WO2017054532A1 - 控制消息发送方法及装置 - Google Patents

控制消息发送方法及装置 Download PDF

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Publication number
WO2017054532A1
WO2017054532A1 PCT/CN2016/086917 CN2016086917W WO2017054532A1 WO 2017054532 A1 WO2017054532 A1 WO 2017054532A1 CN 2016086917 W CN2016086917 W CN 2016086917W WO 2017054532 A1 WO2017054532 A1 WO 2017054532A1
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Prior art keywords
state
control message
physical port
power
control
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PCT/CN2016/086917
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English (en)
French (fr)
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杨学成
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中兴通讯股份有限公司
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Publication of WO2017054532A1 publication Critical patent/WO2017054532A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications

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  • This application relates to, but is not limited to, the field of communication technology.
  • Layer 2 Virtual Private Network is a technology that relies on Internet service providers and network service providers to establish private data communication networks in public networks.
  • L2VPN can be divided into two types: virtual private LAN service (Virtual Private Lan Service, VPLS for short) and virtual private network service (Virtual Leased Line, VLL for short).
  • the former is based on Ethernet service forwarding and supports point-to-multipoint.
  • Network deployment is a virtual private line service, based on Ethernet, Asynchronous Transfer Mode (ATM), Time Division Multiplex (TDM), Advanced Data Link Control (High Level) Layer 2 service simulation such as Data Link Control (HDLC), Frame Relay (FR), and Point-to-Point Protocol (PPP), which only supports point-to-point Point network deployment.
  • ATM Asynchronous Transfer Mode
  • TDM Time Division Multiplex
  • TDM Advanced Data Link Control
  • High Level Layer 2 service simulation
  • HDLC Data Link Control
  • FR Frame Relay
  • PPP Point-to-Point Protocol
  • PW OAM Message Mapping (draft-ietf-pwe3-oam-msg-map-12) is a pseudowire fault notification technology.
  • Access circuit Access Circuit, Jane
  • PW Pseudo Wire
  • the protocol packet advertises the fault to the remote end. The remote end can quickly learn that the service path has failed and perform subsequent processing.
  • LST Link status transfer
  • CE Provider Edge
  • CFM Common Fault Management
  • EMF Equivalent Fault Management
  • the physical interface of the direct connection between the PE and the CE is powered off.
  • the directly connected port of the CE device can detect the fault and complete the fault transmission.
  • FIG 1 is a schematic diagram of the VLL end-to-end network deployment in the related art.
  • the VLL is deployed on the PE1 and is connected to the AC1 and the PW12.
  • the PE2 is deployed on the VLL and is connected to the AC2 and the PW21.
  • the OAM MAPPING function and LST function are deployed on PE1 and PE2 respectively. AC faults can be transmitted to the peer through the PW.
  • the OAM MAPPING function is transmitted to PE2 through the PWE3 protocol.
  • the LST function receives the AC1 fault information from the PWE3 protocol and sends it to the AC2.
  • the physical interface of the AC2 is down.
  • the CE2 device connected to the AC2 can sense the down operation of the interface and perform fault processing on some services.
  • AC1 and AC2 are faulty at the same time. For example, after the PE1 and PE2 are detected, the OAM MAPPING/DOWN is transmitted to each other through PWE3.
  • the PE1 After receiving the OAM MAPPING/DOWN, the PE1 passes the fault to the AC1 through the LST function and sets the physical port of the AC1 down.
  • the PE2 After receiving the OAM MAPPING/DOWN, the PE2 passes the fault to the AC2 through the LST function and sets the physical port of the AC2 down.
  • the AC1 fails to be restored.
  • the LST function caused by the OAM MAPING/DOWN previously transmitted by the remote device is physically down.
  • the fiber insertion operation cannot restore the AC1 state and cannot send OAM MAPPING/UP to PE2.
  • the fiber insertion operation is also performed. Since the LST function caused by the OAM MAPING/DOWN previously transmitted by the remote end is physically down, the fiber insertion operation cannot restore the AC2 state and cannot send OAM MAPPING/ UP to PE1.
  • the present invention provides a control message sending method and apparatus to solve the problem of deadlock of end-to-end fault transmission existing in the related art.
  • a control message sending method includes:
  • the first network side edge device PE receives the first control message sent by the second PE, where the first control message is used to set the state of the physical port of the first access circuit AC connected to the first PE to Predetermined state
  • the first PE sends a second control message to the second PE according to the predetermined state and an actual state of the physical port of the first AC, where the second control message is used to control the second Status of the physical port of the second AC connected to the PE.
  • the second control message is used to control a physical port of the second AC.
  • the status is set to the power-on state.
  • the second control message is used to control a state of the physical port of the second AC to be set to a power-off state.
  • the second control message is used to control a physical port of the second AC.
  • the status is set to the power-on state.
  • the method before the first PE receives the first control message sent by the second PE, the method further includes:
  • the first PE receives the fault message sent by the first AC, where the fault message is used to identify that the first AC is faulty;
  • the first PE sends a third control message to the second PE according to the fault message, where the third control message is used to control a state of the physical port of the second AC to be in a power-off state.
