WO2023124234A1 - Method and device for communicating optical transport network services - Google Patents

Method and device for communicating optical transport network services Download PDF

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Publication number
WO2023124234A1
WO2023124234A1 PCT/CN2022/118424 CN2022118424W WO2023124234A1 WO 2023124234 A1 WO2023124234 A1 WO 2023124234A1 CN 2022118424 W CN2022118424 W CN 2022118424W WO 2023124234 A1 WO2023124234 A1 WO 2023124234A1
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Prior art keywords
message
side channel
identifier
point device
network
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PCT/CN2022/118424
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French (fr)
Chinese (zh)
Inventor
陈巍
郑瑜
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0086—Network resource allocation, dimensioning or optimisation

Definitions

  • the invention relates to the communication field, in particular to a method and equipment for connecting optical transport network services.
  • the Optical Transport Network gradually sinks to the metropolitan area, covering a large number of edge nodes and extending to access network equipment.
  • OTN Optical Transport Network
  • operators usually divide network domains, for example, according to administrative management areas, according to equipment suppliers, or according to technical fields.
  • the existing technology generally adopts the method of unified network management configuration, that is, deploys a top-level unified network management controller to perform global management on all domains of the entire OTN network. Send relevant configuration messages to open up end-to-end services. This method has high management costs and poor flexibility.
  • Embodiments of the present invention provide a method and device for connecting optical transport network services.
  • the establishment of an end-to-end service path does not require an additional top-level network management, and the connection of cross-domain services can be completed by the border point device itself.
  • the embodiment of the present invention provides a method for connecting to an OTN service on an optical transport network, which is applied to an OTN system including a first border point device and a second border point device, including: the first border point device corresponds to the private network identifier
  • the first port of the first access point device receives the first message sent by the first access point device, the first message includes the service identifier and the first user side channel identifier; the first border point device sends the second message to the second border point device,
  • the second message includes a private network identifier and a service identifier;
  • the second boundary point device receives the third message sent by the second access point device from the second port corresponding to the private network identifier, and the third message includes the service identifier, the second User-side channel identifier;
  • the second border point device allocates the network-side channel corresponding to the service identifier in the optical transmission tunnel between the first border point device and the second border point device corresponding to the private network identifier, and establishes a second user
  • connection of cross-domain services can be completed by the border point device itself. Improve the flexibility and scalability of the system.
  • the optical transmission tunnel is an optical channel data unit ODU, and the network side channel is an optical service unit OSU; or, the optical transmission tunnel is a high-order ODU, and the network side channel is a low-order ODU. Further improve the flexibility of the system.
  • the OTN overhead carries the first packet, the second packet, the third packet, or the fourth packet.
  • the first packet, the second packet, the third packet, or the fourth packet is an extended Path Computation Element Protocol PCEP packet or a Border Gateway Protocol BGP packet.
  • an embodiment of the present invention provides a method for connecting to an OTN service on an optical transport network, which is applied to a border point device in the OTN, including: receiving the first message sent by the access point device through a port corresponding to the private network identifier, And receive the second message sent by another border point device, the first message includes the service identification and the user side channel identification, and the second message includes the private network identification and the service identification; according to the establishment of the first message and the second message The connection between the user-side channel and the network-side channel, where the network-side channel is located in the optical transmission tunnel between the current border point device and another border point device corresponding to the private network identifier.
  • connection of cross-domain services can be completed by the border point device itself.
  • receiving the first message and the second message specifically includes: receiving the first message, determining that the second message has not been received according to the private network identifier and the service identifier, and sending the message to another border point device
  • the third message including the private network identifier and the service identifier is received, and the second message returned by another border point device is received, and the second message includes the identifier of the network side channel.
  • receiving the first message and the second message specifically includes: receiving the first message, and determining that the second message sent by another border point device has been received according to the private network identifier and the service identifier; Establishing the connection between the user-side channel and the network-side channel according to the first message and the second message specifically includes: allocating the network-side channel corresponding to the service identifier in the optical transmission tunnel, and establishing the user-side channel and the network-side channel according to the user-side channel identifier. Side channel connection; the method further includes: sending a third message including the private network identifier, the service identifier, and the network side channel identifier to another border point device.
  • the optical transmission tunnel is an ODU
  • the network-side channel is an OSU
  • the optical transmission tunnel is a high-order ODU
  • the network-side channel is a low-order ODU.
  • packets are carried in the overhead of the OTN.
  • the packet can be an extended PCEP packet or a BGP packet. These designs improve the compatibility of the system.
  • an embodiment of the present invention provides an optical transmission system, including a first boundary point device and a second boundary point device that implement the method in the first aspect above, and the details are not repeated here.
  • an embodiment of the present invention provides an optical transmission device, which has a function of realizing the behavior of the optical transmission boundary point device in the method of the second aspect above.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more units corresponding to the above functions, for example: a communication unit and a connection unit, where the communication unit is used to: receive the first message sent by the access point device through the port corresponding to the private network identifier; text, and receive the second message sent by another border point device, the first message includes the service identifier and the user side channel identifier, the second message includes the private network identifier and the service identifier; the connection unit is used to: according to the first message The text and the second message establish a connection between the user-side channel and the network-side channel, and the network-side channel is located in the optical transmission tunnel between the current border point device and another border point device corresponding to the private network identifier.
  • a communication unit is used to: receive the first message sent by the access point device through the port corresponding to the private network identifier; text, and receive the second message sent by another border point device, the first message includes the service identifier and the user side channel identifier, the second message includes the private network identifier and
  • the structure of the optical transmission device includes a processor and a memory, the memory is used to store program codes for executing the above method, and the processor is configured to execute the program stored in the memory.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the above-mentioned optical transmission device, which includes a program designed to execute the above-mentioned aspect.
  • an end-to-end service path is established by dynamically allocating network side channels, without additional top-level network management, and the connection of cross-domain services can be completed by the boundary point device itself. Services can be configured independently. When the network scale and business scale continue to expand, it has high flexibility and good scalability.
  • FIG. 1 is a schematic diagram of an OTN network system architecture provided by an embodiment of the present invention
  • FIG. 2 is a schematic flow diagram of a connection to an OTN service provided by an embodiment of the present invention
  • FIG. 3 is a schematic flow diagram of another connected OTN service provided by an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an optical transmission device provided by an embodiment of the present invention.
  • Fig. 5 is another schematic structural diagram of an optical transmission device provided by an embodiment of the present invention.
  • FIG. 1 is an architecture diagram of an OTN system provided by an embodiment of the present invention.
  • the OTN system includes an intermediate domain and four edge domains N1, N2, N3, and N4 connected through the intermediate domain.
  • the intermediate domain includes 3 border point (Border Ponit, BP) devices BP1, BP2, BP3, respectively connected with the access point (Access Point, AP) devices AP1, AP2, AP3 in the 4 edge domains N1, N2, N3, N4 , AP4 connection.
  • the application devices in the edge domains N1, N2, N3, and N4 are interconnected through access point devices and border point devices.
  • application devices and access point devices in multiple edge domains form a private network.
  • N1 and N2 can form a private network
  • N1, N2, and N4 can also form a private network.
  • the access point device in the edge domain is connected to the border point device in the middle domain, and the border point device in the middle domain can connect to multiple edge domains and support multiple private networks.
  • BP1 connects two edge domains N1 and N4 through two ports.
  • service A can be composed of application equipment E1 in N1 and application equipment E2 in N2; application equipment E1, E5 in N1 and application equipment in N2
  • the application equipment E2 and E6 constitute the service B.
  • End-to-end services can be distinguished through different combinations of private network identifiers and service identifiers.
  • the embodiments of the present invention provide a method for connecting OTN services.
  • the method specifically includes the following steps:
  • the private network ID and the corresponding port connected to AP1 are configured in BP1.
  • the private network ID can consist of letters or numbers. For example, the private network ID is "1".
  • an optical transmission tunnel corresponding to the private network connected to BP2 is configured on BP1
  • an optical transmission tunnel corresponding to the private network connected to BP1 is configured on BP2.
  • the optical transmission tunnel may be an ODUk (Optical channel Data Unit, optical channel data unit) tunnel, or an OSU (Optical Service Unit, optical service unit) tunnel.
  • the optical transmission tunnel includes multiple network-to-network interface (NNI), which are used to support the data access requirements of multiple services in the private network. It can be configured through the network management system or directly on the border point device.
  • NNI network-to-network interface
  • the application equipment E1 in the edge domain can be connected to outside the domain through the access point device AP1.
  • the service ID is configured in AP1.
  • the business ID can be composed of letters or numbers, for example, the business ID is "A”.
  • the service ID can be unique within the private network or globally unique.
