WO2006105722A1 - Procede de mise en oeuvre d’une protection de reseau associant l'adscription double d'element de reseau et la protection de reseau local en anneau - Google Patents

Procede de mise en oeuvre d’une protection de reseau associant l'adscription double d'element de reseau et la protection de reseau local en anneau Download PDF

Info

Publication number
WO2006105722A1
WO2006105722A1 PCT/CN2006/000568 CN2006000568W WO2006105722A1 WO 2006105722 A1 WO2006105722 A1 WO 2006105722A1 CN 2006000568 W CN2006000568 W CN 2006000568W WO 2006105722 A1 WO2006105722 A1 WO 2006105722A1
Authority
WO
WIPO (PCT)
Prior art keywords
network element
network
service
ring
protection
Prior art date
Application number
PCT/CN2006/000568
Other languages
English (en)
French (fr)
Inventor
Xixiang Li
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.
Priority to EP06722220A priority Critical patent/EP1868322B1/en
Priority to AT06722220T priority patent/ATE509443T1/de
Publication of WO2006105722A1 publication Critical patent/WO2006105722A1/zh
Priority to US11/890,557 priority patent/US7764597B2/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42Loop networks
    • H04L12/437Ring fault isolation or reconfiguration
    • 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
    • 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

Definitions

  • the present invention relates to a protection technology for a communication network, and in particular, to a method for implementing network protection by combining network element dual-homing with ring network protection.
  • the networking of the data transmission network often adopts the dual-homing mode of the network element.
  • the network element P and the network elements A and B establish a service transmission path, and the service is transmitted between the network element P and the network element A through the service path (work path).
  • the service is transmitted through the path between the network element P and the network element B.
  • the network element P transmits the service to the network element A, and the path of the network element P to the network element B can be regarded as a protection path.
  • a dual-homed network can invalidate any node of network elements A and B without affecting service operations.
  • the service is sent from the network element P to the network element A, and the end point is the network element E. If the network element A fails, the network element P sends a service from the protection path to the network element B, and the network element B transmits the service to the network element through the ring network.
  • the network element D fails, the network element B transmits the service to the network element C through the ring network, and then transmits the network element to the dual-homed network of the network without the need for the connected network element (the network element or The network element ⁇ ) performs 1 + 1 hot backup, and realizes the protection switching of the service when the network intermediate node fails and the working path fails, thereby effectively saving the operator's investment.
  • Ring network protection generally uses multiplex section protection (MSP), and dual-homing protection usually needs to configure traffic forwarding or service transmission paths on the uplink network elements (network elements A, B), that is, on the uplink network element B.
  • the service of the network element P reserves bandwidth; the ring network protection reserves the protection bandwidth for the services on the network elements 8 and B, so that the services on the network element P occupy 4 times of the time when transmitting on the ring network.
  • Bandwidth As shown in Figure 2, only one-quarter of the bandwidth has services, and other bandwidths are reserved for the protection of services.
  • the present invention provides a method for implementing network protection by combining network element dual-homing with ring network protection, so as to solve the problem that the network element dual-homing and ring network protection in the prior art wastes network resources.
  • the present invention provides the following technical solutions:
  • a method for implementing network protection where the network has a first network element, and the first network element belongs to the second and third network elements on the same ring network; the method includes the following steps:
  • the second network element after the second network element establishes the service of the first network element, the second network element notifies the first network element by using the configuration synchronization message, and the first network element notifies the third network element by configuring the synchronization message.
  • the service configuration information includes network resources on the ring network allocated for the failed service.
  • the synchronization configuration information can also send the third network element through the network management system.
  • the shell IJ if the second network element reserves the network resource for protecting the failed service when the service of the first network element is established, the shell IJ:
  • a third network element establishes the service that fails between the first network element and the second network element, uses the network resource to transmit the service for protecting the failed service, and transmits the second network element to the original network element. Describe the network resources of the failed service as network resources for protecting the service; or
  • the second network element When the third network element establishes the service that fails between the first network element and the second network element, the second network element originally transmits the network resource transmission service of the failed service, and uses the network resource to transmit the service.
  • the network resources of the failed service serve as network resources for protecting the service.
  • the third network element further checks the service configuration information, verifies the correctness and integrity of the information, and whether to allow the third network element to establish a path for the failed service. If the verification fails, the alarm prompts and prohibits the failed service from being switched to the third network element.
  • the first network element when the service of the first network element to the second network element fails, the first network element is prohibited from transmitting the failed service to the third network element.
  • the ring network protects the MSP ring network, the channel ring, the RPR ring or the RMR ring for the multiplex section.
  • the ring network protection mode can be 1 + 1 protection mode or 1: 1 protection mode for the MSP.
  • the method of the present invention utilizes the working and protection bandwidth used by the network element before the switching on the ring network after the switching. Therefore, when the network element double-homing to the network element on the ring network does not cause an additional allocation on the ring network. Bandwidth, which can save a lot of ring network bandwidth resources, and even if the network elements on the ring network are dual-homed to the upper ring network, it will not cause the protection bandwidth to be copied.
  • the network element used for protection can obtain the service configuration information on the working network element, so that when the switching message is received, the fast switching of the failed service can be implemented.
  • FIG. 1 is a schematic diagram of dual-homing of network elements in the prior art
  • FIG. 2 is a schematic diagram of a ring network occupied by four times bandwidth in the prior art
  • FIG. 3 is a schematic diagram of a ring network occupied twice in bandwidth according to the present invention.
  • the present invention normally establishes a service only on the working network element in the two network elements of the dual-homing protection. And allocating and reserving network resources, not allocating and reserving network resources on the protection network element, and establishing and configuring network resources on the protection network element when performing protection switching, functioning as a service and network node protection and effective Take advantage of bandwidth.
  • the network element P is dual-homed to the two network elements A and the network element B on the same ring network, and the switching protocol is run between the network element P and the network element A, the network element P, and the network element B.
