WO2013067883A1 - 一种自动切换的方法和系统 - Google Patents

一种自动切换的方法和系统 Download PDF

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Publication number
WO2013067883A1
WO2013067883A1 PCT/CN2012/083205 CN2012083205W WO2013067883A1 WO 2013067883 A1 WO2013067883 A1 WO 2013067883A1 CN 2012083205 W CN2012083205 W CN 2012083205W WO 2013067883 A1 WO2013067883 A1 WO 2013067883A1
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WO
WIPO (PCT)
Prior art keywords
entity
state
protection
node
working
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PCT/CN2012/083205
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English (en)
French (fr)
Inventor
刘国满
罗彬�
张媛媛
Original Assignee
中兴通讯股份有限公司
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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 EP12847212.3A priority Critical patent/EP2765738A4/en
Publication of WO2013067883A1 publication Critical patent/WO2013067883A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06Management of faults, events, alarms or notifications
    • H04L41/0654Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0663Performing the actions predefined by failover planning, e.g. switching to standby network elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/08Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0817Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/22Alternate routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/28Routing or path finding of packets in data switching networks using route fault recovery

Definitions

  • the present invention relates to the field of protection, and in particular, to an automatic switching method and system. Background technique
  • the technical problem to be solved by the present invention is to propose an automatic switching method and system to improve the utilization of shared resources.
  • an automatic switching method including:
  • the node on the protection entity detects or is notified by other nodes that the link or node resource is faulty, and/or, the protection resource is preempted by the high priority service, and/or, when the external command is received, the state of the working entity is judged, When the working entity state meets the preset condition, it switches to the working entity.
  • the foregoing method may further have the following feature: the working entity state meets a preset condition, including:
  • the working entity state is better than the protection entity state, or the protection entity state priority is higher than the working entity state priority, or the working entity state is normal.
  • the above method may further have the following features, the method further comprising: detecting, by a node on the working entity, a link or node resource failure by another node, and/or, when receiving the external command, protecting the entity The state is judged, when the state of the protected entity satisfies the second preset condition, Switch to the protection entity.
  • the protection entity state meeting the second preset condition includes:
  • the protection entity state is better than the working entity state, or the working entity state priority is higher than the protection entity state priority, or the protection entity state is normal.
  • the foregoing method may further have the following features, the method further comprising: when the node on the protection entity or the working entity detects or is notified of a change of state, notifying another node, where the state change includes one of: Combination:
  • Link or node resource failure resources are preempted by other high-priority services; link or node resource failures disappear; other high-priority services release preempted resources; external commands are received.
  • the foregoing method may further have the following feature: the advertising other nodes includes: advertising other nodes that are in the same protection entity or working entity.
  • the foregoing method may further have the following feature, the method further includes: when the intermediate node on the protection entity detects a link or a state change of a node or a state change by another node, releasing or preempting the corresponding resource , making its resources available or unavailable.
  • the above method may further have the following features, the extrinsic command including a resource lock command, and/or a resource lock release command.
  • the invention also provides an automatic switching system, comprising at least one working entity and a protection entity, the working entity and the protection entity comprising a plurality of nodes, wherein:
  • the nodes on the protection entity are set to: detect or be advertised by other nodes as a link or node resource failure, and/or protect resources from being preempted by high priority services, and/or receive external commands, to work entities
  • the status is judged, and when it meets the preset condition, it switches to the working entity.
  • the system may also have the following features: the meeting the preset condition includes: the working entity state is better than the protection entity state, or the protection entity state priority is higher than the working entity state priority, or the working entity state is normal.
  • the above system may also have the following features: the nodes on the working entity are set to: detect or be notified by other nodes of link or node resource failure, and/or, when receiving an external command, The state of the protection entity is judged, and when the state of the protection entity satisfies the second preset condition, the protection entity is switched.
  • the system may further have the following feature: the protection entity state satisfies the second preset condition, including:
  • the protection entity state is better than the working entity state, or the working entity state priority is higher than the protection entity state priority, or the protection entity state is normal.
