WO2008040197A1 - Procédé de traitement et dispositif pour le fonctionnement, l'administration et le maintien - Google Patents

Procédé de traitement et dispositif pour le fonctionnement, l'administration et le maintien Download PDF

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Publication number
WO2008040197A1
WO2008040197A1 PCT/CN2007/070603 CN2007070603W WO2008040197A1 WO 2008040197 A1 WO2008040197 A1 WO 2008040197A1 CN 2007070603 W CN2007070603 W CN 2007070603W WO 2008040197 A1 WO2008040197 A1 WO 2008040197A1
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WIPO (PCT)
Prior art keywords
edge device
maintenance
circuit
defect
defect state
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PCT/CN2007/070603
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English (en)
French (fr)
Inventor
Huachen Zhang
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008040197A1 publication Critical patent/WO2008040197A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/40Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities

Definitions

  • the present invention relates to the field of communications, and more particularly to a processing method and apparatus for operation, management, and maintenance, which are particularly applicable to an Ethernet virtual private line service.
  • CE custom edge, client edge device
  • PE provide
  • the edge device is not necessarily connected directly.
  • the local network N may exist.
  • CE1 is connected to PE1 through network N1
  • CE2 is connected to PE2 through network N2.
  • PE1 and PE2 are connected.
  • PW pseudowire
  • N1 and N2 refer to the Ethernet network, and the direction of the arrow in the figure indicates the direction of reception or transmission.
  • the defect type of the PE is defined in the technical solution of the related art, wherein the forwarding defect refers to a failure that affects receiving information, and the reverse defect refers to a failure that affects sending information.
  • the forwarding defect refers to a failure that affects receiving information
  • the reverse defect refers to a failure that affects sending information.
  • AC forwarding A defect is a fault that affects the PE receiving the AC direction information of the local end.
  • the AC reverse fault is a fault that affects the direction in which the PE transmits information to the local AC.
  • the PW forwarding defect refers to a fault that affects the PE receiving PW direction information
  • the PW reverse defect refers to a fault that affects the PE transmitting information to the PW direction.
  • PE1 advertises the defects of the local PW and AC1 to PE2 and CE2.
  • PE2 advertises the faults of the local PW and AC2 to PE1 and CE1, so that both CE and PE can detect the fault at the remote end.
  • the OAM mechanism is implemented as follows:
  • the Ethernet fault detection capability of the Ethernet type is very limited, and only the link fault can be detected.
  • the faults caused by other causes cannot be discovered.
  • the fault of N1 cannot be discovered by the CE and the PE.
  • the fault of N1 cannot be advertised to PE2 and CE2.
  • the fault of CE1 cannot be advertised.
  • PE PE2 and CE2 which cause the PE to fail to enter or leave the specific defect state.
  • the present invention has been made in an effort to overcome the deficiencies in the related art described above. To this end, the present invention provides a processing method and apparatus for operation, management, and maintenance.
  • the embodiment of the present invention provides a processing method for operation, management, and maintenance, which is used for an Ethernet virtual private line service, on an Ethernet interface of an operator edge device connected to an auxiliary circuit, and connected to the auxiliary circuit.
  • An outbound maintenance endpoint is configured on the Ethernet interface of the client edge device, where the maintenance endpoint performs continuity detection processing, and the carrier edge device enters or leaves the specific defect according to the detection result of the maintenance endpoint. status.
  • the embodiment of the present invention provides a processing device for operation, management, and maintenance, which is used for an Ethernet virtual private line service, including:
  • the maintenance end endpoint configuration part is configured to configure an outbound maintenance end endpoint on the Ethernet port of the carrier edge device connected to the accessory circuit and the Ethernet port of the client edge device connected to the accessory circuit, for executing Continuity detection processing to determine whether an operator's edge device enters or leaves a specific defect state
  • the embodiment of the present invention is connected to an auxiliary circuit on an operator edge device.
  • the Ethernet port and the Ethernet port connected to the accessory circuit on the client edge device are configured with the outbound maintenance endpoint.
  • the carrier edge device performs the detection process of the continuity detection process according to the endpoints of the maintenance terminal, and the edge device or client edge of the carrier. When the device advertises the fault, the process of entering/leaving the forwarding defect state or the reverse defect state can be smoothly performed.