  • the service of the network element P is established only on the network element A.
  • the protection bandwidth of the ring network service is configured on the ring network
  • the network element A is connected to the ring network.
  • the service of the network element P reserves the bandwidth. In this case, the service of the network element P is not established on the network element B, and the bandwidth of the network element B is not reserved for the network element B.
  • the running switching protocol detects that all the services of the network element P to the network element A are invalid (and may be partially invalid), that is, when the network element A fails or the network element P to the network element A fails, the network element is notified. .
  • a protocol for maintaining the connection state of the path between the network element A and the network element P such as the OAM protocol.
  • the network element P will not receive the path connection status message, and the network element P sends a switching message to the network element B, and notifies the network element B to establish the service path of the network element P, and then the original network element P
  • the service to the network element A is switched to the service path of the network element P to the network element B for service transmission.
  • the service path from the network element P to the network element A is invalid. If the direction is P to A, the network element A cannot receive the path connection status message.
  • the element A sends a switching message from the A to the P to the network element P.
  • the network element P initiates a switching, and sends a switching message to the network element B, informing the network element B to establish a service path of the network element P, and then the original network element P
  • the service to the network element A is switched to the service path of the network element P to the network element B for service transmission. If the direction is from A to P, the switching process is similar to the failure of the network element A. In the above-mentioned one-way failover, only the service in the failure direction can be switched, or the two-way simultaneous switching, such as P to A direction and A to P direction.
  • the network configuration information is sent to the network element B through the network management.
  • the network element A retains the service configuration information on the network element A. , but does not establish a protected path and allocate corresponding network resources at the same time.
  • the network element B checks the service configuration information sent to ensure the correctness and integrity of the information and whether the path used by the service is allowed to be established on the network element B. That is, whether the network element B can have the appropriate channel, bandwidth, and Other network resources to allow protected services to be configured. If the check fails, traffic is forbidden to be switched to NE B.
  • the network element B When the network element B receives the switching message sent by the network element P, the network element B configures the path and allocates the corresponding bandwidth resource for the switched service.
  • the path and bandwidth allocation can reuse the working path and bandwidth used by the services of the previous network element P to A, and can also reuse the protection path in the ring network protection, that is, allocate in the protection path of the ring network instead of occupying the network element B. Free bandwidth on the ring network.
  • the network element P After the network element B feeds back the ready information to the network element P, the network element P starts to send the service to the network element B, and stops sending the service to the network element A. This not only conforms to the principle of ring network protection, but also does not waste ring network bandwidth.
  • the running switching protocol detects that only some services are invalid in the service from the network element P to the network element A, the detection method is as described in the previous switching process, and only the service of the failed part is switched from the network element A to the network element B.
  • the service is not switched; the network element P and the network element A are also established and transmitted on the network element B.
  • the service that fails between them; the service that the network element P stops sending to the network element A is also a failed service.
  • the network element P starts the protocol to monitor the state of the network element A.
  • the network element A and the network element B start to configure the synchronization message to synchronize the configuration information.
  • the network element A notifies the network element P, such as the network element, by configuring the synchronization message. Information about the ring network channel and bandwidth used by A.
  • the network element P notifies the network element B of the service configuration information of the network element A through the configuration synchronization message, and the network element B checks and temporarily stores the service configuration information of the network element A. If the verification fails, the alarm is reported to the network management system to notify the user of the intervention. At this time, the system prohibits the service from being switched to the network element B, and the service maintains the path between the network element P and the network element A.
  • the service configuration information of the network element A is used for service configuration.
  • the network element B can use the working path of the original network element A on the ring network, because the path is still complete on the ring network, and the protection path of the network element A on the ring network can also be used.
  • the working direction path of the network element B adopts the protection direction path of the network element A, and the protection direction path of the network element B uses the working direction path of the network element A, so that only the service of the network element P is only 2 times on the ring network. Bandwidth is occupied.
  • the working direction path of the network element B can also use the working direction path of the network element A, and the protection direction path of the network element B uses the protection direction path of the network element A, so that only the network element P can be realized only twice on the ring network.
  • the bandwidth of the business is occupied.
  • the ring network may be a multiplex section protection (MSP) ring, a channel ring, a resilient packet ring (RPR), or an elastic MPLS ring (RMR).
  • MSP multiplex section protection
  • RPR resilient packet ring
  • RMR elastic MPLS ring
  • the configuration of network resources on NE B is related to the ring network protection mode.
  • the multiplex section protection ring uses the protection slot
  • the channel ring uses the protection channel
  • the RPR ring is the protection direction flow.
  • the bandwidth is used according to the service level.
  • the RMR uses the protected LSP.
  • the secondary time slot is used on the network element B when the double-homed switchover occurs; the 1:1 protection mode of the MSP, the extra service of the spare time slot on the network element B is discarded when the dual-homed switchover occurs.
  • the present invention has the following features -
  • the service configuration information on NE A is saved, and the establishment of the configuration and the allocation of network resources are triggered by the switching message.
  • the service of the network element P is transferred from the network element A to the network element B, where the network element B
  • the service of the network element P is established and the service is received from the network element P to implement dual-homing protection.
  • network element B only establishes services and allocates ring network bandwidth when dual-homed switching occurs, the network element dual-homing to the network elements on the ring network does not cause additional protection bandwidth to be allocated on the ring network.
  • the network elements A and B are dual-homed to the upper ring network and do not cause protection bandwidth replication.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Small-Scale Networks (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Optical Communication System (AREA)

