WO2008031347A1 - Procédé et appareil de réalisation de commutation de protection dans l'ethernet en anneau - Google Patents

Procédé et appareil de réalisation de commutation de protection dans l'ethernet en anneau Download PDF

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Publication number
WO2008031347A1
WO2008031347A1 PCT/CN2007/070512 CN2007070512W WO2008031347A1 WO 2008031347 A1 WO2008031347 A1 WO 2008031347A1 CN 2007070512 W CN2007070512 W CN 2007070512W WO 2008031347 A1 WO2008031347 A1 WO 2008031347A1
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WO
WIPO (PCT)
Prior art keywords
ring network
ring
fault
protection switching
timer
Prior art date
Application number
PCT/CN2007/070512
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English (en)
Chinese (zh)
Inventor
Suping Zhai
Yan Wang
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008031347A1 publication Critical patent/WO2008031347A1/fr

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Classifications

    • 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]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration

Definitions

  • the present invention relates to Ethernet technology, and more particularly to a method and apparatus for implementing protection switching in a ring Ethernet. Background of the invention
  • Multipoint connections can effectively support a wide range of communication services.
  • a ring with protection switching mechanism can be used. Ethernet structure.
  • FIG. 1 is a schematic diagram of a conventional ring Ethernet structure.
  • the ring Ethernet structure is simply referred to as a ring network.
  • S1 will block its secondary port for user data packets when the ring network is in normal communication to avoid broadcast storms caused by data loops.
  • transit nodes other non-primary nodes in the ring network other than the primary node S1 are referred to as transit nodes.
  • FIG. 2 shows the schematic diagram of the existing ring Ethernet protection switching.
  • S1 when a fault occurs in the ring network, S1 immediately enters the ring fault state, and opens its own secondary port for the user data message to allow the user data to pass; and, in S1 and the ring network The other nodes respectively refresh their forwarding tables to re-top the learning; in addition, S1 continuously sends polling messages in the ring network by its primary port. Once the ring network fault is removed, S1 can pass its secondary port. Receive the polling message sent by itself. In this case, S1 is restored to the normal state by the ring fault state, and its secondary port is blocked for user data packets to prohibit user data packets from passing.
  • the ring networks shown in Figure 1 and Figure 2 are hierarchical network structures, and each layer in the ring network.
  • the network structure has a corresponding protection switching capability.
  • the protection switching operation shown in Figure 2 is a protection switching operation at the data link layer.
  • the data link layer performs frequent protection switching operations. .
  • the data link layer is used as an example.
  • the network structure of each layer in the ring network has the problem of performing unnecessary or frequent protection switching operations, and unnecessary or frequent protection switching operations are performed. A lot of waste of network resources and a significant reduction in network performance. Summary of the invention
  • Embodiments of the present invention provide a method for implementing protection switching in a ring Ethernet to effectively avoid unnecessary protection switching operations.
  • Embodiments of the present invention provide a device for implementing protection switching in a ring Ethernet to effectively avoid unnecessary protection switching operations.
  • a method for implementing protection switching in a ring Ethernet comprising:
  • a preset delay timer is started; when the delay timer expires and the ring network fault is detected again, the normal work is performed.
  • a protection switching operation in which the state switches to a ring fault state.
  • a method for implementing protection switching in a ring Ethernet comprising:
  • a preset recovery wait timer is started; after the recovery wait timer expires, an operation for restoring to a normal working state is performed.
  • a device for implementing protection switching in a ring Ethernet comprising: a ring network fault determination unit, a delay timer, and a protection switching unit;
  • the ring network fault determining unit is configured to control the delay timer to start when a ring network fault is detected in a normal working state, and perform loop network fault detection again when receiving the notification of the delay timer timeout.
  • the protection switching unit is controlled to perform a protection switching operation from a normal working state to a ring fault state;
  • the delay timer is configured to start according to the control of the ring network fault determining unit, and notify the ring network fault determining unit when timeout occurs;
  • the protection switching unit is configured to perform a protection switching operation of switching from a normal working state to a ring fault state according to the control of the ring network fault determining unit.
  • a device for implementing protection switching in a ring-shaped Ethernet comprising: a recovery waiting timer, a ring network failure determining unit, and a protection switching unit;
  • the ring network failure determining unit is configured to control the recovery waiting timer to start when detecting that the ring network fault has been eliminated in the ring fault state, and continue to detect the link fault and control the recovery when the link fault is detected. Waiting for the timer to restart;
  • the recovery waiting timer is configured to start according to the control of the ring network failure determining unit, and notify the protection switching unit when timeout occurs;
