WO2014085982A1 - Processing method for controlling protection switching range on optical transport network and protection apparatus - Google Patents
Processing method for controlling protection switching range on optical transport network and protection apparatus Download PDFInfo
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Abstract
Embodiments of the present invention provide a processing method for controlling a protection switching range on an optical transport network and a protection apparatus. Under different hold off time set by a protection control unit for two detection units respectively according to different upstream service status indications, the two detection units report respective status information to the protection control unit according to a preset rule. According to the status information, the protection control unit controls switching between a working channel and a protection channel, reducing a probability of performing unnecessary switching.
Description
光传送网络中控制保护倒换范围的处理方法和保护装置 技术领域 本发明实施例涉及光通信技术， 尤其涉及一种光传送网络中控制保护倒 换范围的处理方法和保护装置。 背景技术 The present invention relates to an optical communication technology, and in particular, to a processing method and a protection device for controlling a protection switching range in an optical transmission network. Background technique
随着光传送网络 ( Optical Transport Network, 以下简称： OTN )技术的 应用越来越广泛， 对釆用 OTN技术所传送业务数据的保护变得日益重要。 With the increasing use of Optical Transport Network (OTN) technology, the protection of service data transmitted by OTN technology has become increasingly important.
由于运营商组网的复杂性， 级联保护的应用场景越来越多， 在级联保护 场景下， 如果上游业务发生故障， 保护倒换应该只在上游发生作用， 下游的 保护域不应该发生倒换，以使 OTN设备能最大限度地减少因倒换而消耗的业 务传送时间。 Due to the complexity of the carrier network, the application scenarios of the cascading protection are more and more. In the cascading protection scenario, if the upstream service fails, the protection switching should only take effect in the upstream, and the downstream protection domain should not be switched. In order to enable OTN equipment to minimize the service delivery time consumed by switching.
现有技术中， 釆用对保护域设置倒换拖延时间的方法来控制级联场景下 保护倒换的范围，图 1为常见的一种 OTN保护场景网络结构图，如图 1所示， 网元节点 B和网元节点 E之间的两条通道分别为保护域 1的工作通道和保护 通道， 其中， 网元节点 网元节点 、 网元节点 E之间的通道为工作通道， 网元节点 B、 网元节点 D、 网元节点 E之间的通道为保护通道， 网元节点 E 输出工作通道的业务数据。 网元节点 E上有两个检测单元， 分别用于检测工 作通道的信号状态和保护通道的信号状态， 当网元节点 A和网元节点 B之间 业务故障时，工作通道的检测单元和保护通道的检测单元都会拖延时间 T后， 向网元节点 E上的控制单元上 ^艮信号失效状态。 法精确控制拖延时间， 当拖延时间相同时， 可能会出现工作通道的检测单元 先上 ^艮信号失效状态， 而此时， 保护通道的检测单元拖延时间还未到期， 没 有上 ^艮信号失效状态。 当工作通道处于信号失效状态而保护通道处于信号正 常状态时， 网元节点 E上的控制单元会控制保护通道倒换为工作通道。 而当 网元节点 A和网元节点 B之间发生故障时， 下游的保护域 1和保护域 2不应 该发生倒换， 因此， 釆用现有技术的方法将经常产生不必要的倒换。
发明内容 本发明实施例提供一种光传送网络中控制保护倒换范围的处理方法和保 护装置， 以降低产生不必要倒换的几率。 In the prior art, the method for setting the switching delay time of the protection domain is used to control the range of protection switching in the cascading scenario. FIG. 1 is a common network structure diagram of the OTN protection scenario, as shown in FIG. The two channels between the B and the network element node E are the working channel and the protection channel of the protection domain 1, respectively, wherein the channel between the network element node and the network element node E is a working channel, and the network element node B, The channel between the network element node D and the network element node E is a protection channel, and the network element node E outputs the service data of the working channel. There are two detection units on the NE node E, which are used to detect the signal status of the working channel and the signal status of the protection channel. When the service between the network element node A and the network element node B is faulty, the detection unit and protection of the working channel The detection unit of the channel will delay the time T, and then the signal failure state is sent to the control unit on the network element node E. The method accurately controls the delay time. When the delay time is the same, the detection unit of the working channel may first go up and the signal failure state. At this time, the delay time of the detection unit of the protection channel has not expired, and no signal is invalid. status. When the working channel is in the signal failure state and the protection channel is in the signal normal state, the control unit on the network element node E controls the protection channel to be switched into the working channel. When a fault occurs between the network element node A and the network element node B, the downstream protection domain 1 and the protection domain 2 should not be switched. Therefore, the prior art method often generates unnecessary switching. SUMMARY OF THE INVENTION Embodiments of the present invention provide a processing method and a protection device for controlling a protection switching range in an optical transmission network, so as to reduce the probability of generating unnecessary switching.
第一方面，本发明实施例提供一种光传送网络中控制保护倒换范围的处 理方法， 包括： In a first aspect, an embodiment of the present invention provides a method for controlling a protection switching range in an optical transport network, including:
保护装置的工作通道检测单元和保护通道检测单元分别经由工作通 道中继网络和保护通道中继网络接收上游业务状态指示， 并根据所述上游 业务状态指示， 按照预设规则向保护控制单元上报各自的状态信息， 以供 所述保护控制单元根据所述状态信息控制保护执行单元进行工作通道和 保护通道的倒换； 所述预设规则包括所述保护控制单元根据不同的上游业 务状态指示， 为所述工作通道检测单元和所述保护通道检测单元分别设置 的、 不同的拖延时间。 The working channel detecting unit and the protection channel detecting unit of the protection device respectively receive the upstream service status indication via the working channel relay network and the protection channel relay network, and report the respective to the protection control unit according to the preset rule according to the upstream service status indication. Status information, for the protection control unit to control the protection execution unit to perform switching of the working channel and the protection channel according to the status information; the preset rule includes the protection control unit according to different upstream service status indications Different delay times set by the working channel detecting unit and the protection channel detecting unit respectively.
结合第一方面， 所述上游业务状态指示包括上游客户侧业务故障指 示、 上游客户侧业务恢复指示、 上游 OTN业务故障指示和上游 OTN业务 恢复指示； 对应地， 所述预设规则具体包括： With reference to the first aspect, the indication of the upstream service status includes an indication of an upstream customer side service, an indication of an upstream customer service, an indication of an upstream OTN service, and an indication of an upstream OTN service recovery. Correspondingly, the preset rule specifically includes:
所述保护控制单元根据所述上游客户侧业务故障指示分别为所述工 作通道检测单元和所述保护通道检测单元设置用于上报失效状态的第一 拖延时间和第二拖延时间， 且所述第一拖延时间大于所述第二拖延时间； 所述保护控制单元根据所述上游客户侧业务恢复指示分别为所述工 作通道检测单元和所述保护通道检测单元设置用于上报正常状态的第三 拖延时间和第四拖延时间， 且所述第三拖延时间小于所述第四拖延时间； 所述保护控制单元根据所述上游 OTN业务故障指示为所述工作通道 检测单元设置用于上报失效状态的第五拖延时间； The protection control unit sets a first delay time and a second delay time for reporting the failure state, respectively, for the working channel detection unit and the protection channel detection unit according to the upstream client side service failure indication, and the a delay time is greater than the second delay time; the protection control unit sets a third delay for reporting the normal state for the working channel detecting unit and the protection channel detecting unit according to the upstream client side service recovery indication And a fourth delay time, wherein the third delay time is less than the fourth delay time; the protection control unit sets, for the working channel detection unit, a report for reporting a failure state according to the upstream OTN service failure indication Five delays;
所述保护控制单元根据所述上游 OTN业务恢复指示为所述保护通道 检测单元设置用于上 4艮正常状态的第六拖延时间。 The protection control unit sets a sixth stalling time for the upper channel normal state for the protection channel detecting unit according to the upstream OTN service recovery indication.