Description

通过网元双归属与环网保护结合实现网络保护的方法 技术领域
本发明涉及通信网络的保护技术, 尤其涉及一种通过网元双归属与环网 保护结合实现网络保护的方法。
背景技术
随着通信产业的飞速发展, 光传送网络也不断经历着深刻的变革。 数据 业务的蓬勃兴起, 使得多协议标签交换(MPLS)技术得以广泛应用, 从网络 的层次上, 出现了数据传送网和网元双归属的保护方式。
数据传送网的组网常常采用网元双归属的方式。如图 1所示, 网元 P与网元 A、 B间各建立业务传送的路径并在网元 P与网元 A之间通过业务路径 (工作路 径)传送业务, 当网元 A失效时可通过网元 P与网元 B之间的路径传送业务, 正 常情况只有网元 P向网元 A传送业务, 网元 P向网元 B的路径可看作保护路径。
双归属的组网可以使得网元 A、 B任意一个节点失效均不会影响业务运 行。 比如业务从网元 P发到网元 A, 终点是网元 E, 如果网元 A失效, 则网元 P 从保护路径发送业务到网元 B, 网元 B通过环网将业务传送到网元 D, 再传送 到网元 E; 如果网元 D失效, 网元 B通过环网将业务传送到网元 C, 再传送到网 双归属的组网不需要汇接的网元(网元 Α或者网元 Β)进行 1 + 1的热备份, 并实现了网络中间节点失效和工作路径失效时的业务的保护倒换, 因而可有 效节省运营商的投入。
环网保护一般采用复用段保护(MSP), 而双归属保护通常需要在上行网 元(网元 A、 B)上分别配置业务转发或者业务传送的路径, 即在上行网元 B上分别为网元 P的业务预留了带宽;而环网保护将会为网元八、 B上的业务再 预留保护带宽, 这样网元 P上的业务在环网上传送时即占用了 4倍于自己的带 宽。 如图 2所示, 其中只有四分之一的带宽有业务, 其他带宽均是因为业务保 护的需要而预留的保护带宽。
通常环网的保护只需在工作路径之外额外预留一倍的保护带宽就足够 了, 而按照现有技术中网元双归属与环网保护的配合, 在环网中会出现只能 利用四分之一的带宽, 就造成了环网带宽的极大浪费。 如果简单地将网元 A、 B又向上一层环网双归属, 贝 元 P的业务所占用的带宽在上层环网上将会被 扩大到 16倍。
进一步, 由于现有技术中对于双归属的组网没有相关的快速倒换机制, 在工作业务失效后, 一般是通过重新路由来获得保护的路径, 耗时较长, 难 以达至 lj50ms以下, 因此不能有效支持时间敏感的业务, 比如语音和图像业务。 发明内容
本发明提供一种通过网元双归属与环网保护结合实现网络保护的方法, 以解决现有技术中网元双归属与环网保护的配合存在浪费网络资源的问题。
为解决上述问题, 本发明提供以下技术方案:
一种网络保护的实现方法, 所述网络中具有第一网元, 该第一网元归属 于在同一个环网上的第二和第三网元; 该方法包括如下步骤:
在第二网元上建立和传送第一网元发给第二网元的业务, 并检测该业务 的状态; 以及
检测到第一网元与第二网元之间的业务失效时向第三网元发送倒换消 息, 该第三网元依据所述倒换消息, 使用在业务失效前第二网元上为所述失 效业务分配的环网上的网络资源, 建立和传送在第一网元与第二网元之间失 效的业务。
在上述方法中, 第二网元建立第一网元的业务后, 第二网元将业务配置 信息通过配置同步消息通知第一网元, 由第一网元通过配置同步消息通知第 三网元, 所述业务配置信息包括为所述失效业务分配的环网上的网络资源。 同样, 同步配置信息也可以通过网管发送第三网元。
在上述方法中, 如果第二网元建立第一网元的业务时预留了用于保护所 述失效业务的网络资源, 贝 IJ :
a. 第三网元建立所述在第一网元和第二网元之间失效的业务时使用所述 用于保护所述失效业务的网络资源传送业务, 并将第二网元原来传送所述失 效业务的网络资源作为保护业务的网络资源; 或者
b. 第三网元建立所述在第一网元和第二网元之间失效的业务时使用第 二网元原来传送所述失效业务的网络资源传送业务, 并将所述用于保护所述 失效业务的网络资源作为保护业务的网络资源。