  • the identifier of the first user-network interface (UNI) connected to BP1 corresponding to the service ID is also configured in AP1, for example, the identifier of the first user-side channel is the OSU channel number "1.1".
  • the first message sent includes the service ID "A" and the first user-side channel identifier "1.1".
  • the first message can be implemented by extending PCEP (Path Computation Element Protocol) or BGP (Border Gateway Protocol, Border Gateway Protocol), and carried in the overhead of OTN, such as GCC0/1/2, " Message" is the same.
  • BP1 sends the second packet to BP2.
  • BP1 determines that the first message is associated with the private network ID "1" according to the port receiving the first message, and BP1 saves the corresponding relationship between the private network ID, the service ID, and the first user-side channel identifier. BP1 sends the second message to other border point devices on the same private network, so as to notify these border point devices of service-related information.
  • the second message includes the private network ID, the service ID, and the device identification "BP1".
  • BP2 After receiving the second message, BP2 locally saves the corresponding relationship between the private network ID, the service ID, and the border point device identifier "BP1".
  • the application device E2 in the edge domain can be connected to outside the domain through the access point device AP2.
  • the service ID "A" is configured on AP2.
  • the identifier of the second user-network interface (UNI) connected to BP2 corresponding to the service ID is also configured in AP2, for example, the identifier of the second user-side channel is the OSU channel number "2.2".
  • the third message sent includes the service ID "A" and the second user side channel identifier "2.2".
  • the third packet can also be implemented by extending PCEP or BGP.
  • S207, BP2 connects the second user-side channel and the network-side channel.
  • BP2 determines that the third message is associated with the private network ID "1" according to the port receiving the third message, and further according to the service ID "A" included in the third message, and the second message received by BP2 in the aforementioned step 204 After saving the corresponding relationship between private network ID, service ID and "BP1", it is determined that a connection between BP1 and BP2 needs to be established for service "A”.
  • BP2 selects a network-side channel NNI from the optical transmission tunnel between BP1 and BP2, for example, the channel number is "x".
  • the optical transmission tunnel is an optical channel data unit ODU, and the network side channel is an optical service unit OSU; or, the optical transmission tunnel is a high-order ODU, and the network side channel is a low-order ODU.
  • BP2 After determining the NNI of the network side channel, BP2 locally generates a cross mapping path to connect the second user side channel "2.2" and the network side channel "x".
  • BP2 sends the fourth packet to BP1.
  • BP2 sends a fourth message to BP1 to notify BP1 of service-related NNI information.
  • the fourth message includes the private network ID "1", the service ID "A”, and the identifier "x" of the network side channel.
  • BP1 connects the network side channel and the first user side channel.
  • BP1 learns that BP2 has selected the network-side channel "x" of service "A”, and BP1 generates a cross mapping path locally to connect the network-side channel "x" and the first user-side channel "x”. 1.1”, that is, the first user-side channel connecting BP1 to AP1 described in step S202 above.
  • an end-to-end service path is established between N1 and N2, without additional top-level network management, and the cross-domain service connection can be completed by the boundary point device itself. Services in different edge domains can be configured independently, and the scalability is good when the network scale continues to expand.
  • BP1 can be directly connected to the user's headquarters network or cloud system. In this case, it is not necessary to perform the above step S203. It is only necessary to directly configure the service ID and user side channel in BP1, and the details will not be repeated.
  • the border point devices BP1 and BP2 perform message sending and receiving processing, and connect the network-side channel and the user-side channel at different times.
  • the border point devices in the intermediate domain all have the same function, and they may receive the message sent by the AP device first or later. That is to say, a border point device BP may execute the processing steps of BP1 in FIG. 2 , or may execute the processing steps of BP2 in FIG. 2 .
  • the embodiment of the present invention provides a method for connecting OTN services applied to a border point device BP, where a private network identifier and a corresponding port have been configured in the BP, and another border point device in the OTN intermediate domain has been configured Light transmission tunnel between.
  • the method includes the following steps:
  • S301 Receive the first packet sent by the access point device and the second packet sent by the other border point device, where the first packet includes the service identifier and the identifier of the user-side channel, and the second packet includes the dedicated Network logo and business logo;
  • a BP may first receive a message from an access point device, such as BP1 in Figure 2, or may receive a message from another BP first, such as BP2 in Figure 2.
  • the BP determines that the second message sent by another BP has not been received according to the locally stored information after receiving the first message sent by the access point device, then it is the same as the aforementioned step S204, and sends a message to the other BP Send a message, carrying the private network ID, service ID, and local device identification, to notify the peer end that "this end has a service connection requirement", and the BP waits to receive the second message returned by the peer end. If the BP determines that it has received the second message sent by another BP according to the locally stored information after receiving the first message sent by the access point device, it means that it has the ability to perform subsequent connection between the user side channel and the network side. condition of the channel.
  • the BP receives a message from another BP, it determines that it has not received the message from the AP according to the locally stored information, which means that the AP connected to this device has no "business connection requirements", and BP is waiting to receive this device.
  • the connected AP sends a message, and after receiving it, connects the user-side channel and the network-side channel, and notifies another BP to also connect to establish an end-to-end service path. If the BP receives a message from another BP and determines that it has received the message from the AP according to the locally stored information, it means that the conditions for subsequent connection between the user-side channel and the network-side channel are met.
  • multiple BP devices can establish an end-to-end service path without additional top-level network management, and the cross-domain service connection can be completed only by the border point device itself.
  • the scalability of the OTN system is good.
  • the embodiment of the present invention also provides a schematic structural diagram of an optical transmission device, as shown in FIG. 4 , including a communication unit 401 and a connection unit 402; wherein:
  • the communication unit is used to: receive the first message sent by the access point device through the port corresponding to the private network identifier, and receive the second message sent by another border point device, the first message includes the service identifier and the user side channel identifier , the second message includes a private network identifier and a service identifier;
  • the connection unit is used to: establish a connection between the user-side channel and the network-side channel according to the first message and the second message, and the network-side channel is located at the optical link between the current border point device and another border point device corresponding to the private network identifier. in the transmission tunnel.
  • connection unit implement related functions in the foregoing methods, which will not be repeated here.
  • the light delivery device is presented in the form of a functional unit.
  • a "unit” here may refer to an application-specific integrated circuit (ASIC), a circuit, a processor and memory executing one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the above functions device.
  • ASIC application-specific integrated circuit
  • processor a memory and a communication interface can be used for implementation.
  • FIG. 5 is a schematic diagram of computer equipment provided by an embodiment of the present invention.
  • the computer device includes at least one processor 501 , a communication bus 502 , a memory 503 and at least one communication interface 504 , and may also include an IO interface 505 .
  • the processor can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the program execution of the present invention.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a communication bus may include a path for transferring information between the above-mentioned components.
  • Communication interface using any device such as a transceiver, used to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (Wireless Local Area Networks, WLAN), etc.
  • RAN radio access network
  • WLAN Wireless Local Area Networks
  • Memory can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types of memory that can store information and instructions
  • a dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be stored by a computer Any other medium, but not limited to.
  • the memory can exist independently and be connected to the processor through the bus. Memory can also be integrated with the processor.
  • the memory is used to store application program codes for executing the solution of the present invention, and the execution is controlled by the processor.
  • the processor is configured to execute application program codes stored in the memory.
  • the processor may include one or more CPUs, and each CPU may be a single-core (single-core) processor or a multi-core (multi-Core) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the computer device may further include an input/output (I/O) interface.
  • the output device may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a cathode ray tube (cathode ray tube, CRT) display device, or a projector (projector), etc.
  • the input device can be mouse, keyboard, touch screen device or sensing device etc.
  • the above computer equipment may be a general computer equipment or a special computer equipment.
  • the computer device can be a desktop computer, a portable computer, a network server, a handheld computer (Personal Digital Assistant, PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device or a device similar to that shown in Figure 5.
  • PDA Personal Digital Assistant
  • the embodiment of the present invention does not limit the type of computer equipment.
  • the optical transmission boundary point device in FIG. 1 may be the device shown in FIG. 5 , and one or more software modules are stored in the memory.
  • the optical transmission device may implement a software module through a processor and program codes in a memory to complete the above method.
  • An embodiment of the present invention also provides a computer storage medium for storing computer software instructions used by the device shown in FIG. 4 or FIG. 5 above, which includes a program designed to execute the above method embodiment.
  • the methods described above can be implemented by executing stored programs.
  • the embodiments of the present invention may be provided as methods, devices (devices), or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein. The computer program is stored/distributed on suitable media, supplied with or as part of other hardware, and may also take other forms of distribution, such as via the Internet or other wired or wireless telecommunication systems.