结合第一方面， 所述第五拖延时间为零。 In conjunction with the first aspect, the fifth stall time is zero.
结合第一方面， 所述第六拖延时间为零。 In conjunction with the first aspect, the sixth stall time is zero.
第二方面， 本发明实施例提供一种保护装置， 包括： In a second aspect, an embodiment of the present invention provides a protection device, including:
工作通道检测单元、 保护通道检测单元、 保护控制单元和保护执行单 元， 其中， 所述工作通道检测单元和所述保护通道检测单元分别与所述保
护控制单元和所述保护执行单元连接； a working channel detecting unit, a protection channel detecting unit, a protection control unit, and a protection executing unit, wherein the working channel detecting unit and the protection channel detecting unit respectively Connecting the protection control unit and the protection execution unit;
所述工作通道检测单元和所述保护通道检测单元分别用于经由工作 通道中继网络和保护通道中继网络接收上游业务状态指示， 并根据所述上 游业务状态指示， 按照预设规则向保护控制单元上报各自的状态信息； 所述保护控制单元用于设置所述预设规则， 并根据所述工作通道检测 单元和所述保护通道检测单元上报的状态信息控制保护执行单元进行工 作通道和保护通道的倒换； 所述预设规则包括所述保护控制单元根据不同 的上游业务状态指示， 为所述工作通道检测单元和所述保护通道检测单元 分别设置的、 不同的拖延时间； The working channel detecting unit and the protection channel detecting unit are respectively configured to receive an upstream service status indication via the working channel relay network and the protection channel relay network, and according to the upstream service status indication, according to a preset rule to the protection control The unit reports the respective status information; the protection control unit is configured to set the preset rule, and control the protection execution unit to perform the working channel and the protection channel according to the status information reported by the working channel detecting unit and the protection channel detecting unit. The preset rule includes different delay times set by the protection control unit for the working channel detecting unit and the protection channel detecting unit according to different upstream service state indications;
所述保护执行单元用于在所述保护控制单元的控制下进行工作通道 和保护通道的倒换。 The protection execution unit is configured to perform switching of the working channel and the protection channel under the control of the protection control unit.
结合第二方面， 所述上游业务状态指示包括上游客户侧业务故障指 示、 上游客户侧业务恢复指示、 上游 OTN业务故障指示和上游 OTN业务 恢复指示； 对应地， 所述预设规则具体包括： With reference to the second aspect, the upstream service status indication includes an upstream client side service fault indication, an upstream client side service recovery indication, an upstream OTN service fault indication, and an upstream OTN service recovery indication. Correspondingly, the preset rule specifically includes:
所述保护控制单元根据所述上游客户侧业务故障指示分别为所述工 作通道检测单元和所述保护通道检测单元设置用于上报失效状态的第一 拖延时间和第二拖延时间， 且所述第一拖延时间大于所述第二拖延时间； 所述保护控制单元根据所述上游客户侧业务恢复指示分别为所述工 作通道检测单元和所述保护通道检测单元设置用于上报正常状态的第三 拖延时间和第四拖延时间， 且所述第三拖延时间小于所述第四拖延时间； 所述保护控制单元根据所述上游 OTN业务故障指示为所述工作通道 检测单元设置用于上报失效状态的第五拖延时间； The protection control unit sets a first delay time and a second delay time for reporting the failure state, respectively, for the working channel detection unit and the protection channel detection unit according to the upstream client side service failure indication, and the a delay time is greater than the second delay time; the protection control unit sets a third delay for reporting the normal state for the working channel detecting unit and the protection channel detecting unit according to the upstream client side service recovery indication And a fourth delay time, wherein the third delay time is less than the fourth delay time; the protection control unit sets, for the working channel detection unit, a report for reporting a failure state according to the upstream OTN service failure indication Five delays;
所述保护控制单元根据所述上游 OTN业务恢复指示分别为所述保护 通道检测单元设置用于上 ^艮正常状态的第六拖延时间。 And the protection control unit sets a sixth stalling time for the upper channel normal state for the protection channel detecting unit according to the upstream OTN service recovery indication.
结合第二方面， 所述第五拖延时间为零。 In conjunction with the second aspect, the fifth stall time is zero.
结合第二方面， 所述第六拖延时间为零。 In conjunction with the second aspect, the sixth stall time is zero.
本发明实施例提供的光传送网络中控制保护倒换范围的处理方法和保 护装置， 通过下游网元节点中保护装置的工作通道检测单元和保护通道检 测单元分别经由工作通道中继网络和保护通道中继网络接收上游业务状 态指示， 并根据上游业务状态指示， 按照预设规则向保护控制单元上报各
自的状态信息， 以供保护控制单元根据状态信息控制保护执行单元进行工 作通道和保护通道的倒换； 预设规则包括保护控制单元根据不同的上游业 务状态指示， 为工作通道检测单元和保护通道检测单元分别设置的、 不同 的拖延时间。 实现了对光传送网络 OTN 中通道保护倒换的控制， 降低了 产生不必要倒换的几率。 附图说明 The processing method and the protection device for controlling the protection switching range in the optical transmission network provided by the embodiment of the present invention, the working channel detecting unit and the protection channel detecting unit of the protection device in the downstream network element node respectively pass through the working channel relay network and the protection channel After receiving the upstream service status indication, the network reports the status to the protection control unit according to the preset rule according to the upstream service status indication. Status information for the protection control unit to control the protection execution unit to perform switching of the working channel and the protection channel according to the status information; the preset rule includes the protection control unit detecting the working channel detection unit and the protection channel according to different upstream service status indications Different delay times set by the unit. The control of the channel protection switching in the optical transport network OTN is realized, which reduces the probability of generating unnecessary switching. DRAWINGS
实施例或现有技术描述中所需要使用的附图作一简单地介绍， 显而易见 地， 下面描述中的附图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， 还可以根据这些附图获得其他的附 图。 The drawings used in the embodiments or the description of the prior art are briefly described. It is obvious that the drawings in the following description are some embodiments of the present invention, and are not creative to those skilled in the art. Other drawings can also be obtained from these drawings on the premise of labor.
图 1为常见的一种 OTN保护场景网络结构图； FIG. 1 is a common network structure diagram of an OTN protection scenario;
图 2为本发明 OTN中控制保护倒换范围的处理方法实施例一的流程 示意图； 2 is a schematic flowchart of Embodiment 1 of a method for processing a protection switching range in an OTN according to the present invention;
图 3为图 1所示 OTN保护场景的内部装置结构示意图； 3 is a schematic structural diagram of an internal device of the OTN protection scenario shown in FIG. 1;
图 4为本发明 OTN中控制保护倒换范围的处理方法实施例二的流程 示意图； 4 is a schematic flowchart of Embodiment 2 of a method for processing a protection switching range in an OTN according to the present invention;
图 5为本发明 OTN中控制保护倒换范围的处理方法实施例三的流程 示意图； 5 is a schematic flowchart of Embodiment 3 of a method for processing a protection switching range in an OTN according to the present invention;
图 6为本发明保护装置实施例一的结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚， 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作出创造性劳动前提 下所获得的所有其他实施例， 都属于本发明保护的范围。 FIG. 6 is a schematic structural view of a first embodiment of a protection device according to the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
图 2为本发明 OTN中控制保护倒换范围的处理方法实施例一的流程 示意图， 如图 2所示， 本实施例的方法包括：
S201 : 保护装置的工作通道检测单元和保护通道检测单元分别经由工 作通道中继网络和保护通道中继网络接收上游业务状态指示。 2 is a schematic flowchart of Embodiment 1 of a method for processing a protection switching range in an OTN according to the present invention. As shown in FIG. 2, the method in this embodiment includes: S201: The working channel detecting unit and the protection channel detecting unit of the protection device respectively receive an upstream service status indication via the working channel relay network and the protection channel relay network.