  • the protection switching unit is configured to perform an operation for restoring to a normal working state according to the notification of the recovery waiting timer.
  • the preset recovery wait timer is started, and after the recovery wait timer expires, the operation for restoring to the normal working state is performed. In this way, by setting the recovery wait timer, it is ensured that the protection switching operation in the ring network is not frequently performed due to link instability or intermittent defects in the link, thereby avoiding unnecessary protection switching operations.
  • FIG. 1 is a schematic diagram of a conventional ring Ethernet structure
  • FIG. 2 is a schematic diagram of a conventional ring Ethernet protection switching
  • FIG. 3 is a flow chart of a preferred embodiment of the method of the present invention.
  • FIG. 5 is a schematic structural diagram of a device according to an embodiment of the present invention.
  • Figure 6 is a schematic view showing the structure of another embodiment of the device of the present invention.
  • Figure 7 is a schematic view showing the structure of a device according to a preferred embodiment of the present invention. Mode for carrying out the invention
  • a preset delay timer is started, the delay timer expires, and the ring network fault is detected again.
  • the preset recovery waiting timer is started; after the recovery waiting timer expires, the execution is resumed to the normal working state. operating.
  • FIG. 3 is a flow chart of a preferred embodiment of the method of the present invention. As shown in Figure 3, the following steps are included:
  • Step 310 When in a normal working state, the master node applies the prior art to detect a ring network fault in the ring network; when detecting the ring network fault, the process proceeds to step 320, and when no ring network fault is detected, the process returns to step 310.
  • the ring network fault is a link fault and/or a node fault; specifically, the master node can detect the ring network fault through a link state alarm mechanism or a polling mechanism.
  • the link state alarm mechanism the transit node in the ring network can detect the ring network fault and send an alarm message to the master node by using the prior art; when receiving the alarm message from the transport node, the master node determines that the ring is detected. Network failure.
  • the master node continuously sends polling messages in its ring network by its primary port.
  • the master node can receive the rounds sent by its own master port through its own secondary port.
  • the master node cannot receive the polling message when the set failure period timer expires. In this case, the master node determines that the ring network fault is detected.
  • Step 320 The master node starts a preset delay timer.
  • Step 330 The master node determines whether the delay timer expires. If it times out, it proceeds to step 340; otherwise, returns to step 330.
  • Step 340 The master node detects a ring network fault in the ring network and determines whether a ring network fault is detected. If the ring network fault is detected, the process proceeds to step 350, and when no ring network fault is detected, the process returns to step 310.
  • Step 350 The primary node performs protection from the normal working state to the ring fault state. Change operation.
  • the protection switching operation in this step includes: the primary node refreshes its own forwarding table, and opens its own secondary port for the user data packet to allow the user data packet to pass; and simultaneously sends a refresh to the transmission node in the ring network.
  • the control message is advertised to notify the transmitting node to refresh the forwarding table.
  • the master node usually also continuously sends polling messages in the ring network by its primary port.
  • the operation time setting required for the lower layer protection switching is to ensure the protection of the lower layer network structure as much as possible.
  • the delay timer expires after the switching operation result. In this way, if the protection switching operation of the lower layer network structure is successfully completed, and the ring network failure is not detected again, there is no need to perform the protection switching operation of the current layer network structure; if the protection switching operation of the lower layer network structure fails to be successfully completed, Or the ring network fault is detected currently, and the protection switching operation of the current layer network structure is required.
  • the lower layer network structure obtains the time for performing the protection switching operation, so that the upper layer network structure does not perform unnecessary protection switching operations due to the fault that the lower layer network structure can solve, thereby making the current ring Unnecessary protection switching operations performed in the network are effectively avoided.
  • the nodes in the ring network can perform the operations shown in FIG.
  • the flow in Figure 4 is not necessarily related to the flow in Figure 3. In practical applications, the flow in Figure 3 can be performed separately, or the flow in Figure 4 can be performed separately.
  • FIG. 4 is a flow chart of another preferred embodiment of the method of the present invention. As shown in FIG. 4, the following steps are included:
  • Step 410 The master node applies the existing technology to detect whether the ring network fault in the ring network has been eliminated. When it is determined that the ring network fault has been eliminated, the process proceeds to step 420, and when it is determined that the ring network fault has not been eliminated, the process returns to step 410.
  • the master node may detect the ring network fault by using a link state alarm mechanism or a polling mechanism, and determine that the ring network fault has not been eliminated when the ring network fault is detected; and determine that the ring network fault has been detected when the ring network fault is not detected. eliminate.
