WO2012149856A1 - 一种rrpp环网中链路故障检测及处理方法、装置 - Google Patents

一种rrpp环网中链路故障检测及处理方法、装置 Download PDF

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Publication number
WO2012149856A1
WO2012149856A1 PCT/CN2012/073657 CN2012073657W WO2012149856A1 WO 2012149856 A1 WO2012149856 A1 WO 2012149856A1 CN 2012073657 W CN2012073657 W CN 2012073657W WO 2012149856 A1 WO2012149856 A1 WO 2012149856A1
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port
loop
packet
master node
rrpp
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PCT/CN2012/073657
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French (fr)
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黄建兵
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42Loop networks
    • H04L12/437Ring fault isolation or reconfiguration

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  • the invention relates to a link fault detection and processing method and device in an RRPP ring network.
  • the application is submitted to the Chinese Patent Office on August 12, 2011, and the application number is 201110231540. 7.
  • the invention name is "A link failure in an RRPP ring network.
  • the present invention relates to the field of network communication technologies, and in particular, to a link fault detection and processing method and apparatus in a RRPP (Rapid Ring Protect Protocol) ring network.
  • the primary node In the RRPP ring network, the primary node periodically sends a loop state detection packet through its primary port.
  • the primary node If the secondary node receives the loop state detection packet, the primary node is complete. Slave ports to prevent data loops from occurring. The data packets in the RRPP ring are forwarded on the link formed by the primary port and the transit node of the primary node.
  • the slave port of the master node does not receive the loop state detection message within the timeout period of the expiration timer, then the master node opens the slave port, and the slave port and the transit node of the master node are enabled.
  • the redundant backup link forwards data packets.
  • the slave port of the open master node When the link fault is a one-way fault, the slave port of the open master node will generate a reverse loop. The data packets in the loop will generate a storm and the loop service will be abnormal.
  • an embodiment of the present invention provides a link fault detection and processing method and device in an RRPP ring network, so as to avoid a reverse loop when a link one-way fault occurs.
  • a link fault detection and processing method in an RRPP ring network including:
  • the master node If the slave port of the master node does not receive the loop state detection packet sent by the master port of the master node within the timeout period of the dead timer, the master node sends a single-pass loop detection report through the slave port. And start the expiration timer of the primary port;
  • the master node If the primary port of the primary node receives the ticket during the timeout period of the failure timer of the primary port Passing the loop detection packet, the master node maintains the blocking state of the slave port, and reports the single-pass loop alarm information; if the master node fails the timer, the master node If the primary port does not receive the single-pass loop detection packet, the master node releases the blocked state of the slave port, and forwards the data packet through the slave port.
  • a master node in a ring network comprising: a master port, a packet for detecting a loop state, and a slave port, configured to receive a loop state detection packet sent by the master port, where the master node further includes:
  • the slave port expiration timer is configured to time the packet expiration time of the slave port of the master node;
  • the master port expiration timer is configured to time the packet expiration time of the master port of the master node;
  • a processing module configured to determine whether the slave port of the master node receives a loop state detection message within a timeout period of the slave port failure timer, and if not, send a single-pass loop through the slave port Detecting a message, and triggering the primary port failure timer to start timing;
  • the fault detection and processing module is further configured to: determine whether the primary port receives the single-pass loop detection message within a time period of the primary port failure timer; if received, maintain the The blocked state of the slave port is reported, and the single-loop loop alarm information is reported; if not received, the blocked state of the slave port is released, and the data packet is forwarded by the slave port.
  • the link fault when the link fault is found to be a one-way fault, the slave port is continuously blocked, thereby preventing data packets from being generated in the reverse loop.
  • Storms, and timely reporting of police information improve the stability of the loop business.
  • BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.
  • FIG. 1 is a flowchart of a method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an RRPP ring network according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a one-way failure of an RRPP ring network according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a two-way fault of an RRPP ring network according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a master node according to an embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.
  • An embodiment of the present invention provides a link fault detection and processing method in an RRPP ring network. As shown in FIG. 1 , the method includes the following operations:
  • the master node If the slave port of the master node does not receive the loop state detection packet sent by the master port of the master node within the timeout period of the failing timer, the master node sends a single-pass loop detection report through the slave port. And start the expiration timer of the primary port;
  • the single-pass loop detection packet is implemented by adding a new type of RRPP packet.
  • the master node If the primary port of the master node receives the single-pass loop detection packet, the master node maintains the blocked state of the slave port. And reporting the single-loop loop alarm information;
  • the blocking state of the port is to prevent the port from forwarding data packets and receiving data packets.