在上述方法中,第三网元收到所述业务配置信息后进一步对其进行校验, 校验信息的正确性和完整性以及是否允许在第三网元建立失效业务使用的路 径。 若校验失败则告警提示并禁止失效业务倒换到第三网元。
在上述方法中, 在检测到第一网元到第二网元的业务失效时禁止第一网 元向第三网元传送失效的业务。
所述环网为复用段保护 MSP环网、 通道环、 RPR环或 RMR环。
所述环网保护方式对 MSP可以为 1 + 1保护方式或 1: 1保护方式。
与现有技术相比, 本发明的方法在倒换后利用环网上倒换前的网元使用 的工作和保护带宽, 因此, 网元向环网上的网元双归属时不会导致环网上分 配额外的带宽, 从而可节约大量的环网带宽资源, 并且即使环网上的网元向 上一层环网双归属, 也不会导致保护带宽的复制。 另外, 用作保护的网元可 以获得工作网元上的业务配置信息, 从而在收到倒换消息时, 可以实现失效 业务的快速倒换。
附图说明
图 1为现有技术中网元双归属的示意图;
图 2为现有技术中环网被占用四倍带宽的示意图;
图 3为本发明中环网被占用 2倍带宽的示意图。
具体实施方式
为了解决现有技术在网元双归属与环网保护配合时存在大量占用带宽等 资源的问题, 本发明在正常情况下, 只在双归属保护的两个网元中的工作网 元上建立业务, 并分配和预留网络资源, 在保护网元上不分配和预留网络资 源, 当进行保护倒换时才在保护网元上建立和配置网络资源, 起到业务和网 络节点保护的作用并有效利用了带宽。
参阅图 3所示, 网元 P向同一环网上的两个网元 A和网元 B双归属, 网元 P 与网元 A、 网元 P与网元 B之间运行倒换协议。在正常情况下(即网元八、 网元 B均工作正常), 只在网元 A上建立网元 P的业务, 环网上配置环网业务的保护 带宽时, 在环网上为网元 A到网元 P的业务预留保护带宽, 在这种情况下不在 网元 B上建立网元 P的业务, 也不为网元 P的业务在网元 B上预留带宽。 当运行的倒换协议检测到网元 P到网元 A的业务全部失效(也可能是部分 失效), 即网元 A失效或网元 P到网元 A的线路失效时通知网元?。 其过程是: 在网元 A和网元 P之间运行维护路径连接状态的协议,如 OAM协议。当网 元 A失效时, 网元 P将不能收到路径连接状态消息, 则网元 P向网元 B发送倒换 消息, 通知网元 B建立网元 P的业务路径, 然后将原来由网元 P到网元 A的业务 切换到网元 P到网元 B的业务路径进行业务传送。当网元 P到网元 A之间的线路 失效时, 网元 P到网元 A的业务路径会失效, 如果是 P到 A的方向, 网元 A会不 能收到路径连接状态消息, 则网元 A从 A到 P的方向发送倒换消息给网元 P, 网 元 P启动倒换, 并向网元 B发送倒换消息, 通知网元 B建立网元 P的业务路径, 然后将原来由网元 P到网元 A的业务切换到网元 P到网元 B的业务路径进行业 务传送。 如果是 A到 P的方向, 则倒换过程与网元 A失效类似。 上述的单方向 失效倒换时可以只倒换失效方向的业务, 也可以双向同时倒换, 比如 P到 A方 向和 A到 P方向。
网元 A在建立了业务路径并分配了网络资源后, 会通过消息或者由网络 操作员通过网管将业务配置信息发送给网元 B, 则网元 B上保留了网元 A上的 业务配置信息, 但并不同时建立保护的路径和分配相应的网络资源。 网元 B 会对发来的业务配置信息进行校验, 以保证信息的正确性和完整性以及业务 使用的路径是否允许在网元 B建立, 即网元 B是否可以有合适的通道、 带宽和 其他网络资源来允许被保护的业务进行配置。 如果校验不通过, 则禁止业务 倒换到网元 B。
在网元 B接收到网元 P发来的倒换消息时, 网元 B才为被倒换的业务配置 路径和分配相应的带宽资源。 路径和带宽的分配可以重用以前网元 P到 A的业 务所使用的工作路径和带宽, 也可以重用环网保护中的保护路径, 即在环网 的保护路径中进行分配而不是占用网元 B在环网上的空闲带宽。 网元 B向网元 P反馈就绪信息后,网元 P开始向网元 B发送业务,同时停止向网元 A发送业务。 这样不仅符合环网保护的原则, 也不会浪费环网带宽。