  • suitable media supplied with or as part of other hardware, and may also take other forms of distribution, such as via the Internet or other wired or wireless telecommunication systems.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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Abstract

The present invention provides a method for communicating optical transport network (OTN) services, which is applied to an OTN system comprising a first boundary point device (BP1) and a second boundary point device (BP2). The method comprises: the BP1 receiving, from a first port corresponding to a private network identifier, a first packet which is sent by a first access point device and comprises a service identifier and a first user side channel identifier; the BP1 sending to the BP2 a second packet comprising the private network identifier and the service identifier; the BP2 receiving, from a second port corresponding to the private network identifier, a third packet which is sent by a second access point device and comprises a service identifier and a second user side channel identifier; the BP2 allocating a network side channel corresponding to the service identifier in an optical transmission tunnel between BP1 and BP2 and corresponding to the private network identifier, and establishing a connection between a second user side channel and the network side channel; the BP2 sending to the BP1 a fourth packet comprising the private network identifier, the service identifier and a network side channel identifier; and the BP1 establishing a connection between the network side channel and a first user side channel according to the fourth packet.

Description

一种连通光传送网业务的方法和设备A method and device for connecting optical transport network services
本申请要求于2021年12月30日提交中国国家知识产权局、申请号202111656180.5、申请名称为“一种连通光传送网业务的方法和设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application with application number 202111656180.5 and titled "A Method and Device for Connecting Optical Transport Network Services" filed with the State Intellectual Property Office of China on December 30, 2021, the entire contents of which are incorporated by reference incorporated in this application.
技术领域technical field
本发明涉及通信领域，尤其涉及一种连通光传送网业务的方法和设备。The invention relates to the communication field, in particular to a method and equipment for connecting optical transport network services.
背景技术Background technique
随着全光业务网的发展，光传送网(Optical Transport Network，OTN)逐步下沉到城域，将覆盖大量边缘节点，并延伸到接入网设备。对这种大规模的网络，运营商通常会划分网络域，例如按照行政管理区域、按照设备供应商、或者按照技术领域进行划分。With the development of the all-optical service network, the Optical Transport Network (OTN) gradually sinks to the metropolitan area, covering a large number of edge nodes and extending to access network equipment. For such a large-scale network, operators usually divide network domains, for example, according to administrative management areas, according to equipment suppliers, or according to technical fields.
分域管理的场景下，出现跨域业务的需求。现有技术一般采用统一网管配置的方法，即部署一个顶层统一的网管控制器，对整个OTN网络的所有域做全局管理，先获取网络中所有设备的相关接口、链路等资源信息，再统一下发相关配置消息打通端到端业务。这种方法管理成本高，灵活性差。In the scenario of domain-specific management, there is a need for cross-domain services. The existing technology generally adopts the method of unified network management configuration, that is, deploys a top-level unified network management controller to perform global management on all domains of the entire OTN network. Send relevant configuration messages to open up end-to-end services. This method has high management costs and poor flexibility.
发明内容Contents of the invention
本发明实施例提供一种连通光传送网业务的方法和设备，建立端到端业务路径不需要额外顶层网管，靠边界点设备本身即可完成跨域业务的连通。Embodiments of the present invention provide a method and device for connecting optical transport network services. The establishment of an end-to-end service path does not require an additional top-level network management, and the connection of cross-domain services can be completed by the border point device itself.
第一方面，本发明实施例提供一种连通光传送网OTN业务的方法，应用于包括第一边界点设备和第二边界点设备的OTN***，包括：第一边界点设备从专网标识对应的第一端口接收第一接入点设备发送的第一报文，第一报文包括业务标识和第一用户侧通道标识；第一边界点设备向第二边界点设备发送第二报文，第二报文包括专网标识、业务标识；第二边界点设备从专网标识对应的第二端口接收第二接入点设备发送的第三报文，第三报文包括业务标识、第二用户侧通道标识；第二边界点设备在专网标识对应的、第一边界点设备和第二边界点设备之间的光传输隧道中分配业务标识对应的网络侧通道，并建立第二用户侧通道与网络侧通道的连接；第二边界点设备向第一边界点设备发送第四报文，第四报文包括专网标识、业务标识、网络侧通道的标识；第一边界点设备根据第四报文，建立网络侧通道与第一用户侧通道的连接。In the first aspect, the embodiment of the present invention provides a method for connecting to an OTN service on an optical transport network, which is applied to an OTN system including a first border point device and a second border point device, including: the first border point device corresponds to the private network identifier The first port of the first access point device receives the first message sent by the first access point device, the first message includes the service identifier and the first user side channel identifier; the first border point device sends the second message to the second border point device, The second message includes a private network identifier and a service identifier; the second boundary point device receives the third message sent by the second access point device from the second port corresponding to the private network identifier, and the third message includes the service identifier, the second User-side channel identifier; the second border point device allocates the network-side channel corresponding to the service identifier in the optical transmission tunnel between the first border point device and the second border point device corresponding to the private network identifier, and establishes a second user-side channel The connection between the channel and the network side channel; the second border point device sends the fourth message to the first border point device, and the fourth message includes the private network identifier, the service identifier, and the identifier of the network side channel; the first border point device according to the first border point device Four packets, establishing a connection between the network side channel and the first user side channel.
通过这样动态分配网络侧通道资源的方法，靠边界点设备本身即可完成跨域业务的连通。 提高了***的灵活性和可扩展性。Through such a method of dynamically allocating network side channel resources, the connection of cross-domain services can be completed by the border point device itself. Improve the flexibility and scalability of the system.
在一个可能的设计中，光传输隧道为光通道数据单元ODU，网络侧通道为光业务单元OSU；或者，光传输隧道为高阶ODU，网络侧通道为低阶ODU。进一步提高了***的灵活性。In a possible design, the optical transmission tunnel is an optical channel data unit ODU, and the network side channel is an optical service unit OSU; or, the optical transmission tunnel is a high-order ODU, and the network side channel is a low-order ODU. Further improve the flexibility of the system.
在又一个可能的设计中，在OTN的开销中承载第一报文、第二报文、第三报文、或者第四报文。第一报文、第二报文、第三报文、或者第四报文为扩展的路径计算单元协议PCEP报文或者边界网关协议BGP报文。这些设计提高了***的兼容性。In yet another possible design, the OTN overhead carries the first packet, the second packet, the third packet, or the fourth packet. The first packet, the second packet, the third packet, or the fourth packet is an extended Path Computation Element Protocol PCEP packet or a Border Gateway Protocol BGP packet. These designs improve the compatibility of the system.
第二方面，本发明实施例提供一种连通光传送网OTN业务的方法，应用于OTN中的边界点设备，包括：接收接入点设备通过专网标识对应的端口发送的第一报文，并接收另一边界点设备发送的第二报文，第一报文包括业务标识和用户侧通道标识，第二报文包括专网标识和业务标识；根据第一报文和第二报文建立用户侧通道与网络侧通道的连接，网络侧通道位于专网标识对应的、本边界点设备和另一边界点设备之间的光传输隧道中。In a second aspect, an embodiment of the present invention provides a method for connecting to an OTN service on an optical transport network, which is applied to a border point device in the OTN, including: receiving the first message sent by the access point device through a port corresponding to the private network identifier, And receive the second message sent by another border point device, the first message includes the service identification and the user side channel identification, and the second message includes the private network identification and the service identification; according to the establishment of the first message and the second message The connection between the user-side channel and the network-side channel, where the network-side channel is located in the optical transmission tunnel between the current border point device and another border point device corresponding to the private network identifier.
同样，通过这样动态分配网络侧通道资源的方法，靠边界点设备本身即可完成跨域业务的连通。提高了***的灵活性和可扩展性。Similarly, through such a method of dynamically allocating network side channel resources, the connection of cross-domain services can be completed by the border point device itself. Improve the flexibility and scalability of the system.
在一个可能的设计中，接收第一报文和第二报文具体包括：接收第一报文，根据专网标识和业务标识确定还未收到第二报文，向另一边界点设备发送包括专网标识和业务标识的第三报文，并接收另一边界点设备返回的第二报文，第二报文包括网络侧通道的标识。这些设计提高了***的灵活性。In a possible design, receiving the first message and the second message specifically includes: receiving the first message, determining that the second message has not been received according to the private network identifier and the service identifier, and sending the message to another border point device The third message including the private network identifier and the service identifier is received, and the second message returned by another border point device is received, and the second message includes the identifier of the network side channel. These designs increase the flexibility of the system.