具体地， 在 OTN中， 按照业务信号的传送方向， OTN中的信号由上 游网元节点传送到下游网元节点， 图 3为图 1所示 OTN保护场景的内部 装置结构示意图，图 3仅示出了图 1所示的网元节点 A至网元节点 E之间 的部分， 保护域 2的结构参见保护域 1的结构。 如图 3所示， 网元节点 A 的信号进入保护域 1的网元节点 B中的信号复制单元，信号复制单元将信 号复制为两份分别发送到网元节点 B 的工作通道检测单元和保护通道检 测单元。 工作通道检测单元与工作通道相连， 保护通道检测单元与保护通 道相连。保护域 1的网元节点 B的两个检测单元分别用于将接收到的客户 侧业务信号封装为适于在工作通道中继网络和保护通道中继网络传输的 信号格式， 即 OTN业务信号。 网元节点 B的两个检测单元当检测到接收 到的客户侧业务信号故障时， 将在 OTN业务信号的开销字节中设置业务 状态指示， 即客户侧业务故障指示信息。 工作通道的中继网络和保护通道 的中继网络分别包含一个或多个中继 OTN网元节点时， 当中继 OTN网元 节点的装置检测到 OTN业务信号故障时，将在接收到的 OTN业务的开销 字节中设置业务状态指示， 即 OTN业务故障指示信息。 当中继网络不包 含 OTN 网元节点时， 如果中继网络光纤故障， 下游的检测单元会检测到 信号丟失（Loss of Signal, 以下简称： LOS ) , LOS也是一种 OTN业务故 障指示信息。下游网元节点 E中保护装置的工作通道检测单元和保护通道 检测单元分别经由工作通道中继网络和保护通道中继网络接收上游业务 状态指示， 业务状态指示具体可以为上述的上游客户侧业务故障指示、 上 游客户侧业务恢复指示、上游 OTN业务故障指示和上游 OTN业务恢复指 示等。 Specifically, in the OTN, according to the transmission direction of the service signal, the signal in the OTN is transmitted from the upstream network element node to the downstream network element node, and FIG. 3 is a schematic diagram of the internal device structure of the OTN protection scenario shown in FIG. The part between the network element node A and the network element node E shown in FIG. 1 is shown. The structure of the protection domain 2 is as shown in the structure of the protection domain 1. As shown in FIG. 3, the signal of the network element node A enters the signal replication unit in the network element node B of the protection domain 1, and the signal replication unit copies the signal into two working channel detection units and protections respectively sent to the network element node B. Channel detection unit. The working channel detecting unit is connected to the working channel, and the protection channel detecting unit is connected to the protection channel. The two detecting units of the network element node B of the protection domain 1 are respectively used for encapsulating the received client side service signals into a signal format suitable for transmission in the working channel relay network and the protection channel relay network, that is, an OTN service signal. When detecting the failure of the received client side service signal, the two detecting units of the network element node B will set the service status indication, that is, the customer side service failure indication information, in the overhead byte of the OTN service signal. When the relay network of the working channel and the relay network of the protection channel respectively contain one or more relay OTN network element nodes, when the device that relays the OTN network element node detects the OTN service signal failure, the OTN service will be received. The service status indication, that is, the OTN service failure indication information, is set in the overhead byte. When the relay network does not include the OTN network element node, if the relay network fiber fails, the downstream detection unit detects the loss of the signal (Loss of Signal, hereinafter referred to as LOS), and LOS is also an OTN service failure indication information. The working channel detecting unit and the protection channel detecting unit of the protection device in the downstream network element node E respectively receive the upstream service status indication via the working channel relay network and the protection channel relay network, and the service status indication may specifically be the upstream customer side service fault. The indication, the upstream client side service recovery indication, the upstream OTN service failure indication, and the upstream OTN service recovery indication.
S202: 根据上游业务状态指示， 按照预设规则向保护控制单元上报各 自的状态信息， 以供保护控制单元根据状态信息控制保护执行单元进行工 作通道和保护通道的倒换。 S202: Report the status information to the protection control unit according to the preset service status, so that the protection control unit controls the protection execution unit to perform the switching between the working channel and the protection channel according to the status information.
下游网元节点中保护装置的工作通道检测单元和保护通道检测单元 分别经由工作通道中继网络和保护通道中继网络接收到上游业务状态指 示后， 根据上游业务状态指示， 按照预设规则向保护控制单元上报各自的
状态信息， 上述预设规则包括保护控制单元根据不同的上游业务状态指 示， 为工作通道检测单元和保护通道检测单元分别设置的、 不同的拖延时 间。 After the working channel detecting unit and the protection channel detecting unit of the protection device in the downstream network element node receive the upstream service status indication via the working channel relay network and the protection channel relay network respectively, according to the upstream service status indication, the protection is performed according to the preset rule. The control unit reports its respective Status information, the preset rule includes different delay times set by the protection control unit for the working channel detecting unit and the protection channel detecting unit according to different upstream service status indications.
对应地， 预设规则包括保护控制单元根据上游客户侧业务故障指示分 别为工作通道检测单元和保护通道检测单元设置用于上报失效状态的第 一拖延时间和第二拖延时间， 且第一拖延时间大于第二拖延时间； 保护控 制单元根据上游客户侧业务恢复指示分别为工作通道检测单元和保护通 道检测单元设置用于上 ^艮正常状态的第三拖延时间和第四拖延时间， 且第 三拖延时间小于第四拖延时间； 保护控制单元根据上游 OTN业务故障指 示为工作通道检测单元设置用于上报失效状态的第五拖延时间； 保护控制 单元根据上游 OTN业务恢复指示为保护通道检测单元设置用于上报正常 状态的第六拖延时间。 Correspondingly, the preset rule includes: the protection control unit sets a first delay time and a second delay time for reporting the failure state for the working channel detection unit and the protection channel detection unit according to the upstream client side service failure indication, and the first delay time, and the first delay time The second delay time and the fourth delay time are set for the working channel detecting unit and the protection channel detecting unit, respectively, according to the upstream client side service recovery instruction, and the third delay time and the fourth delay time are respectively used for the upper state and the third delay time. The time is less than the fourth delay time; the protection control unit sets a fifth delay time for reporting the failure state for the working channel detection unit according to the upstream OTN service failure indication; the protection control unit sets the protection channel detection unit for the protection channel detection unit according to the upstream OTN service recovery indication. The sixth delay time for reporting normal status.