  • a control message sending device the device is applied to a first network side edge device PE, and the control message sending device includes:
  • the first receiving module is configured to: receive a first control message sent by the second PE, where the first control message is used to set a state of a physical port of the first access circuit AC connected to the first PE For a predetermined state;
  • the first sending module is configured to send a second control message to the second PE according to the predetermined state received by the first receiving module and the actual state of the physical port of the first AC, where the The second control message is used to control the state of the physical port of the second AC connected to the second PE.
  • the second control message is used to control a physical port of the second AC.
  • the status is set to the power-on state.
  • the second control message is used to control a physical port of the second AC.
  • the status is set to the power-down state.
  • the second control message is used to control a physical port of the second AC.
  • the status is set to the power-on state.
  • control message sending apparatus further includes:
  • the second receiving module is configured to: before the first receiving module receives the first control message sent by the second PE, receive a fault message sent by the first AC, where the fault message is used Identifying that the first AC fails;
  • the second sending module is configured to send a third control message to the second PE according to the fault message received by the second receiving module, where the third control message is used to control the second AC
  • the state of the physical port is set to the power-off state.
  • the first PE receives the first control message sent by the second PE, and sets the state of the physical port of the first AC connected to the first PE to a predetermined state;
  • the first PE sends a second control message to the second PE according to the predetermined state and the actual state of the physical port of the first AC, thereby controlling the state of the physical port of the second AC connected to the second PE;
  • FIG. 1 is a schematic diagram of a VLL end-to-end network deployment in the related art
  • FIG. 2 is a flowchart of a method for sending a control message according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for sending a control message according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a control message sending apparatus according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of another control message sending apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a topological diagram of an application scenario of an end-to-end networking in a method for sending a control message according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of an apparatus in the end-to-end networking shown in FIG. 6.
  • FIG. 2 is a flowchart of a method for sending a control message according to an embodiment of the present invention. As shown in FIG. 2, the method for sending a control message provided in this embodiment may include the following. Steps, that is, steps 110 to 120:
  • Step 110 The first PE receives a first control message sent by the second PE, where the first control message is used to set a state of a physical port of the first access circuit AC connected to the first PE to a predetermined state.
  • Step 120 The first PE sends a second control message to the second PE according to the foregoing predetermined state and the actual state of the physical port of the first AC, where the second control message is used to control the second AC connected to the second PE.
  • the state of the physical port is used to control the second AC connected to the second PE.
  • the first PE controls the state of the physical port of the first AC according to the first control message, and further according to the foregoing predetermined state and the first
  • the actual state of the physical port of the AC sends a second control message to the second PE, so that the second PE controls the state of the physical port of the second AC according to the second control message, thereby solving the end-to-end fault transmission existing in the related art.
  • the problem of deadlocks in turn, achieves the effect of avoiding deadlock problems with end-to-end fault delivery.
  • the step 120 of the embodiment shown in FIG. 1 is in the actual application scenario, when the predetermined state is a power-off state, and the actual state of the physical port of the first AC is also In the power-off state, the second control message sent by the first PE to the second PE is used to control the state of the physical port of the second AC to be set to the power-on state.
  • the first AC sends a control message to the second PE to control the state of the physical port of the second AC to be set to the power-off state.
  • the first PE receives the first control message sent by the second PE, and the first PE sends the second control message to the second PE.
  • the second control message is used to eliminate the control message sent by the first AC to control the state of the physical port of the second AC to be set to the power-off state, thereby effectively avoiding the end. The problem of deadlocks passed to the end fault.
  • the step 120 of the embodiment shown in FIG. 1 is in the actual application scenario, when the predetermined state is the power-on state, and the actual state of the physical port of the first AC is lower.
  • the second control message sent by the first PE to the second PE is used to control the state of the physical port of the second AC to be set to the power-off state.
  • the step 120 of the embodiment shown in FIG. 1 is in the actual application scenario, when the predetermined state is a power-on state, and the actual state of the physical port of the first AC is also In the power-on state, the second control message sent by the first PE to the second PE is used to control the state of the physical port of the second AC to be set to the power-on state.
  • the method provided in this embodiment may include: before the first PE receives the first control message sent by the second PE, that is, before step 110, the method may further include:
  • Step 100 The first PE receives a fault message sent by the first AC, where the fault message is used to identify that the first AC is faulty.
  • Step 101 The first PE sends a third control message to the second PE according to the fault message, where the third control message is used to control the state of the physical port of the second AC to be in a power-off state.
  • the embodiment of the present invention further provides a control message sending device, which is used to implement the foregoing embodiments and optional implementation manners, and has not been described again.
  • a control message sending device which is used to implement the foregoing embodiments and optional implementation manners, and has not been described again.
  • module can implement a combination of software and/or hardware for a predetermined function.
  • FIG. 4 is a schematic structural diagram of a control message sending apparatus according to an embodiment of the present invention.
  • the control message sending apparatus provided by the embodiment of the present invention can be applied to the first PE.
  • the control message sending apparatus provided by the embodiment includes: a first receiving module 21 and a first sending module 22, The device is described.
  • the first receiving module 21 is configured to: receive a first control message sent by the second PE, where the first control message is used to set a state of a physical port of the first access circuit AC connected to the first PE to a predetermined status;
  • the first sending module 22 is connected to the first receiving module 21, and the first sending module 22 is configured to send to the second PE according to the predetermined state received by the first receiving module 21 and the actual state of the physical port of the first AC. And a second control message, where the second control message is used to control a state of a physical port of the second AC connected to the second PE.
