WO2011157162A2 - 一种保护倒换方法及装置 - Google Patents
一种保护倒换方法及装置 Download PDFInfo
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- WO2011157162A2 WO2011157162A2 PCT/CN2011/075118 CN2011075118W WO2011157162A2 WO 2011157162 A2 WO2011157162 A2 WO 2011157162A2 CN 2011075118 W CN2011075118 W CN 2011075118W WO 2011157162 A2 WO2011157162 A2 WO 2011157162A2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0062—Provisions for network management
- H04Q3/0075—Fault management techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/15—Interconnection of switching modules
- H04L49/1515—Non-blocking multistage, e.g. Clos
- H04L49/1523—Parallel switch fabric planes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/55—Prevention, detection or correction of errors
- H04L49/552—Prevention, detection or correction of errors by ensuring the integrity of packets received through redundant connections
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a protection switching method and apparatus.
- the existing protection switching method is as shown in FIG. 1.
- the main line optical board A transmits service information to the line light board C through the service channel
- the line light board B is the standby switching board corresponding to the main line light board A, when the line light board A and the cross board 3
- the cross-connect board 3 switches the output port to the service from the line board B. That is, the cross board 3 selects the service information of the line board B, but the cross board 1, the cross board 2, and the cross board 4.
- the cross board N still selects the service information of the line board A.
- the service information part comes from the main line board A, and part comes from the line board B. Since the service information is delayed by different line boards, the delay is different.
- an alarm of service interruption occurs, which causes the interruption of service information transmission.
- the embodiment of the present invention provides a protection switching method and device, so that the cross-boards can complete the protection switching, ensuring that the service information can be correctly transmitted after the cross-board protection switching, and the service information transmission interruption is avoided.
- the embodiment of the invention provides a protection switching method, including:
- the status information including status information of the service channel and status information of the protection channel;
- each cross-board switch selects the same service channel or protection channel to transmit service information.
- the embodiment of the invention further provides a protection switching device, comprising:
- a receiving unit configured to receive status information reported on each cross-board, where the status information includes status information of the service channel and status information of the protection channel;
- the control unit is configured to: when the status information reported on each cross-board is abnormal, each cross-board switch selects the same service channel or protection channel to transmit service information.
- the embodiment of the invention provides a protection switching method and device, and completes the protection switching according to the state information reported on the cross-board, ensuring that the service information can be correctly transmitted after the protection of the cross-board protection, thereby avoiding interruption of service information transmission and ensuring each Synchronization of business information between the cross boards.
- FIG. 1 is a schematic cross-sectional view of a protection switching method in the prior art
- FIG. 2 is a schematic flowchart of a protection switching method according to an embodiment of the present invention.
- FIG. 3 is a schematic flowchart diagram of still another protection switching method according to an embodiment of the present disclosure.
- FIG. 4 is a schematic structural diagram of a protection switching device according to an embodiment of the present invention.
- the present invention provides a protection switching method, as shown in FIG. 2, including:
- the status information of the service channel includes a normal or faulty connection of the main line optical board to the cross board, and a normal, degraded or failed signal of the main line optical board;
- the status information of the protection channel includes a connection of the standby line optical board to the cross board. Normal or faulty and the signal of the standby line light board is normal, degraded or invalid.
- each cross-board switch selects the same service channel or protection channel to transmit service information.
- the cross-boards are selected according to the pre-configuration to select the channel being used for service information transmission or switch to the service channel for service information transmission; If the service channel status information reported on the at least one cross-board is faulty or degraded or invalid, but the status information of the protection channel is normal, the cross-board is controlled according to the status information to select the same protection channel for service information transmission; If the status information of the service channel is normal, but the status information of the protection channel is faulty or degraded or invalid, each cross-board is controlled according to the status information to select the same service channel for service information transmission.
- the service mode of the cross-board service is to transmit the service information to the line light board C through the service channel, and the line light board B is the standby switch board corresponding to the main line light board A.
