WO2013091576A1 - 一种环网保护的实现方法及系统 - Google Patents

一种环网保护的实现方法及系统 Download PDF

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Publication number
WO2013091576A1
WO2013091576A1 PCT/CN2012/087209 CN2012087209W WO2013091576A1 WO 2013091576 A1 WO2013091576 A1 WO 2013091576A1 CN 2012087209 W CN2012087209 W CN 2012087209W WO 2013091576 A1 WO2013091576 A1 WO 2013091576A1
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Prior art keywords
shared
channel
node
service
fault
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PCT/CN2012/087209
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English (en)
French (fr)
Inventor
马玉霞
曲延锋
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中兴通讯股份有限公司
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Priority to EP12859815.8A priority Critical patent/EP2797264B1/en
Publication of WO2013091576A1 publication Critical patent/WO2013091576A1/zh

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    • 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

Definitions

  • the invention relates to a ring network protection technology, in particular to a ring network protection implementation method and system. Background technique
  • the ring network is a common networking mode.
  • ring network protection is one of the important protection methods.
  • the ring network protection is divided into two implementation modes.
  • the first implementation manner is: switching at a fault point; specifically, the ring-in node transmits a service packet according to the working path, and wraps back to the protection path at the adjacent node of the fault; After the service packet is bypassed, it is transmitted along the ring protection path until it is passed to another adjacent node of the fault, and then looped back to the working path.
  • the second implementation manner is as follows: Switch to the protection path to pass.
  • the first implementation mode is fast, but the path of the service packet is long and the bandwidth is occupied.
  • the second implementation mode is slow, but the path of packet transmission is short and the bandwidth is small.
  • each working path needs to be configured with a full-ring protection path, and the configuration workload is large, and when the fault occurs, the protection group needs to be switched one by one. , Switching time is long.
  • the main purpose of the present invention is to provide a method and system for implementing ring network protection, which can reduce the length of the service transmission path while realizing fast protection of services.
  • the present invention provides a method for implementing ring network protection, the method comprising: Establishing a shared working channel and a protection channel for each destination node that forms the ring network. When the service is in the process of running, and the loop in which the shared working channel is located fails, the service packet currently being transmitted is at the fault location. Sharing the working channel to the shared protection channel for transmission;
  • the ingress node performing the service switches the subsequent service packet of the service to the shared protection channel for transmission.
  • the establishing a shared working channel and a protection channel are:
  • each shared channel in the forward and reverse directions is established;
  • the service message currently being transmitted is transmitted from the shared working channel to the shared protection channel at a fault, and is:
  • the two nodes that generate the fault receive the node of the service packet currently being transmitted, and switch the service packet currently being transmitted to the shared protection channel for transmission.
  • the method when the service packet currently being transmitted is switched to the shared protection channel for transmission, the method further includes:
  • Another of the two nodes that generated the failure switches the traffic carried by the shared protection channel to the shared working channel.
  • the method further includes: After the fault is recovered, the recovery switch is performed at the fault; then the loop-in node performs a resume switch.
  • the node that receives the service packet from the two nodes that generate the fault directly transmits the service packet currently being transmitted on the shared working channel.
  • the method when the service packet currently being transmitted is directly transmitted on the shared working channel, the method further includes:
  • the other of the two nodes that generated the failure cancels the traffic carried on the shared protection channel before the failure to the shared working channel.
  • the present invention also provides an implementation system for ring network protection, the system comprising: a configuration unit, a fault node, and an ingress ring node;
  • a configuration unit configured to establish a shared working channel and a protection channel for each destination node that constitutes the ring network
  • the faulty node is configured to: when the service is in the process of running, and the loop in which the shared working channel is located is faulty, the service packet currently being transmitted is transmitted from the shared working channel to the shared protection channel at the fault location for transmission. ;
  • the ringing node is configured to switch the subsequent service packet of the service to the shared protection channel for transmission.
  • the faulty node further includes: a first node, configured to switch the currently transmitted service packet to the shared protection channel for transmission.
  • the faulty node further includes: a second node, configured to switch the service carried on the shared protection channel to the shared working channel.
  • the faulty node is further used to resume switching after the fault is recovered;
  • the ingress node is also used to perform recovery switching.