  • the foregoing system may further have the following feature: the protection entity or the node on the working entity is further configured to: notify other nodes when the status change is detected or notified, and the status change includes one or a combination of the following:
  • Link or node resource failure resources are preempted by other high-priority services; link or node resource failures disappear; other high-priority services release preempted resources; external commands are received.
  • the advertising other nodes includes: advertising other nodes that are on the same protection entity or working entity.
  • the foregoing system may further have the following feature: the intermediate node on the protection entity is configured to: release or preempt the corresponding resource when the link or the node changes state or is notified by other nodes to change the resource. Become available or unavailable.
  • the above system may also have the following features, the extrinsic command including a resource lock command, and/or a resource lock release command.
  • the method and system according to the embodiment of the present invention increase the SF or SD or the shared resources on the protected entity or the link resources are preempted by other high priority services or/and After the resource is locked by an external command, it is automatically switched automatically to make better use of shared resources.
  • FIG. 1 is a schematic diagram of a module relationship according to an embodiment of the present invention.
  • Figure 2 is a schematic diagram of shared protection
  • FIG. 3 is a schematic diagram of automatic switching of working entity failures;
  • Figure 4 Schematic diagram of automatic recovery of high-priority service preemption;
  • Figure 5 shows a schematic diagram of releasing shared resources
  • FIG. 6 Schematic diagram of the automatic switching process. Preferred embodiment of the invention
  • An embodiment of the present invention provides an automatic switching method, including:
  • the node on the protection entity detects or is notified by other nodes that the link or node resource is faulty, and/or the protection resource is preempted by the high priority service, and/or receives an external command, such as: resource lock command,
  • the entity state is judged, and when it meets the preset condition, it is switched to the working entity.
  • the working entity status meets preset conditions, including:
  • the working entity state is better than the protection entity state, or the protection entity state priority is higher than the working entity state priority, or the working entity state is normal.
  • the different fault types are divided into different state priorities. The higher the priority, the worse the state. For example, in the existing standard: SF is greater than SD. If the working entity generates SD and the protection entity generates SF, it should automatically switch to The working entity is transferred.
  • the method further includes: detecting, by a node on the working entity, a link or node resource failure by another node, and/or, when receiving an external command, such as: a resource locking command, determining a state of the protection entity, When the protection entity state satisfies the second preset condition, it switches to the protection entity.
  • the protecting the entity state to satisfy the second preset condition includes:
  • the protection entity state is better than the working entity state, or the working entity state priority is higher than the protection entity state priority, or the protection entity state is normal.
  • the method further includes: when the node on the protection entity or the working entity detects or is notified of a change in state, notifying other nodes, one or a combination of the following:
  • Link or node resource failure resources are preempted by other high-priority services; link or node resource failures disappear; other high-priority services release preempted resources; external commands are received.
  • the above extrinsic commands include a resource lock command, and/or a resource lock release command.
  • the advertising other nodes includes:
  • the method further includes: when the intermediate node on the protection entity detects a state change of a link or a node or a state change by another node, releasing or preempting the part of the resource, making the resource available or unavailable Use status.
  • a node block diagram provided by an embodiment of the present invention mainly includes the following three modules: a detection module: used to detect a working entity or protection through a detection mechanism (such as an overhead byte or a detection packet). Whether the link and node resources on the entity are faulty (such as SF or SD, etc.) or whether their shared resources are preempted by other high-priority services, become available or unavailable, and change when the status is notified. In an available or non-available state; or/and, receiving an external lock or unlock command, may also become available or unavailable;
  • the advertisement module is configured to notify the working entity or other nodes on the protection entity by using the overhead byte or the notification information packet after the detecting module detects the state change of the link and the node resource on the working entity or the protection entity;
  • Switching module Used to trigger the corresponding automatic switching operation according to the detected change result of the node or link state on the working entity or the working entity, such as: switching from the working entity to the protection entity, or recovering from the protection entity to the working entity. For specific switching methods, refer to the method embodiment.
