WO2008074192A1 - Procédé et dispositif de vérification de connectivité de données - Google Patents

Procédé et dispositif de vérification de connectivité de données Download PDF

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Publication number
WO2008074192A1
WO2008074192A1 PCT/CN2006/003527 CN2006003527W WO2008074192A1 WO 2008074192 A1 WO2008074192 A1 WO 2008074192A1 CN 2006003527 W CN2006003527 W CN 2006003527W WO 2008074192 A1 WO2008074192 A1 WO 2008074192A1
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WIPO (PCT)
Prior art keywords
tracking
message
type
layer
plane
Prior art date
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PCT/CN2006/003527
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English (en)
French (fr)
Inventor
Qimin Xiang
Ming Ke
Original Assignee
Zte Corporation
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Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to PCT/CN2006/003527 priority Critical patent/WO2008074192A1/zh
Priority to EP06828421A priority patent/EP2104273A4/en
Priority to CN2006800543016A priority patent/CN101427515B/zh
Publication of WO2008074192A1 publication Critical patent/WO2008074192A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/14Monitoring arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2203/00Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0057Operations, administration and maintenance [OAM]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/34Signalling channels for network management communication
    • H04L41/344Out-of-band transfers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0079Operation or maintenance aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0088Signalling aspects

Definitions

  • the present invention relates to the field of optical networks, and more particularly to a method and apparatus for performing data connectivity verification in an autonomous discovery optical network layer adjacency discovery process.
  • OTN optical transmission network
  • WDM wavelength division-division multiplexing
  • SDH synchronous digital series
  • SONET Synchronous Optical Network
  • ASON Automatic switched optical network
  • ITU-T ITU-T
  • ITU-T G.7714 and ITU-TG.7714.1 recommendations ITU-T G.7714 and ITU-TG.7714.1 recommendations, providing implementation specifications for adjacency discovery of transport entities
  • IETF Internet Engineering Task Force
  • RFC4204 LMP, Link Management Protocol
  • RFC4207 LMP Test Message Encoding for Synchronous Digital Hierarchy (SDH) networks
  • the regenerator segment specifies the DCC byte (Dl ⁇ D3) using the J0 byte or the regenerator segment, and the multiplex section specifies the use of the multiplex section.
  • DCC bytes D4 ⁇ D12
  • high-order VC specifies the use of J1 bytes
  • low-order VC specifies the use of J2 bytes.
  • FIG. 1 is a schematic diagram of data connectivity verification using Jx bytes in the current automatic switching optical network layer adjacency discovery process
  • FIG. 2 is a DCC byte for data connectivity verification in the current automatic switching optical network layer adjacency discovery process. Schematic diagram.
  • the layer adjacency discovery process is as follows:
  • the active control layer adjacency discovery discovery DA Discover Agent, hereinafter referred to as active
  • the node DA interacts with its neighboring DA (hereinafter referred to as the passive node DA) on the control channel through the 701 port of the UDP protocol, and advertises the process of starting layer adjacency discovery, and then the active node DA sends a message carrying the tracking object to the transmission plane.
  • the transport plane is required to send a trace message on the designated data link, and the transport plane completes the transmission of the trace message on the designated data link (the transport plane passes the trace identifier Jx byte on the data link 7
  • the active node DA sends a test message carrying the trace message on the control channel through port 701 of the UDP protocol, and requests the passive node DA to complete the data connectivity verification. After receiving the test message, the passive node DA takes out the message. The carried tracking message is compared with the tracking message received from the data link to complete the connectivity check of the data link.
  • the layer adjacency discovery process is as follows:
  • the DA of the control plane of the active initiator layer adjacency discovery (the following is called the active node DA) component passes through port 701 of the UDP protocol.
  • the active node DA Interacting with its adjacent DA (hereinafter referred to as passive node DA) on the control channel, advertising the process of starting layer adjacency discovery, and then the active node DA requests the transport plane to send a test message over the specified data link through the UDP protocol.
  • the plane passes the DCC byte on the data link to carry the tracking message.
  • the passive node DA searches for the data link corresponding to the transmission plane according to the interface index of the received test message, thereby completing the data link. Connectivity check.
  • the prior art has the following drawbacks:
  • the regenerator section, high-order VC, and low-order VC can all use the trace identification adaptation byte Jx to complete the data connectivity check), but the multiplex section layer must use the DCC byte.
  • the DCC byte is used in the SDH as the data channel of the DCN (Data Communication Network).
  • the Jx byte is used in the SDH as a tracking identifier, so that it will be used during the data connectivity check.
  • the test message for data connectivity check needs to be sent over the specified interface (on the designated data link) through UDP.
  • the specified interface transmission in the TCP/IP protocol stack is not a standard implementation. To implement the specified interface transmission, it may need to be extended by the protocol stack, which leads to the implementation complexity, and the interoperability of each manufacturer may be hidden. .
