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Publication numberWO2012037754 A1
Publication typeApplication
Application numberPCT/CN2010/079521
Publication date29 Mar 2012
Filing date7 Dec 2010
Priority date26 Sep 2010
Also published asCN101951303A, CN101951303B
Publication numberPCT/2010/79521, PCT/CN/10/079521, PCT/CN/10/79521, PCT/CN/2010/079521, PCT/CN/2010/79521, PCT/CN10/079521, PCT/CN10/79521, PCT/CN10079521, PCT/CN1079521, PCT/CN2010/079521, PCT/CN2010/79521, PCT/CN2010079521, PCT/CN201079521, WO 2012/037754 A1, WO 2012037754 A1, WO 2012037754A1, WO-A1-2012037754, WO2012/037754A1, WO2012037754 A1, WO2012037754A1
Inventors吴青
Applicant中兴通讯股份有限公司
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Method and node device for realizing bidirectional linear protection switching for multiplex section
WO 2012037754 A1
Abstract
The invention discloses a method for realizing a bidirectional linear protection switching for a multiplex section. The method includes: after a node device calculates the bridging request with the highest priority in a protection group, it performs bridging and switching for the service corresponding to the bridging request, according to a first decision mode. The invention also discloses the node device including at least one working port and one protection port, wherein the working port and the protection port interact with an automatic protection switching (APS) module and the APS module is set for: performing bridging and switching for the service corresponding to a bridging request, according to the first decision mode, after calculating the bridging request with the highest priority in a protection group. The invention can greatly improve the switch efficiency of the bidirectional 1: N linear protection for a multiplex section.
Claims  translated from Chinese  (OCR text may contain errors)
权利要求书 Claims
1、 一种实现复用段双向线性保护倒换的方法, 该方法包括: 节点设备计算出保护组内优先级最高的桥接请求后, 根据第一决策模式进行该桥接请求对应业务的桥接和倒换。 1. A method to achieve the complex switching bidirectional linear protection section, the method comprising: a node within the protective equipment is calculated after the group with the highest priority bridge request, to carry out the bridge request the corresponding service bridging and switching mode according to the first decision.
2、如权利要求1所述的方法, 其中: 所述节点设备根据第一决策模式进行该桥接请求对应业务的桥接和倒换的步骤包括: 所述节点设备若判断本节点设备配置的是第一决策模式, 则进行该桥接请求对应业务的桥接和倒换。 2. The method of claim 1, wherein: the bridge request the corresponding service bridging and switching step comprises the device according to the first node in the decision-making mode: the node device of the node if the judgment is the first device configuration decision mode, carry out the bridge request the corresponding service bridging and switching.
3、如权利要求1所述的方法, 其中: 所述节点设备根据第一决策模式进行该桥接请求对应业务的桥接和倒换的步骤包括: 所述节点设备若判断接收到的复用段开销K2指示的是第一决策模式, 则进行该桥接请求对应业务的桥接和倒换。 3. The method of claim 1, wherein: the node device according to the first decision-making model that bridge request the corresponding service bridging and switching step comprises: if the node device determines whether the received multiplex section overhead K2 the decision is the first indication mode, the bridge request to carry out the corresponding service bridging and switching.
4、 如权利要求3所述的方法, 其中: 所述节点设备若判断接收到的复用段开销K2指示的是第一决策模式的步骤之后, 所述方法还包括: 保存所述第一决策模式; 所述根据第一决策模式进行该桥接请求对应业务的桥接和倒换的步骤之后, 所述方法还包括: 发送指示所述第一决策模式的复用段开销K2。 4. The method of claim 3, wherein: the node device if it is determined after the received multiplex section overhead K2 indicates the first step of the decision-making mode, the method further comprising: storing the first decision mode; after the bridge request the corresponding service bridging and switching steps of the decision-making according to the first mode, the method further comprising: transmitting multiplex section overhead K2 indicating the first decision-making mode.
5、 如权利要求1-4中任一项所述的方法, 其中: 所述根据第一决策模式进行该桥接请求对应业务的桥接和倒换的过程中, 所述方法还包括: 所述节点设备若接收到网管下发的倒换控制信息, 且判断所述倒换控制信息携带的决策模式与当前执行的决策模式不同, 则向所述网管上报决策模式不匹配信息。 The node device: 5. The method as claimed in any one of claims 1-4, wherein: the first based on the decision-making process of the bridge request mode corresponding service bridging and switching, said method further comprising Upon receiving the network issued a switching control information, and determine the switching control information carried in decision-making models and decision-making models currently executing different, to the decision-making model does not match the network management reporting information.
6、 一种节点设备, 包括至少一个工作端口和一个保护端口, 所述工作端口和所述保护端口与自动保护倒换( APS )模块交互, 其中: 所述APS模块设置为: 计算出保护组内优先级最高的桥接请求后, 根据第一决策模式进行该桥接请求对应业务的桥接和倒换。 6. A node device, including the port, the working port of the interaction module port protection and automatic protection switching (APS) at least one working port and a protection and, wherein: the APS module is configured to: calculate within the protective group after the highest priority bridge request, to carry out the bridge request the corresponding service bridging and switching mode according to the first decision.
7、 如权利要求6所述的节点设备, 其中: 所述APS 模块是设置为按如下方式根据第一决策模式进行该桥接请求对应业务的桥接和倒换: 若判断本节点设备配置的是第一决策模式, 则进行该桥接请求对应业务的桥接和倒换。 7. The node device according to claim 6, wherein: the APS module is configured as follows according to the first decision-making model that bridge request the corresponding service bridging and switching: If this judgment is the first node device configuration decision mode, carry out the bridge request the corresponding service bridging and switching.
8、 如权利要求6所述的节点设备, 其中: 所述APS 模块是设置为按如下方式根据第一决策模式进行该桥接请求对应业务的桥接和倒换: 若判断接收到的复用段开销K2字节指示的是第一决策模式, 则进行该桥接请求对应业务的桥接和倒换。 8. The node device according to claim 6, wherein: the APS module is configured as follows according to the first decision-making model that bridge request the corresponding service bridging and switching: If the judge received multiplex section overhead K2 the first byte indicates the decision-making mode, carry out the bridge request the corresponding service bridging and switching.
9、 如权利要求8所述的节点设备, 其中: 所述APS模块还设置为: 保存所述第一决策模式, 在完成桥接和倒换后还用于发送指示所述第一决策模式的复用段开销K2。 9, node device according to claim 8, wherein: the APS module is further configured to: save the first decision-making mode, after the completion of bridging and switching is also used to send an indication of the first decisions multiplexing mode section overhead K2.
10、 如权利要求6-9中任一项所述的节点设备, 其中: 所述APS模块还设置为: 若接收到网管下发的倒换控制信息, 且判断所述倒换控制信息携带的决策模式与当前执行的决策模式不同, 则向所述网管上报决策模式不匹配信息。 10. The node device according to any one of claims 6-9, wherein: the APS module is further configured to: when receiving the switching control information network issued, and determine the switching control information carried in decision-making model and decision-making mode of the current implementation of the different, the NMS to report the decision-making model does not match the information.
Description  translated from Chinese  (OCR text may contain errors)