- the present invention describes the service protection method of the cross-board when the link between the line optical board A and the cross-board 3 fails. As shown in FIG. 3, the method includes:
- each cross board is uniformly switched to the protection channel where the line light board B is located to transmit service information. This ensures that the services of the cross-boards are all from the same line optical board.
- the delay difference caused by the unified switching is very small, which belongs to the buffer absorbing range of the cross-board, so it does not cause the alarm of the service interruption of the line optical board C.
- each cross board is uniformly switched to the protection channel where the faultless line light board B is located to transmit the service information.
- the cross-boards are controlled to be uniformly switched to the service channel where the faultless line optical board A is located according to the status information reported on each cross-board to transmit service information.
- the service information transmitted on the line board A and the line board B is the same.
- the embodiment of the invention further provides a protection switching device, as described in FIG. 4, comprising:
- the receiving unit 41 is configured to receive status information reported on each cross-board, where the status information includes status information of the service channel and status information of the protection channel.
- the status information of the service channel includes normal or faulty connection of the main line optical board to the cross board, and normal, degraded or failed signals of the main line optical board; status information of the protection channel in the receiving unit includes the spare line optical board to the The connection of the cross board is normal or faulty and the signal of the standby line light board is normal, degraded or invalid.
- the control unit 42 is configured to control, according to the status information reported on each cross-board received by the receiving unit 41, each cross-board to select the same service channel or protection channel to perform service information transmission.
- each cross-board switch selects the same service channel or protection channel to perform service information transmission.