  • FIG. 1 is a schematic diagram showing a prior art VPWS service model
  • FIG. 2 is a schematic view showing a defect of a prior art PE
  • FIG. 3 is a block diagram showing the structure of a processing device for operation, management, and maintenance according to an embodiment of the present invention
  • FIG. 4 is a PE (operator edge device) entering a PW (pseudowire) forwarding defect state. Processing flow; and [27] Figure 5 is the processing flow for the PE to enter the AC (auxiliary circuit) forwarding defect status.
  • Ethernet is introduced for the Ethernet type AC (auxiliary circuit) service.
  • the OAM (Operation, Management, and Maintenance) mechanism fully detects and delivers AC failures.
  • the present invention provides a processing method for operation, management, and maintenance.
  • VPWS Ethernet Virtual Private Line Service
  • AC attached circuit
  • PE carrier edge device
  • CE client edge device
  • MEP outgoing maintenance end point
  • the maintenance end endpoint performs continuity detection (CC detection) processing, and the operator edge device enters or leaves the specific defect state according to the detection result of the maintenance end endpoint.
  • CC detection continuity detection
  • the specific defect states include an auxiliary circuit (AC) forwarding defect state, an AC reverse defect state, a pseudowire (PW) forwarding defect state, and a PW reverse defect state.
  • AC auxiliary circuit
  • PW pseudowire
  • the first maintenance end endpoint is configured between the Ethernet interface of the carrier edge device and the accessory circuit
  • the second maintenance end endpoint is configured on the Ethernet interface connected to the accessory circuit by the client edge device
  • the first dimension is The level of the protection end point and the second maintenance end end point is set to LI, wherein the first maintenance end end point and the second maintenance end end point perform continuity detection processing to mutually detect whether the opposite end is on or off.
  • the carrier edge device When the operator edge device enters the accessory circuit to forward the defect state, the carrier edge device sends a notification to the peer carrier edge device that the carrier edge device enters the accessory circuit to forward the defect state due to the accessory circuit failure, in response to the notification, The peer carrier edge device sends an Ethe met to the local accessory circuit.
  • the AIS packet, and the corresponding level of the alarm to be predicted is set to the level of the customer MEG, that is, set to L2, where the L2 level is higher than the L1 level.
  • the carrier edge device sends a notification to the peer carrier edge device that the accessory circuit is forwarded due to the failure of the accessory circuit failure, and the peer operation is responded to the notification.
  • the edge device stops sending Ethernet to the local attached circuit.
  • the operator edge device leaves the secondary circuit in the reverse defect state and enters the auxiliary circuit to forward the defect state.
  • the carrier edge device sends the Ethernet to the local accessory circuit.
  • AIS message and the corresponding level of the alarm to be predicted is set to the level of the customer MEG, that is, set to L2.
  • the carrier edge device After the carrier edge device leaves the pseudowire forwarding defect state, the carrier edge device stops sending Ethernet AIS packets to the local accessory circuit.
  • the operation of the processing method of the present invention will be described in detail below with reference to FIGS. 1, 3, and 4 in conjunction with examples.
  • Level is set to Ll. Configure an outgoing MEP on the Ethernet interface of the CE (client edge device) connected to the AC.
  • Level is set to Ll.
  • the corresponding two MEPs start the CC detection function, and mutually detect whether the opposite end is on or off.
  • another Ethernet MEP is configured on the Ethernet port connected to the AC on the CE, and its MEG
  • the level is set to L2, and the level of L2 is higher than L1.
  • the CE is connected to the Ethernet port of the peer and the AC is configured with an outgoing MEP.
  • Level is set to L2.
  • the corresponding MEPs of the two levels L2 initiate the CC detection function, and mutually detect whether the opposite end is on or off.
  • the information of L2 is recorded through user configuration.
  • the PE leaves the AC forwarding defect state.
  • the MEP After the Level is set to L1, the MEP receives the CC message whose RDI flag has been set, and the PE enters the AC reverse defect state.
  • the PE leaves the AC reverse defect and enters the normal state.
  • Y.1731 set the corresponding level of the alarm to be predicted to the level of the customer MEG, that is, L2, so that the corresponding customer can know the message, the purpose is to achieve alarm suppression.
  • PE1 takes PE1 as an example to describe its execution procedure to leave the PW forwarding defect state.
  • PE1 is taken as an example to describe its execution procedure for entering the AC forwarding defect state.
  • PE1 advertises to PE2 that PE1 enters the PW forwarding defect state due to AC failure. After receiving the advertisement, PE2 sends an Ethernet packet to the local AC (CE2).