一种实现复用段双向线性保护倒换的方法及节点设备 One kind MSP bidirectional linear protection switching method and device implementation node

技术领域本发明涉及光网络技术领域, 特别是涉及一种实现复用段双向线性保护倒换的方法及节点设备。 The present invention relates to the field of optical networking technology, particularly to a realization MSP bidirectional linear protection switching method and device node.

背景技术 Background technique

在G.841标准(同步数字体系( Synchronous Digital Hierarchy, SDH )网络保护结构)规定的自动保护倒换( Automatic Protection Switched, APS )协议中, 对复用段1 :N双向保护倒换的执行过程严格按照两节点间交互协议字节三次(3-phase )完成倒换。 Automatic protection switching (Automatic Protection Switched, APS) protocol G.841 standard (Synchronous Digital Hierarchy (Synchronous Digital Hierarchy, SDH) network protective structure) in provisions for Multiplex Section 1: N bidirectional protection switching in strict accordance with the implementation process byte protocol interaction between two nodes of three (3-phase) to complete the switchover. 远端请求为最高请求时, 执行远端请求信号的桥接,接收的K2字节和发送的K1字节中的信号编号指示相同的工作业务信号, 执行该工作业务的倒换。 When the distal end of the request is the highest request, the Executive distal bridging request signal, K2 and K1 bytes received bytes sent a signal indicating the same number of working traffic signals, which work execute switching operations. 如图1所示, 按照3-phase完成倒换的过程如下: 1, according to the 3-phase to complete the switchover process is as follows:

最初节点设备两端都发送NR0,0的信令(NR为无请求, 请求桥接信号和已桥接信号都为0 ) 。 Initially nodes at both ends of the signaling device sends NR0,0 (NR is no request, the request signal and bridge bridging signals are 0). 当左端节点设备检测到信号2劣化时, 发送SD2,0 (请求对端桥接信号 When the device detects a signal of the left node 2 deteriorates, sending SD2,0 (request for bridging signals end

2 ) ; 右端节点设备完成信号2桥接后, 发送RR2,2 (反向请求, 请求对端也桥接信号2, 并告知对端本侧已完成信号2桥接) ; 左端节点设备完成信号2的桥接和倒换, 发送SD2,2 (通知对端已完成信号2桥接) ; 右端节点设备完成信号2倒换。 2); right after the node equipment to complete signal 2 bridging, send RR2,2 (reverse request with the peer also bridged signal 2, and inform the peer side of the bridge has been completed signal 2); the left node equipment to complete the signal bridge 2 and switching, send SD2,2 (notified end signal 2 has been completed bridge); the right end node equipment to complete the switching signal 2.

当右端节点设备检测到信号3中断时,发送SF3,2(请求对端桥接信号3 , 通知对端目前仍是桥接信号2的状态) 左端节点设备撤消信号2的桥接倒换, 并执行信号3的桥接, 然后, 发送RR3,3 (反向请求, 请求对端桥接信号3 , 并告知对端本侧已完成信号3 桥接) ; 右端节点设备完成信号3 的桥接, 发送SF3,3 (通知对端已完成信号3 桥接) 左端节点设备完成信号3的倒换。 When the device detects a signal right node 3 is interrupted, sending SF3,2 (request for bridging end signal 3, notify the peer is still bridged signal state 2) revoke the left node device signal switching bridge 2 and 3 perform signal bridge, then send RR3,3 (reverse request, the request to end the bridge signal 3, and inform the peer side of the bridge has been completed signal 3); the right end node devices to complete the signal bridge 3, the transmission SF3,3 (notified end completed signal 3 bridged) left node equipment to complete the switchover signal 3.