  • the fault detection mechanism is used to detect whether the link or node resource on the working entity and the protection entity has SF. Or / and SD fault status information or / and its resources are preempted by other high priority services / and / and receive an external lock command;
  • the node that detects the change of state including the upper node or the intermediate node of the protection entity, generates an advertisement information message and advertises it to other nodes; the advertisement information message can be forwarded directly to the pair through the protection entity.
  • End node, or hop by hop along the direction of the protection entity Reporting to other intermediate nodes or end nodes on the protection entity; or sending the advertisement information message to other intermediate nodes or end nodes through the second path;
  • the shared protection network structure diagram shown in FIG. 2 is taken as an example, including:
  • Step 201 as shown in FIG. 2, the protection entities (APQC, DRSF, GPQRSJ) corresponding to the three working entities (ABC, DEF, GHJ) respectively, and setting their priorities: DRSF>GPQRSJ>APQC, and these three Protection entities share two shared resources of PQ and RS;
  • Step 202 Perform fault detection on the respective working entity and the protection entity by using the fault detection mechanism.
  • the working entity GHJ detects the fault, and then determines the corresponding protection entity GPQRSJ. Whether it is in the available state, if it is available, then switch to the protection entity to transmit; otherwise, without switching, continue to detect the fault on the working entity and the protection entity;
  • Step 203 When the protection entity GPQRSJ transmits the protected service, the DEF of the working entity with high priority is also faulty. As shown in FIG. 4, since the RS shared resource needs to be preempted by the protection entity DRSF with high priority, The protection entity GPQRSJ becomes unavailable, waiting for a period when the working entity GHJ state priority is lower than the protection entity state priority After the time, the service is automatically restored to the working entity GHJ; in addition, the other shared nodes P and Q receive the fault information of the protection entity fed back by the other node, and release the shared resource occupied by the protection entity GPQRSJ, and become available. ;
  • Step 204 When another working entity ABC with low priority also detects a fault at this time, as shown in FIG. 5, since the PQ shared resource has been released by the protected entity GPQRSJ and becomes available, the protected entity APQC can be preempted. This part of the shared resource automatically switches to the protection entity APQC to deliver the service and improve the utilization of the shared resource.
  • An embodiment of the present invention further provides an automatic switching system, including at least one working entity and one protection entity, where the working entity and the protection entity comprise multiple nodes, where:
  • the node on the protection entity is configured to: detect or be advertised by other nodes as a link or node resource failure, and/or protect the resource from being preempted by the high priority service, and/or receive the external command, to the working entity
  • the status is judged, and when it meets the preset condition, it switches to the working entity.
  • the satisfying the preset condition includes:
  • the working entity state is better than the protection entity state, or the protection entity state priority is higher than the working entity state priority, or the working entity state is normal.
  • the node on the working entity is configured to: detect or be notified by another node of a link or node resource failure, and/or, when receiving an external command, determine a state of the protection entity, when the state of the protection entity satisfies When the two preset conditions are met, switch to the protection entity.
  • the condition that the protection entity state meets the second preset condition includes:
  • the protection entity state is better than the working entity state, or the working entity state priority is higher than the protection entity state priority, or the protection entity state is normal.
  • the node on the protection entity or the working entity is further configured to: notify other nodes when the status change is detected or notified, and the status change includes one or a combination of the following:
  • the link or node resource is faulty; the resource is preempted by other high-priority services; the link or node resource failure disappears; the other high-priority services release the preempted resources; the external command is received; the external command is received.
  • the advertising other nodes includes: Advertise other nodes on the same protected entity or work entity.
  • the intermediate node on the protection entity is configured to: release or preempt the corresponding resource when the link or node changes state or notify the other node to change the state, and make the resource become available or unavailable.
  • the foregoing external command includes a resource lock command, and/or a resource lock release command.