  • Step 420 The master node starts a preset recovery wait timer.
  • Step 430 The primary node applies the prior art to detect the ring network fault in the ring network; when no ring network fault is detected, the process proceeds to step 440, and when the ring network fault is detected, the process returns to step 420.
  • Step 440 The master node determines whether the recovery wait timer expires. If it times out, it proceeds to step 450; otherwise, returns to step 430.
  • Step 450 The master node performs an operation for restoring to a normal working state.
  • the operations performed by the master node include: refreshing the forwarding table of the user and re-blocking the secondary port of the user data packet to prohibit the user data packet from passing; sending a refresh notification control message to the transit node in the ring network, The forwarding node is notified to refresh the forwarding table; in addition, the primary node usually also continuously sends polling messages in the ring network by its primary port.
  • the master node After this, the master node enters the normal working state.
  • the timing of the recovery wait timer may be set according to the actual application scenario, such as: according to the length of time required for link recovery to be stable and/or the possible duration of the link intermittent defect, to ensure that the link is stable or in the link. When the intermittent defect has not existed, the recovery wait timer expires.
  • FIG. 5 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
  • the device includes: a ring network failure determining unit 501, a delay timer 502, and a protection switching unit 503.
  • the ring network fault determining unit 501 is configured to detect a ring network fault when the normal working state is detected.
  • the delay timer 502 is started; and when the notification of the delay timer 502 is received, the ring network fault detection is performed again, and when the ring network fault is detected, the protection protection switching unit 503 performs the protection switching from the normal working state to the ring fault state. operating;
  • the delay timer 502 is configured to be started according to the control of the ring fault determining unit 501, and notify the ring fault determining unit 501 when timeout occurs;
  • the protection switching unit 503 is configured to perform a protection switching operation from the normal working state to the ring failure state according to the control of the ring network failure determining unit 501.
  • Figure 6 is a schematic view showing the structure of another embodiment of the apparatus of the present invention.
  • the device includes: a ring network failure decision unit 601, a recovery wait timer 602, and a protection switching unit 603;
  • the ring network fault determining unit 601 is configured to start the control recovery wait timer 602 when the ring network fault is detected in the ring fault state, and continue to detect the link fault and control the recovery wait timing when the link fault is detected. 602 restarts;
  • the recovery wait timer 602 is configured to start according to the control of the ring failure decision unit 601, and notify the protection switching unit 603 when the timeout occurs;
  • the protection switching unit 603 is configured to perform an operation for restoring to a normal working state according to the notification of the recovery waiting timer 602.
  • FIG. 7 is a schematic view showing the structure of a device according to a preferred embodiment of the present invention.
  • the ring network failure determining unit 710, the timing unit 720, and the protection switching unit 730 are respectively two or two.
  • a delay timer 721 and a resume wait timer 722 are provided in the timing unit 720.
  • the ring network fault determining unit 710 is connected to the delay timer 721 and the protection switching unit 730, respectively
  • the recovery waiting timer 722 is connected to the ring network fault determining unit 710 and the protection switching unit 730, respectively.
  • the ring network fault determining unit 710 when a ring network fault is detected in a normal working state, the ring network fault determining unit 710 starts the delay timer 721 by using a transmission level signal or the like; the delay timer 721 sends a level signal when the timeout expires.
  • the ring fault determining unit 710 is configured to perform the ring network fault detection again, and notify the protection switching unit 730 by sending a signal or the like when the ring network fault is detected, and the protection switching unit 730 performs normal operation. The protection switching operation of the state switching to the ring fault state.
  • the ring network failure decision unit 710 may continue to detect the ring network fault later, and restart the delay by sending a level signal or the like when detecting the ring network fault. Timer 721.
  • the ring network failure decision unit 710 When it is detected that the ring network failure has been eliminated in the ring failure state, the ring network failure decision unit 710 starts the recovery wait timer 722 in a manner of transmitting a level signal or the like, and performs ring network failure detection when the recovery wait timer 722 has not timed out. If the ring network failure is detected, the recovery wait timer 722 is restarted; otherwise, it returns to the state where the ring network failure detection is performed when the recovery wait timer 722 has not timed out.
  • the recovery wait timer 722 notifies the protection switching unit 730 by a transmission signal or the like at the time of timeout, and the protection switching unit 730 performs an operation for returning to the normal operation state.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