当右端节点设备检测到工作通道3的故障恢复时, 发送WTR3,3 (通知对端进入倒换的等待恢复状态) 左端节点设备因工作通道2 仍有劣化, 故撤消信号3 的倒换后, 发送 When the device detects a fault right node to restore the working channel 3 sends WTR3,3 (notification peer into the switching state of WTR) left node equipment due to deterioration of the working channel 2 is still, so to undo switching signal 3 after sending

SD2,3 (请求对端桥接信号2, 因为SD优先级高于WTR ) ; 右端节点设备撤消信号3的倒换并完成信号2桥接后, 发送RR2,2 (反向请求, 请求对端也桥接信号2, 并告知对端本侧已完成信号2桥接) ; 左端节点设备完成信号2的桥接和倒换, 发送SD2,2; 右端节点设备再完成信号2的倒换。 SD2,3 (request for bridging end signal 2, because SD higher priority than WTR); right after the withdrawal of the node device signal switching complete signal 2 and 3 bridging, send RR2,2 (reverse request with the peer also bridged signal 2, and inform the peer side of the bridge has been completed signal 2); the left node equipment to complete the bridging and switching signal 2, the transmission SD2,2; right then complete signal switching device node 2.

可见, 节点设备(本端)检测到信号发生变化后, 先通知对端桥接相应的信号, 对端桥接后再通知本端桥接, 本端进行桥接倒换, 然后对端再完成倒换, 信令需要通过三次交互才执行完两端的桥接倒换, 每次桥接倒换过程中两端的APS的决策各需执行两次, 业务倒换时间较长。 Visible, the node device (local) after detecting the signal changes, the first end of the bridge to notify the appropriate signal to end the bridge and then notify the local bridging, bridging this end switching, and then complete the peer switching, signaling the need three interactive bridged by only executing the ends of the switchover, every decision APS bridge across the switching process is performed twice each need, business recovery time is longer.