  • the method and system according to the embodiment of the present invention increase the SF or SD or the shared resources on the protected entity or the link resources are preempted by other high priority services or/and After the resource is locked by an external command, it is automatically switched automatically to make better use of shared resources.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
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Abstract

一种自动切换方法,包括:保护实体上的节点检测到或者被其它节点通告链路或节点资源故障,和/或,保护资源被高优先级业务抢占,和/或,接收到外在命令时,对工作实体状态进行判断,当工作实体状态满足预设条件时,切换到工作实体。本发明实施例还提供一种自动切换系统。本发明实施例实现了对保护实体的监测。

Description

一种自动切换的方法和系统
技术领域
本发明涉及保护领域, 特别的, 涉及一种自动切换方法和系统。 背景技术
对于现有的工作实体和保护实体之间自动切换过程, 主要根据工作路径 上是否发生 SF ( Signal Failure, 信号失败)或 SD ( Signal Degrade, 信号裂 化)情况, 来判断是否发生自动切换(如: 当工作实体出现故障时, 保护实 体不存在故障, 则切换到保护实体上进行业务发送; 若在工作实体上故障消 失时, 则再自动恢复到工作实体上进行发送) , 而并没有指出在保护实体也 发生故障或 /和其保护资源被其他更高优先业务所抢占或 /和接收到外在命令 如: 锁定命令时, 如何处理, 没有明确的实现方案。 发明内容
本发明所要解决的技术问题是提出一种自动切换方法和系统, 提高共享 资源利用率。
为了解决上述问题, 本发明提供了一种自动切换方法, 包括:
保护实体上的节点检测到或者被其它节点通告链路或节点资源故障 ,和 / 或, 保护资源被高优先级业务抢占, 和 /或, 接收到外在命令时, 对工作实体 状态进行判断, 当工作实体状态满足预设条件时, 切换到工作实体。
优选地, 上述方法还可具有以下特点, 所述工作实体状态满足预设条件 包括:
工作实体状态比保护实体状态好, 或者, 保护实体状态优先级高于工作 实体状态优先级, 或者, 工作实体状态正常。
优选地, 上述方法还可具有以下特点, 所述方法还包括: 工作实体上的 节点检测到或者被其它节点通告链路或节点资源故障, 和 /或, 接收到外在命 令时, 对保护实体状态进行判断, 当保护实体状态满足第二预设条件时, 切 换到保护实体。
优选地, 上述方法还可具有以下特点, 所述保护实体状态满足第二预设 条件包括:
保护实体状态比工作实体状态要好, 或者工作实体状态优先级高于保护 实体状态优先级, 或者保护实体状态正常。
优选地, 上述方法还可具有以下特点, 所述方法还包括: 所述保护实体 或工作实体上的节点检测到或被通告状态变化时, 通告其它节点, 所述状态 变化包括如下之一或其组合:
链路或节点资源故障; 资源被其它高优先级业务抢占; 链路或节点资源 故障消失; 其它高优先级业务释放被抢占的资源; 接收到外在命令。
优选地, 上述方法还可具有以下特点, 所述通告其它节点包括: 通告处于同一保护实体或工作实体上的其他节点。
优选地, 上述方法还可具有以下特点, 所述方法还包括, 所述保护实体 上的中间节点检测到链路或节点发生状态变化或被其他节点通告状态变化时, 则释放或抢占对应的资源, 使其资源变成可用或不可用状态。
优选地,上述方法还可具有以下特点,所述外在命令包括资源锁定命令, 和 /或, 资源锁定解除命令。
