WO2016197641A1 - 一种基于otn分组业务无损调整的装置与方法 - Google Patents

一种基于otn分组业务无损调整的装置与方法 Download PDF

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WO2016197641A1
WO2016197641A1 PCT/CN2016/076139 CN2016076139W WO2016197641A1 WO 2016197641 A1 WO2016197641 A1 WO 2016197641A1 CN 2016076139 W CN2016076139 W CN 2016076139W WO 2016197641 A1 WO2016197641 A1 WO 2016197641A1
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oduk
traffic
pipeline
service
otn
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张铮
陈德华
陈松涛
陶雪丽
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Fiberhome Telecommunication Technologies Co Ltd
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  • the present invention relates to the field of optical network communication technologies, and in particular, to an apparatus and method for lossless adjustment based on OTN packet services.
  • optical communication service carried by the traditional OTN Optical Transport Network
  • OTN Optical Transport Network
  • OTUK Optical channel data unit
  • the data unit is pipelined, it is limited by the flow of the ODUK pipeline itself.
  • the traffic of the service will expand with time, and the ODUK pipeline may also grow accordingly.
  • the framing chip of the ODUK pipeline cannot be arbitrarily adjusted to the size of the ODUK pipeline.
  • the adjustment of the pipeline size needs to be implemented by deleting the service, and the time of the service interruption is generally In about 1 second, the transmission requirements of the telecommunications level cannot be met, and there is an adjustment loss.
  • the framing chip is expensive, and can only adjust the ODUK pipeline included in one OTUK large pipeline, and cannot handle any arbitrary OTUK.
  • the ODUK pipeline is less flexible and has limited use.
  • the object of the present invention is to provide an apparatus and method for non-destructive adjustment based on OTN packet service, to avoid adjustment loss, and to adjust any ODUK pipeline of any OTUK of any wavelength in the node switching system, thereby improving flexibility. Sex, Avoid restrictions on use.
  • the present invention adopts a device based on OTN packet service lossless adjustment, comprising: a network management module, configured to allocate a traffic increase module or a traffic reduction module according to the received adjusted service traffic command; and a traffic increase module. Used to allocate the remaining ODUK pipeline resources to each node to establish an ODUK pipeline, or to newly establish an ODUK pipeline at each node; a traffic reduction module for allocating a reduced ODUK pipeline for each node, and deciding to release the reduced ODUK pipeline; Processing module for adding or removing the ODUK pipeline to and from the LAG member group; framing the chip for completing the addition and release of the ODUK pipeline.
  • the network management processing module determines that the command for adjusting the service traffic is received, and if the traffic is increased, the traffic is added to the traffic increase module; if the traffic is reduced, the traffic reduction module is allocated.
  • the traffic increase module calculates whether all routing nodes passing through the service have remaining ODUK pipeline resources, and if so, allocates services to each node to establish an ODUK pipeline, and if not, on the node without the remaining ODUK pipeline. Prompt and provide an alternative deletable business.
  • the framing chip After prompting on the node without the remaining ODUK pipeline, the framing chip establishes an ODUK pipeline at each node, and the packet processing module adds the ODUK pipeline to the LAG member group.
  • the action commands of the ODUK pipeline to join or remove the LGA member group are all transmitted through the overhead bytes of the OTN.
  • the overhead bytes of the OTN are the ODUK layer of the same level, or the ODUK layer of different levels.
  • the invention also provides a method for lossless adjustment based on OTN packet service, comprising the steps of:
  • the network management processing module receives the adjustment service traffic command, it determines whether the service traffic increases or decreases. If it increases, it enters S2; if it decreases, it enters S6;
  • the traffic increase module calculates all routing nodes that the service to be adjusted passes, determines whether each node has enough unused ODUK pipes, and if not, enters S3, and if yes, proceeds to S4;
  • the traffic increase module will list the ODUK pipelines that are not occupied by the nodes that are not using the ODUK pipeline, and delete the occupied ODUK pipeline services;
  • the traffic increase module allocates an ODUK channel to each node, and establishes an empty ODUK channel through the framing chip;
  • the packet processing module adds the newly established ODUK pipeline and the ODUK pipeline to be expanded to the LAG member group, and ends;
  • the traffic reduction module allocates each node with a reduced ODUK pipeline, and the packet processing module moves the reduced ODUK pipeline out of the LAG member group, and the framing chip releases the reduced ODUK pipeline, and ends.
