WO2007121633A1 - Procédé de réacheminement rapide en cas de partage de liaisons de transmission par de multiples ports - Google Patents

Procédé de réacheminement rapide en cas de partage de liaisons de transmission par de multiples ports Download PDF

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Publication number
WO2007121633A1
WO2007121633A1 PCT/CN2006/003524 CN2006003524W WO2007121633A1 WO 2007121633 A1 WO2007121633 A1 WO 2007121633A1 CN 2006003524 W CN2006003524 W CN 2006003524W WO 2007121633 A1 WO2007121633 A1 WO 2007121633A1
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WO
WIPO (PCT)
Prior art keywords
link
port
transmission
primary
interface
Prior art date
Application number
PCT/CN2006/003524
Other languages
English (en)
Chinese (zh)
Inventor
Ping'an Yang
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 WO2007121633A1 publication Critical patent/WO2007121633A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath
    • H04L45/245—Link aggregation, e.g. trunking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Definitions

  • the present invention relates to the field of network and communication technologies, and in particular, to a fast rerouting method when multiple ports share a transmission link. Background technique
  • BFD Bidirectional Forwarding Detection
  • FIG. 1 shows a prior art independent backup link fast reroute protection scheme.
  • R1 arrives at the destination network via R2 and arrives at the destination network from R1 through R3.
  • Select one of the links for example, the Rl-R2-destination network in the figure
  • Step 11 shows that the primary link has failed and the packet transmission is interrupted.
  • Step 12 shows fast switching using fast re-routing technology, and the standby link (R1-R3-destination network) enters the working state;
  • Step 13 shows that the primary link is faulty, and the active link is reselected for packet transmission.
  • the detection method in the above solution is simple, and can realize fast service switching and meet the real-time business requirements of the user; however, in the case of a long transmission path, the cost of renting multiple transmission links is too high, and does not meet the economic requirements.
  • FIG. 2 shows a networking scheme in the prior art using a shared transport ring network.
  • the terminal devices R1 and R2 are respectively connected to the transmission ring network through the transmission device.
  • the backup link that is, the link corresponding to Portl and Port2, still exists between the terminal device and the transmission device, but only one transmission is leased between the two transmission devices.
  • the ring network performs packet transmission. Thus, there are no independent two links between the terminal devices R1 and R2. Packets sent from any port of R1 are transmitted to the terminal device R2 through Port1 and Port2 through the transmission device B. .
  • the data transmission is performed by using the protection mechanism of the transmission ring network, so that only one transmission ring needs to be rented to realize the unimpeded transmission of the message, thereby saving the cost; however, to implement the solution, it is also necessary to solve the problem.
  • the object of the present invention is to provide a fast rerouting method when a plurality of ports share a transmission link, so as to implement fast reroute switching in the case of a link failure, to meet real-time service requirements of users, and to save operating costs of service providers.
  • An embodiment of the present invention provides a fast rerouting method, where multiple links are set between a terminal device and a transmission device, and the method includes:
  • the fast switching when the link between the terminal device and the transmission device fails is realized, thereby effectively improving the reliability of information transmission.
  • FIG. 1 is a schematic diagram of an implementation of an independent backup link fast rerouting in the prior art
  • FIG. 3 is a schematic diagram of an implementation principle of fast rerouting according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing an implementation principle of an embodiment of the present invention.
  • a backup link is set up between a transmission device and a terminal device, and the links are bundled into a bundle interface, and information such as a network address is configured on the bundle interface.
  • the bundled interface performs learning and delivery of related information such as routing.
  • the link layer of each backup member is avoided to use Point-to-Point Protocol (PPP).
  • PPP Point-to-Point Protocol
  • the transmitting terminal R1 selects Port1 as the primary link for packet transmission, and configures the BFD protocol to detect the link state between the terminal devices R1 and R2.
  • the fast rerouting technology is used to switch to the 01 2 link for packet transmission. During this period, the status of the bundled interface does not change, and the terminal device does not need to relearn the routing information, so the switching time can be less than 50 ms.
  • the Portl link communication capability is restored, and the transmission is switched to the Portl link.
  • the packet After the packet reaches the transmission device B through the transmission ring network, the packet is sent from the link corresponding to Port3 and Port4.
  • the message arrives at the receiving terminal R2, and R2 receives the message from the configured primary port Port3 by default;