  • the ring-to-loop alarm information carries the ring ID and domain ID of the RRPP ring network, and is used to notify the network management device.
  • a reverse loop in which a single pass is generated in the RRPP ring network.
  • the primary node If the primary port of the primary node does not receive the single-loop detection packet, the primary node releases the blocked state of the secondary port. Transmitting data packets through the slave port.
  • the link fault is a one-way fault. If the slave port is blocked at this time, a single-pass reverse loop is formed.
  • the single-pass reverse loop refers to the one-way connected reverse loop formed by the master node from the port->transport node->the master node of the master node.
  • the slave port continues to be blocked, thereby preventing the data packet from generating a storm in the reverse loop, and reporting the alarm information in time, so as to eliminate the fault as soon as possible. , improve the stability of the loop business.
  • the Ethernet switch SW1 is the master node, and the system bridge MAC (Media Access Control) address is: AAAA-AAAA-AAAA; SW2 ⁇ SW4 are transit nodes;
  • the domain ID is 1.
  • the domain ID of the ring network is used to identify the domain to which the RRPP ring belongs.
  • the ring ID of the ring network is 1, and the ring ID of the ring network is used.
  • the primary node blocks its secondary port to prevent reverse loops, and the data message is forwarded in the link consisting of the secondary port and the transit node of the primary node.
  • the master node SW1 periodically sends a loop state detection message, and at the beginning of the transmission period of each loop state detection message, the master node SW1 starts the expiration timer of the slave port, if the slave port of the master node SW1 is at the slave port. If the loop state detection message is not received within the timeout period of the expiration timer, the master node SW1 sends a single-pass loop detection packet through the slave port, and starts the failure timer of the master port; if the master node SW1 is the master The port receives the one-way loop detection packet in the timeout period of the failure timer of the master port, indicating that the link fault belongs to the one-way fault shown in Figure 3.
  • the master node SW1 continues to block the slave port and reports to the network management system.
  • Single-loop loop alarm information so that the network administrator or the operator can remove the one-way fault of the RRPP ring network after receiving the single-loop loop alarm information; if the master port of the master node SW1 is in the master port's failure timer If the single-loop loop detection packet is not received within the time, it indicates that the link fault belongs to the bidirectional fault shown in Figure 4, and the master node SW1 releases the slave end.
  • Blocking state by forwarding data packets from the port.
  • the single-pass loop detection packet is a new type of RRPP packet, and the packet protocol type is assigned to indicate that the RRPP packet is used for detecting the single-pass reverse loop.
  • the content of the RRPP packets is as follows: The protocol type, the domain ID, the ring ID, and the system bridge MAC address of the master node.
  • the RRPP packet structure is as follows:
  • the value of the protocol type is "9", indicating that the RRPP packet is a single-loop loop detection packet.
  • All or part of the steps of implementing the foregoing method embodiments may be performed by hardware related to the program instructions.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiments;
  • the foregoing storage medium includes: various media that can store program codes, such as wake up, wake up, disk or optical disc.
  • the embodiment of the present invention further provides a primary node in an RRPP ring network, and the structure thereof is as shown in FIG. 5, which specifically includes: a primary port 501, configured to send a loop state detection packet;
  • the slave port 502 is configured to receive a loop state detection message sent by the master port 501.
  • the slave port expiration timer 503 is configured to time the packet expiration time of the slave port 502 of the master node;
  • the master port failure timer 504 is configured to time the packet expiration time of the master port 501 of the master node; the foregoing packet expiration time is a predetermined period of time, if the master port or the slave port is within the time period If the specified packet is not received, it indicates that the link is faulty.
  • the fault detection and processing module 505 is configured to determine whether the slave port 502 of the master node receives the loop state detection packet sent by the master port 501 within the time period of the slave port failure timer 503, if not, The single-pass loop detection packet is sent by the slave port 502, and the master port failure timer 504 is triggered to start timing.
  • the single-pass loop detection packet is a new type of RRPP packet, and the new one is added.
  • the protocol type of the RRPP packet is used to detect the single-pass reverse loop.
  • the fault detection and processing module 503 is further configured to: determine whether the primary port 501 receives the single-pass loop detection packet within a time period of the primary port failure timer 504; if received, maintain the location The blocking state of the slave port 502 is reported, and the single-pass loop alarm information is reported; if not received, the blocked state of the slave port 502 is released, and the data packet is forwarded by the slave port 502.
  • the single-pass loop alarm information carries the ring ID and the domain ID of the RRPP ring network, and is used to notify the network management device to generate a single-pass reverse loop in the RRPP ring network.