  • the present invention provides a method and apparatus for performing data connectivity check in an autonomous discovery optical network layer adjacency discovery process, which extends a tracking message and carries a tracking type in the tracking message, thereby
  • the data connectivity check during the process of adjacency discovery in the regenerator section is completed using J0 bytes.
  • the data connectivity check during the adjacency discovery process of the multiplex section can also be completed using J0 bytes.
  • an aspect of the present invention provides a method for performing data connectivity check in an auto-switching optical network layer adjacency discovery process, which includes the following steps: Step S502: Transform SDH coding of a link management protocol test message Tracking object in which the tracking message carries information of the tracking type; step S504, when performing layer adjacency discovery, the tracking agent of the control plane adjacent to the active initiating layer constructs a tracking message object according to the layer network to be discovered, and Sending a tracking message carrying the tracking object to the transmitting plane, requesting the transmitting plane to transmit in a predetermined form by using the tracking byte; and step S506, when the receiving port adjacent to the layer of the transmitting plane receives the tracking message, according to the tracking message Track types for different processing.
  • step S504 constructing a trace message object is implemented by adding a new type to the trace type of the tracked object and using the trace message to carry the trace type.
  • step S506 when the tracking type indicates that the connectivity check of the regenerator layer is performed, step S506 includes the following steps: transmitting a plane termination tracking message, and the control plane regenerating the segment according to the tracking message.
  • step S506 when the trace type indicates that the connectivity check of the multiplex section layer is performed, includes the following steps: According to the type of the receiving port, the transport plane and the control plane perform different processing.
  • the transmission plane terminates the transmission of the tracking message, and the control plane performs the connectivity check of the multiplex section layer according to the tracking message; when the receiving port is of the REG type, the transmitting plane directly tracks the message. Send to the corresponding downstream node.
  • the predetermined form of the present invention is a 16-byte multiframe, and the tracking byte is a regenerator layer.
  • Another aspect of the present invention provides an apparatus for performing data connectivity check in an auto-switching optical network layer adjacency discovery process, including: a remodeling unit, which is used to reconstruct a tracking object in an SDH encoding of a link management protocol test message. So that the tracking message carries the tracking type information; the sending unit, The tracking plane object is configured on the control plane adjacent to the active initiating layer, and is configured to construct a tracking message object according to the layer network to be discovered, and send a tracking message carrying the tracking object to the transmission plane, and request the transmission plane to pass the tracking word.
  • the section is sent according to a predetermined form; and the processing unit is configured to perform different processing according to the type of the trace carried by the trace message when the receiving port adjacent to the layer of the transport plane receives the trace message.
  • constructing a trace message object is accomplished by adding a new type to the trace type of the tracked object and using the trace message to carry the trace type.
  • the processing unit is further configured to: when the tracking type indicates that the connectivity check of the regeneration segment layer is performed, the transmission plane terminates the transmission of the tracking message, and the control plane performs the connectivity of the regeneration segment according to the tracking message.
  • the processing unit is further configured to: when the tracking type indicates that the connectivity check of the multiplex section layer is performed, the transmission plane and the control plane perform different processing according to the type of the receiving port.
  • the processing unit further includes a determining unit, configured to determine a type of the receiving port, wherein when the receiving port is of the ADM type, the transmitting plane terminates the sending of the tracking message, and the control plane according to the tracking The message performs the connectivity check of the multiplex section layer; and when the receiving port is of the REG type, the transmitting plane directly sends the tracking message to the corresponding downstream node.
  • the predetermined form according to the present invention is a 16-byte multiframe, and the tracking byte is a regenerator section; TO byte.
  • the present invention achieves the following effects:
  • the prior art layer adjacency discovery process is implemented due to different test message sending mechanisms, and the hidden dangers of interconnection and interconnection are realized.
  • the X0 byte can be used to automatically exchange light.
  • the data connectivity check during the network regenerative segment layer adjacency discovery process can also implement the data connectivity check in the multiplex section layer adjacency discovery process, unifying the transport mechanism and the school insurance process in the data verification process, so that the layer adjacency discovery The process is simpler and more efficient.
  • FIG. 1 is a schematic diagram of data connectivity check using Jx bytes in the process of adjacency discovery in the automatic switched optical network layer in the related art
  • FIG. 2 is a DCC used in the process of adjacency discovery in the automatic switched optical network layer in the related art.
  • FIG. 3 is a view of the definition of the tracking object by the RFC 4207;
  • FIG. 4 is a flowchart of the method for verifying the data connectivity in the process of adjacency discovery in the automatic switched optical network layer according to an embodiment of the present invention
  • Figure 5 is a flow chart of a method for verifying data connectivity in an auto-switched optical network layer adjacency discovery process in accordance with the present invention
  • Figure 6 is an ADM interface using J0 words in a layer adjacency discovery process in accordance with an embodiment of the present invention
  • FIG. 7 is a schematic diagram of performing regenerative segment or multiplex section layer data connectivity check
  • FIG. 7 is a diagram showing data connectivity verification of a regenerator segment using J0 bytes in a layer adjacency discovery process according to an embodiment of the present invention.