  • the first node when the recovery is performed at the fault, is further configured to directly transmit the service packet currently being transmitted on the shared working channel.
  • the second node is further configured to cancel the service carried on the shared protection channel before the fault to the shared working channel.
  • the method and system for implementing the ring network protection of the present invention establish a shared working channel and a protection channel for each destination node that constitutes the ring network; when the service is in progress, and the loop in which the shared working channel is located fails, the current
  • the transmitted service packet is transmitted from the shared working channel to the shared protection channel at the fault location, so that the service can be quickly protected; and the loop-in node performing the service performs the subsequent service of the service.
  • the packet is switched to the shared protection channel for transmission, so that the length of the service delivery path can be reduced, thereby reducing the occupied bandwidth and speeding up the transmission speed of the service.
  • the recovery switch is performed at the fault; after the entry point is resumed, the service is directly carried on the working channel, so that the service transmission speed can be further accelerated.
  • FIG. 1 is a schematic flowchart of a method for implementing ring network protection according to the present invention
  • FIG. 2 is a schematic flowchart of a method for implementing ring network protection in an embodiment
  • FIG. 3 is a schematic diagram of a shared channel established according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a fault that occurs in an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an implementation system of a ring network protection according to the present invention. detailed description
  • Step 100 Establish a shared working channel and a protection channel for each destination node that forms a ring network;
  • the destination node may be different for different services, and in the actual application process, the corresponding destination node may be determined according to the carried service.
  • the establishing a shared working channel and a protection channel are specifically:
  • the shared channel is a protection channel
  • each shared channel in the forward and reverse directions is established;
  • the direction in which the physical nodes constituting the ring network are connected in the clockwise direction may be defined as the forward direction
  • the direction in which the physical nodes constituting the ring network are connected in the counterclockwise direction may be defined as the reverse direction, or may be reversed.
  • Direction definition in other words, the forward and reverse directions can be defined as needed. It is only necessary to define the direction in which the physical nodes constituting the ring network are connected in one direction as the forward direction, and the direction in the opposite direction is defined as the reverse direction. Yes;
  • the working channel can only be used as a working channel, and cannot be used as a protection channel, correspondingly, protection
  • the channel can only be used as a protection channel, not as a work Channel;
  • one of the two establishment methods of establishing a shared working channel and a protection channel may be selected as needed.
  • the two methods of establishing a shared working channel and a protection channel are applicable to the descriptions of steps 101 to 102.
  • two ways of establishing a shared working channel and a protection channel are performed when a fault occurs. The process is the same.
  • Step 101 When a service is in progress, and the loop in which the shared working channel is located is faulty, the service packet currently being transmitted is transmitted from the shared working channel to the shared protection channel at the fault location, and then transmitted. Go to step 102;
  • the service message currently being transmitted is transmitted from the shared working channel to the shared protection channel at a fault, and is specifically:
  • the method may further include: another one of the two nodes that generate the fault, switching the service carried on the shared protection channel to the Sharing on the working channel;
  • the two nodes that generate the fault can use the prior art to know that a fault has occurred.
  • the other node that generates the fault switches the service carried on the shared protection channel to the shared working channel.
  • the purpose of the destination node is that only the received node is considered to be received.
  • the service packet sent by the first receiving node of the shared working channel is formed, it is considered to be the service packet sent to itself, that is, after the loop is faulty, after receiving the service packet of the other receiving node, It will not be considered as a service message sent to itself, and will then forward the received service to the first receiving node that constitutes the shared working channel, and finally to the other of the two nodes that generated the failure.
  • a node in which case another one of the two nodes that generated the fault needs to switch the service carried on the shared protection channel to the shared working channel to ensure received service packets. Can be finally transmitted to the destination node.
  • the specific process of switching can be done using existing technology.
  • Step 102 The ingress node that performs the service switches the subsequent service packet of the service to the shared protection channel for transmission.
  • the ingress node performing the service learns the shared working channel. A fault occurs, so that the service switching can be performed locally, and the transmission path of the subsequent service of the service is shortened, thereby reducing the bandwidth occupation.