- the cross-boards are selected according to the pre-configuration to select the channel being used for service information transmission or handover to the service channel for service information transmission. If the service channel status information reported on the at least one cross-board is faulty or degraded or invalid, but the status information of the protection channel is normal, the cross-board is controlled according to the status information to select the same protection channel for service information transmission; If the service channel status information reported on the board is normal, but the status information of the protection channel is faulty or degraded or invalid, each cross-board is controlled to select the same service channel to transmit service information according to the status information.
- each of the cross-boards has its own board software, the service information transmission status of each of the cross-boards to other boards is unclear, and the existing protection switching cannot achieve unified switching, and the present invention provides
- the service protection device of the cross-board completes the protection switching according to the status information reported on the cross-board, ensuring the synchronization of the service information between the cross-boards to achieve unified switching of the cross-boards, ensuring that the cross-board protection switching can still be correctly transmitted.
- Business information avoids the interruption of the delivery of business information.
- the included units are only divided according to functional logic, but are not limited to the foregoing division, as long as the corresponding functions can be implemented; in addition, the specific names of the functional units It is also for convenience of distinguishing from each other and is not intended to limit the scope of protection of the present invention.
- the storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
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- Mobile Radio Communication Systems (AREA)
Abstract
本发明公开了一种保护倒换方法及装置，涉及通信技术领域。本发明实施例首先，接收各交叉板上报的状态信息，所述状态信息包括业务通道的状态信息和保护通道的状态信息；然后，当所述各交叉板上报的状态信息异常时，各交叉板切换选择同一业务通道或保护通道进行业务信息的传递。本发明实施例根据交叉板上报的状态信息统一完成保护倒换，确保了交叉板保护倒换后仍能正确传递业务信息，避免了业务信息传递中断，保证了各交叉板之间业务信息的同
Description
技术领域
本发明涉及通信技术领域，尤其涉及一种保护倒换方法及装置。
发明背景
随着光纤通信技术的高速发展，网络容量越来越大，一根光纤中汇聚了成千上万用户的信息，一旦光纤出现故障，就会造成很大影响，给运营商造成巨大的经济损失，因此要求设备具有良好的自愈能力。SDH（Synchronous
Digital
Hierarchy，同步数字体系）的标准之所以被通信行业广泛接受，其主要原因是它具有自保护倒换功能，一旦工作通道失效，能自动切换到保护通道工作，大大提高了网络的安全性。