下游网元节点中保护装置的工作通道的检测单元和保护通道的检测 单元根据预设规则向保护控制单元上报各自的状态信息， 包括以下几种情 况： The detecting unit of the working channel of the protection device in the downstream network element node and the detecting unit of the protection channel report the status information to the protection control unit according to the preset rule, including the following situations:
第一种情况： 当工作通道检测单元接收到上游业务状态指示为上游客 户侧业务故障指示时， 启动预设规则中保护控制单元根据上游客户侧故障 指示为工作通道检测单元设置的第一拖延时间， 当第一拖延时间到期后， 向保护控制单元上报信号失效状态信息。 The first case: when the working channel detecting unit receives the upstream service status indication as the upstream customer side service fault indication, the first delay time set by the protection control unit for the working channel detecting unit according to the upstream client side fault indication is started in the preset rule. After the first delay time expires, the signal failure status information is reported to the protection control unit.
第二种情况： 当保护通道检测单元接收到上游业务故障指示为上游客 户侧业务故障指示时， 启动预设规则中保护控制单元根据上游客户侧故障 指示为工作通道检测单元设置的第二拖延时间， 当第二拖延时间到期后， 向保护控制单元上报信号失效状态信息。 The second case: when the protection channel detecting unit receives the upstream service fault indication as the upstream client side service fault indication, the second delay time set by the protection control unit for the working channel detecting unit according to the upstream client side fault indication is started in the preset rule. After the second delay time expires, the signal failure status information is reported to the protection control unit.
第三种情况： 当工作通道检测单元接收到上游业务状态指示为上游户 侧业务恢复指示时， 启动预设规则中保护控制单元根据上游客户侧业务恢 复指示为工作通道检测单元设置的第三拖延时间， 当第三拖延时间 ij期 后， 向保护控制单元上报信号正常状态信息。 The third case: when the working channel detecting unit receives the upstream service status indication as the upstream user side service recovery indication, the third delay in the preset control rule set by the protection control unit to the working channel detecting unit according to the upstream client side service recovery indication is started. Time, after the third delay time ij period, report the signal normal status information to the protection control unit.
第四种情况： 当保护通道检测单元接收到上游业务故障指示为上游客 户侧业务恢复指示时， 启动预设规则中保护控制单元根据上游客户侧业务 恢复指示为工作通道检测单元设置的第四拖延时间， 当第四拖延时间到期
后， 向保护控制单元上报信号正常状态信息。 The fourth case: when the protection channel detecting unit receives the upstream service fault indication as the upstream client side service recovery indication, the fourth delay that the protection control unit sets for the working channel detecting unit according to the upstream client side service recovery indication is started in the preset rule. Time, when the fourth delay expires After that, the signal normal status information is reported to the protection control unit.
第五种情况： 当工作通道检测单元接收到上游业务状态指示为上游 The fifth case: when the working channel detecting unit receives the upstream service status indication as upstream
OTN业务故障指示时， 启动预设规则中保护控制单元根据上游 OTN业务 故障指示为工作通道检测单元设置的第五拖延时间， 当第五拖延时间到期 后， 向保护控制单元上报信号失效状态信息。 In the OTN service fault indication, the fifth delay time set by the protection control unit for the working channel detection unit according to the upstream OTN service failure indication is started in the preset rule. When the fifth delay time expires, the signal failure status information is reported to the protection control unit. .
第六种情况： 当保护通道检测单元接收到上游业务状态指示为上游 OTN业务恢复指示时， 启动预设规则中保护控制单元根据上游 OTN业务 恢复指示为保护通道检测单元设置的第六拖延时间， 当第六拖延时间到期 后， 向保护控制单元上报信号正常状态信息。 The sixth situation: when the protection channel detection unit receives the upstream service status indication as the upstream OTN service recovery indication, the sixth delay time set by the protection control unit in the preset rule to the protection channel detection unit according to the upstream OTN service recovery indication is started. When the sixth delay time expires, the signal normal status information is reported to the protection control unit.
上述第一拖延时间大于第二拖延时间， 上述第三拖延时间小于第四拖 延时间， 第一拖延时间与第二拖延时间的时间差大于由于时钟不能精确计 时带来两个时钟之间的时间误差， 第三拖延时间与第四拖延时间的时间差 大于由于时钟不能精确计时带来两个时钟之间的时间误差。 The first delay time is greater than the second delay time, the third delay time is less than the fourth delay time, and the time difference between the first delay time and the second delay time is greater than the time error between the two clocks due to the inaccurate timing of the clock. The time difference between the third delay time and the fourth delay time is greater than the time error between the two clocks due to the inaccurate timing of the clock.
优选地， 上述第五拖延时间和第六拖延时间为零， 节省因拖延而推迟 倒换所消耗的业务传送时间。 Preferably, the fifth delay time and the sixth delay time are zero, which saves the service transmission time consumed by the delay of the delay due to the delay.
与现有技术不同的是， 现有技术为下游网元节点的工作通道检测单元 和保护通道检测单元设置的拖延时间相同， 而本发明针对不同的上游业务 状态指示为工作通道检测单元和保护通道检测单元分别的设置的、 不同的 拖延时间， 如上述的第一拖延时间、 第二拖延时间、 第三拖延时间、 第四 拖延时间、 第五拖延时间、 第六拖延时间， 且第一拖延时间大于第二拖延 时间 , 第三拖延时间小于第四拖延时间。 Different from the prior art, the prior art sets the same delay time for the working channel detecting unit and the protection channel detecting unit of the downstream network element node, and the present invention indicates the working channel detecting unit and the protection channel for different upstream service states. Different delay times set by the detecting unit, such as the first delay time, the second delay time, the third delay time, the fourth delay time, the fifth delay time, the sixth delay time, and the first delay time More than the second delay time, the third delay time is less than the fourth delay time.
保护控制单元接收到工作通道检测单元或保护通道检测单元上报的 任一种状态信息后， 判断当前工作通道检测单元的状态信息是否为信号失 效状态， 保护通道检测单元的状态信息是否为信号正常状态， 当当前工作 通道检测单元的状态信息是信号失效状态， 并且保护通道检测单元的状态 信息是信号正常状态时， 控制保护执行单元进行工作通道和保护通道的倒 换， 否则， 不倒换。 After receiving the status information reported by the working channel detecting unit or the protection channel detecting unit, the protection control unit determines whether the status information of the current working channel detecting unit is a signal failure state, and whether the state information of the protection channel detecting unit is a signal normal state. When the status information of the current working channel detecting unit is a signal failure state, and the state information of the protection channel detecting unit is a signal normal state, the control protection executing unit performs switching of the working channel and the protection channel, otherwise, does not switch.
上述下游网元节点中保护装置的工作通道检测单元和保护通道检测 单元经由工作通道中继网络和保护通道的中继网络接收到业务信号后， 还 具有解封装的功能， 即将接收到的 OTN业务信号解封装为适合在客户侧
传输的信号格式， 即客户侧业务信号， 当上述接收到的 OTN业务信号中 携带有上游客户侧业务故障指示或上游 OTN业务故障指示时， 解封装后 的客户侧业务信号为故障信号， 下游保护域的第一个网元节点的工作通道 检测单元和保护通道检测单元依然能够检测到客户侧业务故障， 下游保护 域的第一个网元节点的工作通道检测单元和保护通道检测单元在封装成 的 OTN 业务信号的开销字节中设置客户侧业务故障指示， 设置方法同 S201 中保护域的第一个网元节点的工作通道检测单元和保护通道检测单 元的设置方法相同。 After receiving the service signal through the working channel relay network and the protection channel relay network, the working channel detecting unit and the protection channel detecting unit of the protection device in the downstream network element node also have a decapsulation function, and the OTN service to be received is received. Signal decapsulation is suitable for the customer side The transmitted signal format, that is, the client side service signal, when the received OTN service signal carries an upstream client side service failure indication or an upstream OTN service failure indication, the decapsulated client side service signal is a fault signal, and the downstream protection is performed. The working channel detecting unit and the protection channel detecting unit of the first network element node of the domain can still detect the customer side service fault, and the working channel detecting unit and the protection channel detecting unit of the first network element node of the downstream protection domain are encapsulated into The client side service fault indication is set in the overhead byte of the OTN service signal, and the setting method is the same as the setting method of the working channel detecting unit and the protection channel detecting unit of the first network element node of the protection domain in S201.