发明内容本发明所要解决的技术问题是, 提供了一种实现复用段双向线性保护倒换的方法及节点设备, 以在不影响与运行标准协议的设备对接的情况下, 提高复用段1: N双向线性保护倒换效率。 SUMMARY OF THE INVENTION The technical problem to be solved is to provide a way to implement MSP bidirectional linear protection method and node device switchover to the case does not affect the operation of standard protocols docking equipment, improve the multiplex section 1: N bidirectional linear protection switching efficiency. 为了解决上述问题, 本发明提供一种实现复用段双向线性保护倒换的方法, 该方法包括: 节点设备计算出保护组内优先级最高的桥接请求后, 根据第一决策模式进行该桥接请求对应业务的桥接和倒换。 To solve the above problems, the present invention provides a method to achieve switching bidirectional linear multiplex section protection, the method comprising: calculating an intra-node equipment protection group with the highest priority bridge request, to carry out the request corresponding to the bridge according to the first mode of decision-making bridging and switching operations. 所述节点设备根据第一决策模式进行该桥接请求对应业务的桥接和倒换的步骤包括: 所述节点设备若判断本节点设备配置的是第一决策模式, 则进行该桥接请求对应业务的桥接和倒换。 Step the node device corresponding to the bridge request service bridging and switching according to the first decision mode comprising: if the node device is determined that the node is the first decision-making device configuration mode, bridging the bridge request and the corresponding business switchover. 所述节点设备根据第一决策模式进行该桥接请求对应业务的桥接和倒换的步骤包括: 所述节点设备若判断接收到的复用段开销K2指示的是第一决策模式, 则进行该桥接请求对应业务的桥接和倒换。 Step the node device corresponding to the bridge request service bridging and switching according to the first decision mode comprising: if the node device determines whether the received multiplex section overhead K2 is the first indication of the decision-making mode, carry out the bridge request corresponding service bridging and switching. 所述节点设备若判断接收到的复用段开销K2指示的是第一决策模式的步骤之后, 所述方法还包括: 保存所述第一决策模式; 所述根据第一决策模式进行该桥接请求对应业务的桥接和倒换的步骤之后, 所述方法还包括: 发送指示所述第一决策模式的复用段开销K2。 If the node device is determined after receiving the multiplex section overhead K2 indicates the first step of the decision-making mode, the method further comprising: storing the first decision-making mode; the conduct of the bridge request according to the first mode of decision-making after the corresponding service bridging and switching step, the method further comprising: transmitting multiplex section overhead K2 indicating the first decision-making mode. 所述根据第一决策模式进行该桥接请求对应业务的桥接和倒换的过程中, 所述方法还包括: 所述节点设备若接收到网管下发的倒换控制信息, 且判断所述倒换控制信息携带的决策模式与当前执行的决策模式不同, 则向所述网管上报决策模式不匹配信息。 According to the first mode of bridging and switching decision-making process of the bridge request the corresponding service, the method further comprising: if the node device sent to the NMS received under the switching control information, and it is determined to carry the switching control information decision making model and the implementation of the current mode is different, the NMS to report the decision-making model does not match the information. 为了解决上述问题, 本发明还提供一种节点设备, 包括至少一个工作端口和一个保护端口, 所述工作端口和所述保护端口与自动保护倒换( APS ) 模块交互, 其中: 所述APS模块设置为: 计算出保护组内优先级最高的桥接请求后, 根据第一决策模式进行该桥接请求对应业务的桥接和倒换。 To solve the above problems, the present invention also provides a node device comprising at least one working port and a port protection, the working port and the port protection and automatic protection switching (APS) module interaction, wherein: the APS module settings as follows: after calculating an intra-group protection the highest priority bridge request, to carry out the bridge request the corresponding service bridging and switching mode according to the first decision. 所述APS 模块是设置为按如下方式根据第一决策模式进行该桥接请求对应业务的桥接和倒换: 若判断本节点设备配置的是第一决策模式, 则进行该桥接请求对应业务的桥接和倒换。 The APS module is configured as follows to the bridge request the corresponding service bridging and switching mode according to the first decision: to judge if this node is the first decision-making device configuration mode, the bridge request to carry out the corresponding service bridging and switching . 所述APS 模块是设置为按如下方式根据第一决策模式进行该桥接请求对应业务的桥接和倒换: 若判断接收到的复用段开销K2字节指示的是第一决策模式, 则进行该桥接请求对应业务的桥接和倒换。 The APS module is configured as follows to the bridge request the corresponding service bridging and switching mode according to the first decision: If the judge received multiplex section overhead K2 byte indicates the first decision-making mode, the bridge conduct request the corresponding service bridging and switching. 所述APS模块还设置为: 保存所述第一决策模式, 在完成桥接和倒换后还用于发送指示所述第一决策模式的复用段开销K2。 The APS module is further configured to: save the first decision-making mode, after the completion of bridging and switching is also used to send the multiplex section overhead K2 indicating the first mode of decision-making. 所述APS模块还设置为: 若接收到网管下发的倒换控制信息, 且判断所述倒换控制信息携带的决策模式与当前执行的决策模式不同, 则向所述网管上报决策模式不匹配信息。 The APS module is further configured to: when receiving the network issued a switching control information, and determine the switching control information carried in decision-making models and decision-making models currently executing different, to the decision-making model does not match the network management reporting information. 本发明提供了一种实现复用段双向线性保护倒换的方法及节点设备, 将倒换过程中协议字节的三次交互减少为一次交互, 相应地决策等处理也只有一次, 可大大提高复用段1 :N双向线性保护的倒换效率, 从而弥补其它处理单元的不足, 具体地来说, 执行复用段保护决策得到了优化, 那么相应将减少对其他处理单元的要求。 The present invention provides a method for realizing MSP bidirectional linear protection switching node device and method of the three-byte protocol interaction switching process is reduced to one interaction, corresponding decision-making process only once, can greatly improve the MSP 1: N bidirectional linear protection switching efficiency, which make up the other processing units, specifically, the implementation of MSP decision has been optimized, then the corresponding processing units will be reduced to other requirements. 例如, 倒换效率提高后, 相应可以降低对快速检测告警的要求, 通常快速检测告警由硬件完成, 如此相对可以降低对硬件的一些参数要求。 For example, after switching efficiency, can be reduced to the corresponding requirements of rapid detection of an alarm, the alarm is usually rapid detection performed by hardware, so hardware can be reduced relative to a number of parameters. 同时, 通告phase模式也增强了可控性。 Meanwhile, the announcement phase mode also enhances controllability.

附图概述图1是复用段1: N双向线性保护倒换3-phase 的APS消息流程示意图; 图2是本发明一实施例的节点设备的示意图; 图3为本发明实施例的实现复用段双向线性保护倒换的方法的流程图; 图4是本发明提出的复用段双向线性保护倒换1-phase 的APS消息流程示意图; 图5是本发明的1-phase节点设备与3-phase节点设备的对接的APS消息流程示意图。 BRIEF DESCRIPTION OF FIG. 1 is a multiplex section 1: N bidirectional linear protection switching of 3-phase APS message flow diagram; FIG. 2 is a schematic diagram of a node device according to an embodiment of the present invention; Fig. 3 embodiment of the present invention to achieve reuse of cases flowchart segment bidirectional linear protection switching method; Figure 4 is a linear bidirectional multiplex section protection switching 1-phase APS message flow diagram of the present invention is proposed; Figure 5 is a 1-phase node apparatus of the present invention and the 3-phase node docking device of APS message flow diagram. 本发明的较佳实施方式在以太网保护倒换( G.8031 ) 和传送多协议标签交换( Transport Multi-Protocol Label Switching, T-MPLS )线性保护倒换(G.8131 ) 中, 对倒换过程进行了改进, 引入两节点间只需要交互一次协议字节(1-phase )倒换执行过程, 有效地提高了1 :N双向线性保护的倒换效率。 Preferred embodiments of the present invention in Ethernet protection switching (G.8031) and transport Multiprotocol Label Switching (Transport Multi-Protocol Label Switching, T-MPLS) linear protection switching (G.8131), the process of switching the improvements introduced between two nodes only need to interact with a protocol byte (1-phase) switching execution, effectively improving the 1: N bidirectional linear protection switching efficiency. G.8031和G.8131 中是釆用固定方式执行双向线性保护倒换。 G.8031 and G.8131 is Bian perform bidirectional linear protection switching fixed manner. 参考以上的标准规定, 本发明提出在复用段双向1 :N线性保护中也引入1-phase的执行,主要是将phase标识在信令中,向对端表明本端的决策模式, 协商两端的决策模式, 按统一的模式进行保护决策。 Refer to the above standard, the present invention proposes in MSP bidirectional 1: N linear protection also introduces perform 1-phase, mainly the phase identified in the signaling, to peer show that the end of the decision-making model, consultations at both ends decision-making model, according to a uniform pattern protection decisions. 同时也考虑对原有处理的对接。 Taking into account the original process of docking. 本文提出的方法也适用于G.873.1规定的光传送网( Optical Transport Network, OTN )线性保护。 The proposed method is also applicable to G.873.1 provisions OTN (Optical Transport Network, OTN) linear protection. 本发明的主要思想是: 复用段1 :N双向线性保护决策釆用1-phase方法, 本节点计算出保护组内优先级最高的桥接请求后, 则直接完成该最大请求对应业务的桥接和倒换, 并向对端发送该请求, 对端接收到请求后, 如果确认是最大请求, 也相应完成桥接倒换, 此时业务恢复。 The main idea of the present invention are: multiplex section 1: N bidirectional linear protection decision preclude the use of 1-phase method, after the local node is calculated within a protection group with the highest priority bridge request, directly to complete the largest request the corresponding service bridging and switching, and sends the request to the end, after the termination of the receipt of the request, if it is confirmed is the largest request accordingly complete bridging switching, this time business recovery.