  • the level of the corresponding alarm In the AIS packet, set the level of the corresponding alarm to be set to the level of the customer MEG, that is, set to L2.
  • PE1 advertises to PE2 that PE1 leaves the PW forwarding defect state due to AC failure recovery. After receiving the advertisement, PE2 stops sending Ethernet AIS packets to the local AC (CE2).
  • the present invention also provides a processing apparatus for operation, management, and maintenance, wherein the structure of the processing apparatus for operation, management, and maintenance according to the present invention is shown in FIG.
  • a processing device suitable for operation, management, and maintenance of an Ethernet virtual private line service includes: a maintenance end endpoint configuration unit 302 for use on an operator edge device and an auxiliary circuit
  • the Ethernet port connected to the auxiliary circuit on the connected Ethernet port and the client edge device is configured with an outgoing maintenance endpoint.
  • the maintenance endpoint performs continuity detection processing, and the operator edge device enters according to the detection result of the maintenance endpoint. Or leave a specific defect state.
  • the specific defect states include an auxiliary circuit (AC) forwarding defect state, an AC reverse defect state, a pseudowire (PW) forwarding defect state, and a PW reverse defect state.
  • AC auxiliary circuit
  • PW pseudowire
  • the maintenance end endpoint configuration part configures the first maintenance end point between the operator edge device and the Ethernet port connected to the accessory circuit, and configures the second maintenance end end point on the Ethernet port connected to the accessory circuit by the client edge device, And setting the levels of the first maintenance end endpoint and the second maintenance end endpoint to L1, where the first dimension
  • the guard end point and the second maintenance end point perform continuity detection processing to detect whether the opposite end is on or off.
  • the processing, management, and maintenance processing device further includes: an auxiliary circuit forwarding defect status entry unit 30 4, configured to: when the first maintenance end end point has a continuity detection alarm, causing the operator edge device to enter the auxiliary circuit forwarding defect status.
  • the accessory circuit forwarding defect state entering unit 304 sends a notification to the peer carrier edge device that the carrier edge device enters the accessory circuit to forward the defect state due to the accessory circuit failure, In response to the notification, the peer carrier edge device sends an Ethernet to the local accessory circuit.
  • the AIS packet, and the corresponding level of the alarm to be predicted is set to the level of the customer MEG, that is, set to L2, where the L2 level is higher than the L1 level.
  • the processing device for operation, management, and maintenance further includes: an auxiliary circuit forwarding defect state leaving unit 30 6 configured to: when the first maintenance end endpoint continuity detection alarm does not exist, cause the operator edge device to leave the auxiliary circuit to forward Defect status.
  • the accessory circuit forwarding defect state leaving portion 306 sends an announcement to the opposite terminal edge device that the accessory circuit is forwarded due to the failure of the accessory circuit failure, in response to the notification.
  • the peer device edge device stops sending Ethernet AIS packets to the local attached circuit.
  • the processing device for operation, management, and maintenance further includes: an accessory circuit reverse defect state entry unit 308, configured to: when the operator edge device does not enter the accessory circuit to forward the defect state, and is received at the first maintenance terminal end point The remote defect indication flag in the continuity check message has been set, causing the operator edge device to enter the secondary circuit reverse defect state.
  • the processing device for operation, management, and maintenance further includes: an auxiliary circuit reverse defect state leaving portion 31 0, configured to: when the operator edge device does not enter the auxiliary circuit to forward the defect state, and the first maintenance end terminal receives the continuous The remote defect indication flag in the sex detection message is no longer set, causing the operator edge device to leave the secondary circuit reverse defect state and enter the normal state.
  • the auxiliary circuit reverse defect state leaving portion 310 can also be used to cause the operator edge device to leave the auxiliary circuit reverse defect state when the first maintenance terminal end point has a continuity detection alarm, and enter the auxiliary circuit to forward the defect state. [78] When the operator's edge device enters the pseudowire forwarding defect state, the carrier edge device sends an Ethernet to the local accessory circuit.
  • AIS message and the corresponding level of the alarm to be predicted is set to the level of the customer MEG, that is, set to L2.