本实施例中， 通过下游网元节点中保护装置的工作通道检测单元和保 护通道检测单元分别经由工作通道中继网络和保护通道中继网络接收上 游业务状态指示， 并根据上游业务状态指示， 按照预设规则向保护控制单 元上报各自的状态信息， 以供保护控制单元根据状态信息控制保护执行单 元进行工作通道和保护通道的倒换； 预设规则包括保护控制单元根据不同 的上游业务状态指示， 为工作通道检测单元和保护通道检测单元分别设置 的、 不同的拖延时间。 实现了对光传送网络 OTN中通道保护倒换的控制， 降低了产生不必要倒换的几率， 减少了业务中断时间， 提升了 OTN的传 输可靠性。 In this embodiment, the working channel detecting unit and the protection channel detecting unit of the protection device in the downstream network element node respectively receive the upstream service status indication via the working channel relay network and the protection channel relay network, and according to the upstream service status indication, according to the indication The preset rule reports the status information to the protection control unit, so that the protection control unit controls the protection execution unit to perform the switching between the working channel and the protection channel according to the status information; the preset rule includes the protection control unit according to different upstream service status indications, Different delay times set by the working channel detecting unit and the protection channel detecting unit respectively. The control of channel protection switching in the optical transport network OTN is realized, the probability of unnecessary switching is reduced, the service interruption time is reduced, and the transmission reliability of the OTN is improved.
图 4为本发明 OTN中控制保护倒换范围的处理方法实施例二的流程 示意图， 图 4是以图 1所示 OTN保护场景中网元节点 A和网元节点 B之 间光纤故障为例进行的详细说明， 如图 4所示， 本实施例中的网元节点 E 和网元节点 I分别为各自保护域的下游网元节点。 4 is a schematic flowchart of Embodiment 2 of a method for controlling a protection switching range in an OTN according to the present invention. FIG. 4 is an example of an optical fiber failure between a network element node A and a network element node B in the OTN protection scenario shown in FIG. In detail, as shown in FIG. 4, the network element node E and the network element node I in this embodiment are respectively downstream network element nodes of the respective protection domains.
S401 : 网元节点 E中的保护控制单元根据不同的上游业务状态指示， 为工作通道检测单元和保护通道检测单元分别设置的、 不同的拖延时间。 S401: The protection control unit in the network element node E respectively sets different delay times for the working channel detecting unit and the protection channel detecting unit according to different upstream service state indications.
具体地， 网元节点 E中的保护控制单元根据上游客户侧业务故障指示 分别为工作通道检测单元和保护通道检测单元设置用于上报失效状态的 第一拖延时间 T1和第二拖延时间 T2, 其中， T1>T2; Specifically, the protection control unit in the network element node E sets a first delay time T1 and a second delay time T2 for reporting the failure state, respectively, for the working channel detection unit and the protection channel detection unit according to the upstream client side service failure indication, where , T1>T2;
网元节点 Ε 中的保护控制单元根据上游客户侧业务恢复指示分别为 工作通道检测单元和保护通道检测单元设置用于上报正常状态的第三拖 延时间 Τ3和第四拖延时间 Τ4 , 其中 Τ3<Τ4； The protection control unit in the network element node 设置 sets a third delay time Τ3 and a fourth delay time Τ4 for reporting the normal state for the working channel detection unit and the protection channel detection unit according to the upstream client side service recovery indication, where Τ3<Τ4 ;
网元节点 Ε保护控制单元根据上游 ΟΤΝ业务故障指示为工作通道检
测单元设置用于上 4艮失效状态的第五拖延时间 T5 , 优选地， 第五拖延时 间 T5=0; The network element node Ε protection control unit checks the working channel according to the upstream ΟΤΝ service failure indication. The measuring unit is configured to set a fifth delay time T5 for the upper 4 艮 failure state, preferably, the fifth delay time T5=0;
网元节点 Ε保护控制单元根据上游 ΟΤΝ业务恢复指示为保护通道检 测单元设置用于上 4艮正常状态的第六拖延时间 Τ6, 优选地， 第六拖延时 间 Τ6=0。 The network element node Ε protection control unit sets a sixth delay time Τ6 for the upper 艮 normal state for the protection channel detection unit according to the upstream ΟΤΝ service recovery indication, preferably, the sixth delay time Τ6=0.
S402: 网元节点 Ε中的工作通道检测单元和保护通道检测单元分别经 由工作通道中继网络和保护通道中继网络接收上游客户侧业务故障指示， 根据客户侧业务故障指示， 按照预设规则向保护控制单元上报各自的状态 信息。 S402: The working channel detecting unit and the protection channel detecting unit in the network element node respectively receive the upstream customer side service fault indication via the working channel relay network and the protection channel relay network, according to the customer side service fault indication, according to a preset rule The protection control unit reports its own status information.
具体地， 网元节点 Α和网元节点 Β之间的光纤故障， 网元节点 B作 为保护域 1的第一个网元节点， 网元节点 B中有两个检测单元分别于工作 通道和保护通道相连， 网元节点 B中工作通道检测单元和保护通道检测单 元都能够检测到客户侧业务故障指示， 网元节点 B的工作通道检测单元和 保护通道检测单元将接收到的客户侧业务信号封装成适合在 OTN 中继网 络中传输的 OTN格式的信号， 即 OTN业务信号， 并在 OTN业务信号的 开销字节中设置客户侧业务故障指示。 Specifically, the optical fiber between the network element node and the network element node 故障, the network element node B serves as the first network element node of the protection domain 1, and the network element node B has two detection units respectively in the working channel and protection. The channel is connected, and the working channel detecting unit and the protection channel detecting unit in the network element node B can detect the customer side service fault indication, and the working channel detecting unit and the protection channel detecting unit of the network element node B encapsulate the received client side service signal. The OTN format signal suitable for transmission in the OTN relay network, that is, the OTN service signal, and the client side service failure indication is set in the overhead byte of the OTN service signal.
网元节点 E 中的工作通道检测单元和保护通道检测单元分别经由工 作通道中继网络和保护通道中继网络接收到客户侧业务故障指示， 工作通 道检测单元根据客户侧业务故障指示启动第一拖延时间 T1 ,当 T1到期后， 向保护控制单元上报信号失效状态信息。 保护通道检测单元根据客户侧业 务故障指示启动第二拖延时间 T2, 当 T2到期后， 向保护控制单元上报信 号失效状态信息。 The working channel detecting unit and the protection channel detecting unit in the network element node E respectively receive the customer side service fault indication via the working channel relay network and the protection channel relay network, and the working channel detecting unit starts the first delay according to the customer side service fault indication. Time T1, when the T1 expires, the signal failure status information is reported to the protection control unit. The protection channel detecting unit starts the second delay time T2 according to the customer side service failure indication, and reports the signal failure status information to the protection control unit when the T2 expires.