  • the command of the ODUK pipeline to join or remove the LAG member group is transmitted through the overhead byte of the OTN.
  • the overhead bytes of the OTN are the ODUK layer of the same level, or the ODUK layer of different levels.
  • the packet service is a service for data exchange by using a variable length packet as a basic transmission unit, including Ethernet and MPLS.
  • the invention has the beneficial effects of avoiding non-destructive adjustment of the ODUK pipeline in the framing chip, and using the addition and deletion of the LAG member group in the packet processing module to implement non-destructive adjustment of the ODUK pipeline, which can solve the existing service. Expand capacity requirements and reduce the cost of framing chips.
  • the present invention can be used. It is intended to adjust any pipeline within any OTUK large pipeline of any wavelength within a node switching system with great flexibility.
  • the ODUK pipeline time slots can be redistributed, integrated and reused at wavelength and sub-wavelength levels for a wide range of applications.
  • FIG. 1 is a schematic diagram of an apparatus for performing lossless adjustment of an OTN packet service according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for lossless adjustment of an OTN packet service according to an embodiment of the present invention.
  • 1-network management module 2-flow increase module, 3-flow reduction module, 4-packet processing module, 5-framed chip.
  • an apparatus for performing lossless adjustment of an OTN packet service includes a network management module 1, a traffic increase module 2, a traffic reduction module 3, a packet processing module 4, and a framing chip 5, and the network management module 1 respectively.
  • the traffic increase module 2 and the traffic reduction module 3 are connected, and the packet processing module 4 is connected to the traffic increase module 2, the traffic reduction module 3, and the framing chip 5, respectively.
  • the network management module 1 is configured to be processed by the traffic adding module 2 or the traffic reducing module 3 according to the received adjusted traffic flow command. Specifically, if the traffic is increased, the traffic adding module 2 is allocated; if the traffic is reduced, , assigned to the flow reduction module 3 for processing.
  • the traffic increase module 2 is configured to calculate whether there are remaining ODUK pipeline resources for all routing nodes that are to be adjusted, for allocating the remaining ODUK pipeline resources to each node to establish an ODUK pipeline, or newly establishing an ODUK pipeline at each node; , calculate whether all routing nodes passing through the service have remaining ODUK pipe resources Source, if yes, assign the service to each node to establish an ODUK pipeline, and if not, prompt on the node without the remaining ODUK pipeline and provide an alternative deletable service.
  • a flow reduction module that allocates each node with a reduced ODUK pipeline and decides to release the ODUK pipeline that needs to be reduced.
  • the packet processing module is used to add or remove the ODUK pipeline to the LAG member group.
  • the action commands of the ODUK pipeline to join or remove the LGA member group are all passed through the overhead bytes of the OTN. It should be noted that these overhead bytes can be reserved words. Section or other bytes to ensure the synchronization of actions between nodes to meet the signal failure time of the telecommunications level.
  • the overhead bytes of the OTN can be at the same level of the ODUK layer or at different levels of the ODUK layer.
  • a framing chip that is used to complete the addition and release of the ODUK pipeline.
  • the present invention is based on a method for non-destructive adjustment of an OTN packet service, and specifically includes the following steps:
  • the network management processing module 1 When the network management processing module 1 receives the adjustment service traffic command, it determines whether the service traffic increases or decreases. If it increases, it enters S2; if it decreases, it enters S6; meanwhile, it finds all routing nodes that the service passes through.
  • the traffic increase module 2 calculates all the routing nodes that the service to be adjusted passes, determines whether each node has enough unused ODUK pipes, and if so, enters S4, and if not, enters S3.
  • Each node has a remaining ODUK pipe for expansion, and the traffic increase module 2 assigns an ODUK channel to each node, and establishes an empty ODUK through the framing chip 5.
  • the traffic increase module 2 assigns an ODUK channel to each node, and establishes an empty ODUK through the framing chip 5.
  • Channel, at this time, the ODUK channel itself has no services, and will not affect other existing traffic, and enter S5.
  • the packet processing module 4 adds the newly established ODUK pipeline to the LAG member group together with the ODUK pipeline that needs to be expanded, and ends.
  • the transfer of the added action commands between the nodes uses the overhead bytes of the OTN. It should be noted that these overhead bytes can be reserved bytes or other bytes to ensure the synchronization of actions between the nodes. Meet the signal failure time of the telecom level.