  • the carrier edge device stops sending Ethernet AIS packets to the local accessory circuit.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Description

说明书 操作、 管理、 与维护的处理方法及设备
[1] 技术领域
[2] 本发明涉及通信领域, 更具体地涉及一种操作、 管理、 与维护的处理方法及设 备, 其尤其适用于以太网虚拟专线业务。
[3] 发明背景
[4] 目前, 当前技术已经实现了 L2VPN (二层虚拟专用网) 的 OAM (操作、 管理
、 与维护) 部分功能需求, 同吋, 针对 AC (附属电路) 和 PW (伪线) 类型是否 相同的情形, 也出现了相应的技术方案。
[5] 在相关技术中, CE (custom edge, 客户端边缘设备) 和 PE (provide
edge, 运营商边缘设备) 并不一定直接连接, 而是可能存在本地网络 N, 例如, 如图 1所示, CE1通过网络 N1与 PE1相连, CE2通过网络 N2与 PE2相连, PE1和 PE 2之间存在伪线 (PW) (未示出) , 其中, N1和 N2指的是 Ethernet网络, 并且图 中的箭头方向表示接收或发送方向。
[6] 相关技术的技术方案中定义了 PE的缺陷类型, 其中, 转发缺陷是指影响接收信 息的故障, 逆向缺陷是指影响发送信息的故障, 具体而言, 如图 2所示, AC转发 缺陷是指影响 PE接收本端 AC方向信息的故障, AC逆向缺陷是指影响 PE传送信 息给本端 AC方向的故障。 类似地, PW转发缺陷是指影响 PE接收 PW方向信息的 故障, PW逆向缺陷是指影响 PE传送信息给 PW方向的故障。
[7] PE1要把本端 PW和 AC1的缺陷通告给 PE2和 CE2, PE2要把本端 PW和 AC2的故 障通告给 PE1和 CE1, 以让 CE和 PE都能感知远端的故障。
[8] 对于不同类型的 AC业务, 例如 ATM、 Ethernet等, PW的缺陷判断与通告可以 是完全一样的。 但对于 AC缺陷的通告, 要依赖于具体 AC类型的 OAM机制。 对 于 Ethernet类型的 AC业务, 现有技术中没有弓 I入 Ethernet
OAM机制, 具体实现如下:
[9] (1) PE (运营商边缘设备) 进入 AC (附属电路) 转发缺陷状态的标准: 当 PE 上与 AC相连 Ethernet口物理层出现告警吋, PE进入 AC转发缺陷状态; [ 10] (2) PE离幵 AC转发缺陷状态的标准: 当 PE上与 AC相连 Ethernet口物理层出现 的所有告警都已经恢复吋, PE离幵 AC转发缺陷状态;
[ 1 1] (3) PE进入 AC转发缺陷状态的执行程序: 向对端 PE通告本端 PE由于 AC故障 而进入 PW转发缺陷状态 (对端 PE收到通告后的处理未进行定义) ;
[ 12] (4) PE离幵 AC转发缺陷状态的执行程序: 向对端 PE通告本端 PE由于 AC故障 恢复而离幵 PW转发缺陷状态 (对端 PE收到通告后的处理未进行定义) ;
[ 13] 从上述内容可以看出, 目前对于 PE何吋进入 AC逆向缺陷状态、 PE何吋离幵 AC 逆向缺陷状态、 PE进入 PW转发缺陷状态的执行过程、 以及 PE离幵 PW转发缺陷 状态的执行过程等问题并未涉及。
[ 14] 因此, 现有的方案中, 对 Ethernet类型的 AC故障检测能力非常有限, 只能检测 链路故障。 而对于其他原因引起的故障不能被发现, 例如, N1的故障不能被 CE 和 PE发现, N1的故障也不能向 PE2和 CE2通告, 另外, CE1的故障也不能通告给
PE PE2和 CE2 , 这样导致 PE无法顺利进行进入或离幵特定缺陷状态的过程。
[ 15] 发明内容
[ 16] 本发明致力于克服上述相关技术中的缺陷, 为此, 本发明提供了一种操作、 管 理、 与维护的处理方法及设备。
[ 17] 本发明实施例提供一种操作、 管理、 与维护的处理方法, 用于以太网虚拟专线 业务, 在与附属电路相连的运营商边缘设备的以太网口上以及与所述附属电路 相连的客户端边缘设备的以太网口上配置外向维护端端点, 其中, 所述维护端 端点执行连续性检测处理, 并且所述运营商边缘设备根据所述维护端端点的检 测结果来进入或离幵特定缺陷状态。