复用段开销K2字节的b6-b8, 现有标准定义如下: 000空001-101预留110 MS-RDI (复用段远端缺陷指示) Multiplex section overhead K2 byte b6-b8, existing standards are defined as follows: 000 Empty 001-101 reserved 110 MS-RDI (re Section Remote Defect Indication)

111 MS-AIS (复用段告警指示信号) 本发明将使用其中的预留字节来协商指示两端的phase模式(决策模式) , 并根据匹配情况执行相应的决策。 111 MS-AIS (Multiplex Section Alarm Indication Signal) of the present invention which will be used to negotiate the reserved byte indicating phase mode (decision mode) at both ends, and executes the corresponding decisions based on a mismatch.

下面将结合附图及具体实施例对本发明技术方案的实施作进一步详细说明。 Below in conjunction with the accompanying drawings and specific embodiments of the present embodiment, an invention described in further detail. 需要说明的是, 在不冲突的情况下, 本发明的实施例以及实施例中的特征可以任意相互组合。 It notes that, in the case of no conflict, embodiments and examples of the features of the invention can be arbitrarily combined with each other. 目前在分组传送网( Packet Transport Network, PTN )设备中接入侧的复用段保护(Multiplex Section Protection, MSP )上应用了本发明方法来提高保护倒换效率。 Currently PTN (Packet Transport Network, PTN) equipment in the access side multiplexing section protection (Multiplex Section Protection, MSP) on the application of the method of the present invention to improve the protection switching efficiency. 本发明一实施例的节点设备的示意图, 如图2所示。 A schematic view of a node apparatus according to the embodiment of the present invention, as shown in Figure 2. 本发明在复用段开销K2字节的b6-b8, 增加定义如下: In the present invention, the multiplex section overhead K2 byte b6-b8, the increase is defined as follows:

001 1 -phase 011 3 -phase 建立的复用段1: 1双向保护组包括线卡A和B的STM端口#A-1和# B-1 , 其中#A-1为工作端口, # B-1为保护端口, 1 :N双向保护组包括N个工作端口和1个保护端口, 1 :N只能同时保护一条工作通道, N个工作通道共享一条保护通道, 所以一般根据优先级来确定保护哪个工作通道的业务。 001 1 -phase 011 3 -phase established multiplex section 1: 1 bidirectional protection group include line cards A and B of the STM port # A-1 and # B-1, where # A-1 for the working port, # B- 1 to protect the port, 1: N protection group includes N-way working port and a port protection, 1: N protection only while a working channel, N working channels share a protected channel, it is generally determined based on the priority protection which working channel business. 线卡A检测#A-1端口的告警信息、线卡B检测# B-1端口的告警信息及接收到的Kl、 K2字节,通过板间通讯模块送往主控板的APS决策模块, APS 决策模块还接收网管设备对本节点设备的保护组下发的倒换控制命令, 用户可设置复用段1 :Ν双向的决策方式等。 A line card # A-1 detection alarm port line card B # B-1 port detection alarms and received Kl, K2 bytes sent to the MPU APS decision module through the inter-board communication module, APS decision module also receives a network management device for protection under this group made of switching node device control commands, the user can set the multiplex section 1: Ν bidirectional decision-making and so on. 用户在配置某端设备的复用段保护组时, 可指明该保护组的决策方式釆用1 -phase, 还是3-phase, 这样, 该端设备在保护组发送的K2字节中b6-b8 将填上对应的值。 When configuring MSP group a client device may specify the manner of the protection group decision preclude the use of 1 -phase, or 3-phase, so, K2 bytes of the terminal device in the protection group sent b6-b8 We will fill in the corresponding value.