  • FIG. 8 is a diagram showing a data connectivity check of a multiplex section layer using J0 bytes in a layer adjacency discovery process according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention are described with reference to the accompanying drawings.
  • the trace message and the test message are both messages defined in RFC4207 (SDH Encoding for LMP Test messages).
  • Figure 3 is a view of the definition of the tracking object by RFC 4207.
  • the definition of the tracking object by RFC 4207 will be described in detail below with reference to FIG.
  • Trace Message Indicates the message that is expected to be received in-band (data link) during connectivity verification.
  • RFC 4207 defines Trace Message and Test Message as follows: ⁇ Test Message>:: ⁇ Common Header> ⁇ LOC AL - INTERFACE - ID> ⁇ VERIFY_ID> ⁇ TRACE> It should be noted that the embodiment of the present invention is based on LMP ( follows the RPC4024 and RPC4207), where the Trace Message can carry the identifier of the trace type, so that the data connectivity discovered by the layer adjacency of the multiplex section can be completed using J0 bytes.
  • the method for performing data connectivity verification in the process of adjacency discovery in the automatic switched optical network layer as shown in FIG. 4 will be described in detail below with reference to FIG. 4 and FIG. 6-8.
  • the automatic switched optical network includes a plurality of nodes, and the nodes are connected by a data link, and the control plane is also introduced in the automatic switched optical network (note that the figure only indicates the automatic discovery component DA of the control plane) .
  • FIG. 4 is a data transmission process in the automatic switched optical network layer adjacency discovery process according to an embodiment of the present invention.
  • FIG. 5 is an automatic exchange light of the present invention
  • Step S502 Modify a tracking object in an SDH code of a link management protocol test message to enable a tracking message therein
  • the information of the tracking type is carried in the embodiment.
  • the tracking object in the RFC4207 is modified, so that the tracking message can carry information of the layer network, and the specific method is as follows:
  • Step S504 when performing layer adjacency discovery, the tracking agent of the control plane adjacent to the active initiating layer is found according to the Layer network to construct a tracking message object, and send a tracking message carrying the tracking object to the transmission plane, requesting the transmission plane to transmit in a predetermined form through the tracking byte, which corresponds to steps S404, S406 and S408 as shown in FIG. : S404, the DA constructs a tracking message, and carries the tracking type in the tracking message;
  • the DA requesting the transport plane sends the trace message in the form of a 16-byte multiframe through the J0 byte on the designated data link.
  • Step S408 the DA sends a test message carrying the tracking message object on the control channel, notifies the adjacent control plane to receive the tracking message, and performs connectivity check.
  • Step S506 when the receiving port adjacent to the layer of the transmission plane receives the tracking message, According to the type of the trace carried by the trace message, a different process is performed, which corresponds to steps S410-S418 as shown in FIG. 4:
  • S410 Receive, by using a J0 byte, a tracking message sent by the adjacency in the transport plane data link.
  • step S412 determining whether the receiving port is REG, if the receiving port is REG, proceeding to step S414, otherwise proceeding to step S416;
  • FIG. 6 is a schematic diagram of the ADM interface in the layer adjacency discovery process using the J0 byte for the regenerative segment or the multiplex segment layer data connectivity check.
  • FIG. 7 is a schematic diagram of a REG interface for performing data connectivity check of a regenerator section layer using J0 bytes in a layer adjacency discovery process according to an embodiment of the present invention
  • FIG. 8 is a REG interface found in layer adjacency according to an embodiment of the present invention.
  • the transmission plane terminates the transmission of the test message, and the control plane can be based on the received J0 byte.
  • the carried tracking message performs connectivity check of the regenerator section.
  • FIG. 9 is a block diagram of a data connectivity calibration device 900 in an auto-switched optical network layer adjacency discovery process in accordance with the present invention. As shown in FIG.
  • the apparatus 900 for performing data connectivity check in the adjacency discovery process of the dynamic switched optical network layer includes: a remodeling unit 902, configured to modify a tracking object in an SDH encoding of a link management protocol test message, so as to The tracking message carries the information of the tracking type.
  • the sending unit 904 is located on the control plane adjacent to the active initiating layer, and is configured to construct a tracking message object according to the layer network to be discovered when performing layer adjacency discovery, and carry the tracking object.
  • the tracking message is sent to the transport plane, the transport plane is required to be transmitted in a predetermined form by the tracking byte; and the processing unit 906 is configured to transmit
  • the receiving port adjacent to the plane of the plane performs different processing when the tracking message is received, and the processing unit 906 further includes a determining unit 9062, which is used to determine the type of the receiving port, when receiving the port.
  • the transmission plane terminates the tracking message transmission, and the control plane performs the connectivity check of the multiplex section layer according to the tracking message; and when the receiving port is of the REG type, the transmission plane directly sends the tracking message to the corresponding downstream node.