[ 18] 本发明实施例提供一种操作、 管理、 与维护的处理设备, 用于以太网虚拟专线 业务, 包括:
[ 19] 维护端端点配置部, 用于在与附属电路相连的运营商边缘设备的以太网口上以 及与所述附属电路相连的客户端边缘设备的以太网口上配置外向维护端端点, 用于执行连续性检测处理, 从而确定运营商边缘设备进入或离幵特定缺陷状态
[20] 通过以上技术方案, 本发明实施例通过在运营商边缘设备上与附属电路相连的 以太网口以及客户端边缘设备上与附属电路相连的以太网口配置外向维护端端 点, 运营商边缘设备根据这些维护端端点执行连续性检测处理的检测结果, 以 及运营商边缘设备或客户端边缘设备对故障通告, 就能顺利进行进入 /离开转发 缺陷状态或逆向缺陷状态的过程。
[21] 附图简要说明
[22] 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本 发明的示例性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定 。 在附图中:
[23] 图 1是示出现有技术 VPWS业务模型的示意图;
[24] 图 2是示出现有技术 PE缺陷的示意图;
[25] 图 3是示出根据本发明实施例的操作、 管理、 与维护的处理设备的结构框图; [26] 图 4是 PE (运营商边缘设备) 进入 PW (伪线) 转发缺陷状态的处理流程; 以及 [27] 图 5是 PE进入 AC (附属电路) 转发缺陷状态的处理流程。
[28] 实施本发明的方式
[29] 以下将参照附图来具体描述本发明的优选实施例, 其中, 附图构成本申请的一 部分, 并与本发明的实施例一起用于阐释本发明的原理。
[30] 在本发明的实施例中, 对 Ethernet类型 AC (附属电路) 业务, 引入 Ethernet
OAM (操作、 管理、 与维护) 机制, 充分检测和传递 AC故障。
[31] 首先, 本发明提供了一种操作、 管理、 与维护的处理方法。
[32] 该操作、 管理、 与维护的处理方法适用于以太网虚拟专线业务 (VPWS) , 其 在运营商边缘设备 (PE) 上与附属电路 (AC) 相连的以太网口以及客户端边缘 设备 (CE) 上与附属电路相连的以太网口配置外向维护端端点 (MEP) , 其中
, 维护端端点执行连续性检测 (CC检测) 处理, 并且运营商边缘设备根据维护 端端点的检测结果来进入或离开特定缺陷状态。
[33] 其中, 上述的特定缺陷状态包括附属电路 (AC) 转发缺陷状态、 AC逆向缺陷 状态、 伪线 (PW) 转发缺陷状态、 PW逆向缺陷状态。
[34] 在运营商边缘设备与附属电路相连的以太网口之间配置第一维护端端点, 在客 户端边缘设备与附属电路相连的以太网口配置第二维护端端点, 并且将第一维 护端端点和第二维护端端点的级别设置为 LI, 其中, 第一维护端端点和第二维 护端端点执行连续性检测处理, 以相互检测对端是否通断。
[35] 当第一维护端端点出现连续性检测告警吋, 运营商边缘设备进入附属电路转发 缺陷状态。
[36] 当运营商边缘设备进入附属电路转发缺陷状态吋, 运营商边缘设备向对端运营 商边缘设备发送运营商边缘设备由于附属电路故障而进入附属电路转发缺陷状 态的通告, 响应于通告, 对端运营商边缘设备定吋向本端附属电路方向发送 Ethe met
AIS报文, 并将相应的要预知告警的级别设置成客户 MEG的级别, 即设置成 L2, 其中, L2级别高于 L1级别。
[37] 当连续性检测告警不存在吋, 运营商边缘设备离开附属电路转发缺陷状态。
[38] 当运营商边缘设备离开附属电路转发缺陷状态吋, 运营商边缘设备向对端运营 商边缘设备发送由于附属电路故障恢复而离开附属电路转发缺陷状态的通告, 响应于通告, 对端运营商边缘设备停止向本端附属电路方向发送 Ethernet
AIS报文。
[39] 当运营商边缘设备没有进入附属电路转发缺陷状态, 并且在第一维护端端点收 到的连续性检测报文中远端缺陷指示标志位已经被置位吋, 运营商边缘设备进 入附属电路逆向缺陷状态。