  • the standby port Port4 is selected to receive the packet.
  • FIG. 4 is a detailed flowchart of the fast rerouting protection when the shared transmission link is implemented by the detection mechanism in the embodiment of the present invention.
  • the method in the embodiment may be implemented on the network shown in FIG. 3, and specifically includes the following steps:
  • Step 401 The packet sent by the sending end R1 reaches the binding interface.
  • Step 402 The bundle interface selects an active transmission port according to a preset primary port selection rule.
  • Step 403 Determine, according to the detection result information of the primary port, whether the link of the primary port is faulty. If no fault occurs, go to step 404. If the fault occurs, go to the step. 405;
  • Step 404 The primary port sends a packet.
  • Step 405 Reselect a port as the primary port
  • Step 406 it is determined whether the newly selected primary port link is faulty, if no fault occurs, step 404 is performed, if a fault occurs, step 407 is performed;
  • Step 407 it is determined whether all the bundled links have failed, if there is no link that has failed, step 405 is performed, if all port links fail, step 408 is performed;
  • Step 408 According to the previously configured policy, or discard the message being sent, or select any port to send the message;
  • Step 409 the successfully sent packet reaches the receiving end bundling interface through the transmission ring network;
  • Step 410 the bundling interface selects the main receiving port according to the preset primary port selection rule;
  • Step 411 it is determined whether the main receiving port link is faulty, if the fault occurs, step 413 is performed, if no fault occurs, step 412 is performed;
  • Step 412 The primary receiving port receives the packet.
  • Step 413 reselecting the primary receiving port
  • Step 414 it is determined whether the newly selected primary receiving port link is faulty, if a fault occurs, step 415 is performed, if no fault occurs, step 412 is performed;
  • Step 415 it is determined whether all the receiving port links are faulty, if all the port links fail, step 416 is performed, otherwise step 413 is performed;
  • Step 416 According to the previously configured policy, or discard the packet arriving at the receiving port or select any port to receive the packet.
  • multiple ports before the packet starts to be transmitted, multiple ports should be bundled at the sending end and the receiving end to form a binding interface, provide a logical binding interface to the upper layer protocol, and configure the IP address and routing protocol.
  • the state of the upper layer protocol changes when the port is switched.
  • certain rules should be formulated for the selection of the primary port to avoid confusion when the message is transmitted. This configuration can be performed manually, or can be implemented by using a certain algorithm, and will be set for the primary use.
  • the port information is configured on the corresponding bundle interface. On.
  • the detection mechanism configured between the terminal devices periodically detects the link periodically, and configures the fault information on the port corresponding to the link.
  • the detection mechanism can discard the packet or arbitrarily select a port transmission only if all the backup links are detected and all the backup links fail.
  • the main link After detecting that all the links are faulty, the main link is re-detected. Only when the secondary link of the primary link still fails, the packet is discarded or a port is selected to transmit packets.
  • the multiple ports of the bundling interface In order to avoid transmission confusion between multiple ports on the sending end or the receiving end, it is necessary to limit the multiple ports of the bundling interface to be determined by a certain protocol. Only one port of all ports can be used for packet transmission at any time, while other ports are used. Both are waiting or idle.
  • the link switch in order to prevent data loss, should be performed after the corresponding link operator completes.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé de réacheminement rapide utilisé lorsque de multiples ports partagent des liaisons de transmission, et qu'il existe de multiples liaisons entre la borne et le dispositif de transmission. Le procédé consiste à regrouper les multiples ports dans une interface de regroupement et à faire partager la même liaison de transmission au niveau de la borne, à sélectionner le port actif de l'interface de regroupement de la borne pour émettre et recevoir des paquets, et à détecter une défaillance sur les multiples liaisons. Lorsque le port actif et la liaison active présentent une défaillance, on sélectionne un port de secours et une liaison de secours pour émettre et recevoir les paquets. Le problème de protection de sécurité lorsqu'il n'y a qu'un réseau de transmission en boucle entre deux dispositifs de communication est ainsi résolu, satisfaisant ainsi la demande de service en temps réel de l'utilisateur.
PCT/CN2006/003524 2006-04-23 2006-12-21 Procédé de réacheminement rapide en cas de partage de liaisons de transmission par de multiples ports WO2007121633A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2006100604261A CN100561977C (zh) 2006-04-23 2006-04-23 一种多个端口共享传输链路时的快速重路由方法
CN200610060426.1 2006-04-23