在又一个可能的设计中，接收第一报文和第二报文具体包括：接收第一报文，根据专网标识和业务标识确定已收到另一边界点设备发送的第二报文；根据第一报文和第二报文建立用户侧通道与网络侧通道的连接具体包括：在光传输隧道中分配业务标识对应的网络侧通道，并根据用户侧通道标识，建立用户侧通道与网络侧通道的连接；方法还包括：向另一边界点设备发送包括专网标识、业务标识、以及网络侧通道标识的第三报文。这些设计提高了***的灵活性。In yet another possible design, receiving the first message and the second message specifically includes: receiving the first message, and determining that the second message sent by another border point device has been received according to the private network identifier and the service identifier; Establishing the connection between the user-side channel and the network-side channel according to the first message and the second message specifically includes: allocating the network-side channel corresponding to the service identifier in the optical transmission tunnel, and establishing the user-side channel and the network-side channel according to the user-side channel identifier. Side channel connection; the method further includes: sending a third message including the private network identifier, the service identifier, and the network side channel identifier to another border point device. These designs increase the flexibility of the system.
同样，在一个可能的设计中，光传输隧道为ODU，网络侧通道为OSU；或者，光传输隧道为高阶ODU，网络侧通道为低阶ODU。以进一步提高了***的灵活性。Likewise, in a possible design, the optical transmission tunnel is an ODU, and the network-side channel is an OSU; or, the optical transmission tunnel is a high-order ODU, and the network-side channel is a low-order ODU. In order to further improve the flexibility of the system.
在又一个可能的设计中，在OTN的开销中承载报文。报文可以是扩展的PCEP报文或者BGP报文。这些设计提高了***的兼容性。In yet another possible design, packets are carried in the overhead of the OTN. The packet can be an extended PCEP packet or a BGP packet. These designs improve the compatibility of the system.
第三方面，本发明实施例提供一种光传送***，包括执行上述第一方面方法中第一边界点设备和第二边界点设备，具体不再赘述。In a third aspect, an embodiment of the present invention provides an optical transmission system, including a first boundary point device and a second boundary point device that implement the method in the first aspect above, and the details are not repeated here.
第四方面，本发明实施例提供一种光传送设备，具有实现上述第二方面方法中光传送边界点设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元，例如包括：通信单元和连接单元，其中通信单元用于：接收接入点设备通过专网标识对应的端口发送的第一报文，并接收另一边界点设备发送的第二报文，第一报文包括业务标识和用户侧通道标识，第二报文包括专网标识和业务标识；连接单元用于：根据第一报文和第二报文建立用户侧通道与网络侧通道的连接，网络侧通道位于专网标识对应的、本边界点设备和另一边界点设备之间的光传输隧道中。In a fourth aspect, an embodiment of the present invention provides an optical transmission device, which has a function of realizing the behavior of the optical transmission boundary point device in the method of the second aspect above. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more units corresponding to the above functions, for example: a communication unit and a connection unit, where the communication unit is used to: receive the first message sent by the access point device through the port corresponding to the private network identifier; text, and receive the second message sent by another border point device, the first message includes the service identifier and the user side channel identifier, the second message includes the private network identifier and the service identifier; the connection unit is used to: according to the first message The text and the second message establish a connection between the user-side channel and the network-side channel, and the network-side channel is located in the optical transmission tunnel between the current border point device and another border point device corresponding to the private network identifier.
在一个可能的设计中，光传送设备的结构中包括处理器和存储器，所述存储器用于存储 执行上述方法的程序代码，所述处理器被配置为用于执行所述存储器中存储的程序。In a possible design, the structure of the optical transmission device includes a processor and a memory, the memory is used to store program codes for executing the above method, and the processor is configured to execute the program stored in the memory.
第五方面，本发明实施例提供了一种计算机存储介质，用于储存为上述光传送设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。In a fifth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the above-mentioned optical transmission device, which includes a program designed to execute the above-mentioned aspect.
本发明实施例提供的技术方案，通过动态分配网络侧通道，建立了端到端业务路径，不需要额外增加顶层网管，靠边界点设备本身即可完成跨域业务的连通。业务可独立配置，当网络规模和业务规模不断扩大时，灵活性高，可扩展性好。In the technical solution provided by the embodiment of the present invention, an end-to-end service path is established by dynamically allocating network side channels, without additional top-level network management, and the connection of cross-domain services can be completed by the boundary point device itself. Services can be configured independently. When the network scale and business scale continue to expand, it has high flexibility and good scalability.
附图说明Description of drawings
图1为本发明实施例提供的一种OTN网络***架构示意图；FIG. 1 is a schematic diagram of an OTN network system architecture provided by an embodiment of the present invention;
图2为本发明实施例提供的一种连通OTN业务的流程示意图；FIG. 2 is a schematic flow diagram of a connection to an OTN service provided by an embodiment of the present invention;
图3为本发明实施例提供的另一种连通OTN业务的流程示意图；FIG. 3 is a schematic flow diagram of another connected OTN service provided by an embodiment of the present invention;
图4为本发明实施例提供的一种光传送设备的结构示意图；FIG. 4 is a schematic structural diagram of an optical transmission device provided by an embodiment of the present invention;
图5为本发明实施例提供的一种光传送设备的另一结构示意图。Fig. 5 is another schematic structural diagram of an optical transmission device provided by an embodiment of the present invention.
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。本领域普通技术人员可知，随着技术发展和新场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe in detail the embodiments of the present invention in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present application, not all of them. Those of ordinary skill in the art know that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
本发明实施例提供的连通OTN业务的方法应用于包含多个域的OTN***中。如图1所示为本发明实施例提供的一个OTN***的架构图。OTN***包括1个中间域，以及通过中间域连接的4个边缘域N1、N2、N3、N4。中间域包括3个边界点(Border Ponit，BP)设备BP1、BP2、BP3，分别与4个边缘域N1、N2、N3、N4中的接入点(Access Point，AP)设备AP1、AP2、AP3、AP4连接。OTN业务连通后，边缘域N1、N2、N3、N4中的应用设备通过接入点设备、边界点设备实现互联。The method for connecting an OTN service provided by the embodiment of the present invention is applied to an OTN system including multiple domains. FIG. 1 is an architecture diagram of an OTN system provided by an embodiment of the present invention. The OTN system includes an intermediate domain and four edge domains N1, N2, N3, and N4 connected through the intermediate domain. The intermediate domain includes 3 border point (Border Ponit, BP) devices BP1, BP2, BP3, respectively connected with the access point (Access Point, AP) devices AP1, AP2, AP3 in the 4 edge domains N1, N2, N3, N4 , AP4 connection. After the OTN service is connected, the application devices in the edge domains N1, N2, N3, and N4 are interconnected through access point devices and border point devices.
本发明实施例提供的连通OTN业务的方法中，多个边缘域中的应用设备和接入点设备组成一个专网。例如，图1所示***中，可以由N1和N2组成一个专网；也可以由N1、N2、N4组成一个专网。边缘域的接入点设备与中间域的边界点设备连接，中间域的边界点设备可以连接多个边缘域，支持多个专网。例如图1中，BP1通过两个端口连接两个边缘域N1和N4。In the method for connecting OTN services provided by the embodiments of the present invention, application devices and access point devices in multiple edge domains form a private network. For example, in the system shown in Figure 1, N1 and N2 can form a private network; N1, N2, and N4 can also form a private network. The access point device in the edge domain is connected to the border point device in the middle domain, and the border point device in the middle domain can connect to multiple edge domains and support multiple private networks. For example, in Figure 1, BP1 connects two edge domains N1 and N4 through two ports.
专网内可以支持多个业务，例如，N1和N2组成的专网中，可以由N1中的应用设备E1与N2中的应用设备E2构成业务A；N1中的应用设备E1、E5与N2中的应用设备E2、E6构成业务B。通过不同的专网标识与业务标识组合即可区分端到端业务。Multiple services can be supported in the private network. For example, in the private network composed of N1 and N2, service A can be composed of application equipment E1 in N1 and application equipment E2 in N2; application equipment E1, E5 in N1 and application equipment in N2 The application equipment E2 and E6 constitute the service B. End-to-end services can be distinguished through different combinations of private network identifiers and service identifiers.
应用于上述图1所示的OTN***中，本发明的实施例提供了一种连通OTN业务的方法。如图2所示，以边缘域N1和N2组成一个专网“1”、应用设备E1、E2构成专网中业务“A”为例，实现端到端业务的连通。该方法具体包括下列步骤：Applied to the OTN system shown in FIG. 1 above, the embodiments of the present invention provide a method for connecting OTN services. As shown in Figure 2, take the edge domains N1 and N2 to form a private network "1" and the application equipment E1 and E2 to form a service "A" in the private network as an example to realize end-to-end service connectivity. The method specifically includes the following steps:
S201，在边界点设备配置专网标识及对应端口，并配置与专网标识对应的边界点间的光传输隧道。S201. Configure private network identifiers and corresponding ports on border point devices, and configure optical transmission tunnels between border points corresponding to the private network identifiers.