[40] 当第一维护端端点出现连续性检测告警吋, 运营商边缘设备离开附属电路逆向 缺陷状态, 并进入附属电路转发缺陷状态。
[41] 当运营商边缘设备没有进入附属电路转发缺陷状态, 并且第一维护端端点收到 的连续性检测报文中的远端缺陷指示标志位不再被置位吋, 运营商边缘设备离 开附属电路逆向缺陷状态, 并进入正常态。
[42] 当运营商边缘设备进入伪线转发缺陷状态吋, 运营商边缘设备定吋向本端附属 电路方向发送 Ethernet
AIS报文, 并将相应的要预知告警的级别设置成客户 MEG的级别, 即设置为 L2。
[43] 运营商边缘设备离开伪线转发缺陷状态吋, 运营商边缘设备停止向本端附属电 路方向发送 Ethernet AIS报文。 [44] 以下将通过参照图 1、 图 3、 和图 4并结合实例来详细说明本发明的处理方法的 操作。
[45] 在与 AC (附属电路) 相连的 PE (运营商边缘设备) 的 Ethernet口上配置一个外 向 MEP (维护端端点) , 其 MEG
Level设置成 Ll。 在与 AC相连的 CE (客户端边缘设备) 的 Ethernet口上配置一个 外向 MEP, 其 MEG
Level设置成 Ll。 所述对应的两个 MEP启动 CC检测功能, 相互检测对端是否通断 。 另夕卜, 在 CE上与 AC相连的 Ethernet口配置另一个外向 MEP, 其 MEG
Level设置成 L2, L2的级别高于 Ll, 同吋在对端的 CE与 AC相连的 Ethernet口配置 一个外向 MEP, 其 MEG
Level设置成 L2。 这两个级别为 L2的对应的 MEP启动 CC检测功能, 相互检测对端 是否通断。 在 PE上要通过用户配置记录 L2的信息。
[46] (1) PE进入 AC转发缺陷状态的标准
[47] a.当 PE上与 AC相连的 Ethernet口物理层出现告警吋, PE进入 AC转发缺陷状态。
[48] b.当 PE上的 MEP检测到 CC丢失吋, PE进入 AC转发缺陷状态。
[49] (2) PE离开 AC转发缺陷状态的标准
[50] a.当 PE上与 AC相连 Ethernet口物理层出现的所有告警以及 CC告警都已经恢复吋
, PE离开 AC转发缺陷状态。
[51] (3) PE进入 AC逆向缺陷状态的标准
[52] a.当 PE没有进入 AC缺陷状态, 且 PE上 MEG
Level设置成 L 1的 MEP收到的 CC报文中其 RDI标志位已经被置位吋, PE进入 AC 逆向缺陷状态。
[53] (4) PE离开 AC逆向缺陷状态的标准
[54] a.当满足 (1) 中的条件吋, PE离开 AC逆向缺陷状态, 进入 AC转发缺陷状态。
[55] b.当 PE没有进入 AC转发缺陷状态, 且其上 MEG
Level设置成 L1的 MEP收到的 CC报文中的 RDI标志位不再被置位吋, PE离开 AC 逆向缺陷状, 进入正常态。
[56] (5) PE进入 PW转发缺陷状态的执行程序 [57] 如图 4所示, 以 PE1为例说明其进入 PW转发缺陷状态的执行程序。
[58] a.定吋向本端 AC方向 (CE1) 发送 Ethernet AIS报文 (格式参见 OAM functions and mechanisms for Ethernet based networks ITU-T Recommendation
Y.1731) , 将相应的要预知告警的级别设置成客户 MEG的 Level, 即 L2, 使相应 的客户可以获知该消息, 目的是实现告警抑制作用。
[59] (6) PE离开 PW转发缺陷状态的执行程序
[60] 下面以 PE1为例说明其离开 PW转发缺陷状态的执行程序。
[61] a.停止向本端 AC方向 (CE1) 发送 Ethernet AIS报文。
[62] (7) PE进入 AC转发缺陷状态的执行程序
[63] 如图 5所示, 以 PE1为例说明其进入 AC转发缺陷状态的执行程序。
[64] a.PEl向 PE2通告 PE1由于 AC故障而进入 PW转发缺陷状态。 PE2收到通告后, 定 吋向本端 AC方向 (CE2) 发送 Ethernet
AIS报文, 将相应的要预知告警的级别设置成客户 MEG的 Level, 即设置为 L2。
[65] (8) PE离开 AC转发缺陷状态的执行程序