La présente invention concerne un procédé de réalisation de commutation de protection dans l'Ethernet en anneau comprenant les étapes suivantes: lors de la détection de la défaillance de l'Ethernet en anneau, le lancement d'une minuterie de retard qui a été préétablie ; lors de la détection de l'expiration de la minuterie de retard et de la défaillance de l'Ethernet annulaire pour la seconde fois, la commutation de l'état normal vers l'état de défaillance de l'Ethernet en anneau. Lorsque la défaillance de l'Ethernet en anneau a été éliminée, le lancement de la minuterie d'attente de rétablissement. Lors de l'expiration de la minuterie de rétablissement, la réalisation du rétablissement de l'état normal. L'invention concerne également un appareil pour effectuer la commutation de protection dans l'Ethernet en anneau.
PCT/CN2007/070512 2006-09-07 2007-08-17 Procédé et appareil de réalisation de commutation de protection dans l'ethernet en anneau WO2008031347A1 (fr)

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CNA2006101268605A CN101141364A (zh) 2006-09-07 2006-09-07 在环状以太网中实现保护倒换的方法和装置
CN200610126860.5 2006-09-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2477359B1 (fr) * 2009-09-07 2019-09-04 ZTE Corporation Procédé de protection d'un anneau de commutateurs ethernet et noeud de transit
CN113645312A (zh) * 2021-08-25 2021-11-12 烽火通信科技股份有限公司 一种基于erps协议的子环网链路保护方法与装置
CN115189986A (zh) * 2022-05-31 2022-10-14 武汉迈威通信股份有限公司 一种环网网络冗余备份方法及系统