Publications (1)

Publication Number Publication Date
WO2007121633A1 true WO2007121633A1 (fr) 2007-11-01

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Application Number Title Priority Date Filing Date
PCT/CN2006/003524 WO2007121633A1 (fr) 2006-04-23 2006-12-21 Procédé de réacheminement rapide en cas de partage de liaisons de transmission par de multiples ports

Country Status (2)

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CN (1) CN100561977C (fr)
WO (1) WO2007121633A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4310686A3 (fr) * 2018-09-28 2024-04-03 Panasonic Intellectual Property Management Co., Ltd. Dispositif de communication et procédé de communication

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CN101252459B (zh) * 2008-03-24 2010-12-08 中兴通讯股份有限公司 一种设置链路端口的协议状态的方法及其监控方法
CN101299722B (zh) * 2008-07-02 2014-10-29 杭州华三通信技术有限公司 一种改进的快速重路由方法和一种网络设备
CN101547082B (zh) * 2009-04-22 2012-06-27 华为技术有限公司 一种主备链路倒换方法及网络设备
CN101626345B (zh) * 2009-07-23 2013-03-20 中兴通讯股份有限公司 一种报文处理方法及家庭网关中的实时流协议应用层网关
CN102035597B (zh) * 2009-09-30 2014-12-31 华为技术有限公司 一种无源光网络的主备切换方法、装置和系统
CN101800889B (zh) * 2010-02-02 2013-07-10 浙江宇视科技有限公司 一种视频监控方法和设备
CN102185784A (zh) * 2011-05-26 2011-09-14 杭州华三通信技术有限公司 一种自动保护切换方法及其装置
CN102299830B (zh) * 2011-09-20 2014-02-05 杭州华三通信技术有限公司 拨号链路检测方法和设备
CN102882704B (zh) * 2012-09-03 2016-06-29 杭州华三通信技术有限公司 一种issu的软重启升级过程中的链路保护方法和设备
CN104796329B (zh) * 2014-01-16 2017-11-28 中国移动通信集团北京有限公司 一种链路自动切换方法及装置
CN106059791B (zh) * 2016-05-13 2020-04-14 华为技术有限公司 一种存储系统中业务的链路切换方法和存储设备
CN107241174B (zh) * 2017-06-28 2020-04-03 迈普通信技术股份有限公司 网络切换方法及网络设备
CN110875828B (zh) * 2018-08-31 2022-04-22 中兴通讯股份有限公司 一种传输业务的方法和装置
US11711294B2 (en) * 2021-05-03 2023-07-25 Mellanox Technologies, Ltd. Fast rerouting using egress-port loopback

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WO2004073251A1 (fr) * 2003-02-12 2004-08-26 Nortel Networks Limited Commutation de protection imbriquee dans un reseau de communication connecte maille
CN1547330A (zh) * 2003-12-01 2004-11-17 中兴通讯股份有限公司 一种多端口多链路的通讯网络备份控制方法及其装置
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WO2004073251A1 (fr) * 2003-02-12 2004-08-26 Nortel Networks Limited Commutation de protection imbriquee dans un reseau de communication connecte maille
CN1592156A (zh) * 2003-08-26 2005-03-09 三星电子株式会社 具有双链路结构的千兆比特以太网无源光网络
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CN1984039A (zh) 2007-06-20

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