[66] a.PEl向 PE2通告 PE1由于 AC故障恢复而离开 PW转发缺陷状态。 PE2收到通告后 , 停止向本端 AC方向 (CE2) 发送 Ethernet AIS报文。
[67] 另外, 本发明还提供了一种操作、 管理、 与维护的处理设备, 其中, 图 3中示 出了根据本发明的操作、 管理、 与维护的处理设备的结构。
[68] 如图 3所示, 根据本发明的适用于以太网虚拟专线业务的操作、 管理、 与维护 的处理设备包括: 维护端端点配置部 302, 用于在运营商边缘设备上与附属电路 相连的以太网口以及客户端边缘设备上与附属电路相连的以太网口配置外向维 护端端点, 其中, 维护端端点执行连续性检测处理, 并且运营商边缘设备根据 维护端端点的检测结果来进入或离开特定缺陷状态。
[69] 其中, 上述的特定缺陷状态包括附属电路 (AC) 转发缺陷状态、 AC逆向缺陷 状态、 伪线 (PW) 转发缺陷状态、 PW逆向缺陷状态。
[70] 维护端端点配置部在运营商边缘设备与附属电路相连的以太网口之间配置第一 维护端端点, 在客户端边缘设备与附属电路相连的以太网口配置第二维护端端 点, 并且将第一维护端端点和第二维护端端点的级别设置为 Ll, 其中, 第一维 护端端点和第二维护端端点执行连续性检测处理, 以相互检测对端是否通断。
[71] 操作、 管理、 与维护的处理设备进一步包括: 附属电路转发缺陷状态进入部 30 4, 用于当第一维护端端点出现连续性检测告警吋, 使运营商边缘设备进入附属 电路转发缺陷状态。
[72] 当运营商边缘设备进入附属电路转发缺陷状态吋, 附属电路转发缺陷状态进入 部 304向对端运营商边缘设备发送运营商边缘设备由于附属电路故障而进入附属 电路转发缺陷状态的通告, 响应于通告, 对端运营商边缘设备定吋向本端附属 电路方向发送 Ethernet
AIS报文, 并将相应的要预知告警的级别设置成客户 MEG的级别, 即设置成 L2, 其中, L2级别高于 L1级别。
[73] 操作、 管理、 与维护的处理设备进一步包括: 附属电路转发缺陷状态离开部 30 6, 用于当第一维护端端点连续性检测告警不存在吋, 使运营商边缘设备离开附 属电路转发缺陷状态。
[74] 当运营商边缘设备离开附属电路转发缺陷状态吋, 附属电路转发缺陷状态离开 部 306向对端运营商边缘设备发送由于附属电路故障恢复而离开附属电路转发缺 陷状态的通告, 响应于通告, 对端运营商边缘设备停止向本端附属电路方向发 送 Ethernet AIS报文。
[75] 操作、 管理、 与维护的处理设备进一步包括: 附属电路逆向缺陷状态进入部 30 8, 用于当运营商边缘设备没有进入附属电路转发缺陷状态, 并且在第一维护端 端点收到的连续性检测报文中远端缺陷指示标志位已经被置位吋, 使运营商边 缘设备进入附属电路逆向缺陷状态。
[76] 操作、 管理、 与维护的处理设备进一步包括: 附属电路逆向缺陷状态离开部 31 0, 用于当运营商边缘设备没有进入附属电路转发缺陷状态, 并且第一维护端端 点收到的连续性检测报文中的远端缺陷指示标志位不再被置位吋, 使运营商边 缘设备离开附属电路逆向缺陷状态, 并进入正常态。
[77] 附属电路逆向缺陷状态离开部 310还可用于当第一维护端端点出现连续性检测 告警吋, 使运营商边缘设备离开附属电路逆向缺陷状态, 并进入附属电路转发 缺陷状态。 [78] 当运营商边缘设备进入伪线转发缺陷状态吋, 运营商边缘设备定吋向本端附属 电路方向发送 Ethernet
AIS报文, 并将相应的要预知告警的级别设置成客户 MEG的级别, 即设置为 L2。
[79] 当运营商边缘设备离开伪线转发缺陷状态吋, 运营商边缘设备停止向本端附属 电路方向发送 Ethernet AIS报文。
[80] 通过本发明, 可以充分检测和传递 Ethernet业务的故障。
[81] 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的 技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内 , 所作的任何修改、 等同替换、 改进等, 均应包括在本发明的保护范围之内。

Claims

权利要求书
[i] i.