  • the first sending module 22 when the predetermined state is a power-off state, and the actual state of the physical port of the first AC is a power-off state, the first sending module 22 sends the message to the second PE.
  • the second control message is used to control the state of the physical port of the second AC to be set to the power-on state.
  • the first sending module 22 when the predetermined state is a power-on state, and the actual state of the physical port of the first AC is a power-off state, the first sending module 22 sends the message to the second PE.
  • the second control message is used to control the state of the physical port of the second AC to be set to the power-off state.
  • the first sending module 22 when the predetermined state is the power-on state, and the actual state of the physical port of the first AC is the power-on state, the first sending module 22 sends the message to the second PE.
  • the second control message is used to control the state of the physical port of the second AC to be set to the power-on state.
  • FIG. 5 is a schematic structural diagram of another control message sending apparatus according to an embodiment of the present invention. Based on the structure of the apparatus shown in FIG. 4, the control message sending apparatus provided in this embodiment further includes a second receiving module 23 and a second sending module 24. The apparatus will be described below.
  • the second receiving module 23 is configured to receive a fault message sent by the first AC before the first receiving module 21 receives the first control message sent by the second PE, where the fault message is used to identify that the first AC is faulty;
  • a second sending module 24 connected to the second receiving module 23 and the first receiving module 21, the first The second sending module 24 is configured to: send a third control message to the second PE according to the fault message received by the second receiving module 23, where the third control message is used to control the state of the physical port of the second AC to be powered off. .
  • the embodiment of the invention further provides a fault transmission technology of a virtual private network, which solves the deadlock problem of end-to-end fault transmission in the related art by the control of the state machine.
  • FIG. 6 is a schematic diagram of an application scenario of an end-to-end networking in a control message sending method according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of an apparatus in the end-to-end networking shown in FIG.
  • the device includes a PE and a CE, which are described below with respect to the PE1 device of FIG. 6 in conjunction with FIG.
  • a switching system is provided in the embodiment of the present invention, wherein the PE 30 may include: a PWE3 protocol module 31 (same as the first sending module 22 and the second sending module 24 described above), an LST module 32, a first interface module 33, and a fault.
  • the detecting module 34 (same as the second receiving module 23 described above)
  • the CE 40 may include a second interface module 41, where
  • the PWE3 protocol module 31 is configured to: send and receive OAM MAPPING/down, OAM MAPPING/up messages according to the detected status of the physical port of the AC1;
  • the LST module 32 is configured to: pass the LST down/up state to the interface module of the AC1 according to the OAM MAPPING/down and OAM MAPPING/up messages received by the PWE3 protocol module 31;
  • the first interface module 33 is configured to: set the physical port to be down/up according to the LST down/up state, and achieve the effect of fiber breaking/fiber insertion;
  • the fault detection module 34 is configured to detect a link failure of AC1.
  • the second interface module 41 is configured to sense the state of the physical interface of the AC1, so that the CE 40 performs a corresponding operation according to the state of the physical interface of the AC1.
  • control message sending method provided by the embodiment of the present invention is described in detail below with reference to the actual application scenario.
  • the OAM MAPPING down is equivalent to the oam mapping down
  • the OAM MAPPING up is equivalent to the oam mapping up.
  • the application scenario shown in FIG. 6 is taken as an example for description.
  • the application scenario of the networking is introduced first, and the implementation steps of the present invention are described in detail.
  • the embodiment of the invention includes the following steps, namely steps A to J:
  • Step A the VLL end-to-end network is deployed.
  • Step A may include the following steps, that is, steps A1 to A2:
  • A1, PE1 establishes a VLL service, and configures AC1 and PW12.
  • A2, PE2 establishes a VLL service, and configures AC2 and PW21;
  • step A the VLL end-to-end network deployment is completed.
  • the PW status established between PE1 and PE2 is normal and the traffic can be normal.
  • Step B PE1 and PE2 respectively enable the OAM MAPPING and LST functions;
  • Step B may include the following steps, that is, steps B1 to B2:
  • the AC1 link can be transmitted to the PE2 through the OAM MAPPING function.
  • the OAM MAPPING function can be transmitted to the PE1.
  • PE1 and PE2 can set the physical interfaces of AC1 and AC2 to the power-off state.
  • step C when the AC1 link is faulty, the fault detection module 34 detects the AC1 fault, and sends a message to the peer PE2 using the OAM MAPPING down packet.
  • step D when the AC2 link fails, the fault detection module 34 detects the AC2 fault, and sends a message to the peer PE1 using the OAM MAPPING down message.
  • Step E After receiving the OAM MAPPING down message, the PWE3 protocol module 31 of the PE1 notifies the LST module 32.
  • the PE1 performs the difference processing according to the interface state + LST state, as shown in Table 1:
  • step F after receiving the OAM MAPPING up, the PE2 notifies the "LST module 32", and the difference processing is performed according to the "interface state + LST state", as shown in Table 2:
  • PE1 sends OAM MAPPING up to PE2, and PE2 sends OAM MAPPING down to PE1.