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101662329B (zh) * 2008-08-29 2013-08-28 华为技术有限公司 倒换方法、网络节点和网络系统
CN101877646B (zh) * 2009-04-28 2013-03-20 华为技术有限公司 一种保护倒换方法和节点设备
CN101640941B (zh) 2009-08-06 2012-03-21 华为技术有限公司 连接资源释放处理方法和装置
CN101998186A (zh) * 2009-08-13 2011-03-30 中兴通讯股份有限公司 网络保护方法及装置
CN102035710B (zh) * 2009-09-24 2014-04-09 中兴通讯股份有限公司 一种阻塞端口信息更新的方法及系统
CN101997723A (zh) * 2010-11-18 2011-03-30 中兴通讯股份有限公司 一种业务切换方法及装置
CN102281168A (zh) * 2011-05-10 2011-12-14 中兴通讯股份有限公司 基于oam告警检测的链路故障处理方法及装置
CN102355408A (zh) * 2011-08-16 2012-02-15 杭州华三通信技术有限公司 一种通信设备的链路状态变更控制方法和装置
CN103684648B (zh) * 2012-09-21 2018-02-16 中兴通讯股份有限公司 一种环网节点时钟有效性判定方法及装置
CN104426700B (zh) * 2013-09-06 2018-05-18 华为技术有限公司 网元和环网保护的方法
EP3139527B1 (fr) * 2014-05-08 2018-08-15 Huawei Technologies Co., Ltd. Procédé de commutation de protection, noeud et dispositif de commande
CN106357832B (zh) * 2016-08-24 2019-10-18 浙江宇视科技有限公司 环网地址表项更新机制方法及装置
CN107800601B (zh) * 2016-09-06 2021-10-29 中兴通讯股份有限公司 环网倒换的保护方法、装置及系统
CN108965060B (zh) * 2018-07-27 2021-01-26 新华三技术有限公司合肥分公司 保护倒换方法及装置
CN111918316B (zh) * 2019-05-10 2022-05-03 大唐移动通信设备有限公司 基站维护方法和基站维护装置
CN115550106A (zh) * 2021-06-30 2022-12-30 中兴通讯股份有限公司 环网节点的控制方法、网络设备及存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6018576A (en) * 1996-12-31 2000-01-25 Mci Communications Corporation Method and apparatus for automated node-based normalization after network restoration
JP2000307605A (ja) * 1999-04-26 2000-11-02 Nec Corp ネットワーク管理システムおよびネットワーク管理方法
CN1499780A (zh) * 2002-10-31 2004-05-26 ���ֿ˰뵼��V.N.���޹�˾ 具有高可行性的以太网背板结构
CN1527547A (zh) * 2002-12-20 2004-09-08 ���ֿ˰뵼��V.N.���޹�˾ 用于在高可行性以太网背板上进行链路故障检测的装置
CN1791049A (zh) * 2005-12-16 2006-06-21 杭州华为三康技术有限公司 环网及其保护方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6018576A (en) * 1996-12-31 2000-01-25 Mci Communications Corporation Method and apparatus for automated node-based normalization after network restoration
JP2000307605A (ja) * 1999-04-26 2000-11-02 Nec Corp ネットワーク管理システムおよびネットワーク管理方法
CN1499780A (zh) * 2002-10-31 2004-05-26 ���ֿ˰뵼��V.N.���޹�˾ 具有高可行性的以太网背板结构
CN1527547A (zh) * 2002-12-20 2004-09-08 ���ֿ˰뵼��V.N.���޹�˾ 用于在高可行性以太网背板上进行链路故障检测的装置
CN1791049A (zh) * 2005-12-16 2006-06-21 杭州华为三康技术有限公司 环网及其保护方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2477359B1 (fr) * 2009-09-07 2019-09-04 ZTE Corporation Procédé de protection d'un anneau de commutateurs ethernet et noeud de transit
CN113645312A (zh) * 2021-08-25 2021-11-12 烽火通信科技股份有限公司 一种基于erps协议的子环网链路保护方法与装置
CN113645312B (zh) * 2021-08-25 2023-07-18 烽火通信科技股份有限公司 一种基于erps协议的子环网链路保护方法与装置
CN115189986A (zh) * 2022-05-31 2022-10-14 武汉迈威通信股份有限公司 一种环网网络冗余备份方法及系统
CN115189986B (zh) * 2022-05-31 2024-02-27 武汉迈威通信股份有限公司 一种环网网络冗余备份方法及系统

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