  • processing unit 906 is further configured to: when the tracking type indicates that the connectivity check of the regeneration segment layer is performed, the transmission plane terminates the tracking message, and the control plane performs the connectivity check of the regeneration segment according to the tracking message; When the type indicates that the continuity check of the multiplex section layer is performed, the transmission plane and the control plane perform different processing according to the type of the receiving port.
  • construction unit 902 constructing a trace message object is accomplished by adding a new type to the trace type of the tracked object and using the trace message to carry the trace type.
  • the predetermined format is a 16-byte multiframe
  • the tracking byte is the J0 byte of the regenerator section layer.
  • the present invention achieves the following technical effects: carrying the tracking type in the tracking message, and expanding the tracking message, so that the data connection in the process of adjacency discovery of the regenerative segment can be completed by using the J0 byte.
  • the sufficiency check can also complete the data connectivity check in the contiguous discovery process of the multiplex section.
  • the present invention solves the problem of complex implementation and interconnection existence caused by different test message sending mechanisms in the prior art layer adjacency discovery process. Hidden dangers, unifying the transmission mechanism in the data verification process (both using the trace identity adaptation Jx byte) and the verification process, making the layer adjacency discovery process simpler and more efficient.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Time-Division Multiplex Systems (AREA)
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Description

数据连通性校臉方法及装置 技术领域 本发明涉及光网络领域, 更具体地 , 涉及一种自动交换光网络层邻接发现 过程中进行数据连通性校验的方法及装置。 背景技术 在电信领 i或中, 光传送网络(Optical transmission network, 简称为 OTN )、 波分复用 (Wavelength-division multiplexing, 筒称为 WDM )、 同步数字系列 ( Synchronous digital hierarch , 筒称、为 SDH ) 或同步光网络 ( Synchronous optical network, 简称为 SONET )传送网等光网络已经得到了广泛应用。 自动交换光网络 ( Automatic switched optical network , 简称为 ASON )是 近年来光网络领域的研究热点。 在 ITU-TG.8080建议中提出了 ASON的概念, 通过设置专门的控制平面( Control plane, 简称为 CP )完成 ASON网络的功能。 ' ITU-T (国际电联)在 ITU-TG.7714和 ITU-TG.7714.1建议中规定了 ASON网 络传送实体自动发现的实现框架, 为传送实体的邻接发现提供了实现规范, 互 联网工程任务組( IETF )在 RFC4204 ( LMP, 链路管理协议 )和 RFC4207 (用 于同步数字体系( SDH )网络的 LMP测试消息编码)建议中进一步描述了 ASON 网络传送实体自动发现的实现。 目前, 依据 G.7714.1和 RFC4207, 在层邻接发现过程数据连通性校验时, 再生段规定使用 J0字节或再生段的 DCC字节 ( Dl ~ D3 ), 复用段规定使用复 用段的 DCC字节 ( D4〜D12 ), 高阶 VC规定使用 J1字节, 低阶 VC规定使用 J2字节。 图 1是当前自动交换光网络层邻接发现过程中采用 Jx字节进行数据连通 性校验的示意图,以及图 2是当前自动交换光网絡层邻接发现过程中采用 DCC 字节进行数据连通性校验的示意图。 如图 1所示, 当传送机制釆用 Jx字节时, 层邻接发现过程如下: 主动发起层邻接发现的控制平面的 DA ( Discover Agent, 以下简称为主动 节点 DA )组件通过 UDP协议的 701端口在控制通道上与其邻接的 DA (以下 简称为被动节点 DA )进行交互, 通告开始层邻接发现的过程, 然后主动节点 DA发送携带跟踪对象的消息给传送平面, 要求传送平面在指定的数据链路上 发送跟踪消息, 传送平面在指定的数据链路上完成跟踪消息的发送后 (传送平 面通过数据链路上的 艮踪标识 Jx字节来 7|载 3艮踪消息;), 主动节点 DA再通过 UDP协议的 701端口在控制通道上发送携带跟踪消息的测试消息,要求被动节 点 DA完成数据连通性验证 , 被动节点 DA在接收到测试消息后, 取出其携带 的跟踪消息, 并与从数据链路上接收到的跟踪消息比较, 从而完成数据链路的 连通性校验。 如图 2所示, 当传送机制采用 DCC字节时, 层邻接发现过程如下: 主动发起层邻接发现的控制平面的 DA ( Discover Agent, 以下筒称为主动 节点 DA )组件通过 UDP协议的 701端口在控制通道上与其邻接的 DA (以下 简称为被动节点 DA )进行交互, 通告开始层邻接发现的过程, 然后主动节点 DA再要求传送平面在指定的数据链路上通过 UDP协议发送测试消息(传送平 面通过数据链路上的 DCC字节来 ? 载艮踪消息), 被动节点 DA在接收到测试 消息后, 根据接收测试消息的接口索引查找与传送平面对应的数据链路, 从而 完成数据链路的连通性校验。 综上所述, 现有技术存在以下缺陷:
( 1 )再生段、 高阶 VC和低阶 VC均可以使用跟踪标识适配字节 Jx来完 成数据连通性校验), 但是复用段层则必须使用 DCC字节。 DCC字节在 SDH 中是用来作为 DCN (数据通信网)的数据通道用的, Jx字节在 SDH中是用来 作为跟踪标识适配用的, 这样在数据连通性校验过程中就会存在不相同的传送 机制和校验流程, 从而导致了实现的复杂。
( 2 )在层邻接发现过程中, 当传送机制采用 DCC 字节时, 用于数据连 通性校验的测试消息需要通过 UDP在指定接口 (指定的数据链路上 )上发送。 而在 TCP / IP协议栈中指定接口发送并不是标准的实现,要实现指定接口发送 可能需要对已由有协议栈进行扩展, 从而导致了实现的复杂, 并且各个厂家在 互通性可能会存在隐患。 发明内容 为了解决上述问题,本发明提供了一种自动交换光网络层邻接发现过程中 进行数据连通性校验的方法及装置, 对跟踪消息进行扩展, 在跟踪消息中携带 跟踪类型,从而既可以使用 J0字节完成再生段邻接发现过程中的数据连通性校 验, 也可以使用 J0字节完成复用段的邻接发现过程中的数据连通性校验。 为了实现上述目的,本发明一个方面提供了一种自动交换光网络层邻接发 现过程中进行数据连通性校验的方法, 其包括: 以下步驟: 步驟 S502, 改造链 路管理协议测试消息的 SDH编码中的跟踪对象, 以使其中的跟踪消息携带跟 踪类型的信息; 步骤 S504, 在进行层邻接发现时, 主动发起层邻接的控制平面 的跟踪代理根据所要发现的层网络来构造跟踪消息对象, 并将携带跟踪对象的 跟踪消息发送给传送平面, 要求传送平面通过跟踪字节按照预定形式进行发 送; 以及步驟 S506, 传送平面的层邻接的接收端口在接收到跟踪消息时, 根据 跟踪消息所携带的跟踪类型来进行不同的处理。 居本发明的一个方面, 在步骤 S504中, 构造跟踪消息对象是通过在跟 踪对象的跟踪类型中增加一种新的类型, 并使用跟踪消息携带跟踪类型来实现 的。 另夕卜,根据本发明的一个方面, 当跟踪类型表示进行的是再生段层的连通 性校验时, 步骤 S506 包括以下步驟: 传送平面终结跟踪消息的发送, 控制平 面依据跟踪消息进行再生段的连通性校验; 此外, 当踪类型表示进行的是复用 段层的连通性校验时, 步骤 S506 包括以下步骤: 根据接收端口的类型, 传送 平面和控制平面进 4亍不同的处理。 根据本发明,当接收端口为 ADM类型时,传送平面终结跟踪消息的发送, 控制平面根据跟踪消息进行复用段层的连通性校验; 当接收端口为 REG类型 时, 传送平面直接将跟踪消息发送给相应的下游节点。 此外, #居本发明的预定形式为 16字节的复帧, 跟踪字节为再生段层的