本发明还提供一种自动切换系统, 包括至少一个工作实体和一个保护实 体, 所述工作实体和保护实体包括多个节点, 其中:
所述保护实体上的节点设置为: 检测到或者被其它节点通告链路或节点 资源故障, 和 /或,保护资源被高优先级业务抢占, 和 /或接收到外在命令时, 对工作实体状态进行判断, 当其满足预设条件时, 切换到工作实体。
优选地, 上述系统还可具有以下特点, 所述满足预设条件包括: 工作实体状态比保护实体状态好, 或者, 保护实体状态优先级高于工作 实体状态优先级, 或者, 工作实体状态正常。
优选地, 上述系统还可具有以下特点, 所述工作实体上的节点设置为: 检测到或者被其它节点通告链路或节点资源故障,和 /或,接收到外在命令时, 对保护实体状态进行判断, 当保护实体状态满足第二预设条件时, 切换到保 护实体。
优选地, 上述系统还可具有以下特点, 所述保护实体状态满足第二预设 条件包括:
保护实体状态比工作实体状态要好, 或者工作实体状态优先级高于保护 实体状态优先级, 或者保护实体状态正常。 优选地, 上述系统还可具有以下特点, 所述保护实体或工作实体上的节 点还设置为: 检测到或被通告状态变化时, 通告其它节点, 所述状态变化包 括如下之一或其组合:
链路或节点资源故障; 资源被其它高优先级业务抢占; 链路或节点资源 故障消失; 其它高优先级业务释放被抢占的资源; 接收到外在命令。
优选地, 上述系统还可具有以下特点, 所述通告其它节点包括: 通告处于同一保护实体或工作实体上的其他节点。
优选地, 上述系统还可具有以下特点, 所述保护实体上的中间节点设置 为: 检测到链路或节点发生状态变化或被其他节点通告状态变化时, 释放或 抢占对应的资源, 使其资源变成可用或不可用状态。
优选地,上述系统还可具有以下特点,所述外在命令包括资源锁定命令, 和 /或, 资源锁定解除命令。
釆用本发明实施例所述方法和系统, 与现有技术相比, 增加了当保护实 体上节点或链路资源发生 SF或 SD或其上共享资源被其他高优先级业务所抢 占或 /和资源被外在命令所锁定后, 进行正确地自动切换操作, 以便更好利用 共享资源。 附图概述
图 1本发明实施例模块关系示意图;
图 2共享保护示意图;
图 3工作实体故障自动切换示意图; 图 4高优先级业务抢占自动恢复示意图;
图 5释放共享资源示意图;
图 6 自动切换流程示意图。 本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互任意组合。
本发明实施例提供一种自动切换方法, 包括:
保护实体上的节点检测到或者被其它节点通告链路或节点资源故障 ,和 / 或, 保护资源被高优先级业务抢占, 和 /或接收到外在命令, 如: 资源锁定命 令时, 对工作实体状态进行判断, 当其满足预设条件时, 切换到工作实体。
其中, 所述工作实体状态满足预设条件包括:
工作实体状态比保护实体状态好, 或者, 保护实体状态优先级高于工作 实体状态优先级, 或者, 工作实体状态正常。 其中, 对不同故障类型, 划分 成不同的状态优先级, 优先级越高表示状态越差, 如现有标准中: SF 大于 SD, 如果工作实体发生 SD, 保护实体发生 SF, 则应该自动切换到工作实体 上来传送。
其中, 所述方法还包括: 工作实体上的节点检测到或者被其它节点通告 链路或节点资源故障, 和 /或, 接收外在命令, 如: 资源锁定命令时, 对保护 实体状态进行判断,当保护实体状态满足第二预设条件时,切换到保护实体。
所述保护实体状态满足第二预设条件包括:
保护实体状态比工作实体状态要好, 或者工作实体状态优先级高于保护 实体状态优先级, 或者保护实体状态正常。 其中, 所述方法还包括: 所述保护实体或工作实体上的节点检测到或被 通告状态变化时, 通告其它节点, 如下之一或其组合:
链路或节点资源故障; 资源被其它高优先级业务抢占; 链路或节点资源 故障消失; 其它高优先级业务释放被抢占的资源; 接收到外在命令。 上述外在命令包括资源锁定命令, 和 /或, 资源锁定解除命令。
其中, 所述通告其它节点包括:
通告处于同一保护实体或工作实体上的其他节点。
其中, 所述方法还包括, 所述保护实体上的中间节点检测到链路或节点 发生状态变化或被其他节点通告状态变化时, 则释放或抢占该部分资源, 使 其资源变成可用或不可用状态。