现有的保护倒换方法如图1所示，主线路光板A通过业务通道传递业务信息给线路光板C，线路光板B为主线路光板A对应的备用倒换光板，当线路光板A与交叉板3之间的链路发生故障时，交叉板3会将输出端口切换到来自线路光板B的业务上去，即交叉板3选择的是线路光板B的业务信息，但交叉板1、交叉板2、交叉板4、……交叉板N选择的仍然是线路光板A的业务信息，此时业务信息部分来自主线路光板A，部分来自线路光板B，由于业务信息经由不同的线路光板的线路延时不同，故此时线路光板C会出现业务中断的告警，导致业务信息传递中断。
发明内容
本发明实施例提供了一种保护倒换方法及装置，使各交叉板统一完成保护倒换，确保了交叉板保护倒换后仍能正确传递业务信息，避免了业务信息传递中断。
本发明实施例提供了一种保护倒换方法，包括：
接收各交叉板上报的状态信息，所述状态信息包括业务通道的状态信息和保护通道的状态信息；
当所述各交叉板上报的状态信息异常时，各交叉板切换选择同一业务通道或保护通道进行业务信息的传递。
本发明实施例还提供一种保护倒换装置，包括：
接收单元，用于接收各交叉板上报的状态信息，所述状态信息包括业务通道的状态信息和保护通道的状态信息；
控制单元，用于当所述各交叉板上报的状态信息异常时，各交叉板切换选择同一业务通道或保护通道进行业务信息的传递。
本发明实施例提供了一种保护倒换方法及装置，根据交叉板上报的状态信息统一完成保护倒换，确保了交叉板保护倒换后仍能正确传递业务信息，避免了业务信息传递中断，保证了各交叉板之间业务信息的同步性。
附图简要说明
图1为现有技术中保护倒换方法的交叉结构示意图；
图2为本发明实施例提供的一种保护倒换方法的流程示意图；
图3为本发明实施例提供的又一种保护倒换方法的流程示意图；
图4为本发明实施例提供了一种保护倒换装置的结构示意图。
实施本发明的方式
本发明提供了一种保护倒换方法，如图2所示，包括：
21、接收各交叉板上报的状态信息，所述状态信息包括业务通道的状态信息和保护通道的状态信息。
具体地，业务通道的状态信息包括主线路光板到所述交叉板的连接正常或故障以及主线路光板的信号正常、劣化或失效；保护通道的状态信息包括备用线路光板到所述交叉板的连接正常或故障以及备用线路光板的信号正常、劣化或失效。
22、根据每个交叉板上报的所述状态信息控制各交叉板选择同一业务通道或保护通道进行业务信息的传递。
可选的，当所述各交叉板上报的状态信息异常时，各交叉板切换选择同一业务通道或保护通道进行业务信息的传递。
进一步，若各交叉板上报的业务通道和保护通道的状态信息均为正常，则按照预先的配置控制各交叉板选择正在使用的通道进行业务信息的传递或切换到业务通道进行业务信息的传递；若至少一个交叉板上报的业务通道状态信息为故障或劣化或失效，但保护通道的状态信息为正常，则根据所述状态信息控制各交叉板选择同一保护通道进行业务信息的传递；若交叉板上报的业务通道状态信息为正常，但保护通道的状态信息为故障或劣化或失效，则根据所述状态信息控制各交叉板选择同一业务通道进行业务信息的传递。
以如图1所示的交叉结构为例，其中交叉板的业务保护方法主线路光板A通过业务通道传递业务信息给线路光板C，线路光板B为主线路光板A对应的备用倒换光板，本发明实施例介绍当线路光板A与交叉板3之间的链路发生故障时交叉板的业务保护方法如图3所示，包括：
31、接收各交叉板上报的状态信息，其中交叉板3上报的状态信息为主线路光板A到交叉板3的连接故障，其它交叉板上报的状态信息均为正常。
32、根据每个交叉板上报的所述状态信息控制各交叉板统一切换到线路光板B所在的保护通道进行业务信息的传递。这样保证了各交叉板的业务均来自同一个线路光板，由于统一切换导致的延时差值非常小，属于交叉板的缓存可吸收的范围，所以不会导致线路光板C发出业务中断的告警。
同理，当线路光板A故障时，根据每个交叉板上报的状态信息控制各交叉板统一切换到无故障的线路光板B所在的保护通道进行业务信息的传递。当线路光板B故障时，也会根据每个交叉板上报的状态信息控制各交叉板统一切换到无故障的线路光板A所在的业务通道进行业务信息的传递。上述线路光板A和线路光板B上所传递的业务信息是相同的。
上述实施例当业务通道的线路光板故障，或业务通道的线路光板与交叉板之间的链路故障，或保护通道的线路光板故障，或保护通道的线路光板与交叉板之间的链路故障时，所有的交叉板都会根据上述状态信息同时切换到同一个线路光板上，即所有交叉板同时选择来自一个线路光板的业务，此时导致的路径延时差值非常小，属于交叉板的缓存可吸收的范围，故不会对业务信息的传递造成影响。
本发明实施例还提供了一种保护倒换装置，如图4所述，包括：
接收单元41，用于接收各交叉板上报的状态信息，所述状态信息包括业务通道的状态信息和保护通道的状态信息。
具体地，业务通道的状态信息包括主线路光板到所述交叉板的连接正常或故障以及主线路光板的信号正常、劣化或失效；所述接收单元中保护通道的状态信息包括备用线路光板到所述交叉板的连接正常或故障以及备用线路光板的信号正常、劣化或失效。
控制单元42，用于根据接收单元41接收到的每个交叉板上报的所述状态信息控制各交叉板选择同一业务通道或保护通道进行业务信息的传递。
可选的，当接收单元41接收到的各交叉板上报的状态信息异常时，各交叉板切换选择同一业务通道或保护通道进行业务信息的传递。
具体地，若各交叉板上报的业务通道和保护通道的状态信息均为正常，则按照预先的配置控制各交叉板选择正在使用的通道进行业务信息的传递或切换到业务通道进行业务信息的传递；若至少一个交叉板上报的业务通道状态信息为故障或劣化或失效，但保护通道的状态信息为正常，则根据所述状态信息控制各交叉板选择同一保护通道进行业务信息的传递；若交叉板上报的业务通道状态信息为正常，但保护通道的状态信息为故障或劣化或失效，则根据所述状态信息控制各交叉板选择同一业务通道进行业务信息的传递。