  • Step G AC2 failure recovery, "Failure Detection Module 34" detects the AC2 failure recovery, the notification is sent to the "PWE3 protocol module 31", and the OAM MAPPING up message is sent to the peer PE1;
  • step H after receiving the OAM MAPPING up message, the PWE3 protocol module 31 of the PE1 notifies the LST module 32, and the difference is processed according to the interface state + LST state, as shown in Table 3:
  • AC1 is in the fault state, and AC2 is in the normal state.
  • PE1 sends OAM MAPPING down to PE2, and PE2 sends OAM MAPPING up to PE1.
  • Step I AC1 failure recovery, "Failure Detection Module 34" detects AC1 failure recovery, notifys "PWE3 Protocol Module 31", and sends an OAM MAPPING up message to the peer PE2;
  • Step J After receiving the OAM MAPPING up message, the PWE3 protocol module 31 of the PE2 notifies the LST module, and then performs the difference processing according to the interface state + LST state, as shown in Table 4. Shown as follows:
  • the state control method provided by the embodiment of the present invention separates the local state and the remote state by the state mechanism control during the fault transmission process, and solves the problem of the fault transmission deadlock of the networking in the related art.
  • each of the foregoing modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules may be located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • the first PE sends a second control message to the second PE according to the foregoing predetermined state and the actual state of the physical port of the first AC, where the second control message is used to control the physicality of the second AC connected to the second PE.
  • the state of the mouth is used to control the physicality of the second AC connected to the second PE.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (R: A variety of media that can store program code, such as AM), removable hard drives, disks, or optical disks.
  • a USB flash drive a Read-Only Memory (ROM), and a Random Access Memory (R: A variety of media that can store program code, such as AM), removable hard drives, disks, or optical disks.
  • AM Read-Only Memory
  • R Random Access Memory
  • the processor performs the above steps S1-S2 according to the stored program code in the storage medium.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the first PE receives the first control message sent by the second PE, so that the state of the physical port of the first AC connected to the first PE is set to a predetermined state; the first PE is according to the predetermined state and the first The actual state of the physical port of the AC sends a second control message to the second PE, thereby controlling the state of the physical port of the second AC connected to the second PE.