  • the traffic reduction module 3 allocates each node with an ODUK pipeline that needs to be reduced; the packet processing module 4 moves the reduced ODUK pipeline out of the LAG member group, and the removed command is also transmitted through the overhead byte of the OTN to satisfy the expiration time; The frame chip 5 releases the reduced ODUK pipe.
  • the packet service of the present invention is a service for data exchange using a variable length packet as a basic transmission unit, including but not limited to Ethernet, MPLS (Multi-Protocol Label Switching), and the like.

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Abstract

一种基于OTN分组业务无损调整的装置与方法，涉及光网络通信技术领域，网管处理模块，用于根据收到的调整业务流量命令，分给流量增加模块或者流量减少模块处理；流量增加模块，用于分配剩余ODUK管道资源到各个节点建立ODUK管道，或者在各个节点新建立ODUK管道；流量减少模块，用于为每个节点分配需要减少的ODUK管道，并决定释放减少的ODUK管道；包处理模块，用于将ODUK管道加入或移出LAG成员组；成帧芯片，用于完成ODUK管道的增加与释放。避免调整损失，在节点交换系统内调整任意波长的任意OTUK的任意ODUK管道，提高灵活性，避免使用受限。

Description

一种基于OTN分组业务无损调整的装置与方法 技术领域
本发明涉及光网络通信技术领域，具体来讲是一种基于OTN分组业务无损调整的装置与方法。
背景技术
传统OTN(Optical Transport Network，光传送网)承载的光通信业务，不管是统计复用的包交换业务，还是电路交换的时分复用业务，在承载到了OTN的ODUK(Optical channel data unit，光通道数据单元)管道时，都受到了ODUK管道本身流量的限制。在当前的网络中，由于统计复用的包交换业务的大规模运用，业务的流量会随着时间的增长而扩大，因而ODUK管道也有可能会随之增长。
但是在现有芯片技术中，建立ODUK管道的成帧芯片并不能随意调整ODUK管道的大小，一般这种管道大小的调整都需要通过删建业务的方式来实现，此时业务中断的时间一般都会在1秒左右，不能满足电信级别的传输需求，存在调整损失。除此之外，即使在标准上ODUK成帧芯片做到无损调整，但是该成帧芯片价格昂贵，并且只能在一个OTUK的大管道中调整其包括的ODUK管道，不能处理任意OTUK之间任意ODUK管道，灵活性较差，使用受到限制。
发明内容
针对现有技术中存在的缺陷，本发明的目的在于提供一种基于OTN分组业务无损调整的装置与方法，避免调整损失，在节点交换系统内调整任意波长的任意OTUK的任意ODUK管道，提高灵活性， 避免使用受限。
为达到以上目的，本发明采取一种基于OTN分组业务无损调整的装置，包括：网管处理模块，用于根据收到的调整业务流量命令，分给流量增加模块或者流量减少模块处理；流量增加模块，用于分配剩余ODUK管道资源到各个节点建立ODUK管道，或者在各个节点新建立ODUK管道；流量减少模块，用于为每个节点分配需要减少的ODUK管道，并决定释放减少的ODUK管道；包处理模块，用于将ODUK管道加入或移出LAG成员组；成帧芯片，用于完成ODUK管道的增加与释放。
在上述技术方案的基础上，网管处理模块判断收到调整业务流量的命令，若为增加业务流量，分配给流量增加模块处理；若为减少业务流量，分配给流量减少模块处理。
在上述技术方案的基础上，流量增加模块计算业务经过的所有路由节点是否还有剩余的ODUK管道资源，若是，将业务分配到各个节点建立ODUK管道，若否，在无剩余ODUK管道的节点上提示，并提供可替代的可删除业务。
