiquette
WO2007071114A1 (fr) Procede pour le reacheminement sans interruption en reseau optique
CN1889397B (zh) 一种智能光网络中的业务路径建立方法
WO2012088956A1 (zh) Oduflex无损调整能力路由洪泛方法、装置及节点

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09847011

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009847011

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 13140283

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 4886/DELNP/2011

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: PI0924096

Country of ref document: BR

ENP Entry into the national phase

Ref document number: PI0924096

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20110721