若运行的倒换协议检测到网元 P到网元 A的业务中只是部分业务失效, 检 测方法如前面倒换过程所述, 则从网元 A向网元 B倒换的只是失效部分的业 务, 正常的业务不进行倒换; 在网元 B上建立和传送的也是在网元 P与网元 A 之间失效的业务; 同样网元 P向网元 A停止发送的业务也只是失效的业务。 在倒换前, 为了使网元 B能够使用环网原来留给网元 A上的网元 P的业务 (即失效的业务) 的工作带宽和保护带宽, 在网元 A建立网元 P的业务后, 网 元 P启动协议监测网元 A的状态,网元 A和网元 B启动配置同步消息进行配置信 息同步; 网元 A通过配置同步消息将自身的业务配置信息通知网元 P, 比如网 元 A使用的环网通道、 带宽等信息; 网元 P将网元 A的业务配置信息通过配置 同步消息通知网元 B, 网元 B对网元 A的业务配置信息进行校验和暂存; 若校 验失败, 则向网络管理系统上报告警, 通知用户干预。 此时系统禁止业务倒 换到网元 B, 业务维持在网元 P和网元 A之间的路径。 若校验成功, 当网元 B 接收倒换消息后, 利用网元 A的业务配置信息进行业务配置。 网元 B可以利用 原来网元 A在环网上的工作路径, 因为在环网上该路径还是完整的, 也可以 使用网元 A在环网上的保护路径。 这时, 网元 B的工作方向路径采用网元 A的 保护方向路径, 而网元 B的保护方向路径则采用网元 A的工作方向路径, 这样 在环网上只有 2倍网元 P的业务的带宽被占用。 当然, 网元 B的工作方向路径 也可以采用网元 A的工作方向路径, 同时网元 B的保护方向路径采用网元 A的 保护方向路径,这样也可以实现在环网上只有 2倍网元 P的业务的带宽被占用。
在本发明中, 环网可以是复用段保护 (MSP) 环、 通道环、 弹性分组环 (RPR)或弹性 MPLS环 (RMR)等。 在发生双归属倒换时., 网元 B上网络资 源的配置方式与环网保护方式有关。 如复用段保护环使用的是保护时隙, 通 道环使用的是保护通道, RPR环则是保护方向的流, 按业务等级使用带宽, RMR使用的是保护的 LSP。
对于 MSP的 1 + 1保护方式, 发生双归属倒换时网元 B上使用备用时隙; MSP的 1 : 1保护方式,发生双归属倒换时网元 B上备用时隙的额外业务被丢弃。
从上述可知, 本发明具有以下特点-
1. 只有运行了业务的网元 A分配带宽, 不需要为不运行业务并处于保护 状态的网元 B分配带宽。
2. 处于保护位置的网元 B上保存了网元 A上的业务配置信息,通过倒换消 息触发配置的建立和网络资源的分配。
3. 在发生双归属的保护后, 网元 P的业务从网元 A转到网元 B, 在网元 B 上建立网元 P的业务并开始从网元 P接收业务, 实现双归属的保护。
4. 网元 B建立业务时, 利用网元 A原来使用的工作和保护带宽。
5. 由于网元 B只在双归属倒换时才建立业务并分配环网带宽, 因而网元 向环网上的网元双归属, 不会导致环网上分配额外的保护的带宽。
6. 由于网元 B在正常工作时不建立保护的业务, 不分配保护的带宽, 则 网元 A、 B向上一层环网双归属, 不会导致保护带宽的复制。
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, 倘若对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. 一种通过网元双归属与环网保护结合实现网络保护的方法, 所述网络 中具有第一网元, 该第一网元归属于在同一个环网上的第二和第三网元; 其 特征在于, 该方法包括以下步骤:
在第二网元上建立和传送第一网元发送给第二网元的业务, 并检测该业 务的状态; 以及
检测到第一网元与第二网元之间的业务失效时向第三网元发送倒换消 息, 该第三网元依据所述倒换消息, 使用在业务失效前第二网元上为所述失 效业务分配的环网上的网络资源, 建立和传送在第一网元与第二网元之间失 效的业务。
2. 如权利要求 1所述的方法, 其特征在于, 第二网元建立第一网元的业 务后将业务配置信息通过配置同步消息通知第一网元, 由第一网元通过配置 同步消息通知第三网元, 所述业务配置信息包括为所述失效业务分配的环网 上的网络资源。