如图 1所示,为本发明实施例提供的节点框图,主要包括以下三个模块: 检测模块: 用于通过检测机制 (如: 开销字节或检测报文等) , 来检测 工作实体或保护实体上链路和节点资源是否发生故障 (如: SF或 SD等)或 其共享资源是否被其他高优先级业务所抢占,变成可用或非可用状态,以及, 在被通告状态变化时, 变成可用或非可用状态; 或 /和, 接收外在锁定或解除 锁定命令, 也可变成可用或非可用状态;
通告模块: 用于当检测模块检测到工作实体或保护实体上链路和节点资 源发生状态变化后, 通过开销字节或通告信息报文通告给工作实体或保护实 体上其他节点;
切换模块: 用于根据检测到的保护实体或工作实体上节点或链路状态变 化结果, 来触发相应自动切换操作, 如: 从工作实体切换到保护实体, 或从 保护实体恢复到工作实体上。 具体切换方式参见方法实施例。
本发明实施例提供的自动切换方法, 包括:
1、 假如现有 3条工作实体( A-B-C, D-E-F, G-H-J )所对应保护实体共 享同一段链路 P-Q和 R-S; 首先通过故障检测机制来检测工作实体和保护实 体上链路或节点资源是否发生 SF或 /和 SD故障状态信息或 /和其资源被其他 高优先级业务所抢占或 /和接收到外在锁定命令;
他高优先级业务所抢占时, 则检测到状态变化的节点, 包括保护实体上端节 点或中间节点, 生成通告信息报文, 通告给其他节点; 其通告信息报文可以 通过保护实体直接转发给对端节点, 或沿着保护实体方向逐跳进行转发, 通 告给保护实体上其他中间节点或端节点; 或者通过第二路径来发送通告信息 报文给其他中间节点或端节点;
3、 当两端节点接收到状态变化通告报文或直接检测到状态发生变化时, 则发生自动切换或恢复, 如工作实体上发生故障(如 SF或 SD )或资源被其 他高优先级业务抢占或 /和接收到外在锁定命令时,则在保护实体上资源是可 用状态下, 切换到保护实体上进行传送; 或者当保护实体上节点或链路资源 发生故障 (如 SF或 SD )或者其上保护资源被其他高优先级业务所抢占或 / 和接收到外在锁定命令时,则在工作实体上当前状态信息比保护实体要好时, 或者, 工作实体状态优先级低于保护实体状态优先级, 等待一段时间后, 自 动恢复切换到工作实体上进行传送, 如图 6所示。
4、对于保护实体上的中间节点, 当检测到链路或节点发生状态变化或被 其他节点通告发生状态变化时, 则释放或抢占对应的资源, 使其资源变成可 用或不可用状态。
对于该自动切换或恢复的具体实现过程, 可以图 2所示共享保护网络结 构图为例, 包括:
步骤 201 , 以图 2所示, 由三个工作实体(A-B-C, D-E-F, G-H-J )分 别对应的保护实体( A-P-Q-C, D-R-S-F, G-P-Q-R-S-J ) , 并设定其优先级: D-R-S-F>G-P-Q-R-S-J>A-P-Q-C , 且这三个保护实体共享 P-Q和 R-S两段共 享资源;
步骤 202, 通过故障检测机制, 进行各自工作实体和保护实体上故障检 测, 当检测工作实体出现 SF或 SD故障, 如图 3所示, 工作实体 G-H-J上检 测到故障,再判断其对应保护实体 G-P-Q-R-S-J是否处于可用状态,若可用, 则切换到保护实体上传送; 否则, 不进行切换, 继续进行工作实体和保护实 体上故障检测;
步骤 203 , 当保护实体 G-P-Q-R-S-J传送被保护的业务时, 检测到优先 级高的工作实体 D-E-F也发生故障, 如图 4所示, 由于 R-S共享资源需要被 优先级高的保护实体 D-R-S-F所抢占, 则保护实体 G-P-Q-R-S-J变成不可用 状态, 当工作实体 G-H-J状态优先级低于保护实体状态优先级时, 等待一段 时间后, 自动恢复到工作实体 G-H-J上传送业务; 另外, 其他共享节点 P和 Q接收到其他节点所反馈过来的保护实体出现故障信息, 则释放该保护实体 G-P-Q-R-S-J所占用共享资源, 变成可用状态;
步骤 204, 当此时另一个优先级低的工作实体 A-B-C也检测到故障时, 如图 5所示, 由于 P-Q共享资源已经被保护实体 G-P-Q-R-S-J所释放, 变成 可用状态, 则保护实体 A-P-Q-C可以抢占这部分共享资源, 自动切换到保护 实体 A-P-Q-C传递业务, 提高共享资源利用率。