  • the embodiment of the present invention solves the end-to-end fault transmission existing in the related art. The problem of deadlocks, in turn, achieves the effect of avoiding deadlock problems with end-to-end fault delivery.

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Abstract

一种控制消息发送方法及装置，其中，该方法包括：第一PE接收第二PE发送的第一控制消息，其中，该第一控制消息用于将与第一PE相连的第一接入电路AC的物理口的状态设置为预定状态；第一PE根据上述预定状态和第一AC的物理口的实际状态向第二PE发送第二控制消息，其中，该第二控制消息用于控制与第二PE相连的第二AC的物理口的状态。

Description

控制消息发送方法及装置 技术领域
本申请涉及但不限于通信技术领域。
背景技术
为了满足城域网业务转型和三网融合的趋势，网络运营商倾向于采用高效和低成本的分组传送网络来实现多业务承载，提供灵活的网络服务，提高网络资源利用率，降低网络部署复杂度，增强网络服务灵活性，为其带来更多的经济效益。
二层虚拟专用网(Layer 2 Virtual Private Network，简称为：L2VPN)是依靠互联网(Internet)服务提供商和网络服务提供商在公共网络中建立专用数据通信网络的技术。L2VPN可分为虚拟专用局域网业务(Virtual Private Lan Service，简称为：VPLS)和虚拟专用网业务(Virtual Leased Line，简称为：VLL)两种业务模型，前者基于以太业务转发，支持点到多点的网络部署；后者是虚拟专线业务，基于以太、异步传输模式(Asynchronous Transfer Mode，简称为：ATM)、时分复用(Time Division Multiplex，简称为：TDM)、高级数据链路控制(High Level Data Link Control，简称为：HDLC)、帧中继(Frame Relay，简称为：FR)、点到点协议(Point-to-Point Protocol，简称为：PPP)等二层业务仿真，仅支持点到点的网络部署。
由于电信级以太网的高可靠性需求，运营商对网络出现故障时的业务收敛速度非常重视，这就需要在网络部署时更注重故障响应及保护倒换能力，互联网工程任务组(Internet Engineering Task Force，简称为：IETF)组织边缘到边缘的伪线仿真(Pseudo-Wire Emulation Edge to Edge，简称为：PWE3)工作组提出的伪线运行、管理和维护消息映射(PW OAM Message Mapping)和伪线备份(PW redundancy)技术正是为此考虑的。
PW OAM Message Mapping(draft-ietf-pwe3-oam-msg-map-12)是一种伪线故障通告技术。在点到点仿真业务时，支持接入电路(Access Circuit，简 称为：AC)与伪线(Pseudo Wire，简称为：PW)的故障映射，即AC发生故障时，实现与PW层运行、管理和维护(Operation Administration&Maintenance，简称为：OAM)的联动，通过PWE3协议报文将故障通告到远端，远端能够快速获知此业务路径已出现故障，进行相应的后续处理。
链路状态传输(link status transfer，简称为：LST)是一种故障检测技术，当VLL端到端组网时，网络侧边缘设备(Provider Edge，简称为：PE)-客户侧边缘设备(Customer Edge，简称为：CE)之间不支持连通错误管理(Commectivity Fault Management，简称为：CFM)/最后一公里(Ethernet in the First Mile，简称为：EFM)等故障检测机制时，可以使用LST功能来将PE-CE之间的直连物理口置下电(down)，CE设备直连端口能够感知到此故障，完成故障传递。
图1是相关技术中的VLL端到端网络部署示意图，如图1所示，PE1部署VLL，接入AC1和PW12；PE2部署VLL，接入AC2和PW21，形成VLL端到端组网。PE1和PE2分别部署OAM MAPPING功能和LST功能。AC故障均能通过PW传递给对端。
OAM MAPPING功能在PE1上检测到AC1发生故障后，通过PWE3协议传递给PE2；
LST功能在PE2上收到了PWE3协议传递来的“AC1故障信息”传递给AC2，将AC2的物理接口置down，与AC2直连的CE2设备能够感应到接口down操作，做一些业务的故障处理。
图1中的对称组网场景，存在一个问题：
PE1和PE2对称组网，均开启OAM MAPPING和LST。
AC1和AC2同时发生故障，例如发生拔纤操作，PE1和PE2分别检测到后，通过PWE3相互传递OAM MAPPING/DOWN给对方；
PE1收到OAM MAPPING/DOWN后，通过LST功能将故障传递给AC1，将AC1物理口置down；
同时，PE2收到OAM MAPPING/DOWN后，通过LST功能将故障传递给AC2，将AC2物理口置down；
AC1故障恢复，例如执行插纤操作，由于AC1之前被远端传递来的OAM MAPING/DOWN引起的LST功能置过物理down，插纤操作不能使AC1状态恢复，无法发送OAM MAPPING/UP给PE2。
类似地，AC2故障恢复，例如同样执行插纤操作，由于AC2之前被远端传递来的OAM MAPING/DOWN引起的LST功能置过物理down，插纤操作不能使AC2状态恢复，无法发送OAM MAPPING/UP给PE1。
在上述应用场景中，存在组网发生故障后两端接口都无法上电(up)的情况，两端状态死锁。因此，相关技术中会存在端到端故障传递的死锁的问题。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
针对相关技术中存在的端到端故障传递的死锁的问题，相关技术中尚未提出有效的解决方案。
本文提供了一种控制消息发送方法及装置，以解决相关技术中存在的端到端故障传递的死锁的问题。
一种控制消息发送方法，包括：
第一网络侧边缘设备PE接收第二PE发送的第一控制消息，其中，所述第一控制消息用于将与所述第一PE相连的第一接入电路AC的物理口的状态设置为预定状态；
所述第一PE根据所述预定状态和所述第一AC的物理口的实际状态向所述第二PE发送第二控制消息，其中，所述第二控制消息用于控制与所述第二PE相连的第二AC的物理口的状态。
可选地，当所述预定状态为下电状态，且所述第一AC的物理口的实际状态为下电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为上电状态。