J0字节。 本发明另一方面还提供了一种自动交换光网络层邻接发现过程中进行数 据连通性校验的装置, 其包括: 改造单元, 用于改造链路管理协议测试消息的 SDH编码中的跟踪对象,以使其中的跟踪消息携带跟踪类型的信息;发送单元, 位于主动发起层邻接的控制平面上, 用于在进行层邻接发现时, 根据所要发现 的层网络来构造跟踪消息对象, 并将携带跟踪对象的跟踪消息发送给传送平 面, 要求传送平面通过跟踪字节按照预定形式进行发送; 以及处理单元, 用于 在传送平面的层邻接的接收端口在接收到跟踪消息时, 根据跟踪消息所携带的 ί良踪类型来进 4亍不同的处理。 根据本发明的另一方面,在构造单元中,构造跟踪消息对象是通过在跟踪 对象的跟踪类型中增加一种新的类型, 并使用跟踪消息携带跟踪类型来实现 的。 根据本发明的另一方面,处理单元还用于: 当跟踪类型表示进行的是再生 段层的连通性校驗时, 传送平面终结跟踪消息的发送, 控制平面依据跟踪消息 进行再生段的连通性校驗; 此外, 处理单元还用于: 当跟踪类型表示进行的是 复用段层的连通性校验时, 根据接收端口的类型, 传送平面和控制平面进行不 同的处理。 另夕卜, 根据本发明的另一方面, 处理单元还包括判断单元, 用于判断接收 端口的类型, 其中, 当接收端口为 ADM类型时, 传送平面终结艮踪消息的发 送, 控制平面根据跟踪消息进行复用段层的连通性校验; 以及当接收端口为 REG类型时, 传送平面直接将跟踪消息发送给相应的下游节点。 根据本发明的预定形式为 16字节的复帧,跟踪字节为再生段层的; TO字节。 如上所述, 本发明实现了以下 ^支术效果: 解决了现有技术层邻接发现过 程由于测试消息发送机制不同而导致的实现复杂以及互联互通存在的隐患, 可 以通过 J0字节实现自动交换光网络再生段层邻接发现过程中数据连通性校验, 也可以实现复用段层邻接发现过程中数据连通性校验, 统一了数据校验过程中 的传送机制和校险流程, 使层邻接发现过程更简单有效。 本发明的其它特征和优点将在随后的说明书中阐述, 并且,部分地从说明 书中变得显而易见, 或者通过实施本发明而了解。 本发明的目的和其他优点可 通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实现和获 得。 附图说明 附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发 明的实施例一起用于解释本发明, 并不构成对本发明的限制。 在附图中: 图 1是相关技术中自动交换光网络层邻接发现过程中采用 Jx字节进行数 据连通性校验的示意图; 图 2是相关技术中自动交换光网络层邻接发现过程中采用 DCC字节进行 数据连通性校验的示意图; 图 3是 RFC4207对跟踪对象定义的视图; 图 4 是根据本发明的实施例的自动交换光网络层邻接发现过程中进行数 据连通性校验方法的流程图; 图 5 是根据本发明的自动交换光网絡层邻接发现过程中进行数据连通性 校验方法的流程图; 图 6是根据本发明的实施例的 ADM接口在层邻接发现过程中使用 J0字 节进行再生段或复用段层数据连通性校验的示意图; 图 7是根据本发明的实施例的 REG接口在层邻接发现过程中使用 J0字节 进行再生段层的数据连通性校验的示意图; 图 8是根据本发明的实施例的 REG接口在层邻接发现过程中使用 J0字节 进行复用段层的数据连通性校验的示意图; 以及 图 9根据本发明的自动交换光网络层邻接发现过程中进行数据连通性校 ¾ ^装置的框图。 具体实施方式 以下结合附图对本发明的优选实施例进行说明,应当理解,此处所描述的 优选实施例仅用于说明和解释本发明, 并不用于限定本发明。 在本发明的实施例中,跟踪消息和测试消息均为 RFC4207( SDH Encoding for LMP Test messages ) 中定义的消息。 图 3 是 RFC4207对跟踪对象定义的视图, 下面将参照图 3 来详细说明 RFC4207对跟踪对象的定义。 如图 3所示, Trace Type (跟踪类型) : 表示 Trace Message (跟踪消息) 的类型, 定义如下: 1 = SONET Section Trace ( JO Byte )
2 = SONET Path Trace ( Jl Byte )
3 = SONET Path Trace ( J2 Byte )
4 = SDH Section Trace ( JO Byte )
5 = SDH Path Trace ( Jl Byte ) 6 = SDH Path Trace ( J2 Byte )
Trace Message (跟踪消息): 表示连通性验证过程中期望在带内 (数据链 路) 上收到的消息。