本发明实施例还提供一种自动切换系统, 包括至少一个工作实体和一个 保护实体, 所述工作实体和保护实体包括多个节点, 其中:
所述保护实体上的节点用于: 检测到或者被其它节点通告链路或节点资 源故障, 和 /或, 保护资源被高优先级业务抢占, 和 /或接收到外在命令时, 对工作实体状态进行判断, 当其满足预设条件时, 切换到工作实体。 其中, 所述满足预设条件包括:
工作实体状态比保护实体状态好, 或者, 保护实体状态优先级高于工作 实体状态优先级, 或者, 工作实体状态正常。
其中, 所述工作实体上的节点用于: 检测到或者被其它节点通告链路或 节点资源故障, 和 /或, 接收到外在命令时, 对保护实体状态进行判断, 当保 护实体状态满足第二预设条件时, 切换到保护实体。 其中, 所述保护实体状态满足第二预设条件包括:
保护实体状态比工作实体状态要好, 或者工作实体状态优先级高于保护 实体状态优先级, 或者保护实体状态正常。 其中, 所述保护实体或工作实体上的节点还用于: 检测到或被通告状态 变化时, 通告其它节点, 所述状态变化包括如下之一或其组合:
链路或节点资源故障; 资源被其它高优先级业务抢占; 链路或节点资源 故障消失; 其它高优先级业务释放被抢占的资源; 接收到外在命令; 接收到 外在命令。 其中, 所述通告其它节点包括: 通告处于同一保护实体或工作实体上的其他节点。
其中, 所述保护实体上的中间节点用于: 检测到链路或节点发生状态变 化或被其他节点通告状态变化时, 释放或抢占对应的资源, 使其资源变成可 用或不可用状态。
其中, 上述外在命令包括资源锁定命令, 和 /或, 资源锁定解除命令。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
工业实用性
釆用本发明实施例所述方法和系统, 与现有技术相比, 增加了当保护实 体上节点或链路资源发生 SF或 SD或其上共享资源被其他高优先级业务所抢 占或 /和资源被外在命令所锁定后, 进行正确地自动切换操作, 以便更好利用 共享资源。

Claims

权 利 要 求 书
1、 一种自动切换方法, 包括:
保护实体上的节点检测到或者被其它节点通告链路或节点资源故障 ,和 / 或, 保护资源被高优先级业务抢占, 和 /或, 接收到外在命令时, 对工作实体 状态进行判断, 当工作实体状态满足预设条件时, 切换到工作实体。
2、如权利要求 1所述的方法, 其中, 所述工作实体状态满足预设条件包 括:
工作实体状态比保护实体状态好, 或者, 保护实体状态优先级高于工作 实体状态优先级, 或者, 工作实体状态正常。
3、 如权利要求 1所述的方法, 其中, 所述方法还包括: 工作实体上的节 点检测到或者被其它节点通告链路或节点资源故障, 和 /或, 接收到外在命令 时, 对保护实体状态进行判断, 当保护实体状态满足第二预设条件时, 切换 到保护实体。
4、如权利要求 3所述的方法, 其中, 所述保护实体状态满足第二预设条 件包括:
保护实体状态比工作实体状态要好, 或者工作实体状态优先级高于保护 实体状态优先级, 或者保护实体状态正常。
5、 如权利要求 1所述的方法, 其中, 所述方法还包括: 所述保护实体或 工作实体上的节点检测到或被通告状态变化时, 通告其它节点, 所述状态变 化包括如下之一或其组合:
链路或节点资源故障; 资源被其它高优先级业务抢占; 链路或节点资源 故障消失; 其它高优先级业务释放被抢占的资源; 接收到外在命令。
6、 如权利要求 5所述的方法, 其中, 所述通告其它节点包括:
通告处于同一保护实体或工作实体上的其他节点。
7、 如权利要求 5所述的方法, 其中, 所述方法还包括, 所述保护实体上 的中间节点检测到链路或节点发生状态变化或被其他节点通告状态变化时, 则释放或抢占对应的资源, 使其资源变成可用或不可用状态。
8、 如权利要求 1、 3或 5所述的方法, 其中, 所述外在命令包括资源锁 定命令, 和 /或, 资源锁定解除命令。