3. 如权利要求 1所述的方法, 其特征在于, 在第二网元建立第一网元的 业务后, 通过网管将业务配置信息发送到第三网元, 所述业务配置信息包括 为所述失效业务分配的环网上的网络资源。
4. 如权利要求 1至 3任一项所述的方法, 其特征在于, 若第二网元建立第 一网元的业务时预留了用于保护所述失效业务的网络资源, 则
a. 第三网元建立所述在第一网元和第二网元之间失效的业务时使用所述 用于保护所述失效业务的网络资源传送业务, 并将第二网元原来传送所述失 效业务的网络资源作为保护业务的网络资源; 或者
b. 第三网元建立所述在第一网元和第二网元之间失效的业务时使用第 二网元原来传送所述失效业务的网络资源传送业务, 并将所述用于保护所述 失效业务的网络资源作为保护业务的网络资源。
5. 如权利要求 4所述的方法, 其特征在于, 第三网元收到所述业务配置 信息后进行正确性和完整性校验、 以及是否允许在第三网元建立失效业务使 用的路径, 若校验失败则告警提示并禁止失效业务倒换到第三网元。
6. 如权利要求 1所述的方法, 其特征在于, 在检测到第一网元到第二网 元的业务失效时第一网元停止向第二网元传送失效的业务。
7. 如权利要求 1所述的方法, 其特征在于, 所述环网为复用段保护 MSP 环网、 通道环、 RPR环或 RMR环。
8. 如权利要求 7所述的方法, 其特征在于, 所述环网保护方式对 MSP可 以为 1 + 1保护方式或 1 : 1保护方式。
PCT/CN2006/000568 2005-04-04 2006-03-31 Procede de mise en oeuvre d’une protection de reseau associant l'adscription double d'element de reseau et la protection de reseau local en anneau WO2006105722A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06722220A EP1868322B1 (en) 2005-04-04 2006-03-31 A method for implementing network protection combining the network element double-adscription and the ringnet protection
AT06722220T ATE509443T1 (de) 2005-04-04 2006-03-31 Verfahren zur implementierung eines netzwerkschutzes durch kombination einer doppelten zuschreibung von netzwerkelementen und ringnetzschutz
US11/890,557 US7764597B2 (en) 2005-04-04 2007-08-06 Method for implementing network protection combining network element dual homing and ring network protection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200510063129.8 2005-04-04
CN2005100631298A CN1848714B (zh) 2005-04-04 2005-04-04 通过网元双归属与环网保护结合实现网络保护的方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/890,557 Continuation US7764597B2 (en) 2005-04-04 2007-08-06 Method for implementing network protection combining network element dual homing and ring network protection