可选地，当所述预定状态为上电状态，且所述第一AC的物理口的实际状 态为下电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为下电状态。
可选地，当所述预定状态为上电状态，且所述第一AC的物理口的实际状态为上电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为上电状态。
可选地，所述第一PE接收所述第二PE发送的所述第一控制消息之前，所述方法还包括：
所述第一PE接收所述第一AC发送的故障消息，其中，所述故障消息用于标识所述第一AC发生故障；
所述第一PE根据所述故障消息向所述第二PE发送第三控制消息，其中，所述第三控制消息用于控制所述第二AC的物理口的状态置为下电状态。
一种控制消息发送装置，所述装置应用于第一网络侧边缘设备PE中，所述控制消息发送装置包括：
第一接收模块，设置为：接收第二PE发送的第一控制消息，其中，所述第一控制消息用于将与所述第一PE相连的第一接入电路AC的物理口的状态设置为预定状态；
第一发送模块，设置为：根据所述第一接收模块接收的所述预定状态和所述第一AC的物理口的实际状态向所述第二PE发送第二控制消息，其中，所述第二控制消息用于控制与所述第二PE相连的第二AC的物理口的状态。
可选地，当所述预定状态为下电状态，且所述第一AC的物理口的实际状态为下电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为上电状态。
可选地，当所述预定状态为上电状态，且所述第一AC的物理口的实际状态为下电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为下电状态。
可选地，当所述预定状态为上电状态，且所述第一AC的物理口的实际状态为上电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为上电状态。
可选地，所述控制消息发送装置还包括：
第二接收模块，设置为：在所述第一接收模块接收所述第二PE发送的所述第一控制消息之前，接收所述第一AC发送的故障消息，其中，所述故障消息用于标识所述第一AC发生故障；
第二发送模块，设置为：根据所述第二接收模块接收的所述故障消息向所述第二PE发送第三控制消息，其中，所述第三控制消息用于控制所述第二AC的物理口的状态置为下电状态。
本发明实施例提供的控制消息发送方法及装置，通过第一PE接收第二PE发送的第一控制消息，从而将与该第一PE相连的第一AC的物理口的状态置为预定状态；第一PE根据预定状态和第一AC的物理口的实际状态向第二PE发送第二控制消息，从而控制与第二PE相连的第二AC的物理口的状态；本发明实施例解决了相关技术中存在的端到端故障传递的死锁的问题，进而达到了避免端到端故障传递的死锁的问题的效果。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为相关技术中的VLL端到端网络部署示意图；
图2为本发明实施例提供的一种控制消息发送方法的流程图；
图3为本发明实施例提供的另一种控制消息发送方法的流程图；
图4为本发明实施例提供的一种控制消息发送装置的结构示意图；
图5为本发明实施例提供的另一种控制消息发送装置的结构示意图；
图6为本发明实施例提供的控制消息发送方法中一种端到端组网的应用场景拓扑图；
图7为图6所示端到端组网中的设备结构示意图。
本发明的实施方式
下文中将结合附图对本发明的实施方式进行详细说明。需要说明的是， 在不冲突的情况下，本文中的实施例及实施例中的特征可以相互任意组合。
在附图的流程图示出的步骤可以在诸根据一组计算机可执行指令的计算机系统中执行。并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
本发明实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本发明实施例提供了一种控制消息发送方法，图2为本发明实施例提供的一种控制消息发送方法的流程图，如图2所示，本实施例提供的控制消息发送方法可以包括如下步骤，即步骤110～步骤120：
步骤110，第一PE接收第二PE发送的第一控制消息，其中，该第一控制消息用于将与第一PE相连的第一接入电路AC的物理口的状态设置为预定状态；
步骤120，第一PE根据上述预定状态和第一AC的物理口的实际状态向第二PE发送第二控制消息，其中，该第二控制消息用于控制与第二PE相连的第二AC的物理口的状态。
本实施例通过上述方法，第一PE在接收到第二PE发送的第一控制消息后，会根据该第一控制消息控制第一AC的物理口的状态，还会根据上述预定状态和第一AC的物理口的实际状态来向第二PE发送第二控制消息，使得第二PE根据第二控制消息控制第二AC的物理口的状态，从而解决了相关技术中存在的端到端故障传递的死锁的问题，进而达到了避免端到端故障传递的死锁的问题的效果。
可选地，在本发明的一个实施例中，如图1所示实施例的步骤120在实际应用场景中，当上述预定状态为下电状态，且第一AC的物理口的实际状态同样为下电状态时，第一PE向第二PE发送的第二控制消息用于控制第二AC的物理口的状态设置为上电状态。在实际应用中，当第一AC的物理口的实际状态为下电状态时，该第一AC会向第二PE发送用于控制第二AC的物理口的状态设置为下电状态的控制消息，当第二AC故障后，第一PE会接收到第二PE发送的上述第一控制消息，此时，第一PE向第二PE发送上述第二控制消息可以消 除之前发送的故障处理信息，也就是说，该第二控制消息的作用消除上述第一AC发送的用于控制第二AC的物理口的状态设置为下电状态的控制消息，从而有效避免端到端故障传递的死锁的问题。
可选地，在本发明的一个实施例中，如图1所示实施例的步骤120在实际应用场景中，当上述预定状态为上电状态，且第一AC的物理口的实际状态为下电状态时，第一PE向第二PE发送的第二控制消息用于控制第二AC的物理口的状态设置为下电状态。
可选地，在本发明的一个实施例中，如图1所示实施例的步骤120在实际应用场景中，当上述预定状态为上电状态，且第一AC的物理口的实际状态同样为上电状态时，第一PE向第二PE发送的第二控制消息用于控制第二AC的物理口的状态设置为上电状态。
可选地，如图3所示，为本发明实施例提供的另一种控制消息发送方法的流程图。在图1所示实施例的基础上，本实施例提供的方法在第一PE接收第二PE发送的第一控制消息，即步骤110之前，还可以包括：
步骤100，第一PE接收第一AC发送的故障消息，其中，该故障消息用于标识该第一AC发生故障；
步骤101，第一PE根据故障消息向第二PE发送第三控制消息，其中，该第三控制消息用于控制第二AC的物理口的状态置为下电状态。