在专网连接的边界点设备上配置专网标识及对应端口，对应端口连接专网包含的边缘域的接入点设备。图2所示例子中，在BP1中配置专网标识ID及对应的连接AP1的端口。在BP2中配置专网标识ID及对应的连接AP2的端口。专网ID可以由字母或数字组成。例如专网ID为“1”。进一步，在BP1上配置专网对应的连接BP2的光传输隧道，在BP2上配置专网对应的连接BP1的光传输隧道。光传输隧道可以是ODUk(Optical channel Data Unit，光通道数据单元)隧道，或者OSU(Optical Service Unit，光业务单元)隧道。光传输隧道包括多个网络侧通道(network-to-network interface，NNI)，用于支持专网中多个业务的数据访问需求。可以通过网管***配置，也可以直接在边界点设备上配置。Configure the private network identifier and the corresponding port on the border point device connected to the private network, and connect the corresponding port to the access point device of the edge domain included in the private network. In the example shown in Figure 2, the private network ID and the corresponding port connected to AP1 are configured in BP1. Configure the private network ID and the corresponding port connected to AP2 in BP2. The private network ID can consist of letters or numbers. For example, the private network ID is "1". Further, an optical transmission tunnel corresponding to the private network connected to BP2 is configured on BP1, and an optical transmission tunnel corresponding to the private network connected to BP1 is configured on BP2. The optical transmission tunnel may be an ODUk (Optical channel Data Unit, optical channel data unit) tunnel, or an OSU (Optical Service Unit, optical service unit) tunnel. The optical transmission tunnel includes multiple network-to-network interface (NNI), which are used to support the data access requirements of multiple services in the private network. It can be configured through the network management system or directly on the border point device.
S202，在边缘域N1中配置业务。S202. Configure services in the edge domain N1.
配置后，边缘域中应用设备E1可通过接入点设备AP1与域外连接。AP1中配置了业务标识ID。业务ID可以由字母或数字组成，例如业务ID为“A”。业务ID可以为专网内唯一，也可以为全局唯一。AP1中还配置了与业务ID对应的连接BP1的第一用户侧通道(user-network interface，UNI)的标识，例如第一用户侧通道标识为OSU通道号“1.1”。After configuration, the application equipment E1 in the edge domain can be connected to outside the domain through the access point device AP1. The service ID is configured in AP1. The business ID can be composed of letters or numbers, for example, the business ID is "A". The service ID can be unique within the private network or globally unique. The identifier of the first user-network interface (UNI) connected to BP1 corresponding to the service ID is also configured in AP1, for example, the identifier of the first user-side channel is the OSU channel number "1.1".
S203，AP1向BP1发送第一报文。S203, AP1 sends the first packet to BP1.
发送的第一报文中包括了业务ID“A”和第一用户侧通道标识“1.1”。第一报文可以通过扩展PCEP(Path Computation Element Protocol，路径计算单元协议)或BGP(Border Gateway Protocol，边界网关协议)实现，承载在OTN的开销中，如GCC0/1/2，下文出现的“报文”也同样。The first message sent includes the service ID "A" and the first user-side channel identifier "1.1". The first message can be implemented by extending PCEP (Path Computation Element Protocol) or BGP (Border Gateway Protocol, Border Gateway Protocol), and carried in the overhead of OTN, such as GCC0/1/2, " Message" is the same.
S204，BP1向BP2发送第二报文。S204, BP1 sends the second packet to BP2.
BP1根据接收第一报文的端口，确定第一报文与专网ID“1”关联，BP1保存专网ID、业务ID和第一用户侧通道标识的对应关系。BP1向同一专网的其他边界点设备发送第二报文，以通知这些边界点设备业务相关信息。第二报文包括了专网ID、业务ID、以及本设备标识“BP1”。BP1 determines that the first message is associated with the private network ID "1" according to the port receiving the first message, and BP1 saves the corresponding relationship between the private network ID, the service ID, and the first user-side channel identifier. BP1 sends the second message to other border point devices on the same private network, so as to notify these border point devices of service-related information. The second message includes the private network ID, the service ID, and the device identification "BP1".
BP2收到第二报文后，在本地保存专网ID、业务ID、及边界点设备标识“BP1”的对应关系。After receiving the second message, BP2 locally saves the corresponding relationship between the private network ID, the service ID, and the border point device identifier "BP1".
S205，在边缘域N2中配置业务。S205. Configure services in the edge domain N2.
与上述步骤S202类似，配置后，边缘域中应用设备E2可通过接入点设备AP2与域外连接。AP2中配置了业务标识ID“A”。AP2中还配置了与业务ID对应的连接BP2的第二用户侧通道(user-network interface，UNI)的标识，例如第二用户侧通道标识为OSU通道号“2.2”。Similar to the above step S202, after configuration, the application device E2 in the edge domain can be connected to outside the domain through the access point device AP2. The service ID "A" is configured on AP2. The identifier of the second user-network interface (UNI) connected to BP2 corresponding to the service ID is also configured in AP2, for example, the identifier of the second user-side channel is the OSU channel number "2.2".
S206，AP2向BP2发送第三报文。S206, AP2 sends the third packet to BP2.
与上述步骤S203类似，发送的第三报文中包括了业务ID“A”和第二用户侧通道标识“2.2”。第三报文同样可以通过扩展PCEP或BGP实现。Similar to the above step S203, the third message sent includes the service ID "A" and the second user side channel identifier "2.2". The third packet can also be implemented by extending PCEP or BGP.
S207，BP2连接第二用户侧通道和网络侧通道。S207, BP2 connects the second user-side channel and the network-side channel.
BP2根据接收第三报文的端口，确定第三报文与专网ID“1”关联，进一步根据第三报文中包括了业务ID“A”，以及前述步骤204中BP2接收第二报文后保存的专网ID、业务ID、及“BP1”的对应关系，确定需为业务“A”建立BP1和BP2之间的连接。BP2从BP1和BP2之间的光传输隧道中选择一个网络侧通道NNI，例如，通道号为“x”。光传输隧道为光通道 数据单元ODU，网络侧通道为光业务单元OSU；或者，光传输隧道为高阶ODU，网络侧通道为低阶ODU。BP2 determines that the third message is associated with the private network ID "1" according to the port receiving the third message, and further according to the service ID "A" included in the third message, and the second message received by BP2 in the aforementioned step 204 After saving the corresponding relationship between private network ID, service ID and "BP1", it is determined that a connection between BP1 and BP2 needs to be established for service "A". BP2 selects a network-side channel NNI from the optical transmission tunnel between BP1 and BP2, for example, the channel number is "x". The optical transmission tunnel is an optical channel data unit ODU, and the network side channel is an optical service unit OSU; or, the optical transmission tunnel is a high-order ODU, and the network side channel is a low-order ODU.
确定网络侧通道NNI后，BP2在本机生成交叉映射路径，连接第二用户侧通道“2.2”和网络侧通道“x”。After determining the NNI of the network side channel, BP2 locally generates a cross mapping path to connect the second user side channel "2.2" and the network side channel "x".
S208，BP2向BP1发送第四报文。S208, BP2 sends the fourth packet to BP1.
BP2向BP1发送第四报文，以通知BP1业务相关的NNI信息。第四报文包括专网ID“1”、业务ID“A”、网络侧通道的标识“x”。BP2 sends a fourth message to BP1 to notify BP1 of service-related NNI information. The fourth message includes the private network ID "1", the service ID "A", and the identifier "x" of the network side channel.
S209，BP1连接网络侧通道和第一用户侧通道。S209, BP1 connects the network side channel and the first user side channel.
BP1根据第四报文中的信息，获知BP2已选择了业务“A”的网络侧通道“x”，BP1在本机生成交叉映射路径，连接网络侧通道“x”和第一用户侧通道“1.1”，即前述步骤S202所述的BP1连接AP1的第一用户侧通道。According to the information in the fourth message, BP1 learns that BP2 has selected the network-side channel "x" of service "A", and BP1 generates a cross mapping path locally to connect the network-side channel "x" and the first user-side channel "x". 1.1", that is, the first user-side channel connecting BP1 to AP1 described in step S202 above.
通过上述方法，N1到N2之间建立了端到端业务路径，不需要额外增加顶层网管，靠边界点设备本身即可完成跨域业务的连通。不同边缘域内的业务可独立配置，当网络规模不断扩大时，可扩展性好。Through the above method, an end-to-end service path is established between N1 and N2, without additional top-level network management, and the cross-domain service connection can be completed by the boundary point device itself. Services in different edge domains can be configured independently, and the scalability is good when the network scale continues to expand.