Publications (1)

Publication Number Publication Date
WO2006105722A1 true WO2006105722A1 (fr) 2006-10-12

Family

ID=37073090

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/000568 WO2006105722A1 (fr) 2005-04-04 2006-03-31 Procede de mise en oeuvre d’une protection de reseau associant l'adscription double d'element de reseau et la protection de reseau local en anneau

Country Status (6)

Country Link
US (1) US7764597B2 (zh)
EP (1) EP1868322B1 (zh)
CN (1) CN1848714B (zh)
AT (1) ATE509443T1 (zh)
ES (1) ES2365864T3 (zh)
WO (1) WO2006105722A1 (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8005102B2 (en) 2008-03-31 2011-08-23 Futurewei Technologies, Inc. System and method for scheduling variable bit rate (VBR) streams in a wireless communications system
CN101291276B (zh) * 2008-06-18 2010-12-08 中国电信股份有限公司 一种基于业务的隧道保护方法和系统
ES2341214B1 (es) * 2008-12-15 2011-05-24 Telefonica, S.A. Metodo y sistema para identificar y caracterizar el impacto de incidencias en red sobre los servicios de telecomunicacion ofrecidos a usuario.
CN102142976B (zh) * 2010-02-01 2015-04-01 中兴通讯股份有限公司 一种网状网保护域的共享保护方法及系统
CN102201985B (zh) * 2011-05-06 2014-02-05 杭州华三通信技术有限公司 多协议标签交换传送技术环保护倒换方法及节点
US9369341B2 (en) * 2011-05-15 2016-06-14 Orbit Communication Systems Ltd. Static ring network for vehicle communications
US9077641B2 (en) * 2011-05-15 2015-07-07 Orbit Communication Systems Ltd. Static ring network for vehicle communications
CN103490921B (zh) * 2013-09-09 2017-06-20 华为技术有限公司 网络保护方法、装置、下环节点及系统
US9559892B2 (en) * 2014-04-16 2017-01-31 Dell Products Lp Fast node/link failure detection using software-defined-networking
CN105530115B (zh) * 2014-10-23 2019-10-22 华为技术有限公司 一种实现操作管理维护功能的方法及装置
CN108347342B (zh) * 2017-01-24 2021-05-25 普天信息技术有限公司 一种tmf网元重启后恢复业务的方法及网元