通过本发明上述实施例和实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件实现，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
本发明实施例中还提供了一种控制消息发送装置，该装置用于实现上述实施例及可选地实施方式，已经进行过说明的不再赘述。如以下所使用的， 术语“模块”可以实现预定功能的软件和/或硬件的组合。
图4为本发明实施例提供的一种控制消息发送装置的结构示意图。本发明实施例提供的控制消息发送装置可以应用于第一PE中，如图4所示，实施例提供的控制消息发送装置包括：第一接收模块21和第一发送模块22，下面对该装置进行说明。
第一接收模块21，设置为：接收第二PE发送的第一控制消息，其中，该第一控制消息用于将与第一PE相连的第一接入电路AC的物理口的状态设置为预定状态；
第一发送模块22，连接至上述第一接收模块21，该第一发送模块22设置为：根据第一接收模块21接收的上述预定状态和第一AC的物理口的实际状态向第二PE发送第二控制消息，其中，该第二控制消息用于控制与第二PE相连的第二AC的物理口的状态。
可选地，在本发明的一个实施例中，当上述预定状态为下电状态，且第一AC的物理口的实际状态为下电状态时，上述第一发送模块22向第二PE发送的第二控制消息用于控制第二AC的物理口的状态设置为上电状态。
可选地，在本发明的一个实施例中，当上述预定状态为上电状态，且第一AC的物理口的实际状态为下电状态时，上述第一发送模块22向第二PE发送的第二控制消息用于控制第二AC的物理口的状态设置为下电状态。
可选地，在本发明的一个实施例中，当上述预定状态为上电状态，且第一AC的物理口的实际状态为上电状态时，上述第一发送模块22向第二PE发送的第二控制消息用于控制第二AC的物理口的状态设置为上电状态。
图5为本发明实施例提供的另一种控制消息发送装置的结构示意图。在上述图4所示装置的结构基础上，本实施例提供的控制消息发送装置还包括第二接收模块23和第二发送模块24，下面对该装置进行说明。
第二接收模块23，设置为在第一接收模块21接收第二PE发送的第一控制消息之前，接收第一AC发送的故障消息，其中，该故障消息用于标识第一AC发生故障；
第二发送模块24，连接至上述第二接收模块23和第一接收模块21，该第 二发送模块24设置为：根据第二接收模块23接收的故障消息向第二PE发送第三控制消息，其中，该第三控制消息用于控制第二AC的物理口的状态置为下电状态。
下面结合实际应用场景对本发明实施例进行说明：
本发明实施例还提供一种虚拟专用网的故障传递技术，通过状态机的控制来解决相关技术中端到端故障传递的死锁问题。
图6为本发明实施例提供的控制消息发送方法中一种端到端组网的应用场景拓扑图，图7为图6所示端到端组网中的设备结构示意图，图7中交互的设备包括PE和CE，下面针对图6中的PE1设备结合图7进行描述。本发明实施例中提供了一种切换系统，其中，PE30可以包括：PWE3协议模块31(同上述的第一发送模块22和第二发送模块24)、LST模块32、第一接口模块33和故障检测模块34(同上述的第二接收模块23)，CE40可以包括第二接口模块41，其中，
PWE3协议模块31，设置为：根据检测到的AC1的物理口的状态，发送和接收OAM MAPPING/down、OAM MAPPING/up报文；
LST模块32，设置为：根据PWE3协议模块31接收到的OAM MAPPING/down、OAM MAPPING/up报文，传递LST down/up状态给AC1的接口模块；
第一接口模块33，设置为：根据LST down/up状态来操作物理口设置为down/up，达到断纤/插纤的效果；
故障检测模块34，设置为：检测AC1的链路故障。
第二接口模块41，设置为：感应AC1的物理接口的状态，以使得CE40根据AC1的物理接口的状态执行相应的操作。
下面结合实际应用场景对本发明实施例提供的控制消息发送方法进行详细说明，在下述实施例中，OAM MAPPING down与oam mapping down相当，OAM MAPPING up与oam mapping up相当。
以图6所示应用场景为例予以说明，先介绍下组网应用场景，再详细说明本发明的实施步骤。
本发明实施例包括以下步骤，即步骤A～步骤J：
步骤A，进行VLL端到端网络的部署，步骤A可以包括如下步骤，即步骤A1～步骤A2：
A1，PE1建立VLL业务，配置AC1和PW12；
A2，PE2建立VLL业务，配置AC2和PW21；
步骤A完成后，VLL端到端网络部署完成。PE1和PE2间建立的PW状态正常，流量能够正常。
步骤B，PE1和PE2分别开启OAM MAPPING和LST功能；步骤B可以包括如下步骤，即步骤B1～步骤B2：
B1，PE1上PW12开启OAM MAPPING功能，AC1上开启LST功能；
B2，PE2上PW21开启OAM MAPPING功能，AC2上开启LST功能；
步骤B完成后，AC1链路发生故障后，能通过OAM MAPPING功能传递给PE2；AC2发生故障后，能通过OAM MAPPING功能传递到PE1。PE1和PE2分别接收到OAM MAPPING down报文后，可以将AC1和AC2的物理接口设置为下电状态。
步骤C，AC1链路发生故障时，“故障检测模块34”检测到AC1故障，通知给“PWE3协议模块31”，使用OAM MAPPING down报文发送给对端PE2；
步骤D，AC2链路发生故障时，“故障检测模块34”检测到AC2故障，通知给“PWE3协议模块31”，使用OAM MAPPING down报文发送给对端PE1；
此时，PE1和PE2关联的AC1和AC2都发生故障。两端相互发送OAM MAPPING down报文给对端。
步骤E，PE1的“PWE3协议模块31”收到OAM MAPPING down报文后，通知给“LST模块32”，此时PE1根据“接口状态+LST状态”来做区别处理，如表1所示：
表1
接口状态 DOWN
LST状态 DOWN
处理逻辑 发送OAM MAPPING up给对端
此时，接口状态和LST状态均为DOWN，向PE2发送oam mapping up，清除之前发送的故障。
步骤F，PE2收到OAM MAPPING up后，通知给“LST模块32”，此时根据“接口状态+LST状态”来做区别处理，如表2所示：
表2
接口状态 DOWN
LST状态 UP
处理逻辑 发送oam mapping down给对端
此时，PE1和PE2关联的AC1和AC2都发生故障。PE1发送OAM MAPPING up给PE2，PE2发送OAM MAPPING down给PE1。