RFC4207对 Trace Message 和 Test Message的定义如下: <Test Message>:: =<Common Header> <LOC AL— INTERFACE— ID> <VERIFY_ID> <TRACE> 需要说明的是,本发明的实施例是基于 LMP(遵循 RPC4024和 RPC4207 ) 之上的, 其中, Trace Message可以携带跟踪类型的标识, 这样复用段的层邻接 发现的数据连通性校-险将可以使用 J0字节来完成。 以下将结合图 4、 以及图 6-8详细描述如图 4所示的自动交换光网络层邻 接发现过程中进行数据连通性校验方法。 在本实施例中, 自动交换光网络包括 多个节点, 节点间以数据链路相连, 自动交换光网络中还引入了控制平面 (注 意, 附图仅标出了控制平面的自动发现组件 DA )。 首先,结合图 4描述如图 5所示的自动交换光网络层邻接发现过程中进行 数据连通性校险方法, 图 4是根据本发明的实施例的自动交换光网络层邻接发 现过程中进行数据连通性校验方法的流程图, 图 5是 居本发明的自动交换光 网络层邻接发现过程中进行数据连通性校睑方法的流程图。 在下文中, 将结合 图 6-8进一步描述本方法。 如图 5所示,自动交换光网络层邻接发现过程中进行数据连通性校臉方法 包括以下步骤: 步骤 S502 , 改造链路管理协议测试消息的 SDH编码中的跟踪对象, 以使 其中的跟踪消息携带跟踪类型的信息, 在本实施例中, 是指对 RFC4207 中的 跟踪对象进行改造,使其中的跟踪消息可以携带层网络的信息,具体方法如下:
( 1 )在跟踪对象的跟踪类型中增加一种新的类型, 如下:
7 = SDH Line Trace (JO Byte) ( 2 )在构造跟踪对象的跟踪消息时, 在其中携带跟踪类型; 步骤 S504, 在进行层邻接发现时, 主动发起层邻接的控制平面的跟踪代 理根据所要发现的层网络来构造跟踪消息对象, 并将携带跟踪对象的跟踪消息 发送给传送平面, 要求传送平面通过跟踪字节按照预定形式进行发送, 其对应 于如图 4所示的步骤 S404、 S406以及 S408: S404, DA构造跟踪消息, 在跟踪消息中携带跟踪类型;
S406, DA请求传送平面在指定的数据链路上通过 J0字节采用 16字节复 帧的形式发送跟踪消息;
S408, DA在控制通道上发送携带跟踪消息对象的测试消息, 通知邻接的 控制平面接收跟踪消息, 并进行连通性校验; 步驟 S506, 传送平面的层邻接的接收端口在接收到跟踪消息时, 根据跟 踪消息所携带的 艮踪类型来进 ^"不同的处理, 其对应于如图 4 所示的步骤 S410-S418:
S410, 在传送平面数据链路中通过 J0字节接收邻接发送的跟踪消息;
S412 , 判断接收端口是否为 REG, 如果接收端口是 REG, 则进行到步骤 S414, 否则进行到步骤 S416;
S414 , 根据跟踪消息中携带的跟踪类型判断要进行数据连通性校验的层 网络是否为复用段, 如果不是复用段, 则进行到步驟 S416 , 否则进行到步骤 S418;
S416, 终结 J0字节的传递, DA将 J0字节携带的艮踪消息和从控制通道 接收到的测试消息携带的跟踪消息对象进行比较, 完成数据连通性验证; S418,传送平面直接将此跟踪消息通过 J0字节透传给 REG的相应下游节 点。 至此, 实现了自动交换光网络层邻接发现过程中进行数据连通性的校验。 以下将参照图 6_8进一步描述上述实施例,图 6是 居本发明的实施例的 ADM接口在层邻接发现过程中使用 J0字节进行再生段或复用段层数据连通性 校验的示意图, 图 7是根据本发明的实施例的 REG接口在层邻接发现过程中 使用 J0字节进行再生段层的数据连通性校验的示意图,图 8是根据本发明的实 施例的 REG接口在层邻接发现过程中使用 J0字节进行复用段层的数据连通性 校马 的示意图。 如图 6及图 7所示, 当 J0携带的跟踪消息表明其进行的是再生段层的连 通性校验时, 传送平面终结此测试消息的发送, 控制平面可以依据收到的此 J0 字节携带的跟踪消息进行再生段的连通性校验。 当 J0携带的跟踪消息表明其进行的是复用段层的连通性校臉时, 如果接 收端口是 ADM类型, 则如图 6所示, 传送平面终结此测试消息的发送, 控制 平面可以依据收到的此 J0字节携带的跟踪消息进行复用段的连通性校验,如果 接收端口是 REG类型, 则如图 8所示, 传送平面直接将此跟踪消息通过 J0字 节发送给相应的下游节点。 图 9 根据本发明的自动交换光网络层邻接发现过程中进行数据连通性校 -俭装置 900的框图。 如图 9所示,动交换光网络层邻接发现过程中进行数据连通性校验的装置 900包括: 改造单元 902 , 用于改造链路管理协议测试消息的 SDH编码中的跟 踪对象, 以使其中的跟踪消息携带跟踪类型的信息; 发送单元 904, 位于主动 发起层邻接的控制平面上, 用于在进行层邻接发现时, 根据所要发现的层网络 来构造跟踪消息对象, 并将携带跟踪对象的跟踪消息发送给传送平面, 要求传 送平面通过跟踪字节按照预定形式进行发送; 以及处理单元 906, 用于在传送 平面的层邻接的接收端口在接收到跟踪消息时, 居跟踪消息所携带的跟踪类 型来进行不同的处理, 其中, 处理单元 906还包括判断单元 9062, 用于判断接 收端口的类型, 当接收端口为 ADM类型时, 传送平面终结跟踪消息的发送, 控制平面根据跟踪消息进行复用段层的连通性校验; 以及当接收端口为 REG 类型时, 传送平面直接将跟踪消息发送给相应的下游节点。 此外,处理单元 906还用于: 当跟踪类型表示进行的是再生段层的连通性 校验时, 传送平面终结跟踪消息的发送, 控制平面依据跟踪消息进行再生段的 连通性校验; 当跟踪类型表示进行的是复用段层的连通性校验时, 根据接收端 口的类型, 传送平面和控制平面进行不同的处理。 