S403: 网元节点 E中的保护控制单元根据状态信息控制保护执行单元 进行工作通道和保护通道的倒换。 S403: The protection control unit in the network element node E controls the protection execution unit to perform switching of the working channel and the protection channel according to the status information.
在 S402中， 由于 T1>T2, 保护通道检测单元先上报信号失效状态信 息， 而此时， 工作通道保护单元还处于信号正常状态， 因此， 网元节点 Ε 的保护控制单元不会触发保护执行单元进行工作通道和保护通道的倒换。 In S402, since T1>T2, the protection channel detecting unit first reports the signal failure state information, and at this time, the working channel protection unit is still in the signal normal state, therefore, the protection control unit of the network element node 不会 does not trigger the protection execution unit. Switching between the working channel and the protection channel.
由于网元节点 Ε 中的工作通道检测单元和保护通道检测单元对接收 到的 ΟΤΝ业务信号进行解封装操作， 解封装后的客户侧业务信号依然为 故障信号， 因此， 保护域 2中的各网元节点与保护域 1的各网元节点对应
操作相同， 因此， 保护域 2也不会发生倒换。 Since the working channel detecting unit and the protection channel detecting unit in the network element node 解 decapsulate the received ΟΤΝ service signal, the decapsulated client side service signal is still a fault signal, and therefore, each network in the protection domain 2 The meta-node corresponds to each network element node of the protection domain 1. The operation is the same, so the protection domain 2 will not be switched.
本实施例，通过网元节点 E中的保护控制单元根据不同的上游业务状 态指示， 为工作通道检测单元和保护通道检测单元分别设置的、 不同的拖 延时间， 网元节点 E中的工作通道检测单元和保护通道检测单元分别经由 工作通道中继网络和保护通道中继网络接收上游客户侧业务故障指示， 根 据客户侧业务故障指示， 按照预设规则向保护控制单元上报各自的状态信 息， 网元节点 E的保护控制单元根据状态信息控制保护执行单元进行工作 通道和保护通道的倒换。 实现了对光传送网络 OTN 中保护倒换范围的控 制， 降低了产生不必要倒换的几率， 减少了业务中断时间， 提升了 OTN 的传输可靠性。 In this embodiment, the protection control unit in the network element node E sets different delay times for the working channel detecting unit and the protection channel detecting unit according to different upstream service state indications, and the working channel detection in the network element node E The unit and the protection channel detecting unit respectively receive the upstream customer side service fault indication via the working channel relay network and the protection channel relay network, and report the respective state information to the protection control unit according to the preset rule according to the customer side service fault indication, the network element The protection control unit of the node E controls the protection execution unit to perform switching of the working channel and the protection channel according to the state information. The control of the protection switching range in the optical transport network OTN is realized, the probability of unnecessary switching is reduced, the service interruption time is reduced, and the transmission reliability of the OTN is improved.
与图 4所示实施例相似的， 当网元节点 A和网元节点 B之间客户侧 业务恢复时， 由于 T3<T4, 网元节点 Ε和网元节点 I中的工作通道检测单 元先上报信号正常状态信息， 因此， 保护域 1不会发生倒换， 同理， 保护 域 2也不会发生倒换。 Similar to the embodiment shown in FIG. 4, when the client side service between the network element node A and the network element node B is restored, the working channel detecting unit in the network element node 网 and the network element node I is reported first because T3<T4 The signal normal status information, therefore, the protection domain 1 will not be switched. Similarly, the protection domain 2 will not be switched.
图 5为本发明 ΟΤΝ中控制保护倒换范围的处理方法实施例三的流程 示意图， 图 5是以图 1所示 ΟΤΝ保护场景中网元节点 Β和中继网元节点 C之间光纤故障为例进行的详细说明， 如图 5所示， 本实施例中的网元节 点 Ε和网元节点 I为下游网元节点。 5 is a schematic flowchart of Embodiment 3 of a method for processing a protection switching range in the present invention, and FIG. 5 is an example of a fiber failure between a network element node and a relay network element node C in the protection scenario shown in FIG. For detailed description, as shown in FIG. 5, the network element node 网 and the network element node 1 in this embodiment are downstream network element nodes.
S501 : 网元节点 Ε中的保护控制单元根据不同的上游业务状态指示， 为工作通道检测单元和保护通道检测单元分别设置的、 不同的拖延时间。 S501: The protection control unit in the network element node 不同 sets different delay times for the working channel detection unit and the protection channel detection unit according to different upstream service status indications.
本步骤与图 3所示实施例中的 S301相同， 此处不再赘述。 This step is the same as S301 in the embodiment shown in FIG. 3, and details are not described herein again.
S502: 网元节点 Ε中的工作通道检测单元经由工作通道中继网络接收 上游 ΟΤΝ业务故障指示， 根据上游 ΟΤΝ业务故障指示， 按照预设规则向 保护控制单元上报的信号失效状态信息。 S502: The working channel detecting unit in the network element node receives the upstream service fault indication through the working channel relay network, and reports the signal failure state information reported to the protection control unit according to the preset rule according to the upstream fault service fault indication.
具体地， 中继网元节点 C接收到网元节点 Β发送的 ΟΤΝ业务信号， 检测到 ΟΤΝ业务信号故障， 在 ΟΤΝ的开销字节中设置 ΟΤΝ业务故障指 示， 以使下游网元节点 Ε的工作通道检测单元能够接收到 ΟΤΝ业务故障 指示。 Specifically, the relay network element node C receives the ΟΤΝ service signal sent by the network element node, detects a ΟΤΝ service signal failure, and sets a ΟΤΝ service fault indication in the 开销 overhead byte to enable the downstream network element node to work. The channel detecting unit can receive the ΟΤΝ service failure indication.
网元节点 Ε的工作通道检测单元根据接收到的 ΟΤΝ业务故障指示， 启动第五拖延时间 Τ5 , 当 Τ5到期后， 向保护控制单元上报信号失效状态
信息。 The working channel detecting unit of the network element node starts the fifth stalling time Τ5 according to the received service fault indication, and reports the signal invalid state to the protection control unit when the Τ5 expires. Information.
S503 : 网元节点 E中的保护控制单元根据状态信息控制保护执行单元 进行工作通道和保护通道的倒换。 S503: The protection control unit in the network element node E controls the protection execution unit to perform switching of the working channel and the protection channel according to the status information.
具体地， 网元节点 E的保护控制单元接收到工作通道检测单元上报的 信号失效状态信息后， 当前工作通道检测单元的状态信息为信号失状态， 当前保护通道检测单元的状态信息为信号正常状态， 则控制保护执行单元 进行工作通道和保护通道的倒换。 Specifically, after the protection control unit of the network element node E receives the signal failure status information reported by the working channel detection unit, the status information of the current working channel detection unit is a signal loss status, and the status information of the current protection channel detection unit is a signal normal status. , the control protection execution unit performs switching of the working channel and the protection channel.
网元节点 E 的保护控制单元为倒换后工作通道对应的检测单元和保 护通道对应的检测单元分别设置的、 不同的拖延时间。 具体设置方法参照 S301 , 此处不再赘述。 The protection control unit of the network element node E is respectively set to different delay times for the detection unit corresponding to the working channel after the switching and the detection unit corresponding to the protection channel. For the specific setting method, refer to S301, and details are not described here.