9、一种自动切换系统, 包括至少一个工作实体和一个保护实体, 所述工 作实体和保护实体包括多个节点, 其中: 所述保护实体上的节点设置为: 检测到或者被其它节点通告链路或节点 资源故障, 和 /或,保护资源被高优先级业务抢占, 和 /或接收到外在命令时, 对工作实体状态进行判断, 当满足预设条件时, 切换到工作实体。
10、 如权利要求 9所述的系统, 其中, 所述满足预设条件包括: 工作实体状态比保护实体状态好, 或者, 保护实体状态优先级高于工作 实体状态优先级, 或者, 工作实体状态正常。
11、 如权利要求 9所述的系统, 其中, 所述工作实体上的节点设置为: 检测到或者被其它节点通告链路或节点资源故障,和 /或,接收到外在命令时, 对保护实体状态进行判断, 当保护实体状态满足第二预设条件时, 切换到保 护实体。
12、如权利要求 11所述的系统, 其中, 所述保护实体状态满足第二预设 条件包括:
保护实体状态比工作实体状态要好, 或者工作实体状态优先级高于保护 实体状态优先级, 或者保护实体状态正常。
13、 如权利要求 9所述的系统, 其中, 所述保护实体或工作实体上的节 点还设置为: 检测到或被通告状态变化时, 通告其它节点, 所述状态变化包 括如下之一或其组合:
链路或节点资源故障; 资源被其它高优先级业务抢占; 链路或节点资源 故障消失; 其它高优先级业务释放被抢占的资源; 接收到外在命令。
14、 如权利要求 13所述的系统, 其中, 所述通告其它节点包括: 通告处于同一保护实体或工作实体上的其他节点。
15、如权利要求 13所述的系统, 其中, 所述保护实体上的中间节点设置 为: 检测到链路或节点发生状态变化或被其他节点通告状态变化时, 释放或 抢占对应的资源, 使其资源变成可用或不可用状态。
16、 如权利要求 9、 11或 13所述的系统, 其中, 所述外在命令包括资源 锁定命令, 和 /或, 资源锁定解除命令。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1083710A2 (en) * 1999-09-09 2001-03-14 Nortel Networks Limited ATM group protection switching method and apparatus
CN101399697A (zh) * 2007-09-30 2009-04-01 华为技术有限公司 自动保护倒换的系统及方法
CN101843049A (zh) * 2007-11-02 2010-09-22 爱立信电话股份有限公司 用于提供商骨干桥接业务工程域中的以太网保护交换的系统和方法
CN101997713A (zh) * 2009-08-31 2011-03-30 中兴通讯股份有限公司 一种以太网路径保护的切换方法及系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7697455B2 (en) * 2004-02-17 2010-04-13 Dynamic Method Enterprises Limited Multiple redundancy schemes in an optical network

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1083710A2 (en) * 1999-09-09 2001-03-14 Nortel Networks Limited ATM group protection switching method and apparatus
CN101399697A (zh) * 2007-09-30 2009-04-01 华为技术有限公司 自动保护倒换的系统及方法
CN101843049A (zh) * 2007-11-02 2010-09-22 爱立信电话股份有限公司 用于提供商骨干桥接业务工程域中的以太网保护交换的系统和方法
CN101997713A (zh) * 2009-08-31 2011-03-30 中兴通讯股份有限公司 一种以太网路径保护的切换方法及系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2765738A4 *

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