在构造单元 902中,构造跟踪消息对象是通过在艮踪对象的跟踪类型中增 加一种新的类型, 并使用跟踪消息携带跟踪类型来实现的。 另外, 需要指出的是, 预定形式为 16字节复帧, 跟踪字节为再生段层的 J0字节。 从以上的描述中, 可以看出, 本发明实现了如下技术效果: 在艮踪消息中 携带跟踪类型,对跟踪消息进行扩展,从而使用 J0字节既可以完成再生段邻接 发现过程中的数据连通性校验, 也可以完成复用段的邻接发现过程中的数据连 通性校验, 另外, 本发明解决了现有技术中层邻接发现过程由于测试消息发送 机制不同导致的实现复杂和互联互通存在的隐患, 统一了数据校验过程中的传 送机制(均采用跟踪标识适配 Jx字节)和校验流程,使层邻接发现过程更简单、 有效。 以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领 域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则 之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之 内。

Claims

权 利 要 求 书 一种校 - 方法, 用于在自动交换光网络层邻接发现过程中进行数据连通 性校 -瞼, 其特征在于, 包括以下步眯:
步骤 S502,改造链路管理协议测试消息的 SDH编码中的跟踪对象, 以使其中的跟踪消息携带跟踪类型的信息;
步骤 S504, 在进行所述层邻接发现时, 主动发起所述层邻接的控 制平面的跟踪代理根据所要发现的层网络来构造所述跟踪消息对象, 并 将携带所述跟踪对象的所述跟踪消息发送给传送平面 , 要求所述传送平 面通过跟踪字节按照预定形式进行发送; 以及
步骤 S506, 所述传送平面的层邻接的接收端口在接收到所述跟踪 消息时 , 根据所述跟踪消息所携带的跟踪类型来进行不同的处理。 根据权利要求 1所述的校验方法, 其特征在于, 在所述步驟 S504中, 构 造所述跟踪消息对象是通过在所述跟踪对象的跟踪类型中增加一种新的 类型, 并使用所述跟踪消息携带所述跟踪类型来实现的。 根据权利要求 1所述的校验方法, 其特征在于, 当所述跟踪类型表示进 行的是再生段层的连通性校脸时, 所述步骤 S506包括以下步骤:
所述传送平面终结所述跟踪消息的发送,所述控制平面依据所述跟 踪消息进行再生段的连通性校验。 根据权利要求 1所述的校验方法, 其特征在于, 当所述跟踪类型表示进 行的是复用段层的连通性校验时, 所述步骤 S506包括以下步驟:
才艮据所述接收端口的类型,所述传送平面和所述控制平面进行不同 的处理。 根据权利要求 3所述的校验方法,其特征在于, 当所述接收端口为 ADM 类型时, 所述传送平面终结所述跟踪消息的发送, 所述控制平面才艮据所 述跟踪消息进行复用段层的连通性校验。 根据权利要求 3所述的校验方法, 其特征在于, 当所述接收端口为 REG 类型时, 所述传送平面直接将所述跟踪消息发送给相应的下游节点。
7. 根据权利要求 1所述的校验方法, 其特征在于, 所述预定形式为 16字节 的复帧。
8. 根据权利要求 1所述的校验方法, 其特征在于, 所述跟踪字节为再生段 层的 J0字节。 9. 一种校验装置, 用于在自动交换光网络层邻接发现过程中进行数据连通 性校验, 其特征在于, 包括:
改造单元, 用于改造链路管理协议测试消息的 SDH编码中的跟踪 对象, 以使其中的跟踪消息携带跟踪类型的信息;
发送单元, 位于主动发起所述层邻接的控制平面上, 用于在进行所 述层邻接发现时, 根据所要发现的层网络来构造所述跟踪消息对象, 并 将携带所述跟踪对象的所述跟踪消息发送给传送平面, 要求所述传送平 面通过跟踪字节按照预定形式进行发送; 以及 处理单元,用于在所述传送平面的层邻接的接收端口在接收到所述 跟踪消息时, #居所述跟踪消息所携带的跟踪类型来进行不同的处理。 10. 根据权利要求 9所述的校验装置, 其特征在于, 在所述构造单元中, 构 造所述跟踪消息对象是通过在所述跟踪对象的跟踪类型中增加一种新的 类型 , 并使用所述跟踪消息携带所述跟踪类型来实现的。
11. 根据权利要求 9所述的校验装置, 其特征在于, 所述处理单元还用于: 当所述跟踪类型表示进行的是再生段层的连通性校验时, 所述传送平面 终结所述跟踪消息的发送, 所述控制平面依据所述跟踪消息进行再生段 的连通性校验。
12. 根据权利要求 9所述的校验装置, 其特征在于, 所述处理单元还用于: 当所述跟踪类型表示进行的是复用段层的连通性校臉时, 根据所述接收 端口的类型, 所述传送平面和所述控制平面进行不同的处理。 13. 根据权利要求 11所述的校验装置, 其特征在于, 所述处理单元还包括判 断单元, 用于判断所述接收端口的类型, 其中,
当所述接收端口为 ADM类型时, 所述传送平面终结所述跟踪消息 的发送, 所述控制平面根据所述跟踪消息进行复用段层的连通性校—睑; 以及 当所述接收端口为 REG类型时, 所述传送平面直接将所述艮踪消 息发送给相应的下游节点。
14. 根据权利要求 9所述的校验装置, 其特征在于, 所述预定形式为 16字节 的复帧。 15. 根据权利要求 9所述的校臉装置, 其特征在于, 所述跟踪字节为再生段 层的 J0字节。
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