图3为本发明实施例的实现复用段双向线性保护倒换的方法的流程图, 如图3所示, 包括下面步骤: 3 is an example of a flow chart to achieve complex protection switching method using bidirectional linear segment embodiment, shown in Figure 3, comprising the following steps:

S10、 节点设备根据告警信息或接收K字节或倒换控制等激励作用的端口, 查找得到配置的复用段保护组标识(ID ) ; 节点设备接收到告警信息、倒换控制信息, 则向APS模块发起本地桥接请求,也可以是直接将这些信息输入给APS模块, APS模块当成本地桥接请求处理。 Port S10, node device according to the alarm information or to receive K byte or switching control incentives, find get configured MSP group identifier (ID); the node device to receive alarms, switching control information, the APS module initiate local bridge request, it can be directly input this information to the APS module, APS request processing module as a local bridge. S20、 本节点设备比较保护组内本地请求和/或远端请求, 计算出保护组内优先级最高的最大请求及请求的业务编号; 从对端发送过来的信令中提取出对端的请求即为远端请求, 本地最大请求是本地保护组内所有工作通道和保护通道的桥接请求中优先级最高的桥接请求。 S20, node device in this comparative group of local protection request and / or remote request, calculated within the protective group with the highest priority service request and the maximum number of requests; extracted from the request for end to end signaling that is sent from the the remote request, the request is a local maximum in the local protection group with all the working channel and protection channel bridge request the highest priority bridge request. 本地最大请求是当本地某通道的桥接请求发生变化就应计算出来(即通过本地保护组内各通道的告警信息、 倒换控制信息的优先级比较产生) , 而远端请求则是接收到对端信令时从复用段中提取出的, 这个过程具体可参见G.8131。 Local maximum request when a local bridge channel change request should be calculated (ie, through local protection group alarms within each channel, switching control priority comparison yields information), while the distal end request is received by the peer multiplex extracted with segments from a signaling out, this process can be found in the specific G.8131. 确定优先级最高的请求, 才能保证两端对该请求所在的通道进行一致的桥接倒换。 Determine the highest priority request, in order to ensure both ends of the channel where the request was consistent bridging switching. 如果最高请求是本地请求,则该请求通过请求对应的信令(如SD、 SF等)告之对端; 如果是远端请求, 则发送的信令是RR (反向请求, 表示是一个确认请求) 。 If the request is the highest local requests, the request by signaling (such as SD, SF, etc.) corresponding to the request peer advertised; if it is distal request signaling is transmitted is RR (reverse request represents a confirmation request).

S30、 根据接收到的K2指示的决策模式, 进行桥接倒换; 判断接收到的K2的信息, 即b6-b8 ,从K2中提取对端的决策模式信息, 如果接收K2的b6-b8为011时, 保存决策模式(mode )为3-phase, 按标准的3-phase执行决策(略) , 且发送K2的b6-b8填写011 , 指示3-phase, 结束; S30, according to the decision-making model received K2 indicated bridging switching; K2 information to determine received, namely b6-b8, extract decision-making model of the peer from K2, if the received K2 the b6-b8 to 011, decision save mode (mode) of 3-phase, 3-phase standard of the Executive decision (slightly), K2 and send the b6-b8 fill 011, indicating that 3-phase, end;

如果网管设置复用段1 :N 双向的决策模式为1 -phase, 节点设备( APS 决策模块)若判断网管设置的决策模式与本节点当前运行的决策模式不同, 则上报决策模式不匹配信息到网管设备, 是为了给客户的一种提示, 类似告警提示, 结束。 If the network is set Multiplex Section 1: N bidirectional Decision mode 1 -phase, node device (APS decision module) if the judgment of the decision-making model and network settings of the node currently running different modes of decision-making, decision-making model does not match the reported information to network equipment, is a reminder to customers, similar to a message, asking end. 若接收K2指示1-phase,保存执行方式mode为1-phase,转向步骤S40。 Upon receiving the K2 indication 1-phase, saving mode of implementation of 1-phase, to step S40. 若接收K2指示其他值, 判断本端设置的情况, 如果设备为3-phase, 按标准的3-phase执行决策(略) , 否则转向步骤S40。 Upon receiving the K2 indicates other values, judgment of this end set if the device is 3-phase, 3-phase standard of the Executive Decision (omitted), otherwise to step S40.

S40、 执行优先级最大的请求指示的业务编号的桥接和倒换。 S40, execution priority request indication largest number of bridging and switching business. 如果最大请求为远端请求, 转S50; 否则, 发送协议字节内容为: 请求类型为最大请求, 请求业务编号和已桥接业务编号都为最大请求指示的业务编号, K2中b6-b8指示1-phase, 结束; If the maximum request for a remote request, transfer S50; otherwise, send byte protocol reads: request type to the maximum request with the business number and business number are bridged request indication of the maximum number of business, K2 in b6-b8 indication 1 -phase, end;

S50、 发送协议字节内容为: 请求类型为RR (反向请求) , 请求业务编号和已桥接业务编号都为最大请求指示的业务编号, K2 中b6-b8 指示1-phase, 结束。 S50, send byte protocol reads: request type RR (reverse request), the request service IDs and bridges are the largest number of business service request indication number, K2 in b6-b8 indicates 1-phase, end. 如果管理平面设置复用段1 :N双向的决策模式为3-phase,节点若判断网管设置的决策方式与本地存储的决策方式不同, 则上报决策模式不匹配信息到网管设备, 是为了给客户的一种提示, 类似告警提示, 结束。 If the management plane set Multiplex Section 1: N bidirectional decision-making model is 3-phase, node if a different decision-making decision-making judgment NMS provided locally stored, then submitted to the decision-making model does not match the information to the network management equipment, is to give the customer a prompt similar warning prompt to end. 完成决策后,通过板间通讯模块将桥接倒换决策结果传递给线卡A和线卡B执行, 发送Kl、 Κ2传递给线卡Β通过保护端口发送出去。 After the decision, through inter-plate communication module bridging switching decision result to the A line card and line card B, the transmitting Kl, Κ2 passed to the line card Β sent through the port protection.