在上述技术方案的基础上，在无剩余ODUK管道的节点上提示后，成帧芯片在各个节点建立ODUK管道，包处理模块将ODUK管道加入到LAG成员组。
在上述技术方案的基础上，所述ODUK管道加入或移出LGA成员组的动作命令，均通过OTN的开销字节传递。
在上述技术方案的基础上，OTN的开销字节是同一层次ODUK层的，或者是不同层次的ODUK层的。
本发明还提供一种基于OTN分组业务无损调整的方法，包括步骤：
S1.网管处理模块收到调整业务流量命令时，判断是业务流量的增加还是减少，若是增加，进入S2；若是减少，进入S6；
S2.流量增加模块计算待调整业务经过的所有路由节点，判断是否每个节点都有足够的未使用ODUK管道，若否，进入S3，若是，进入S4；
S3.流量增加模块将没有足够未使用ODUK管道的节点已占用的ODUK管道罗列出，删除已占用的ODUK管道业务；
S4.流量增加模块给每个节点分配ODUK通道，并通过成帧芯片建立空的ODUK通道；
S5.包处理模块将新建立的ODUK管道和需要扩容的ODUK管道加入LAG成员组中，结束；
S6.流量减少模块为每个节点分配需要减少的ODUK管道，包处理模块将减少的ODUK管道移出LAG成员组，成帧芯片释放减少的ODUK管道，结束。
在上述技术方案的基础上，ODUK管道加入或移出LAG成员组的命令，通过OTN的开销字节来传递。
在上述技术方案的基础上，OTN的开销字节是同一层次ODUK层的，或者是不同层次的ODUK层的。
在上述技术方案的基础上，分组业务是以变长包为基本传输单元进行数据交换的业务，包括以太网、MPLS。
本发明的有益效果在于：避免在成帧芯片中进行ODUK管道的无损调整，而是在包处理模块中使用LAG成员组的增加和删除，来实现ODUK管道的无损调整，可以解决现有的业务扩容需求，降低成帧芯片的成本。除此之外，与传统的OTN无损调整方式只能调整一个波长的一个OTUK大管道内的ODUK管道相比，本发明可以任 意调整一个节点交换系统内的任意波长的任意OTUK大管道内的任意管道，有着极大的灵活性。可以在波长、子波长等级上对ODUK管道时隙进行重新分配、整合及再利用，适用范围广。
附图说明
图1为本发明实施例基于OTN分组业务无损调整的装置示意图；
图2为本发明实施例基于OTN分组业务无损调整的方法流程图。
附图标记：
1-网管处理模块，2-流量增加模块，3-流量减少模块，4-包处理模块，5-成帧芯片。
具体实施方式
以下结合附图及实施例对本发明作进一步详细说明。
如图1所示，本发明实施例基于OTN分组业务无损调整的装置，包括网管处理模块1、流量增加模块2、流量减少模块3、包处理模块4和成帧芯片5，网管处理模块1分别连接流量增加模块2、流量减少模块3，包处理模块4分别连接流量增加模块2、流量减少模块3和成帧芯片5。
网管处理模块1用于根据收到的调整业务流量命令，分给流量增加模块2或者流量减少模块3处理，具体的，若为增加业务流量，分配给流量增加模块2处理；若为减少业务流量，分配给流量减少模块3处理。
流量增加模块2用于计算一条待调整业务经过的所有路由节点是否还有剩余的ODUK管道资源，用于分配剩余ODUK管道资源到各个节点建立ODUK管道，或者在各个节点新建立ODUK管道；具体的，计算业务经过的所有路由节点是否还有剩余的ODUK管道资 源，若是，将业务分配到各个节点建立ODUK管道，若否，在无剩余ODUK管道的节点上提示，并提供可替代的可删除业务。
流量减少模块，用于为每个节点分配需要减少的ODUK管道，并决定释放需要减少的ODUK管道。
包处理模块，用于将ODUK管道加入或移出LAG成员组，ODUK管道加入或移出LGA成员组的动作命令，均通过OTN的开销字节传递，需要注意的是，这些开销字节可以是保留字节或者其他字节，以保障各个节点之间动作的同步性，以满足电信级别的信号失效时间。OTN的开销字节，可以是同一层次ODUK层的，或者是不同层次的ODUK层的。
成帧芯片，用于完成ODUK管道的增加与释放。
如图2所示，本发明基于OTN分组业务无损调整的方法，具体包括步骤：
S1.网管处理模块1收到调整业务流量命令时，判断是业务流量的增加还是减少，若是增加，进入S2；若是减少，进入S6；同时，并找到该条业务所经过的所有路由节点。
S2.流量增加模块2计算该条待调整业务经过的所有路由节点，判断是否每个节点都有足够的未使用ODUK管道，若是，进入S4，若否，进入S3。
S3.说明至少部分节点没有剩余的未使用ODUK管道来进行扩容，则流量增加模块2将此信息反馈给网管处理单元1，并将将没有足够未使用ODUK管道的节点已占用的ODUK管道罗列出，删除已占用的ODUK管道业务，进入S4。