由于保护域 2中的第一个网元节点 F的两个检测单元接收到客户侧业 务信号均为客户侧故障信号， 因此， 保护域 2的各网元节点与图 3所示实 施例中对应地各网元节点处理方法相同， 此处不再赘述， 保护域 2不会发 生工作通道和保护通道的倒换。 Since the two detecting units of the first network element node F in the protection domain 2 receive the client side service signals as the client side fault signals, the network element nodes of the protection domain 2 correspond to the embodiment shown in FIG. The processing methods of the network element nodes are the same, and will not be described here. The protection domain 2 does not switch between the working channel and the protection channel.
本实施例， 网元节点 E中的保护控制单元根据不同的上游业务状态指 示， 为工作通道检测单元和保护通道检测单元分别设置的、 不同的拖延时 间。 网元节点 E中的保护控制单元根据不同的上游业务状态指示， 为工作 通道检测单元和保护通道检测单元分别设置的、 不同的拖延时间， 网元节 点 E 的保护控制单元根据状态信息控制保护执行单元进行工作通道和保 护通道的倒换。 实现了对光传送网络 OTN 中通道保护倒换的控制， 降低 了产生不必要倒换的几率， 减少了业务中断时间， 提升了 OTN的传输可 靠性。 In this embodiment, the protection control unit in the network element node E respectively sets different delay times for the working channel detecting unit and the protection channel detecting unit according to different upstream service status indications. The protection control unit in the network element node E sets different delay times for the working channel detection unit and the protection channel detection unit according to different upstream service status indications, and the protection control unit of the network element node E controls the protection execution according to the status information. The unit performs switching of the working channel and the protection channel. The control of the channel protection switching in the optical transport network OTN is realized, the probability of generating unnecessary switching is reduced, the service interruption time is reduced, and the transmission reliability of the OTN is improved.
图 6为本发明保护装置实施例一的结构示意图； 如图 6所示， 本实施 例的保护装置包括： Figure 6 is a schematic structural view of a first embodiment of the protection device of the present invention; as shown in Figure 6, the protection device of this embodiment includes:
工作通道检测单元 1、 保护通道检测单元 2、 保护控制单元 3和保护 执行单元 4, 其中， 工作通道检测单元 1和保护通道检测单元 2分别与保 护控制单元 3和保护执行单元 4连接。 The working channel detecting unit 1, the protection channel detecting unit 2, the protection control unit 3 and the protection executing unit 4, wherein the working channel detecting unit 1 and the protection channel detecting unit 2 are connected to the protection control unit 3 and the protection executing unit 4, respectively.
工作通道检测单元 1和保护通道检测单元 2分别用于经由工作通道中 继网络和保护通道中继网络接收上游业务状态指示， 并根据上游业务状态 指示， 按照预设规则向保护控制单元 3上报各自的状态信息；
保护控制单元 3用于设置预设规则， 并根据工作通道检测单元 1和保 护通道检测单元 2上报的状态信息控制保护执行单元进行工作通道和保护 通道的倒换； 预设规则包括保护控制单元根据不同的上游业务状态指示， 为工作通道检测单元 1和保护通道检测单元 2分别设置的、 不同的拖延时 间； The working channel detecting unit 1 and the protection channel detecting unit 2 are respectively configured to receive an upstream service status indication via the working channel relay network and the protection channel relay network, and report the respective to the protection control unit 3 according to the preset rule according to the upstream service status indication. Status information; The protection control unit 3 is configured to set a preset rule, and control the protection execution unit to perform switching of the working channel and the protection channel according to the state information reported by the working channel detecting unit 1 and the protection channel detecting unit 2; the preset rule includes the protection control unit according to different The upstream service status indication is different delay time set for the working channel detecting unit 1 and the protection channel detecting unit 2 respectively;
保护执行单元 4用于在保护控制单元 3的控制下进行工作通道和保护 通道的倒换。 The protection execution unit 4 is used for switching the working channel and the protection channel under the control of the protection control unit 3.
上述实施例中， 上游业务状态指示包括上游客户侧业务故障指示、 上 游客户侧业务恢复指示、上游 OTN业务故障指示和上游 OTN业务恢复指 示； 对应地， 预设规则具体包括： 保护控制单元 3根据上游客户侧业务故 障指示分别为工作通道检测单元 1和保护通道检测单元 2设置用于上报失 效状态的第一拖延时间和第二拖延时间， 且第一拖延时间大于第二拖延时 间。 保护控制单元 3根据上游客户侧业务恢复指示分别为工作通道检测单 元 1和保护通道检测单元 2设置用于上 ^艮正常状态的第三拖延时间和第四 拖延时间， 且第三拖延时间小于第四拖延时间； 保护控制单元 3根据上游 OTN业务故障指示分别为工作通道检测单元 1和保护通道检测单元 2设置 用于上报失效状态的第五拖延时间； 保护控制单元 3根据上游 OTN业务 恢复指示分别为工作通道检测单元 1和保护通道检测单元 2设置用于上报 正常状态的第六拖延时间。 In the foregoing embodiment, the upstream service status indication includes an upstream customer side service fault indication, an upstream client side service recovery indication, an upstream OTN service fault indication, and an upstream OTN service recovery indication. Correspondingly, the preset rule specifically includes: the protection control unit 3 according to the protection control unit 3 The upstream client-side service fault indication is configured to set a first delay time and a second delay time for reporting the failure state for the working channel detecting unit 1 and the protection channel detecting unit 2, respectively, and the first delay time is greater than the second delay time. The protection control unit 3 sets a third delay time and a fourth delay time for the normal state of the working channel detecting unit 1 and the protection channel detecting unit 2 according to the upstream client side service recovery instruction, and the third delay time is less than the third delay time. The fourth delay time is set for the working channel detecting unit 1 and the protection channel detecting unit 2 to report the failure state according to the upstream OTN service failure indication; the protection control unit 3 respectively according to the upstream OTN service recovery indication A sixth stall time for reporting the normal state is set for the working channel detecting unit 1 and the guard channel detecting unit 2.
本保护装置实施例中的各单元用于执行图 2所示方法实施例的技术方 案， 其实现原理和技术效果类似， 此处不再赘述。 The units in the embodiment of the present protection device are used to implement the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.
本领域普通技术人员可以理解： 实现上述方法实施例的全部或部分步骤可 以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存 储介质中， 该程序在执行时， 执行包括上述方法实施例的步骤； 而前述的存储 介质包括： ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。 A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
最后应说明的是： 以上各实施例仅用以说明本发明的技术方案， 而非对 其限制； 尽管参照前述各实施例对本发明进行了详细的说明， 本领域的普通 技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改， 或者对其中部分或者全部技术特征进行等同替换； 而这些修改或者替换， 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.
Claims
1、 一种光传送网络 OTN中控制保护倒换范围的处理方法， 其特征在 于， 包括： 1. A method for controlling protection switching range in optical transport network OTN, which is characterized by including:
保护装置的工作通道检测单元和保护通道检测单元分别经由工作通 道中继网络和保护通道中继网络接收上游业务状态指示， 并根据所述上游 业务状态指示， 按照预设规则向保护控制单元上报各自的状态信息， 以供 所述保护控制单元根据所述状态信息控制保护执行单元进行工作通道和 保护通道的倒换； 所述预设规则包括所述保护控制单元根据不同的上游业 务状态指示， 为所述工作通道检测单元和所述保护通道检测单元分别设置 的、 不同的拖延时间。 The working channel detection unit and the protection channel detection unit of the protection device receive the upstream service status indication via the working channel relay network and the protection channel relay network respectively, and according to the upstream service status indication, report their respective status to the protection control unit according to the preset rules. status information, for the protection control unit to control the protection execution unit to switch the working channel and the protection channel according to the status information; the preset rules include the protection control unit according to different upstream service status indications, for the The working channel detection unit and the protection channel detection unit are respectively set to different delay times.