以上处理的S50, 1-phase过程发送是否为RR是没有关系的, 因为两端已完成桥接倒换, 仍发送RR, 主要是考虑到与运行标准协议的SDH设备对接时, 保证APS协议仍能正常运行, 而其它规定只使用1-phase的标准规定最后发送的是NR。 S50 above process, 1-phase process of sending whether RR is irrelevant, since both ends of the bridge has been completed switchover still send RR, mainly on account when running standard protocols SDH equipment docking, the APS protocol can still ensure normal run, while others only require the use of standard 1-phase is the last transmitted NR.

引入本方法可有效弥补下述问题对倒换时间的影响: 1、板间通讯模块的传输效率低; 2、 主控上APS决策模块决策执行效率低; 3、 线卡执行动作的执行效率低。 The introduction of this method can effectively compensate for the following issues switching time: 1 transmission efficiency between the lower plate of the communication module; 2, master low efficiency APS decision block decisions; 3, low efficiency line card to perform the action. 业务的倒换时间与上述几个都是有关系的, 当减少交互次数后, 相应对其他部分的要求可适度降低。 Switching time business relationship with all of the above a few, while reducing the number of interactions, the corresponding portion of the other requirements can be appropriately reduced.

图4是本发明提出的复用段双向线性保护倒换1-phase 的APS消息流程示意图, 该流程中, 左、 右端节点设备至少一个设备设置为1-phase模式, 在两端节点设备握手的过程中, 或保护倒换的过程中发送的K2 中的b6-b8 指示1-phase, 保护倒换过程如下: 最初节点设备两端都发送NR0,0的信令; 当左端节点设备检测到信号2劣化时, 并计算出信号2的SD桥接请求的优先级最高, 则完成桥接倒换, 故发送SD2,2 (请求对端桥接信号2 ) ; 右端节点设备若确认信号2的桥接请求优先级最高, 也完成信号2的桥接倒换, 发送RR2,2。 Figure 4 is a bi-directional linear multiplex section protection switching of the present invention provides 1-phase APS message flow diagram of the process, the left and right ends of the at least one device node device is set to 1-phase mode, the nodes at both ends of the device handshake process , or in the process of protection switching K2 sent the b6-b8 indicates 1-phase, protection switching process is as follows: initial nodes at both ends of the signaling device sends NR0,0; when the left node device detects a signal deterioration 2 and calculate the signal SD 2 bridge request with the highest priority is to complete the bridge switching, sends SD2,2 (request for bridging end signal 2); the right end of the bridge acknowledgment signal if the node device 2 requests the highest priority, and also completed 2 switching signal bridge, sending RR2,2. 后面过程处理类似。 Follow the procedure to deal with similar.

由上面可见, 通过发送SD2,2即完成了两端的桥接倒换, 倒换执行过程得到了简化, 同时, APS信令的传递次数减少了,对应耗费的时间也减少了, 倒换效率相应得到了提高。 It is seen from the above, by sending SD2,2 to complete the bridge switching at both ends of the implementation process of switching is simplified, while the number of transfers APS signaling is reduced, corresponding to the time-consuming also reduced, switching efficiency is improved accordingly.

图5是本发明的1-phase节点设备与3-phase节点设备的对接的APS消息流程示意图,假设左端节点设备设置为1-phase, 右端节点设备设置为现有的节点设备(现有的节点设备都是按3-phase执行, 不会从K2检测phase和发送phase方式) , 保护倒换过程如下: 最初两端都发送NR0,0的信令; 当左端节点设备(按1-phase执行, 因为接收K2字节没有指示模式, 故仍按1-phase执行)检测到信号2劣化( SD ) 时, 并且计算出信号2的SD 桥接请求的优先级最高, 则完成桥接倒换, 故发送SD2,2 (请求对端桥接信号2 ) ; 右端节点设备(因为是老设备, 不会判断K2指示的决策模式, 而是按正常的3-phase处理,收到的K1K2是SD2,2,表示左端请求右端桥接信号2, 同时左端已完成信号2桥接, 那么本端就可以完成信号2的桥接倒换了)确认信号2的桥接请求优先级最高, 也完成信号2的桥接倒换, 发送RR2,2。 Figure 5 is a schematic flow diagram of APS message node 1-phase docking apparatus of the present invention with the 3-phase node device, the node device is assumed to the left 1-phase, the right end of the node device to an existing node device (node existing press the 3-phase devices are implemented, not from K2 detection phase and transmit phase mode), protection switching process is as follows: initially send both ends NR0,0 signaling; when the left node device (press 1-phase execution, because received K2 byte mode is not instructed, it is based upon the 1-phase execution) 2 detection signal degradation (SD) time to, and calculates the signal SD 2 bridge request with the highest priority is to complete the bridge switching, it sends SD2,2 (request for bridging end signal 2); the right end node devices (because the old equipment can not judge the decision-making mode indicated by K2, but according to the normal 3-phase process, K1K2 received was SD2,2, showing left right request bridged signal 2, while the left has 2 complete signal bridge, then this can be completed end of switching the signal bridge 2) 2 bridge acknowledgment signal request the highest priority, and also completed the bridging of the switching signal 2 sent RR2,2.