  • the method may further comprise:
  • the recovery switch is performed at the fault; then the loop-in node performs a recovery switch;
  • the recovery switch is performed at the fault location, specifically:
  • the method may further include: the other one of the two nodes that generate the fault cancels the service carried on the shared protection channel before the fault to the shared working channel.
  • the switchover is performed on the fault, that is, the node that receives the service packet from the two nodes that generate the fault, and directly carries the service packet currently being transmitted in the shared work. And transmitting, on the channel, the other node that generates the fault cancels the service carried on the shared protection channel before the fault, and carries the service carried before the fault in the shared work. On the channel.
  • the two nodes that generated the fault can learn from the prior art that the fault has been recovered.
  • the ringing node performs the recovery switching, the subsequent packets of the service are carried on the shared working channel.
  • the present invention will be further described in detail below with reference to the embodiments.
  • the application scenario of this embodiment is as follows: the node A, the node B, the node C, the node D, the node E, and the node F form a ring network, and the service 1 is connected to the node A, that is, the node A is the ringing node of the service 1, The corresponding destination node is node D.
  • the implementation method of the ring network protection in this embodiment, as shown in FIG. 2, includes the following steps:
  • Step 200 Establish a shared working channel and a protection channel for each destination node that constitutes the ring network.
  • a shared channel in the forward and reverse directions is established, and the two shared channels are working channels and protection channels, as shown in FIG. 3, two shared channels are established, and one of them is a solid line.
  • Step 201 When the loop is faultless, select one shared channel as the working channel, and the other shared channel as the protection channel, and use the selected working channel to carry the service 1;
  • the shared channel formed by the solid line is selected as the working channel, that is, the transmission path of the service 1 is: A-F-E-D.
  • Step 202 When a service is in progress, and the loop in which the shared working channel is located is faulty, the service packet currently being transmitted is transmitted from the shared working channel to the shared protection channel at the fault location for transmission;
  • the node F switches the received service packet that is currently being transmitted to the shared protection channel for transmission, that is, switches to the channel formed by the dotted line, and at this time, the service path of the service of the service 1 It is: AF-ABCD; At the same time, the node E switches the service carried on the shared protection channel to the shared working channel.
  • Step 203 The ringing node performing the service 1 switches the subsequent service packet of the service 1 to the shared protection channel for transmission, and then performs step 204; In other words, the subsequent service of the service 1 is carried on the channel formed by the dotted line. At this time, the service path of the service packet of the service 1 is: ABCD.
  • Step 204 After the fault is recovered, perform a recovery switch at the fault, and then perform the step.
  • the fault recovery refers to: fault recovery between the node F and the node E.
  • the node F switches the received service packet currently being transmitted to the shared working channel for transmission, that is, switching.
  • the delivery path of the service packet of the service 1 is still: ABCD; at the same time, the node E cancels the service carried on the shared protection channel before the failure to the shared working channel. on.
  • Step 205 The ingress ring node performs a recovery switch.
  • the node A re-bears the service 1 to the shared channel carried by the fault, that is, on the channel consisting of the solid line.
  • the transmission path of the service 1 is: A-F-E-D.
  • the present invention further provides a ring network protection implementation system.
  • the system includes: a configuration unit 51, a fault node 52, and an S ⁇ ring node 53; wherein, the configuration unit 51, Used to establish a shared working channel and a protection channel for each destination node that constitutes the ring network;
  • the faulty node 52 is configured to: when the service is in the process of running, and the loop in which the shared working channel is faulty, the service packet currently being transmitted is bypassed from the shared working channel to the shared protection channel at the fault location.
  • the ringing node 53 is configured to switch the subsequent service packet of the service to the shared protection channel for transmission.
  • the faulty node 52 may further include: a first node, configured to switch the service packet currently being transmitted to the shared protection channel for transmission.
  • the faulty node 52 may further include: a second node, configured to switch the service carried on the shared protection channel to the shared working channel.
  • the first node is a node that receives the service message currently being transmitted from the two nodes that generate the fault
  • the second node is another one of the two nodes that generate the fault. node.
  • the faulty node 52 is further configured to perform a resume switchover at the fault after the fault is recovered; and the loopback node 53 is further configured to perform a resume switchover.
  • the first node is further configured to directly transmit the service packet currently being transmitted on the shared working channel.