在一些场景下，BP1可以直接连接用户的总部网络或云***，这时就不必执行上述S203步骤，只需在BP1直接配置业务ID和用户侧通道即可，具体不再赘述。In some scenarios, BP1 can be directly connected to the user's headquarters network or cloud system. In this case, it is not necessary to perform the above step S203. It is only necessary to directly configure the service ID and user side channel in BP1, and the details will not be repeated.
图2所示实施例中，因为N1和N2配置专网内业务的时间先后不同，使得边界点设备BP1和BP2执行消息收发处理、连接网络侧通道与用户侧通道等步骤的时间先后不同。一般的，中间域的边界点设备都具有相同的功能，它们接收AP设备发送的消息可能在先，也可能中后。也就是说，一个边界点设备BP可能执行的是图2中BP1的处理步骤，也可能执行的是图2中BP2的处理步骤。In the embodiment shown in FIG. 2 , because N1 and N2 configure services in the private network at different times, the border point devices BP1 and BP2 perform message sending and receiving processing, and connect the network-side channel and the user-side channel at different times. Generally, the border point devices in the intermediate domain all have the same function, and they may receive the message sent by the AP device first or later. That is to say, a border point device BP may execute the processing steps of BP1 in FIG. 2 , or may execute the processing steps of BP2 in FIG. 2 .
如图3所示，本发明实施例提供应用于边界点设备BP的连通OTN业务的方法，BP中已配置了专网标识和对应的端口，并配置了与OTN中间域中另一边界点设备之间的光传输隧道。该方法包括下列步骤：As shown in Figure 3, the embodiment of the present invention provides a method for connecting OTN services applied to a border point device BP, where a private network identifier and a corresponding port have been configured in the BP, and another border point device in the OTN intermediate domain has been configured Light transmission tunnel between. The method includes the following steps:
S301，接收接入点设备发送的第一报文和所述另一边界点设备发送的第二报文，第一报文包括业务标识、用户侧通道的标识，第二报文包括所述专网标识和业务标识；S301. Receive the first packet sent by the access point device and the second packet sent by the other border point device, where the first packet includes the service identifier and the identifier of the user-side channel, and the second packet includes the dedicated Network logo and business logo;
BP可能先收到接入点设备的报文，如图2中的BP1，也可能先收到另一BP发送的报文，如图2中的BP2。A BP may first receive a message from an access point device, such as BP1 in Figure 2, or may receive a message from another BP first, such as BP2 in Figure 2.
如果BP收到接入点设备发来的第一报文后，根据本地存储的信息，确定尚未收到另一BP发送的第二报文，则与前述步骤S204相同，向所述另一BP发送报文，携带专网ID、业务ID、以及本设备标识，以通知对端“本端有业务连接需求”，BP等待接收对端返回的第二报文。如果BP收到接入点设备发来的第一报文后，根据本地存储的信息，确定已收到另一BP发送的第二报文，则说明已具备执行后续连接用户侧通道与网络侧通道的条件。If the BP determines that the second message sent by another BP has not been received according to the locally stored information after receiving the first message sent by the access point device, then it is the same as the aforementioned step S204, and sends a message to the other BP Send a message, carrying the private network ID, service ID, and local device identification, to notify the peer end that "this end has a service connection requirement", and the BP waits to receive the second message returned by the peer end. If the BP determines that it has received the second message sent by another BP according to the locally stored information after receiving the first message sent by the access point device, it means that it has the ability to perform subsequent connection between the user side channel and the network side. condition of the channel.
如果BP收到另一BP发来的报文后，根据本地存储的信息，确定尚未收到AP发送的报文，则说明连接本设备的AP还没有“业务连接需求”，BP等待接收本设备连接的AP发送报文，收到后，连接用户侧通道与网络侧通道，并通知另一BP也进行连接以建立端到端业务路径。如果BP收到另一BP发来的报文后，根据本地存储的信息，确定已收到AP发送的报文，则说明已具备执行后续连接用户侧通道与网络侧通道的条件。If the BP receives a message from another BP, it determines that it has not received the message from the AP according to the locally stored information, which means that the AP connected to this device has no "business connection requirements", and BP is waiting to receive this device. The connected AP sends a message, and after receiving it, connects the user-side channel and the network-side channel, and notifies another BP to also connect to establish an end-to-end service path. If the BP receives a message from another BP and determines that it has received the message from the AP according to the locally stored information, it means that the conditions for subsequent connection between the user-side channel and the network-side channel are met.
S302，根据所述第一报文和第二报文建立所述用户侧通道与网络侧通道的连接，所述网络侧通道位于所述光传输隧道中。S302. Establish a connection between the user-side channel and the network-side channel according to the first message and the second message, where the network-side channel is located in the optical transmission tunnel.
通过上述方法，多个BP设备可建立端到端业务路径，不需要额外增加顶层网管，仅靠边界点设备本身即可完成跨域业务的连通。OTN***的可扩展性好。Through the above method, multiple BP devices can establish an end-to-end service path without additional top-level network management, and the cross-domain service connection can be completed only by the border point device itself. The scalability of the OTN system is good.
本发明实施例还提供了一种光传送设备的结构示意图，如图4所示，包括通信单元401和连接单元402；其中：The embodiment of the present invention also provides a schematic structural diagram of an optical transmission device, as shown in FIG. 4 , including a communication unit 401 and a connection unit 402; wherein:
通信单元用于：接收接入点设备通过专网标识对应的端口发送的第一报文，并接收另一边界点设备发送的第二报文，第一报文包括业务标识和用户侧通道标识，第二报文包括专网标识和业务标识；The communication unit is used to: receive the first message sent by the access point device through the port corresponding to the private network identifier, and receive the second message sent by another border point device, the first message includes the service identifier and the user side channel identifier , the second message includes a private network identifier and a service identifier;
连接单元用于：根据第一报文和第二报文建立用户侧通道与网络侧通道的连接，网络侧通道位于专网标识对应的、本边界点设备和另一边界点设备之间的光传输隧道中。The connection unit is used to: establish a connection between the user-side channel and the network-side channel according to the first message and the second message, and the network-side channel is located at the optical link between the current border point device and another border point device corresponding to the private network identifier. in the transmission tunnel.
进一步，通信单元和连接单元实现前述方法中的相关功能，此处不再赘述。Further, the communication unit and the connection unit implement related functions in the foregoing methods, which will not be repeated here.
在实施例中，光传送设备是以功能单元的形式来呈现。这里的“单元”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到可以采用处理器、存储器和通信接口来实现。In an embodiment, the light delivery device is presented in the form of a functional unit. A "unit" here may refer to an application-specific integrated circuit (ASIC), a circuit, a processor and memory executing one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the above functions device. In a simple embodiment, those skilled in the art can imagine that a processor, a memory and a communication interface can be used for implementation.
本发明实施例中的光传送设备还可以以图5中的计算机设备(或***)的方式来实现。图5所示为本发明实施例提供的计算机设备示意图。该计算机设备包括至少一个处理器501，通信总线502，存储器503以及至少一个通信接口504，还可以包括IO接口505。The optical transmission device in the embodiment of the present invention can also be implemented in the form of the computer device (or system) in FIG. 5 . FIG. 5 is a schematic diagram of computer equipment provided by an embodiment of the present invention. The computer device includes at least one processor 501 , a communication bus 502 , a memory 503 and at least one communication interface 504 , and may also include an IO interface 505 .
处理器可以是一个通用中央处理器(CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本发明方案程序执行的集成电路。The processor can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the program execution of the present invention.
通信总线可包括一通路，在上述组件之间传送信息。A communication bus may include a path for transferring information between the above-mentioned components.
通信接口，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(RAN)，无线局域网(Wireless Local Area Networks，WLAN)等。Communication interface, using any device such as a transceiver, used to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (Wireless Local Area Networks, WLAN), etc.
存储器可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过总线与处理器相连接。存储器也可以和处理器集成在一起。Memory can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types of memory that can store information and instructions A dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, optical disc storage ( including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be stored by a computer Any other medium, but not limited to. The memory can exist independently and be connected to the processor through the bus. Memory can also be integrated with the processor.
其中，所述存储器用于存储执行本发明方案的应用程序代码，并由处理器来控制执行。所述处理器用于执行所述存储器中存储的应用程序代码。Wherein, the memory is used to store application program codes for executing the solution of the present invention, and the execution is controlled by the processor. The processor is configured to execute application program codes stored in the memory.