当右端节点设备检测到信号3失效( SF ) , 并计算信号3的SF桥接请求的优先级最高, 则撤消信号2的倒换, 发送SF3,2; 左端节点设备撤消信号2的桥接倒换, 并完成信号3的桥接倒换, 发送RR3,3; 右端节点设备完成信号3的桥接倒换, 发送SF3,3; 后面过程处理类似。 When the device detects the right end node 3 signal failure (SF), and calculates the highest priority request signal SF bridge 3, the signal switching undo 2, the transmission SF3,2; left undone signal bridge switching node apparatus 2, and complete 3 switching signal bridge, sending RR3,3; right node equipment to complete the signal switching bridge 3, sending SF3,3; later during the processing similar.

本发明的设备可很好地与原有设备兼容, 不存在对接的问题。 Apparatus of the present invention can be well compatible with existing equipment, docking problem does not exist. 且整个过程最多退化为两次握手就完成桥接倒换, 故也没有对倒换效率带来影响。 And the entire process may take up to two-way handshake is complete degenerate switching bridge, so there is no impact on switching efficiency.

3-phase侧指不釆用本发明的节点按默认3-phase方式执行, 1 -phase侧指釆用本发明的节点按1-phase方式执行如图5所示, 当请求由3-phase侧发起时, 整个过程退化为2-phase (两节点间交互两次协议字节)执行, 而如果请求由1-phase 侧发起, 仍是按1-phase执行的。 3-phase side of the press means not preclude the default 3-phase manner with a node of the present invention, 1 -phase side refers to preclude press 1-phase manner shown in Figure 5 with the node of the present invention, when requested by a 3-phase side when launched, the entire process is reduced to 2-phase (between two nodes interact twice protocol bytes) executed, and if the request is initiated by 1-phase side, still according to 1-phase execution. 如果B点按3-phase执行, 当最后收到NR, 而不是RR时, 会造成B点可能无法完成倒换(NR请求原先只用于指示当前无请求, 请求信号编号为0或额外业务编号) 。 If point B by 3-phase execution, when the last received NR, rather than RR, will result in point B may not be able to complete the switchover (NR request was originally only used to indicate that no current request, the request signal number is zero or additional business ID) .

本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读存储器、 磁盘或光盘等。 Those of ordinary skill will be appreciated that the above method may be all or part of the steps by a program instructing related hardware, the program may be stored in a computer-readable storage medium, such as read only memory, magnetic or optical disk. 可选地, 上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。 Alternatively, all or part of the steps of the above embodiments may have one or more integrated circuits. 相应地, 上述实施例中的各模块可以釆用硬件的形式实现, 也可以釆用软件功能模块的形式实现。 Accordingly, the above embodiments may preclude the use of the modules implemented in the form of hardware, it can also preclude the use of the form of software function module. 本发明不限制于任何特定形式的硬件和软件的结合。 The present invention is not limited to any particular form of combination of hardware and software.

以上仅为本发明的优选实施例, 当然, 本发明还可有其他多种实施例, 在不背离本发明精神及其实质的情况下, 熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形, 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 The above is only a preferred embodiment of the present invention, of course, the present invention may have many other embodiments without departing from the spirit and essence of the invention, those skilled in the art when the present invention may be made in accordance with appropriate changes and modifications, but these should be corresponding changes and modifications within the scope of protection of the present invention, the appended claims.

工业实用性本发明提供了一种实现复用段双向线性保护倒换的方法及节点设备, 将倒换过程中协议字节的三次交互减少为一次交互, 相应地决策等处理也只有一次, 可大大提高复用段1 :N双向线性保护的倒换效率, 从而弥补其它处理单元的不足, 具体地来说, 执行复用段保护决策得到了优化, 那么相应将减少对其他处理单元的要求。 Industrial Applicability The present invention provides a method and implement complex protection switching node device using two-way linear segments, the three-byte protocol interaction switching process is reduced to one interaction, corresponding decision-making process only once, can greatly improve multiplex section 1: N bidirectional linear protection switching efficiency to compensate for the lack of other processing units, specifically, the implementation of MSP decision has been optimized, then the corresponding processing units will be reduced to other requirements. 例如, 倒换效率提高后, 相应可以降低对快速检测告警的要求, 通常快速检测告警由硬件完成, 如此相对可以降低对硬件的一些参数要求。 For example, after switching efficiency, can be reduced to the corresponding requirements of rapid detection of an alarm, the alarm is usually rapid detection performed by hardware, so hardware can be reduced relative to a number of parameters. 同时, 通告phase模式也增强了可控性。 Meanwhile, the announcement phase mode also enhances controllability.

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Classifications
International ClassificationH04J14/02
Cooperative ClassificationH04J2203/006, H04J3/14
European ClassificationH04J3/14
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