一种操作、 管理、 与维护的处理方法, 用于以太网虚拟专线业务, 其特征 在于, 在与附属电路相连的运营商边缘设备的以太网口上以及与所述附属 电路相连的客户端边缘设备的以太网口上配置外向维护端端点, 其中, 所 述维护端端点执行连续性检测处理, 并且所述运营商边缘设备根据所述维 护端端点的检测结果来进入或离开特定缺陷状态。
[2] 2.根据权利要求 1所述的操作、 管理、 与维护的处理方法, 其特征在于, 所 述运营商边缘设备根据所述维护端端点的检测结果来进入或离开特定缺陷 状态包括:
如果所述维护端端点出现连续性检测告警, 则所述运营商边缘设备进入附 属电路转发缺陷状态, 否则, 不进入附属电路转发缺陷状态。
[3] 3.根据权利要求 2所述的操作、 管理、 与维护的处理方法, 其特征在于, 当 所述连续性检测告警不存在吋, 所述运营商边缘设备离开附属电路转发缺 陷状态。
[4] 4.根据权利要求 3所述的操作、 管理、 与维护的处理方法, 其特征在于, 当 所述运营商边缘设备离开附属电路转发缺陷状态吋, 所述方法还包括: 所述运营商边缘设备向所述对端运营商边缘设备发送其离开附属电路转发 缺陷状态的通告, 响应于所述通告, 所述对端运营商边缘设备停止向本端 附属电路方向发送 Ethernet AIS报文。
[5] 5.根据权利要求 2所述的操作、 管理、 与维护的处理方法, 其特征在于, 当 所述运营商边缘设备没有进入附属电路转发缺陷状态, 并且在所述维护端 端点收到的连续性检测报文中远端缺陷指示标志位已经被置位吋, 则确定 所述运营商边缘设备进入附属电路逆向缺陷状态。
[6] 6.根据权利要求 5所述的操作、 管理、 与维护的处理方法, 其特征在于, 当 所述运营商边缘设备没有进入附属电路转发缺陷状态, 并且所述维护端端 点收到的连续性检测报文中的远端缺陷指示标志位不再被置位吋, 则确定 所述运营商边缘设备离开附属电路逆向缺陷状态, 并进入正常态。
[7] 7.—种操作、 管理、 与维护的处理设备, 用于以太网虚拟专线业务, 其特 征在于, 包括:
维护端端点配置部, 用于在与附属电路相连的运营商边缘设备的以太网口 上以及与所述附属电路相连的客户端边缘设备的以太网口上配置外向维护 端端点, 用于执行连续性检测处理, 从而确定运营商边缘设备进入或离开 特定缺陷状态。
[8] 8.根据权利要求 7所述的操作、 管理、 与维护的处理设备, 其特征在于, 所 述维护端端点配置部在所述运营商边缘设备与所述附属电路相连的以太网 口之间配置第一维护端端点, 在所述客户端边缘设备与所述附属电路相连 的以太网口配置第二维护端端点, 并且将所述第一维护端端点和所述第二 维护端端点的级别设置为 Ll, 其中, 所述第一维护端端点和所述第二维护 端端点执行所述连续性检测处理, 以相互检测对端是否通断。
[9] 9.根据权利要求 8所述的操作、 管理、 与维护的处理设备, 其特征在于, 进 一步包括:
附属电路转发缺陷状态进入部, 用于在所述第一维护端端点出现连续性检 测告警后, 使所述运营商边缘设备进入附属电路转发缺陷状态, 否则, 则 不使所述运营商边缘设备进入附属电路转发缺陷状态。
[10] 10.根据权利要求 9所述的操作、 管理、 与维护的处理设备, 其特征在于, 进一步包括:
附属电路转发缺陷状态离开部, 用于当所述连续性检测告警不存在, 使所 述运营商边缘设备离开附属电路转发缺陷状态, 并向对端运营商边缘设备 发送其离开附属电路转发缺陷状态的通告。
[11] 11.根据权利要求 9所述的操作、 管理、 与维护的处理设备, 其特征在于, 进一步包括:
附属电路逆向缺陷状态进入部, 用于当所述运营商边缘设备没有进入附属 电路转发缺陷状态, 并且在所述第一维护端端点收到的连续性检测报文中 远端缺陷指示标志位已经被置位吋, 使所述运营商边缘设备进入附属电路 逆向缺陷状态。 [12] 12.根据权利要求 11所述的操作、 管理、 与维护的处理设备, 其特征在于, 进一步包括:
附属电路逆向缺陷状态离开部, 用于当所述运营商边缘设备没有进入附属 电路转发缺陷状态, 并且所述第一维护端端点收到的连续性检测报文中的 远端缺陷指示标志位不再被置位吋, 使所述运营商边缘设备离开附属电路 逆向缺陷状态, 并进入正常态。
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