  • the second node is further configured to cancel the switching of the service on the shared protection channel before the fault to the working protection channel.

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Abstract

本发明公开了一种环网保护的实现方法,该方法包括:针对组成环网的每个目的节点,建立共享工作通道和保护通道;在业务进行过程中,且共享工作通道所在的环路出现故障时,将当前正在传输的业务报文在故障处从所述共享工作通道绕到所述共享保护通道上进行传输;进行所述业务的入环节点将所述业务的后续业务报文切换至所述共享保护通道上进行传输。本发明同时公开了一种环网保护的实现系统,采用本发明的方法及系统,能在实现业务快速被保护的同时,减少业务传递路径的长度。

Description

一种环网保护的实现方法及系统 技术领域
本发明涉及环网保护技术, 特别是指一种环网保护的实现方法及系统。 背景技术
实际组建分组传送网络时, 环网是常见的组网方式, 相应的, 在分组 传送网络中, 环网保护是重要的保护方式之一。 一般, 环网保护分为两种 实现方式, 第一种实现方式为: 在故障点进行切换; 具体地, 入环节点按 照工作路径传递业务报文, 在故障相邻节点绕回到保护路径; 业务报文绕 回后沿着环形保护路径传递, 直至传递到故障的另一相邻节点后, 再次绕 回到工作路径; 第二种实现方式为: 在入环节点进行切换, 业务报文直接 切换到保护路径传递。 其中, 第一种实现方式切换快, 但业务报文传递的 路径长, 占用带宽多; 第二种实现方式切换慢, 但报文传递的路径短, 占 用带宽少。
综上所述, 传统的环网保护的实现方式均存在一定缺陷。
另外, 为了区分每一个分组业务, 在传统的环网保护的实现方式中, 每个工作路径都需要配置一个全环的保护路径, 配置工作量大, 并且当故 障出现时, 需要逐个切换保护组, 切换时间长。 发明内容
有鉴于此, 本发明的主要目的在于提供一种环网保护的实现方法及系 统, 能在实现业务快速被保护的同时, 减少业务传递路径的长度。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供了一种环网保护的实现方法, 该方法包括: 针对组成环网的每个目的节点, 建立共享工作通道和保护通道; 在业务进行过程中, 且共享工作通道所在的环路出现故障时, 将当前 正在传输的业务报文在故障处从所述共享工作通道绕到所述共享保护通道 上进行传输;
进行所述业务的入环节点将所述业务的后续业务报文切换至所述共享 保护通道上进行传输。
上述方案中, 所述建立共享工作通道和保护通道, 为:
建立顺、 逆方向各一条共享通道, 且两条共享通道互为工作通道和保 护通道; 或者, 建立顺、 逆方向各两条共享通道, 选择其中的两条共享通 道为工作通道, 另外两条共享通道为保护通道。
上述方案中, 所述建立顺、 逆方向各一条共享通道, 为:
以目的节点相邻的两个节点为起点, 依据最长路径原则, 建立顺、 逆 方向各一条共享通道;
相应的, 所述建立顺、 逆方向各两条共享通道, 为:
以目的节点相邻的两个节点为起点, 依据最长路径原则, 建立顺、 逆 方向各两条共享通道。
上述方案中, 所述将当前正在传输的业务报文在故障处从所述共享工 作通道绕到所述共享保护通道上进行传输, 为:
产生所述故障的两个节点中收到所述当前正在传输的业务报文的节 点, 将所述当前正在传输的业务报文切换至所述共享保护通道上进行传输。
上述方案中, 将所述当前正在传输的业务报文切换至所述共享保护通 道上进行传输时, 该方法进一步包括:
产生所述故障的两个节点中的另一节点将所述共享保护通道上 载的 业务切换至所述共享工作通道上。