步骤G，AC2故障恢复，“故障检测模块34”检测到AC2故障恢复，通知给“PWE3协议模块31”，使用OAM MAPPING up报文发送给对端PE1；
步骤H，PE1的“PWE3协议模块31”收到OAM MAPPING up报文后，通知给“LST模块32”，此时根据“接口状态+LST状态”来做区别处理，如表3所示：
表3
接口状态 DOWN
LST状态 UP
处理逻辑 发送oam mapping down给对端
此时，AC1是故障状态，AC2是正常状态，PE1发送OAM MAPPING down给PE2，PE2发送OAM MAPPING up给PE1。
步骤I，AC1故障恢复，“故障检测模块34”检测到AC1故障恢复，通知给“PWE3协议模块31”，使用OAM MAPPING up报文发送给对端PE2；
步骤J，PE2的“PWE3协议模块31”收到OAM MAPPING up报文后，通知给“LST模块”，此时根据“接口状态+LST状态”来做区别处理，如表4 所示：
表4
接口状态 UP
LST状态 UP
处理逻辑 发送oam mapping up给对端
此时，AC1是正常状态，AC2是正常状态，PE1发送OAM MAPPING up给PE2，PE2发送OAM MAPPING up给PE1，两端不会出现死锁现象。
与相关技术相比较，VLL端到端对称组网时，两端故障相互传递时，会存在状态死锁的问题。本发明实施例提出的状态控制方法，在故障传递过程中通过状态机制的控制，将本端状态和远端状态分离，解决了相关技术中组网的故障传递死锁问题。
在实际应用中，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块可以位于同一处理器中；或者，上述模块分别位于多个处理器中。
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，第一接收第二PE发送的第一控制消息，其中，该第一控制消息用于将与第一PE相连的第一接入电路AC的物理口的状态设置为预定状态；
S2，第一PE根据上述预定状态和第一AC的物理口的实际状态向第二PE发送第二控制消息，其中，该第二控制消息用于控制与第二PE相连的第二AC的物理口的状态。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为：ROM)、随机存取存储器(Random Access Memory，简称为R：AM)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行上述的步骤S1-S2。
可选地，本实施例中的示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(根据系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
本发明实施例通过第一PE接收第二PE发送的第一控制消息，从而将与该第一PE相连的第一AC的物理口的状态置为预定状态；第一PE根据预定状态和第一AC的物理口的实际状态向第二PE发送第二控制消息，从而控制与第二PE相连的第二AC的物理口的状态；本发明实施例解决了相关技术中存在的端到端故障传递的死锁的问题，进而达到了避免端到端故障传递的死锁的问题的效果。

Claims (10)

  1. 一种控制消息发送方法，包括：
    第一网络侧边缘设备PE接收第二PE发送的第一控制消息，其中，所述第一控制消息用于将与所述第一PE相连的第一接入电路AC的物理口的状态设置为预定状态；
    所述第一PE根据所述预定状态和所述第一AC的物理口的实际状态向所述第二PE发送第二控制消息，其中，所述第二控制消息用于控制与所述第二PE相连的第二AC的物理口的状态。
  2. 根据权利要求1所述的方法，其中，当所述预定状态为下电状态，且所述第一AC的物理口的实际状态为下电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为上电状态。
  3. 根据权利要求1所述的方法，其中，当所述预定状态为上电状态，且所述第一AC的物理口的实际状态为下电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为下电状态。
  4. 根据权利要求1所述的方法，其中，当所述预定状态为上电状态，且所述第一AC的物理口的实际状态为上电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为上电状态。
  5. 根据权利要求1至4中任一项所述的方法，其中，所述第一PE接收所述第二PE发送的所述第一控制消息之前，所述方法还包括：
    所述第一PE接收所述第一AC发送的故障消息，其中，所述故障消息用于标识所述第一AC发生故障；
    所述第一PE根据所述故障消息向所述第二PE发送第三控制消息，其中，所述第三控制消息用于控制所述第二AC的物理口的状态置为下电状态。
  6. 一种控制消息发送装置，应用于第一网络侧边缘设备PE中，所述控制消息发送装置包括：
    第一接收模块，设置为：接收第二PE发送的第一控制消息，其中，所述第一控制消息用于将与所述第一PE相连的第一接入电路AC的物理口的状态设置为预定状态；
    第一发送模块，设置为：根据所述第一接收模块接收的所述预定状态和所述第一AC的物理口的实际状态向所述第二PE发送第二控制消息，其中，所述第二控制消息用于控制与所述第二PE相连的第二AC的物理口的状态。
  7. 根据权利要求6所述的装置，其中，当所述预定状态为下电状态，且所述第一AC的物理口的实际状态为下电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为上电状态。
  8. 根据权利要求6所述的装置，其中，当所述预定状态为上电状态，且所述第一AC的物理口的实际状态为下电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为下电状态。
  9. 根据权利要求6所述的装置，其中，当所述预定状态为上电状态，且所述第一AC的物理口的实际状态为上电状态时，所述第二控制消息用于控制所述第二AC的物理口的状态设置为上电状态。
  10. 根据权利要求6至9中任一项所述的装置，还包括：
    第二接收模块，设置为：在所述第一接收模块接收所述第二PE发送的所述第一控制消息之前，接收所述第一AC发送的故障消息，其中，所述故障消息用于标识所述第一AC发生故障；
    第二发送模块，设置为：根据所述第二接收模块接收的所述故障消息向所述第二PE发送第三控制消息，其中，所述第三控制消息用于控制所述第二AC的物理口的状态置为下电状态。
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