在具体实现中，处理器可以包括一个或多个CPU，每个CPU可以是一个单核(single-core)处理器，也可以是一个多核(multi-Core)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。In a specific implementation, the processor may include one or more CPUs, and each CPU may be a single-core (single-core) processor or a multi-core (multi-Core) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
在具体实现中，作为一种实施例，该计算机设备还可以包括输入/输出(I/O)接口。例如，输出设备可以是液晶显示器(liquid crystal display，LCD),发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备可以是鼠标、键盘、触摸屏设备或传感设备等。In a specific implementation, as an embodiment, the computer device may further include an input/output (I/O) interface. For example, the output device may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a cathode ray tube (cathode ray tube, CRT) display device, or a projector (projector), etc. . The input device can be mouse, keyboard, touch screen device or sensing device etc.
上述的计算机设备可以是一个通用计算机设备或者是一个专用计算机设备。在具体实现中，计算机设备可以是台式机、便携式电脑、网络服务器、掌上电脑(Personal Digital Assistant，PDA)、移动手机、平板电脑、无线终端设备、通信设备、嵌入式设备或有图5中类似结构的设备。本发明实施例不限定计算机设备的类型。The above computer equipment may be a general computer equipment or a special computer equipment. In a specific implementation, the computer device can be a desktop computer, a portable computer, a network server, a handheld computer (Personal Digital Assistant, PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device or a device similar to that shown in Figure 5. Structural equipment. The embodiment of the present invention does not limit the type of computer equipment.
如图1中的光传送边界点设备可以为图5所示的设备，存储器中存储了一个或多个软件模块。光传送设备可以通过处理器以及存储器中的程序代码来实现软件模块，完成上述方法。The optical transmission boundary point device in FIG. 1 may be the device shown in FIG. 5 , and one or more software modules are stored in the memory. The optical transmission device may implement a software module through a processor and program codes in a memory to complete the above method.
本发明实施例还提供了一种计算机存储介质，用于储存为上述图4或图5所示的设备所用的计算机软件指令，其包含用于执行上述方法实施例所设计的程序。通过执行存储的程序，可以实现上述方法。An embodiment of the present invention also provides a computer storage medium for storing computer software instructions used by the device shown in FIG. 4 or FIG. 5 above, which includes a program designed to execute the above method embodiment. The methods described above can be implemented by executing stored programs.
尽管在此结合各实施例对本发明进行了描述，然而，在实施所要求保护的本发明过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。Although the present invention has been described in conjunction with various embodiments herein, in the process of implementing the claimed invention, those skilled in the art can understand and Other variations of the disclosed embodiments are implemented. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that these measures cannot be combined to advantage.
本领域技术人员应明白，本发明的实施例可提供为方法、装置(设备)、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。计算机程序存储/分布在合适的介质中，与其它硬件一起提供或作为硬件的一部分，也可以采用其他分布形式，如通过Internet或其它有线或无线电信***。Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, devices (devices), or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein. The computer program is stored/distributed on suitable media, supplied with or as part of other hardware, and may also take other forms of distribution, such as via the Internet or other wired or wireless telecommunication systems.
本发明是参照本发明实施例的方法、装置(设备)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention is described with reference to flowcharts and/or block diagrams of methods, apparatus (device) and computer program products according to embodiments of the present invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多 个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.
尽管结合具体特征及其实施例对本发明进行了描述，显而易见的，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本发明的示例性说明，且视为已覆盖本发明范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。Although the invention has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made thereto. Accordingly, the specification and drawings are merely illustrative of the invention as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (20)

  1. 一种连通光传送网OTN业务的方法，应用于包括第一边界点设备和第二边界点设备的OTN***，其特征在于，包括：A method for connecting an optical transport network OTN service, applied to an OTN system including a first border point device and a second border point device, is characterized in that it includes:
    所述第一边界点设备从专网标识对应的第一端口接收第一接入点设备发送的第一报文，所述第一报文包括业务标识和第一用户侧通道标识；The first border point device receives a first message sent by the first access point device from a first port corresponding to the private network identifier, and the first message includes a service identifier and a first user-side channel identifier;
    所述第一边界点设备向所述第二边界点设备发送第二报文，所述第二报文包括所述专网标识、所述业务标识；The first border point device sends a second message to the second border point device, where the second message includes the private network identifier and the service identifier;
    所述第二边界点设备从所述专网标识对应的第二端口接收第二接入点设备发送的第三报文，所述第三报文包括所述业务标识、第二用户侧通道标识；The second boundary point device receives a third packet sent by the second access point device from the second port corresponding to the private network identifier, and the third packet includes the service identifier, the second user-side channel identifier ;
    所述第二边界点设备在所述专网标识对应的、所述第一边界点设备和所述第二边界点设备之间的光传输隧道中分配所述业务标识对应的网络侧通道，并建立第二用户侧通道与所述网络侧通道的连接；The second border point device allocates the network side channel corresponding to the service identifier in the optical transmission tunnel between the first border point device and the second border point device corresponding to the private network identifier, and establishing a connection between the second user-side channel and the network-side channel;
    所述第二边界点设备向所述第一边界点设备发送第四报文，所述第四报文包括所述专网标识、所述业务标识、所述网络侧通道的标识；The second border point device sends a fourth message to the first border point device, where the fourth message includes the private network identifier, the service identifier, and the identifier of the network side channel;
    所述第一边界点设备根据所述第四报文，建立所述网络侧通道与第一用户侧通道的连接。The first boundary point device establishes a connection between the network-side channel and the first user-side channel according to the fourth packet.
  2. 如权利要求1所述的方法，其特征在于，所述光传输隧道为光通道数据单元ODU，所述网络侧通道为光业务单元OSU；或者，所述光传输隧道为高阶ODU，所述网络侧通道为低阶ODU。The method according to claim 1, wherein the optical transmission tunnel is an optical channel data unit (ODU), and the network side channel is an optical service unit (OSU); or, the optical transmission tunnel is a high-order ODU, and the The network side channel is a low-order ODU.
  3. 如权利要求1或2所述的方法，其特征在于，在OTN的开销中承载所述第一报文、第二报文、第三报文、或者第四报文。The method according to claim 1 or 2, characterized in that the first packet, the second packet, the third packet, or the fourth packet are carried in OTN overhead.
  4. 如权利要求1至3任一项所述的方法，其特征在于，所述第一报文、第二报文、第三报文、或者第四报文为扩展的路径计算单元协议PCEP报文或者边界网关协议BGP报文。The method according to any one of claims 1 to 3, wherein the first message, the second message, the third message, or the fourth message is an extended Path Computation Element Protocol (PCEP) message Or Border Gateway Protocol BGP message.
  5. 一种连通光传送网OTN业务的方法，应用于OTN中的边界点设备，其特征在于，包括：A method for connecting optical transport network OTN services, applied to boundary point equipment in OTN, characterized in that it includes:
    接收接入点设备通过专网标识对应的端口发送的第一报文，并接收另一边界点设备发送的第二报文，所述第一报文包括所述业务标识和用户侧通道标识，所述第二报文包括所述专网标识和业务标识；receiving the first message sent by the access point device through the port corresponding to the private network identifier, and receiving the second message sent by another border point device, where the first message includes the service identifier and the user-side channel identifier, The second message includes the private network identifier and the service identifier;
    根据所述第一报文和第二报文建立用户侧通道与网络侧通道的连接，所述网络侧通道位于所述专网标识对应的、本边界点设备和所述另一边界点设备之间的光传输隧道中。Establish a connection between the user-side channel and the network-side channel according to the first message and the second message, and the network-side channel is located between the current border point device and the other border point device corresponding to the private network identifier in the optical transmission tunnel between them.
  6. 如权利要求5所述的方法，其特征在于，所述接收所述第一报文和所述第二报文具体包括：接收所述第一报文，根据所述专网标识和所述业务标识确定还未收到所述第二报文，向所述另一边界点设备发送包括所述专网标识和所述业务标识的第三报文，并接收所述另一边界点设备返回的第二报文，所述第二报文包括所述网络侧通道的标识。The method according to claim 5, wherein the receiving the first message and the second message specifically comprises: receiving the first message, according to the private network identifier and the service Identify and determine that the second message has not been received, send a third message including the private network identifier and the service identifier to the other border point device, and receive the returned message from the other border point device A second packet, where the second packet includes the identifier of the network side channel.
  7. 如权利要求5所述的方法，其特征在于，所述接收所述第一报文和所述第二报文具体包括：接收所述第一报文，根据所述专网标识和所述业务标识确定已收到所述另一边界点设备发送的第二报文；The method according to claim 5, wherein the receiving the first message and the second message specifically comprises: receiving the first message, according to the private network identifier and the service identifying and determining that the second packet sent by the other border point device has been received;
    所述根据第一报文和第二报文建立所述用户侧通道与网络侧通道的连接具体包括：在 所述光传输隧道中分配所述业务标识对应的网络侧通道，并根据所述用户侧通道标识，建立所述用户侧通道与网络侧通道的连接；The establishment of the connection between the user side channel and the network side channel according to the first message and the second message specifically includes: allocating the network side channel corresponding to the service identifier in the optical transmission tunnel, and according to the user A side channel identifier, establishing a connection between the user side channel and the network side channel;
    所述方法还包括：向所述另一边界点设备发送包括所述专网标识、所述业务标识、以及所述网络侧通道标识的第三报文。The method further includes: sending a third message including the private network identifier, the service identifier, and the network-side channel identifier to the another border point device.