  • the primary port 501 receives the single-loop loop detection packet within the timeout period, it indicates that the link fault is a one-way fault. If the resistance of the slave port is released at this time, a single-pass reverse loop is formed. road.
  • the fault detection and processing module continues to block the slave port, thereby preventing the data packet from generating a storm in the reverse loop and reporting the alarm information in time. In order to eliminate faults as soon as possible, improve the stability of the loop business.

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Description

一种 RRPP环网中链路故障检测及处理方法、 装置 本申请要求于 2011年 8月 12日提交中国专利局、 申请号为 201110231540. 7、发明 名称为 "一种 RRPP环网中链路故障检测及处理方法、 装置"的中国专利申请的优先权, 其全部内容通过弓 I用结合在本申请中。 技术领域 本发明实施例涉及网络通信技术领域, 尤其涉及一种 RRPP ( Rapid Ring Protect Protocol , 快速环网保护协议) 环网中链路故障检测及处理方法、 装置。 背景技术 在 RRPP环网中, 主节点通过其主端口周期性发送环路状态检测报文, 如果该主节点 的从端口收到环路状态检测报文, 表示 RRPP环网完整, 主节点阻塞上述从端口以防止产 生数据环路。 RRPP环网中的数据报文在主节点的主端口和传输节点构成的链路上进行转 发。
当上述链路发生故障时, 主节点的从端口在失效计时器的计时时间内没有收到环路 状态检测报文, 则主节点会开放从端口, 启用由主节点的从端口和传输节点构成的冗余 备份链路进行数据报文转发。
发明人在实现本发明的过程中, 发现现有技术中至少存在如下问题:
当链路故障为单向故障时, 开放主节点的从端口会产生逆向环路, 环路内的数据报 文会产生风暴, 导致环路业务异常。 发明内容
为解决上述问题, 本发明的实施例提供了一种 RRPP环网中链路故障检测及处理方 法、 装置, 从而避免链路单向故障时, 产生逆向环路。
本发明的目的是通过以下技术方案实现的:
一种 RRPP环网中链路故障检测及处理方法, 包括:
如果主节点的从端口在失效定时器的计时时间内没有收到所述主节点的主端口发 送的环路状态检测报文, 则所述主节点通过所述从端口发送单通环路检测报文, 并启动 主端口的失效定时器;
如果在所述主端口的失效定时器的计时时间内,所述主节点的主端口接收到所述单 通环路检测报文,则所述主节点保持所述从端口的阻塞状态,并上报单通环路告警信息; 如果在所述主端口的失效定时器的计时时间内,所述主节点的主端口没有接收到所 述单通环路检测报文, 则所述主节点解除所述从端口的阻塞状态, 通过所述从端口转发 数据报文。
一种环网中的主节点, 包括: 主端口、 用于发送环路状态检测报文, 从端口、 用于 接收所述主端口发送的环路状态检测报文, 所述主节点还包括:
从端口失效定时器, 用于对所述主节点的从端口的收包失效时间进行计时; 主端口失效定时器, 用于对所述主节点的主端口的收包失效时间进行计时; 故障检测及处理模块,用于判断所述主节点的从端口在所述从端口失效定时器的计 时时间内是否接收到环路状态检测报文, 如果没有, 则通过所述从端口发送单通环路检 测报文, 并触发所述主端口失效定时器开始计时;
所述故障检测及处理模块还用于,判断所述主端口在所述主端口失效定时器的计时 时间内, 是否接收到所述单通环路检测报文; 如果接收到, 则保持所述从端口的阻塞状 态, 并上报单通环路告警信息; 如果没有接收到, 则解除所述从端口的阻塞状态, 通过 所述从端口转发数据报文。
由上述本发明的实施例提供的技术方案可以看出, 本发明实施例中, 由于在发现链 路故障为单向故障时, 继续阻塞从端口, 从而避免了数据报文在逆向环路中产生风暴, 并及时上报告警信息, 提高了环路业务的稳定性。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或现有 技术描述中所需要使用的附图作一简单地介绍, 显而易见地, 下面描述中的附图仅仅是 本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例提供的方法流程图;