上述方案中, 该方法进一步包括: 所述故障恢复后, 在故障处进行恢复切换; 之后所述入环节点进行恢 复切换。
上述方案中, 所述在故障处进行恢复切换, 为:
产生所述故障的两个节点中收到所述业务报文的节点, 将当前正在传 输的业务报文直接在所述共享工作通道上进行传输。
上述方案中, 将当前正在传输的业务报文直接在所述共享工作通道上 进行传输时, 该方法进一步包括:
产生所述故障的两个节点中的另一节点将故障前所述共享保护通道上 承载的业务取消切换至所述共享工作通道上。
本发明还提供了一种环网保护的实现系统, 该系统包括: 配置单元、 故障节点、 以及入环节点; 其中,
配置单元, 用于针对组成环网的每个目的节点, 建立共享工作通道和 保护通道;
故障节点, 用于在业务进行过程中, 且共享工作通道所在的环路出现 故障时, 将当前正在传输的业务报文在故障处从所述共享工作通道绕到所 述共享保护通道上进行传输;
入环节点, 用于将所述业务的后续业务报文切换至所述共享保护通道 上进行传输。
上述方案中, 所述故障节点进一步包括: 第一节点, 用于将所述当前 正在传输的业务报文切换至所述共享保护通道上进行传输。
上述方案中, 所述故障节点进一步包括: 第二节点, 用于将所述共享 保护通道上承载的业务切换至所述共享工作通道上。
上述方案中, 所述故障节点, 还用于所述故障恢复后, 在故障处进行 恢复切换;
所述入环节点, 还用于进行恢复切换。 上述方案中, 在故障处进行恢复切换时, 所述第一节点, 还用于将当 前正在传输的业务报文直接在所述共享工作通道上进行传输。
上述方案中, 所述第二节点, 还用于将故障前所述共享保护通道上承 载的业务取消切换至所述共享工作通道上。
本发明环网保护的实现方法及系统, 针对组成环网的每个目的节点, 建立共享工作通道和保护通道; 在业务进行过程中, 且共享工作通道所在 的环路出现故障时, 将当前正在传输的业务报文在故障处从所述共享工作 通道绕到所述共享保护通道上进行传输, 如此, 能实现业务的快速被保护; 进行所述业务的入环节点将所述业务的后续业务报文切换至所述共享保护 通道上进行传输, 如此, 能减少业务传递路径的长度, 从而减少了占用的 带宽, 加快了业务的传输速度。
另外, 当所述故障恢复后, 在故障处进行恢复切换; 之后所述入环节 点进行恢复切换, 所述业务直接承载在工作通道上, 如此, 能进一步加快 业务的传输速度。
除此以外, 针对组成环网的每个目的节点, 建立共享工作通道和保护 通道, 如此, 能减少配置的工作量, 易于操作。 附图说明
图 1为本发明环网保护的实现方法流程示意图;
图 2为实施例环网保护的实现方法流程示意图;
图 3为本发明实施例建立的共享通道示意图;
图 4为本发明实施例出现的故障示意图;
图 5为本发明环网保护的实现系统结构示意图。 具体实施方式
下面结合附图及具体实施例对本发明再作进一步详细的说明。 本发明环网保护的实现方法, 如图 1所示, 包括以下步驟: 步驟 100: 针对组成环网的每个目的节点,建立共享工作通道和保护通 道;
这里, 针对不同的业务, 所述目的节点可能有所不同, 在实际应用过 程中, 可根据承载的业务确定对应的所述目的节点。
所述建立共享工作通道和保护通道, 具体为:
建立顺、 逆方向各一条共享通道, 且两条共享通道互为工作通道和保 护通道; 或者, 建立顺、 逆方向各两条共享通道, 选择其中的两条共享通 道为工作通道, 另外两条共享通道为保护通道;
其中, 所述建立顺、 逆方向各一奈共享通道, 具体为:
以目的节点相邻的两个节点为起点, 依据最长路径原则, 建立顺、 逆 方向各一条共享通道;
相应的, 所述建立顺、 逆方向各两条共享通道, 具体为:
以目的节点相邻的两个节点为起点, 依据最长路径原则, 建立顺、 逆 方向各两条共享通道。
在实际应用时, 可以将组成环网的各个物理节点沿顺时针方向连接的 方向定义为顺方向, 将组成环网的各个物理节点沿逆时针方向连接的方向 定义为逆方向, 也可以沿反方向定义, 换句话说, 顺、 逆方向可以 4艮据需 要进行定义, 只需要将组成环网的各个物理节点沿一个方向连接的方向定 义为顺方向, 沿相反方向连接的方向定义为逆方向即可;