  8. 如权利要求5至7任一项所述的方法，其特征在于，所述光传输隧道为光通道数据单元ODU，所述网络侧通道为光业务单元OSU；或者，所述光传输隧道为高阶ODU，所述网络侧通道为低阶ODU。The method according to any one of claims 5 to 7, wherein the optical transmission tunnel is an optical channel data unit (ODU), and the network side channel is an optical service unit (OSU); or, the optical transmission tunnel is a high-speed order ODU, and the network side channel is a lower order ODU.
  9. 如权利要求5至8任一项所述的方法，其特征在于，在OTN的开销中承载所述第一报文、所述第二报文、或者所述第三报文。The method according to any one of claims 5 to 8, wherein the OTN overhead carries the first packet, the second packet, or the third packet.
  10. 如权利要求5至9任一项所述的方法，其特征在于，所述第一报文、所述第二报文或者所述第三报文为扩展的路径计算单元协议PCEP报文或者边界网关协议BGP报文。The method according to any one of claims 5 to 9, wherein the first message, the second message or the third message is an extended Path Computation Element Protocol (PCEP) message or boundary Gateway Protocol BGP packets.
  11. 一种光传送***，其特征在于，包括第一边界点设备和第二边界点设备，其中：An optical transmission system, characterized by comprising a first boundary point device and a second boundary point device, wherein:
    所述第一边界点设备用于；从专网标识对应的第一端口接收第一接入点设备发送的第一报文，向所述第二边界点设备发送第二报文，所述第一报文包括业务标识和第一用户侧通道标识，所述第二报文包括所述专网标识、所述业务标识；The first border point device is configured to: receive the first message sent by the first access point device from the first port corresponding to the private network identifier, and send a second message to the second border point device, and the first A message includes a service identifier and a first user-side channel identifier, and the second message includes the private network identifier and the service identifier;
    所述第二边界点设备用于：接收所述第二报文，从所述专网标识对应的第二端口接收第二接入点设备发送的第三报文，所述第三报文包括所述业务标识、第二用户侧通道标识，在所述专网标识对应的、所述第一边界点设备和所述第二边界点设备之间的光传输隧道中分配所述业务标识对应的网络侧通道，并建立第二用户侧通道与所述网络侧通道的连接，向所述第一边界点设备发送第四报文，所述第四报文包括所述专网标识、所述业务标识、所述网络侧通道的标识；The second boundary point device is configured to: receive the second message, receive a third message sent by the second access point device from a second port corresponding to the private network identifier, and the third message includes The service identifier and the second user-side channel identifier are allocated in the optical transmission tunnel corresponding to the private network identifier and between the first border point device and the second border point device. A network-side channel, and establish a connection between the second user-side channel and the network-side channel, and send a fourth message to the first boundary point device, where the fourth message includes the private network identifier, the service Identification, identification of the network side channel;
    所述第一边界点设备还用于：根据所述第四报文，建立所述网络侧通道与第一用户侧通道的连接。The first boundary point device is further configured to: establish a connection between the network-side channel and the first user-side channel according to the fourth packet.
  12. 如权利要求11所述的OTN***，其特征在于，所述光传输隧道为光通道数据单元ODU，所述网络侧通道为光业务单元OSU；或者，所述光传输隧道为高阶ODU，所述网络侧通道为低阶ODU。The OTN system according to claim 11, wherein the optical transmission tunnel is an optical channel data unit (ODU), and the network side channel is an optical service unit (OSU); or, the optical transmission tunnel is a high-order ODU, so The above-mentioned network side channel is a low-order ODU.
  13. 如权利要求11或12所述的OTN***，其特征在于，在OTN的开销中承载所述第一报文、第二报文、第三报文、或者第四报文。The OTN system according to claim 11 or 12, wherein the OTN overhead carries the first packet, the second packet, the third packet, or the fourth packet.
  14. 如权利要求11至13任一项所述的OTN***，其特征在于，所述第一报文、第二报文、第三报文、或者第四报文为扩展的路径计算单元协议PCEP报文或者边界网关协议BGP报文。The OTN system according to any one of claims 11 to 13, wherein the first message, the second message, the third message, or the fourth message is an extended Path Computation Element Protocol (PCEP) message text or Border Gateway Protocol BGP packets.
  15. 一种光传送设备，其特征在于，包括：通信单元、连接单元，其中，An optical transmission device, characterized by comprising: a communication unit and a connection unit, wherein,
    所述通信单元用于：接收接入点设备通过专网标识对应的端口发送的第一报文，并接收另一边界点设备发送的第二报文，所述第一报文包括所述业务标识和用户侧通道标识，所述第二报文包括所述专网标识和业务标识；The communication unit is configured to: receive the first message sent by the access point device through the port corresponding to the private network identifier, and receive the second message sent by another border point device, the first message includes the service an identifier and a user-side channel identifier, the second message includes the private network identifier and the service identifier;
    所述连接单元用于：根据所述第一报文和第二报文建立用户侧通道与网络侧通道的连接，所述网络侧通道位于所述专网标识对应的、本边界点设备和所述另一边界点设备之间的光传输隧道中。The connection unit is configured to: establish a connection between the user-side channel and the network-side channel according to the first message and the second message, and the network-side channel is located at the boundary point device corresponding to the private network identifier and the In the optical transmission tunnel between the other boundary point devices mentioned above.
  16. 如权利要求15所述的光传送设备，其特征在于，所述通信单元具体用于：接收所 述第一报文，根据所述专网标识和所述业务标识确定还未收到所述第二报文，向所述另一边界点设备发送包括所述专网标识和所述业务标识的第三报文，并接收所述另一边界点设备返回的第二报文，所述第二报文包括所述网络侧通道的标识。The optical transmission device according to claim 15, wherein the communication unit is specifically configured to: receive the first message, and determine that the second message has not been received according to the private network identifier and the service identifier second message, sending a third message including the private network identifier and the service identifier to the other border point device, and receiving a second message returned by the other border point device, the second The message includes the identifier of the network side channel.
  17. 如权利要求15所述的光传送设备，其特征在于，所述通信单元具体用于：接收所述第一报文，根据所述专网标识和所述业务标识确定已收到所述另一边界点设备发送的第二报文；The optical transmission device according to claim 15, wherein the communication unit is specifically configured to: receive the first message, and determine that the other packet has been received according to the private network identifier and the service identifier the second packet sent by the border point device;
    所述连接单元具体用于：在所述光传输隧道中分配所述业务标识对应的网络侧通道，并根据所述用户侧通道标识，建立所述用户侧通道与网络侧通道的连接；The connection unit is specifically configured to: allocate the network-side channel corresponding to the service identifier in the optical transmission tunnel, and establish a connection between the user-side channel and the network-side channel according to the user-side channel identifier;
    所述通信单元还用于：向所述另一边界点设备发送包括所述专网标识、所述业务标识、以及所述网络侧通道标识的第三报文。The communication unit is further configured to: send a third message including the private network identifier, the service identifier, and the network side channel identifier to the another border point device.
  18. 如权利要求15至17任一项所述的光传送设备，其特征在于，所述光传输隧道为光通道数据单元ODU，所述网络侧通道为光业务单元OSU；或者，所述光传输隧道为高阶ODU，所述网络侧通道为低阶ODU。The optical transmission device according to any one of claims 15 to 17, wherein the optical transmission tunnel is an optical channel data unit (ODU), and the network side channel is an optical service unit (OSU); or, the optical transmission tunnel is a high-order ODU, and the network side channel is a low-order ODU.
  19. 如权利要求15至18任一项所述的光传送设备，其特征在于，在OTN的开销中承载所述第一报文、所述第二报文、或者所述第三报文。The optical transmission device according to any one of claims 15 to 18, wherein the OTN overhead carries the first packet, the second packet, or the third packet.
  20. 如权利要求15至19任一项所述的光传送设备，其特征在于，所述第一报文、所述第二报文或者所述第三报文为扩展的路径计算单元协议PCEP报文或者边界网关协议BGP报文。The optical transmission device according to any one of claims 15 to 19, wherein the first message, the second message or the third message is an extended Path Computation Element Protocol (PCEP) message Or Border Gateway Protocol BGP message.
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