图 2为本发明实施例提供的 RRPP环网结构示意图;
图 3为本发明实施例提供的 RRPP环网出现单向故障时的示意图;
图 4为本发明实施例提供的 RRPP环网出现双向故障时的示意图;
图 5为本发明实施例提供的主节点结构示意图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整 地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基 于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有 其他实施例, 都属于本发明保护的范围。
本发明实施例提供一种 RRPP环网中链路故障检测及处理方法, 如图 1所示, 该方法 具体包括如下操作:
S10K如果主节点的从端口在失效定时器的计时时间内没有收到该主节点的主端口 发送的环路状态检测报文, 则所述主节点通过所述从端口发送单通环路检测报文, 并启 动主端口的失效定时器;
本发明实施例中, 可以通过新增类型的 RRPP报文来实现上述单通环路检测报文。
5102、 如果在所述主端口的失效定时器的计时时间内, 所述主节点的主端口接收到 所述单通环路检测报文, 则所述主节点保持所述从端口的阻塞状态, 并上报单通环路告 警信息;
其中, 端口的阻塞状态是指, 阻止该端口转发数据报文及接收数据报文; 单通环路告警信息中携带所述 RRPP环网的环 ID和域 ID, 用于告知网管设备, 在所述 RRPP环网中产生单通的逆向环路。
5103、 如果在所述主端口的失效定时器的计时时间内, 所述主节点的主端口没有接 收到所述单通环路检测报文, 则所述主节点解除所述从端口的阻塞状态, 通过所述从端 口转发数据报文。
其中, 如果上述主端口在计时时间内接收到上述单通环路检测报文, 表明链路故障 属于单向故障, 如果此时解除对从端口的阻塞, 则会形成单通的逆向环路(单通的逆向 环路是指由主节点的从端口一〉传输节点一〉主节点的主端口构成的单向连通的逆向环 路) 。 而本发明实施例提供的方法中, 当链路故障为单向故障时, 继续阻塞从端口, 从 而避免了数据报文在逆向环路中产生风暴, 并及时上报告警信息, 以便尽快排除故障, 提高了环路业务的稳定性。
下面将对本发明实施例在实际应用过程中的具体实现方式进行详细的说明。
在图 2所示的 RRPP环网中,以太网交换机 SW1为主节点,其系统桥 MAC(Media Access Control , 介质访问控制) 地址为: AAAA-AAAA-AAAA; SW2〜SW4为传输节点; 环网的域 ID为 1, 环网的域 ID用来标识 RRPP环网所属的域; 环网的环 ID为 1, 环网的环 ID用 来标识 RRPP环网, 以便与其他 RRPP换区别开来。 正常情况下, 主节点阻塞其从端口以 防止产生逆向环路, 数据报文在由主节点的从端口和传输节点构成的链路中进行转发。
主节点 SW1周期性地发送环路状态检测报文,在每个环路状态检测报文的发送周期 开始时, 主节点 SW1启动从端口的失效定时器, 如果主节点 SW1的从端口在从端口的失 效定时器的计时时间内没有接收到上述环路状态检测报文, 则主节点 SW1通过从端口发 送单通环路检测报文, 并启动主端口的失效定时器; 如果主节点 SW1的主端口在主端口 的失效定时器的计时时间内接收到上述单通环路检测报文, 则表明链路故障属于图 3所 示的单向故障, 主节点 SW1继续阻塞从端口, 并向网管上报单通环路告警信息, 以便网 管或者操作人员在接收到单通环路告警信息后, 对该 RRPP环网的单向故障进行排除; 如果主节点 SW1的主端口在主端口的失效定时器计时时间内没有接收到上述单通环路检 测报文,则表明链路故障属于图 4所示的双向故障,主节点 SW1解除从端口的阻塞状态, 通过从端口转发数据报文。
其中, 上述单通环路检测报文是一种新增类型的 RRPP报文, 为其报文协议类型赋 值, 以表明该 RRPP报文用来进行单通逆向环路的检测。 新增类型的 RRPP报文内容主要 包括: 协议类型、 域 ID、 环 ID和主节点的系统桥 MAC, 作为举例而非限定, 该 RRPP报 文的结构如下所示:
Figure imgf000006_0001
其中, 为协议类型赋值为 " 9 ", 表示该 RRPP报文为单通环路检测报文。
实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成,前述 的程序可以存储于一计算机可读取存储介质中, 该程序在执行时, 执行包括上述方法实 施例的步骤; 而前述的存储介质包括: 醒、 醒、 磁碟或者光盘等各种可以存储程序代 码的介质。
本发明实施例还提供了一种 RRPP环网中的主节点, 其结构如图 5所示, 具体包括: 主端口 501, 用于发送环路状态检测报文;
从端口 502, 用于接收所述主端口 501发送的环路状态检测报文;