S4.每个节点有剩余的ODUK管道用来进行扩容，则流量增加模块2给每个节点分配ODUK通道，并通过成帧芯片5建立空的ODUK 通道，此时ODUK通道本身并没有业务，也不会影响其他存在的业务流量，进入S5。
S5.包处理模块4将新建立的ODUK管道和需要扩容的ODUK管道一起加入LAG成员组中，结束。加入的动作命令在各个节点之间的传递使用OTN的开销字节来进行，需要注意的是，这些开销字节可以是保留字节或者其他字节，以保障各个节点之间动作的同步性，满足电信级别的信号失效时间。
S6.流量减少模块3为每个节点分配需要减少的ODUK管道；包处理模块4将减少的ODUK管道移出LAG成员组，移除的命令同样通过OTN的开销字节来传递以满足失效时间；成帧芯片5释放减少的ODUK管道。
本发明的分组业务是以变长包为基本传输单元进行数据交换的业务，包括但不限于以太网、MPLS(Multi-Protocol Label Switching，多协议标签交换)等。
本发明不局限于上述实施方式，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围之内。本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术。

Claims (10)

  1. 一种基于OTN分组业务无损调整的装置，其特征在于，包括：
    网管处理模块，用于根据收到的调整业务流量命令，分给流量增加模块或者流量减少模块处理；
    流量增加模块，用于分配剩余ODUK管道资源到各个节点建立ODUK管道，或者在各个节点新建立ODUK管道；
    流量减少模块，用于为每个节点分配需要减少的ODUK管道，并决定释放减少的ODUK管道；
    包处理模块，用于将ODUK管道加入或移出LAG成员组；
    成帧芯片，用于完成ODUK管道的增加与释放。
  2. 如权利要求1所述的基于OTN分组业务无损调整的装置，其特征在于：网管处理模块判断收到调整业务流量的命令，若为增加业务流量，分配给流量增加模块处理；若为减少业务流量，分配给流量减少模块处理。
  3. 如权利要求1所述的基于OTN分组业务无损调整的装置，其特征在于：流量增加模块计算业务经过的所有路由节点是否还有剩余的ODUK管道资源，若是，将业务分配到各个节点建立ODUK管道，若否，在无剩余ODUK管道的节点上提示，并提供可替代的可删除业务。
  4. 如权利要求3所述的基于OTN分组业务无损调整的装置，其特征在于：在无剩余ODUK管道的节点上提示后，成帧芯片在各个节点建立ODUK管道，包处理模块将ODUK管道加入到LAG成员组。
  5. 如权利要求1所述的基于OTN分组业务无损调整的装置，其特征在于：所述ODUK管道加入或移出LGA成员组的动作命令，均 通过OTN的开销字节传递。
  6. 如权利要求5所述的基于OTN分组业务无损调整的方法，其特征在于：OTN的开销字节是同一层次ODUK层的，或者是不同层次的ODUK层的。
  7. 一种基于权利要求1所述装置的基于OTN分组业务无损调整的方法，其特征在于，包括步骤：
    S1.网管处理模块收到调整业务流量命令时，判断是业务流量的增加还是减少，若是增加，进入S2；若是减少，进入S6；
    S2.流量增加模块计算待调整业务经过的所有路由节点，判断是否每个节点都有足够的未使用ODUK管道，若否，进入S3，若是，进入S4；
    S3.流量增加模块将没有足够未使用ODUK管道的节点已占用的ODUK管道罗列出，删除已占用的ODUK管道业务；
    S4.流量增加模块给每个节点分配ODUK通道，并通过成帧芯片建立空的ODUK通道；
    S5.包处理模块将新建立的ODUK管道和需要扩容的ODUK管道加入LAG成员组中，结束；
    S6.流量减少模块为每个节点分配需要减少的ODUK管道，包处理模块将减少的ODUK管道移出LAG成员组，成帧芯片释放减少的ODUK管道，结束。
  8. 如权利要求7所述的基于OTN分组业务无损调整的方法，其特征在于：ODUK管道加入或移出LAG成员组的命令，通过OTN的开销字节来传递。
  9. 如权利要求8所述的基于OTN分组业务无损调整的方法，其特征在于：OTN的开销字节是同一层次ODUK层的，或者是不同层 次的ODUK层的。
  10. 如权利要求7所述的基于OTN分组业务无损调整的方法，其特征在于：分组业务是以变长包为基本传输单元进行数据交换的业务，包括以太网、MPLS。
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