由于每块交叉板都有各自的单板软件，故每块交叉板对其它单板的业务信息传递状况是不清楚的，造成现有的保护倒换无法实现统一切换，而本发明实施例提供的交叉板的业务保护装置，根据交叉板上报的状态信息统一完成保护倒换，保证了各交叉板之间业务信息的同步性实现了交叉板的统一切换，确保了交叉板保护倒换后仍能正确传递业务信息，避免了业务信息的传递中断。
值得注意的是，上述装置实施例中，所包括的各个单元只是按照功能逻辑进行划分的，但并不局限于上述的划分，只要能够实现相应的功能即可；另外，各功能单元的具体名称也只是为了便于相互区分，并不用于限制本发明的保护范围。
另外，本领域普通技术人员可以理解实现上述各方法实施例中的全部或部分步骤是可以通过程序来指令相关的硬件完成，相应的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。
Claims (8)
- 一种保护倒换方法，其特征在于，包括：接收各交叉板上报的状态信息，所述状态信息包括业务通道的状态信息和保护通道的状态信息；当所述各交叉板上报的状态信息异常时，各交叉板切换选择同一业务通道或保护通道进行业务信息的传递。
- 根据权利要求1所述的保护倒换方法，其特征在于，所述业务通道的状态信息包括主线路光板到所述交叉板的连接正常或故障以及主线路光板的信号正常、劣化或失效；所述保护通道的状态信息包括备用线路光板到所述交叉板的连接正常或故障以及备用线路光板的信号正常、劣化或失效。
- 根据权利要求2所述的保护倒换方法，其特征在于，所述各交叉板上报的状态信息异常包括：至少一个交叉板上报的业务通道状态信息为故障或劣化或失效，所述各交叉板切换选择同一业务通道或保护通道进行业务信息的传递包括：若至少一个交叉板上报的业务通道状态信息为故障或劣化或失效，但保护通道的状态信息为正常，则根据所述状态信息控制各交叉板选择同一保护通道进行业务信息的传递。
- 根据权利要求3所述的保护倒换方法，其特征在于，所述各交叉板上报的状态信息异常还包括：交叉板上报的业务通道状态信息为正常，但保护通道的状态信息为故障或劣化或失效，所述各交叉板切换选择同一业务通道或保护通道进行业务信息的传递还包括：若交叉板上报的业务通道状态信息为正常，但保护通道的状态信息为故障或劣化或失效，则根据所述状态信息控制各交叉板选择同一业务通道进行业务信息的传递。
- 一种保护倒换装置，其特征在于，包括：接收单元，用于接收各交叉板上报的状态信息，所述状态信息包括业务通道的状态信息和保护通道的状态信息；控制单元，用于当所述接收单元接收到的所述各交叉板上报的状态信息异常时，各交叉板切换选择同一业务通道或保护通道进行业务信息的传递。
- 根据权利要求5所述的保护倒换装置，其特征在于，所述接收单元中业务通道的状态信息包括主线路光板到所述交叉板的连接正常或故障以及主线路光板的信号正常、劣化或失效；所述接收单元中保护通道的状态信息包括备用线路光板到所述交叉板的连接正常或故障以及备用线路光板的信号正常、劣化或失效。
- 根据权利要求6所述的保护倒换装置，其特征在于，所述控制单元，用于若至少一个交叉板上报的业务通道状态信息为故障或劣化或失效，但保护通道的状态信息为正常，则根据所述状态信息控制各交叉板选择同一保护通道进行业务信息的传递。
- 根据权利要求7所述的保护倒换装置，其特征在于，所述控制单元，还用于若交叉板上报的业务通道状态信息为正常，但保护通道的状态信息为故障或劣化或失效，则根据所述状态信息控制各交叉板选择同一业务通道进行业务信息的传递。
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| US20070036544A1 (en) * | 2005-07-25 | 2007-02-15 | Yasuyuki Fukashiro | Optical network, node apparatus and method for relieving path fault |
| CN101197651A (zh) * | 2007-12-19 | 2008-06-11 | 华为技术有限公司 | 板间通信的方法、设备、主控板和接口板 |
| CN102045600A (zh) * | 2009-10-22 | 2011-05-04 | 中兴通讯股份有限公司 | 以太网接入sdh光网络的链路保护方法及装置 |
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| US20070036544A1 (en) * | 2005-07-25 | 2007-02-15 | Yasuyuki Fukashiro | Optical network, node apparatus and method for relieving path fault |
| CN101197651A (zh) * | 2007-12-19 | 2008-06-11 | 华为技术有限公司 | 板间通信的方法、设备、主控板和接口板 |
| CN102045600A (zh) * | 2009-10-22 | 2011-05-04 | 中兴通讯股份有限公司 | 以太网接入sdh光网络的链路保护方法及装置 |
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| CN102664702A (zh) * | 2012-04-05 | 2012-09-12 | 烽火通信科技股份有限公司 | 一种交叉盘m比n的保护方式 |
| CN102664702B (zh) * | 2012-04-05 | 2014-12-03 | 烽火通信科技股份有限公司 | 一种交叉盘m比n的保护方式 |
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