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003005623A2 (en) * 2001-07-06 2003-01-16 Ciena Corporation Protection path resources allocating method and system
US20030031124A1 (en) 2001-08-13 2003-02-13 Chow Timothy Y. Inter-working mesh telecommunications networks
US6643464B1 (en) * 1999-07-07 2003-11-04 Nortel Networks Limited Constrained optical mesh protection for transmission systems
CN1459160A (zh) * 2000-07-20 2003-11-26 北方电讯网络有限公司 光通信的保护装置和方法
CN1567889A (zh) * 2003-06-25 2005-01-19 华为技术有限公司 一种主备设备自动切换的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03164837A (ja) * 1989-11-22 1991-07-16 Hitachi Ltd 通信制御処理装置の切替方法
US5517498A (en) * 1993-09-20 1996-05-14 International Business Machines Corporation Spatial reuse of bandwidth on a ring network
WO2000076092A1 (en) * 1999-06-07 2000-12-14 Chromatis Networks, Inc. Dual homing for dwdm networks in fiber rings
US7342873B1 (en) * 2000-06-06 2008-03-11 Lucent Technologies Inc. Efficient architectures for protection against network failures
WO2002007390A1 (en) * 2000-07-17 2002-01-24 Kabushiki Kaisha Toshiba Self-relief method and re-estabishing method for traffic
US7130263B1 (en) * 2001-03-31 2006-10-31 Redback Networks Inc. Heterogeneous connections on a bi-directional line switched ring
US20030005165A1 (en) * 2001-06-28 2003-01-02 Dave Langridge Protection switching in ring-configured networks
US6990320B2 (en) * 2002-02-26 2006-01-24 Motorola, Inc. Dynamic reallocation of processing resources for redundant functionality
JP4125109B2 (ja) * 2002-12-12 2008-07-30 富士通株式会社 インターフェース装置,sonet多重分離装置,伝送システムおよびフレーム伝送方法
US6928050B2 (en) * 2003-05-06 2005-08-09 Overture Networks, Inc. Protected switching ring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6643464B1 (en) * 1999-07-07 2003-11-04 Nortel Networks Limited Constrained optical mesh protection for transmission systems
CN1459160A (zh) * 2000-07-20 2003-11-26 北方电讯网络有限公司 光通信的保护装置和方法
WO2003005623A2 (en) * 2001-07-06 2003-01-16 Ciena Corporation Protection path resources allocating method and system
US20030031124A1 (en) 2001-08-13 2003-02-13 Chow Timothy Y. Inter-working mesh telecommunications networks
CN1567889A (zh) * 2003-06-25 2005-01-19 华为技术有限公司 一种主备设备自动切换的方法

Also Published As

Publication number Publication date
US20070274207A1 (en) 2007-11-29
CN1848714B (zh) 2010-06-23
US7764597B2 (en) 2010-07-27
ES2365864T3 (es) 2011-10-11
ATE509443T1 (de) 2011-05-15
EP1868322A4 (en) 2008-04-09
EP1868322B1 (en) 2011-05-11
CN1848714A (zh) 2006-10-18
EP1868322A1 (en) 2007-12-19

Similar Documents

Publication Publication Date Title
WO2006105722A1 (fr) Procede de mise en oeuvre d’une protection de reseau associant l'adscription double d'element de reseau et la protection de reseau local en anneau
EP2458797B1 (en) Method, device and system for updating ring network topology information
EP3691185B1 (en) Method for processing message, device, and system
JP3972664B2 (ja) パス障害回復方式及び障害復旧後の切戻方式並びにそれらを用いるノード
CA2570333C (en) Method for implementing bidirectional protection switching in multiple protocol label switching network
WO2018099161A1 (zh) 保护倒换方法、网络设备及系统
US8004968B2 (en) Provider edge-controlled redundancy using pseudo link aggregation control protocol
JP4790591B2 (ja) リングノード装置
WO2008046358A1 (fr) Procédé et dispositif destinés à réaliser une pénétration d'un statut de liaison de réseau point à multipoint
CA2762924C (en) Method, apparatus and system for two-node cluster hot backup
WO2008089633A1 (fr) Procédé et appareil pour protéger un anneau éthernet
EP2533474A1 (en) Method, apparatus and system for forwarding data
CN103026663B (zh) 分布式连通性验证协议冗余
JP6027688B2 (ja) リングネットワークプロテクションにおけるラベル自動割当てのための方法及び装置
EP3217608B1 (en) Switchback delay methods and devices
JP6308534B2 (ja) ネットワーク保護方法およびネットワーク保護装置、オフリングノード、ならびにシステム
CN101800774A (zh) 一种接入环保护方法及接入环保护网络
WO2011095101A1 (zh) 一种分组传送网络的线性1:n保护方法、装置和系统
WO2009082894A1 (fr) Procédé, système et équipement pour la mise en œuvre d'une commutation automatique de protection entre cartes principales et de réserve
WO2009055995A1 (en) Maintaining method for automatic switched optical network system when operation engenders alarm
CN102238067B (zh) 一种快速环网保护协议环上的切换方法和装置
WO2010121459A1 (zh) 一种自动交换光网络中实现保护与恢复的方法及系统
KR100701105B1 (ko) Ip 기반 네트워크에서 제어채널 구성 및 보호 방법과상태 천이 방법
WO2008037162A1 (fr) Procédé de gestion de services dans un réseau optique intelligent
WO2012097571A1 (zh) 恢复环网业务的方法及节点设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2006722220

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 11890557

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

NENP Non-entry into the national phase

Ref country code: RU

WWW Wipo information: withdrawn in national office

Country of ref document: RU

WWP Wipo information: published in national office

Ref document number: 11890557

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 2006722220

Country of ref document: EP