建立共享通道的具体处理过程可釆用现有技术;
在选择工作通道和保护通道时, 可以根据需要任意选择。
当建立顺、 逆方向各两条共享通道, 选择其中的两条共享通道为工作 通道, 另外两条共享通道为保护通道时, 工作通道只能作为工作通道, 不 能作为保护通道, 相应的, 保护通道则只能作为保护通道, 不能作为工作 通道; 在实际应用时, 可以根据需要选择上述建立共享工作通道和保护通 道的两种建立方式中的一种。
这里, 需要说明的是: 两种建立共享工作通道和保护通道的方式均适 用步驟 101~102 的描述, 换句话说, 两种建立共享工作通道和保护通道的 方式在出现故障时, 进行业务切换的处理过程相同。
步驟 101 :在业务进行过程中,且共享工作通道所在的环路出现故障时, 将当前正在传输的业务报文在故障处从所述共享工作通道绕到所述共享保 护通道上进行传输, 之后执行步驟 102;
这里, 所述将当前正在传输的业务报文在故障处从所述共享工作通道 绕到所述共享保护通道上进行传输, 具体为:
产生所述故障的两个节点中收到所述当前正在传输的业务报文的节 点, 将所述当前正在传输的业务报文切换至所述共享保护通道上进行传输; 将所述当前正在传输的业务报文切换至所述共享保护通道上进行传输 时, 该方法还可以进一步包括: 产生所述故障的两个节点中的另一节点将 所述共享保护通道上承载的业务切换至所述共享工作通道上;
其中, 产生所述故障的两个节点可利用现有技术获知出现了故障。 所述产生所述故障的两个节点中的另一节点将所述共享保护通道上承 载的业务切换至所述共享工作通道上的目的为: 在实际应用时, 目的节点 会出现只认为收到组成共享工作通道的倒数第一个接收节点发送的业务报 文后, 才认为是发送给自身的业务报文的情况, 即: 环路出现故障时, 收 到其它接收节点的业务报文后, 会认为不是发送给自身的业务报文, 进而 会将收到的业务 ·ί艮文转发给组成共享工作通道的倒数第一个接收节点 , 最 终传到产生所述故障的两个节点中的另一节点, 在这种情况下, 产生所述 故障的两个节点中的另一节点需要将所述共享保护通道上承载的业务切换 至所述共享工作通道上, 以保证收到的业务报文能最终传送给目的节点。 切换的具体处理过程可采用现有技术。
步驟 102:进行所述业务的入环节点将所述业务的后续业务报文切换至 所述共享保护通道上进行传输。
这里, 所述将当前正在传输的业务报文在故障处从所述共享工作通道 绕到所述共享保护通道上进行传输的过程中, 进行所述业务的入环节点会 获知所述共享工作通道发生故障, 从而可以快速地在本地进行业务切换, 缩短所述业务的后续业务 4艮文的传递路径, 进而减少带宽的占用。
该方法还可以进一步包括:
所述故障恢复后, 在故障处进行恢复切换; 之后所述入环节点进行恢 复切换;
其中, 所述在故障处进行恢复切换, 具体为:
产生所述故障的两个节点中收到所述业务报文的节点, 将当前正在传 输的业务报文直接在所述共享工作通道上进行传输;
相应的, 该方法还可以进一步包括: 产生所述故障的两个节点中的另 一节点将故障前所述共享保护通道上承载的业务取消切换至所述共享工作 通道上。
其中, 故障恢复后, 需要取消故障时进行的切换, 即: 产生所述故障 的两个节点中收到所述业务报文的节点, 将当前正在传输的业务报文直接 承载在所述共享工作通道上进行传输, 相应的, 产生所述故障的两个节点 中的另一节点将故障前所述共享保护通道上所承载的业务取消切换, 将故 障前所承载的业务承载在所述共享工作通道上。
这里, 产生所述故障的两个节点可利用现有技术获知故障已恢复。 所述入环节点进行恢复切换后, 所述业务的后续报文就承载在了所述 共享工作通道上。
下面结合实施例对本发明再作进一步详细的描述。 本实施例的应用场景为: 节点 A、 节点 B、 节点 C、 节点 D、 节点 E、 以及节点 F组成环网, 业务 1从节点 A上环, 即: 节点 A为业务 1的入环 节点, 对应的目的节点为节点 D。 本实施例环网保护的实现方法, 如图 2 所示, 包括以下步骤:
步骤 200: 针对组成环网的每个目的节点,建立共享工作通道和保护通 道;
具体地, 针对节点 D, 建立顺、 逆方向各一条共享通道, 且两条共享 通道互为工作通道和保护通道, 如图 3 所示, 建立的两条共享通道, 一条 为实线所组成的通道, 即: C-B-A-F-E-D, 一条为虛线所组成的通道, 即: E- F- A B C- D。
步骤 201 : 环路无故障时, 选择一条共享通道为工作通道, 另一条共享 通道为保护通道, 并采用选定的工作通道承载业务 1 ;
这里, 在本实施例中, 选择实线所组成的共享通道作为工作通道, 即: 业务 1的传递路径为: A-F-E-D。
步骤 202:在业务进行过程中,且共享工作通道所在的环路出现故障时, 将当前正在传输的业务报文在故障处从所述共享工作通道绕到所述共享保 护通道上进行传输;
这里, 如图 4所示, 假设节点 F与节点 E之间出现故障, 本步 的具 体实现为:
节点 F将收到的所述当前正在传输的业务报文切换至所述共享保护通 道上进行传输, 即: 切换到虚线所组成的通道上, 此时, 业务 1 的业务 4艮 文的传递路径为: A-F- A-B-C-D; 同时, 节点 E将所述共享保护通道上承载 的业务切换至所述共享工作通道上。
步骤 203 :进行业务 1的入环节点将业务 1的后续业务报文切换至所述 共享保护通道上进行传输, 之后执行步骤 204; 换句话说, 业务 1的后续业务 4艮文承载在虛线所组成的通道上, 此时, 业务 1的业务报文的传递路径为: A-B-C-D。
步驟 204: 当所述故障恢复后, 在故障处进行恢复切换, 之后执行步骤
205;
这里, 所述故障恢复就是指: 节点 F与节点 E之间的故障恢复, 此时, 节点 F将收到的当前正在传输的业务报文切换至所述共享工作通道上进行 传输, 即: 切换到实线所组成的通道上, 此时, 业务 1 的业务报文的传递 路径仍为: A-B-C-D; 同时, 节点 E将故障前所述共享保护通道上承载的业 务取消切换至所述共享工作通道上。
步骤 205: 所述入环节点进行恢复切换。
也就是说, 节点 A将业务 1重新承载到故障前承载的共享通道上, 即: 由实线组成的通道上, 此时, 业务 1的传递路径为: A-F-E-D。
为实现上述方法, 本发明还提供了一种环网保护的实现系统, 如图 5 所示, 该系统包括: 配置单元 51、 故障节点 52、 以 S^ 环节点 53 ; 其中, 配置单元 51 , 用于针对组成环网的每个目的节点, 建立共享工作通道 和保护通道;
故障节点 52, 用于在业务进行过程中, 且共享工作通道所在的环路出 现故障时, 将当前正在传输的业务报文在故障处从所述共享工作通道绕到 所述共享保护通道上进行传输;
入环节点 53 , 用于将所述业务的后续业务报文切换至所述共享保护通 道上进行传输。
其中, 所述故障节点 52还可以进一步包括: 第一节点, 用于将所述当 前正在传输的业务报文切换至所述共享保护通道上进行传输。
所述故障节点 52还可以进一步包括: 第二节点, 用于将所述共享保护 通道上承载的业务切换至所述共享工作通道上。 这里, 需要说明的是: 第一节点为产生所述故障的两个节点中收到所 述当前正在传输的业务报文的节点, 第二节点为产生所述故障的两个节点 中的另一节点。
所述故障节点 52, 还用于所述故障恢复后, 在故障处进行恢复切换; 所述入环节点 53, 还用于进行恢复切换。
在故障处进行恢复切换时, 所述第一节点, 还用于将当前正在传输的 业务报文直接在所述共享工作通道上进行传输。
相应的, 所述第二节点, 还用于将故障前所述共享保护通道上 7?载的 业务取消切换至所述工作保护通道上。
这里, 本发明所述系统中的配置单元的具体处理过程已在上文中详述, 不再赘述。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种环网保护的实现方法, 其特征在于, 该方法包括:
针对组成环网的每个目的节点, 建立共享工作通道和保护通道; 在业务进行过程中, 且共享工作通道所在的环路出现故障时, 将当前 正在传输的业务报文在故障处从所述共享工作通道绕到所述共享保护通道 上进行传输;
进行所述业务的入环节点将所述业务的后续业务报文切换至所述共享 保护通道上进行传输。
2、 根据权利要求 1所述的方法, 其特征在于, 所述建立共享工作通道 和保护通道, 为:
建立顺、 逆方向各一条共享通道, 且两条共享通道互为工作通道和保 护通道; 或者, 建立顺、 逆方向各两条共享通道, 选择其中的两条共享通 道为工作通道, 另外两条共享通道为保护通道。
3、 根据权利要求 2所述的方法, 其特征在于, 所述建立顺、 逆方向各 一条共享通道, 为:
以目的节点相邻的两个节点为起点, 依据最长路径原则, 建立顺、 逆 方向各一条共享通道;
相应的, 所述建立顺、 逆方向各两条共享通道, 为:
以目的节点相邻的两个节点为起点, 依据最长路径原则, 建立顺、 逆 方向各两条共享通道。
4、 根据权利要求 1、 2或 3所述的方法, 其特征在于, 所述将当前正 在传输的业务报文在故障处从所述共享工作通道绕到所述共享保护通道上 进行传输, 为:
产生所述故障的两个节点中收到所述当前正在传输的业务报文的节 点, 将所述当前正在传输的业务报文切换至所述共享保护通道上进行传输。
5、 根据权利要求 4所述的方法, 其特征在于, 将所述当前正在传输的 业务报文切换至所述共享保护通道上进行传输时, 该方法进一步包括: 产生所述故障的两个节点中的另一节点将所述共享保护通道上 载的 业务切换至所述共享工作通道上。
6、 根据权利要求 1、 2或 3所述的方法, 其特征在于, 该方法进一步 包括:
所述故障恢复后, 在故障处进行恢复切换; 之后所述入环节点进行恢 复切换。
7、 根据权利要求 6所述的方法, 其特征在于, 所述在故障处进行恢复 切换, 为:
产生所述故障的两个节点中收到所述业务报文的节点, 将当前正在传 输的业务报文直接在所述共享工作通道上进行传输。
8、 根据权利要求 7所述的方法, 其特征在于, 将当前正在传输的业务 报文直接在所述共享工作通道上进行传输时, 该方法进一步包括:
产生所述故障的两个节点中的另一节点将故障前所述共享保护通道上 承载的业务取消切换至所述共享工作通道上。
9、 一种环网保护的实现系统, 其特征在于, 该系统包括: 配置单元、 故障节点、 以及入环节点; 其中,
配置单元, 用于针对组成环网的每个目的节点, 建立共享工作通道和 保护通道;
故障节点, 用于在业务进行过程中, 且共享工作通道所在的环路出现 故障时, 将当前正在传输的业务报文在故障处从所述共享工作通道绕到所 述共享保护通道上进行传输;
入环节点, 用于将所述业务的后续业务报文切换至所述共享保护通道 上进行传输。
10、 根据权利要求 9所述的系统, 其特征在于, 所述故障节点进一步 包括: 笫一节点, 用于将所述当前正在传输的业务报文切换至所述共享保 护通道上进行传输。
11、 根据权利要求 10所述的系统, 其特征在于, 所述故障节点进一步 包括: 第二节点, 用于将所述共享保护通道上承载的业务切换至所述共享 工作通道上。
12、 根据权利要求 9、 10或 11所述的系统, 其特征在于, 所述故障节 点, 还用于所述故障恢复后, 在故障处进行恢复切换;
所述入环节点, 还用于进行恢复切换。
13、 根据权利要求 12所述的系统, 其特征在于, 在故障处进行恢复切 换时, 所述第一节点, 还用于将当前正在传输的业务报文直接在所述共享 工作通道上进行传输。
14、 根据权利要求 13所述的系统, 其特征在于, 所述第二节点, 还用 于将故障前所述共享保护通道上承载的业务取消切换至所述共享工作通道 上。
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