从端口失效定时器 503, 用于对所述主节点的从端口 502的收包失效时间进行计时; 主端口失效定时器 504, 用于对所述主节点的主端口 501的收包失效时间进行计时; 上述的收包失效时间是预先规定的时间段, 如果主端口或从端口在这个时间段内没 有收到收到指定的报文, 则表明链路存在故障。
故障检测及处理模块 505,用于判断所述主节点的从端口 502在所述从端口失效定时 器 503的计时时间内是否接收到主端口 501发送的环路状态检测报文, 如果没有, 则通过 所述从端口 502发送单通环路检测报文, 并触发所述主端口失效定时器 504开始计时; 其中, 单通环路检测报文为新增类型的 RRPP报文, 所述新增类型的 RRPP报文的协议 类型标识了所述新增类型的 RRPP报文用来进行单通逆向环路的检测。
故障检测及处理模块 503还用于, 判断所述主端口 501在所述主端口失效定时器 504 的计时时间内,是否接收到所述单通环路检测报文;如果接收到,则保持所述从端口 502 的阻塞状态, 并上报单通环路告警信息; 如果没有接收到, 则解除所述从端口 502的阻 塞状态, 通过所述从端口 502转发数据报文。
单通环路告警信息中携带所述 RRPP环网的环 ID和域 ID, 用于告知网管设备, 在所述 RRPP环网中产生单通的逆向环路。
其中, 如果上述主端口 501在计时时间内接收到上述单通环路检测报文, 表明链路 故障属于单向故障, 如果此时解除对从端口的阻值, 则会形成单通的逆向环路。 而本发 明实施例提供的主节点, 当链路故障为单向故障时, 故障检测及处理模块继续阻塞从端 口, 从而避免了数据报文在逆向环路中产生风暴, 并及时上报告警信息, 以便尽快排除 故障, 提高了环路业务的稳定性。 以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到的变化或替 换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应该以权利要求的保 护范围为准。

Claims

权利要求书
1、 一种 RRPP环网中链路故障检测及处理方法, 其特征在于, 包括:
如果主节点的从端口在失效定时器的计时时间内没有收到所述主节点的主端口发 送的环路状态检测报文, 则所述主节点通过所述从端口发送单通环路检测报文, 并启动 主端口的失效定时器;
如果在所述主端口的失效定时器的计时时间内,所述主节点的主端口接收到所述单 通环路检测报文,则所述主节点保持所述从端口的阻塞状态,并上报单通环路告警信息; 如果在所述主端口的失效定时器的计时时间内,所述主节点的主端口没有接收到所 述单通环路检测报文, 则所述主节点解除所述从端口的阻塞状态, 通过所述从端口转发 数据报文。
2、 根据权利要求 1所述的方法, 其特征在于, 所述单通环路检测报文为新增类型的 RRPP报文,所述新增类型的 RRPP报文的协议类型标识了所述新增类型的 RRPP报文用来进 行单通逆向环路的检测。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述单通环路告警信息中携带所 述 RRPP环网的环 ID和域 ID,用于告知网管设备,在所述 RRPP环网中产生单通的逆向环路。
4、 一种环网中的主节点, 包括: 主端口、 用于发送环路状态检测报文,
从端口、 用于接收所述主端口发送的环路状态检测报文, 其特征在于, 所述主节点 还包括:
从端口失效定时器, 用于对所述主节点的从端口的收包失效时间进行计时; 主端口失效定时器, 用于对所述主节点的主端口的收包失效时间进行计时; 故障检测及处理模块,用于判断所述主节点的从端口在所述从端口失效定时器的计 时时间内是否接收到环路状态检测报文, 如果没有, 则通过所述从端口发送单通环路检 测报文, 并触发所述主端口失效定时器开始计时;
所述故障检测及处理模块还用于,判断所述主端口在所述主端口失效定时器的计时 时间内, 是否接收到所述单通环路检测报文; 如果接收到, 则保持所述从端口的阻塞状 态, 并上报单通环路告警信息; 如果没有接收到, 则解除所述从端口的阻塞状态, 通过 所述从端口转发数据报文。
5、 根据权利要求 4所述的主节点, 其特征在于, 所述单通环路检测报文为新增类型 的 RRPP报文,所述新增类型的 RRPP报文的协议类型标识了所述新增类型的 RRPP报文用来 进行单通逆向环路的检测。
6、 根据权利要求 4或 5所述的主节点, 其特征在于, 单通环路告警信息中携带所述 RRPP环网的环 ID和域 ID, 用于告知网管设备, 在所述 RRPP环网中产生单通的逆向环路。
PCT/CN2012/073657 2011-08-12 2012-04-09 一种rrpp环网中链路故障检测及处理方法、装置 WO2012149856A1 (zh)

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