2、 根据权利要求 1所述的方法， 其特征在于， 所述上游业务状态指 示包括上游客户侧业务故障指示、 上游客户侧业务恢复指示、 上游 OTN 业务故障指示和上游 OTN业务恢复指示； 对应地， 所述预设规则具体包 括： 2. The method according to claim 1, characterized in that the upstream service status indication includes an upstream client-side service failure indication, an upstream client-side service recovery indication, an upstream OTN service failure indication and an upstream OTN service recovery indication; correspondingly , the preset rules specifically include:
所述保护控制单元根据所述上游客户侧业务故障指示分别为所述工 作通道检测单元和所述保护通道检测单元设置用于上报失效状态的第一 拖延时间和第二拖延时间， 且所述第一拖延时间大于所述第二拖延时间； 所述保护控制单元根据所述上游客户侧业务恢复指示分别为所述工 作通道检测单元和所述保护通道检测单元设置用于上报正常状态的第三 拖延时间和第四拖延时间， 且所述第三拖延时间小于所述第四拖延时间； 所述保护控制单元根据所述上游 OTN业务故障指示为所述工作通道 检测单元设置用于上报失效状态的第五拖延时间； The protection control unit sets a first delay time and a second delay time for reporting a failure status for the working channel detection unit and the protection channel detection unit respectively according to the upstream client-side service failure indication, and the third delay time is A delay time is greater than the second delay time; the protection control unit sets a third delay for reporting a normal state for the working channel detection unit and the protection channel detection unit respectively according to the upstream client-side service recovery indication. time and a fourth delay time, and the third delay time is less than the fourth delay time; the protection control unit sets a third delay time for the working channel detection unit to report a failure status according to the upstream OTN service failure indication. 5. Delay;
所述保护控制单元根据所述上游 OTN业务恢复指示为所述保护通道 检测单元设置用于上 正常状态的第六拖延时间。 The protection control unit sets a sixth delay time for the upstream normal state for the protection channel detection unit according to the upstream OTN service recovery indication.
3、 根据权利要求 2所述的方法， 其特征在于， 所述第五拖延时间为零。 3. The method according to claim 2, characterized in that the fifth delay time is zero.
4、 根据权利要求 2所述的方法， 其特征在于， 所述第六拖延时间为零。4. The method according to claim 2, characterized in that the sixth delay time is zero.
5、 一种保护装置， 其特征在于， 包括： 5. A protection device, characterized in that it includes:
工作通道检测单元、 保护通道检测单元、 保护控制单元和保护执行单 元， 其中， 所述工作通道检测单元和所述保护通道检测单元分别与所述保 护控制单元和所述保护执行单元连接， 所述保护控制单元和所述保护执行
单元连接； a working channel detection unit, a protection channel detection unit, a protection control unit and a protection execution unit, wherein the working channel detection unit and the protection channel detection unit are respectively connected to the protection control unit and the protection execution unit, protection control unit and the protection execution unit connection;
所述工作通道检测单元和所述保护通道检测单元分别用于经由工作 通道中继网络和保护通道中继网络接收上游业务状态指示， 并根据所述上 游业务状态指示， 按照预设规则向保护控制单元上报各自的状态信息； 所述保护控制单元用于设置所述预设规则， 并根据所述工作通道检测 单元和所述保护通道检测单元上报的状态信息控制保护执行单元进行工 作通道和保护通道的倒换； 所述预设规则包括所述保护控制单元根据不同 的上游业务状态指示， 为所述工作通道检测单元和所述保护通道检测单元 分别设置的、 不同的拖延时间； The working channel detection unit and the protection channel detection unit are respectively configured to receive upstream service status indications via the working channel relay network and the protection channel relay network, and based on the upstream service status indications, send signals to the protection control according to preset rules. The units report their respective status information; the protection control unit is used to set the preset rules, and control the protection execution unit to perform the working channel and protection channel according to the status information reported by the working channel detection unit and the protection channel detection unit. switching; The preset rules include different delay times set by the protection control unit for the working channel detection unit and the protection channel detection unit respectively according to different upstream service status indications;
所述保护执行单元用于在所述保护控制单元的控制下进行工作通道 和保护通道的倒换。 The protection execution unit is used to switch the working channel and the protection channel under the control of the protection control unit.
6、 根据权利要求 5 所述的保护装置， 其特征在于， 所述上游业务状 态指示包括上游客户侧业务故障指示、 上游客户侧业务恢复指示、 上游 OTN业务故障指示和上游 OTN业务恢复指示； 对应地， 所述预设规则具 体包括： 6. The protection device according to claim 5, wherein the upstream service status indication includes an upstream client-side service failure indication, an upstream client-side service recovery indication, an upstream OTN service failure indication and an upstream OTN service recovery indication; corresponding to Specifically, the preset rules include:
所述保护控制单元根据所述上游客户侧业务故障指示分别为所述工 作通道检测单元和所述保护通道检测单元设置用于上报失效状态的第一 拖延时间和第二拖延时间， 且所述第一拖延时间大于所述第二拖延时间； 所述保护控制单元根据所述上游客户侧业务恢复指示分别为所述工 作通道检测单元和所述保护通道检测单元设置用于上报正常状态的第三 拖延时间和第四拖延时间， 且所述第三拖延时间小于所述第四拖延时间； 所述保护控制单元根据所述上游 OTN业务故障指示为所述工作通道 检测单元设置用于上报失效状态的第五拖延时间； The protection control unit sets a first delay time and a second delay time for reporting a failure status for the working channel detection unit and the protection channel detection unit respectively according to the upstream client-side service failure indication, and the third delay time is A delay time is greater than the second delay time; the protection control unit sets a third delay for reporting a normal state for the working channel detection unit and the protection channel detection unit respectively according to the upstream client-side service recovery indication. time and a fourth delay time, and the third delay time is less than the fourth delay time; the protection control unit sets a third delay time for the working channel detection unit to report a failure status according to the upstream OTN service failure indication. 5. Delay;
所述保护控制单元根据所述上游 OTN业务恢复指示为所述保护通道 检测单元设置用于上 4艮正常状态的第六拖延时间。 The protection control unit sets a sixth delay time for the upstream normal state for the protection channel detection unit according to the upstream OTN service recovery indication.
7、 根据权利要求 6所述的保护装置， 其特征在于， 所述第五拖延时间为 令。 7. The protection device according to claim 6, characterized in that the fifth delay time is .
8、 根据权利要求 6所述的保护装置， 其特征在于， 所述第六拖延时间为 令。
8. The protection device according to claim 6, characterized in that the sixth delay time is .
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| CN1874201A (en) * | 2006-06-20 | 2006-12-06 | 中兴通讯股份有限公司 | Method and equipment for triggering protection of optical network under shared configuration of receiving devices |
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| CN1874201A (en) * | 2006-06-20 | 2006-12-06 | 中兴通讯股份有限公司 | Method and equipment for triggering protection of optical network under shared configuration of receiving devices |
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