WO2012068996A1 - Procédé et dispositif de détection d'état de liaisons - Google Patents

Procédé et dispositif de détection d'état de liaisons Download PDF

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Publication number
WO2012068996A1
WO2012068996A1 PCT/CN2011/082759 CN2011082759W WO2012068996A1 WO 2012068996 A1 WO2012068996 A1 WO 2012068996A1 CN 2011082759 W CN2011082759 W CN 2011082759W WO 2012068996 A1 WO2012068996 A1 WO 2012068996A1
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WO
WIPO (PCT)
Prior art keywords
network
packet
link
terminal
information
Prior art date
Application number
PCT/CN2011/082759
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English (en)
Chinese (zh)
Inventor
朱佩蘅
陈晓萍
陈潇
王士鹏
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012068996A1 publication Critical patent/WO2012068996A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • 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
    • H04L41/12—Discovery or management of network topologies
    • 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
    • H04L45/02—Topology update or discovery
    • H04L45/03—Topology update or discovery by updating link state protocols

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a link state detection method and apparatus.
  • BACKGROUND OF THE INVENTION In a wireless communication system, the reliability of a transmission link is important, which is related to the quality of the entire wireless network.
  • BTS Base Transceiver Station
  • BSC Base Station Controller
  • the wireless network reduces the reliability of the transmission link.
  • IP Internet Protocol
  • the common methods for maintaining a complex IP network to make it work stably and reliably are as follows:
  • the present invention provides a link state detection method and apparatus to at least solve the problem of degradation of network transmission quality caused by failure to detect link disconnection in time in the related art.
  • a link state detection method including: acquiring network topology information of a network where a terminal is located, where the network topology information includes: a network node in the network and a path corresponding to the network node; Topology information generates packet routing information; BFD generated by the terminal (Bidirectional Forwarding detection (bidirectional forwarding detection) The detection packet is transmitted between the network nodes according to the packet routing information. The status of the link in the network is detected according to the transmission status of the BFD detection packet.
  • the link state detection method further includes: if detecting that one or more links in the network are faulty, sending the packet sent in the network The transmission is performed according to network topology information other than one or more links that have failed.
  • the step of transmitting a packet sent in the network according to network topology information other than one or more links that have failed includes: routing the information from the network other than one or more links that have failed. In the topology information, the path is selected to transmit the packets sent in the network.
  • the link state detection method further includes: after a predetermined time, the packet sent in the network stops according to the following.
  • the message routing information is transmitted, and the transmission path is selected through a dynamic routing protocol.
  • the step of transmitting the BFD detection packet generated by the terminal according to the packet routing information between the network nodes includes: setting the link covered by the BFD packet according to the network complexity and the load of the terminal; The link is transmitted.
  • the packet routing information includes strict source routing IP options.
  • the step of detecting the link state in the network according to the transmission condition of the BFD detection packet includes: if the terminal does not receive the response message after retransmitting the predetermined number of BFD detection messages, determining the chain of the message routing information indication The road has failed.
  • the step of generating message routing information according to the network topology information includes: generating message routing information according to one or more network nodes in the network that the terminal needs to monitor and a path corresponding to one or more network nodes.
  • a link state detecting apparatus including: an acquiring unit, configured to acquire network topology information of a network where the terminal is located, where the network topology information includes: a network node and a network node in the network Corresponding path; generating unit, configured to generate packet routing information according to network topology information; and transmitting unit configured to transmit BFD detection packets generated by the terminal according to packet routing information between network nodes; The unit is configured to detect the link status in the network according to the transmission condition of the BFD detection packet.
  • the detecting device further includes: a switching unit configured to: according to detecting a failure of one or more links in the network, the packets sent in the network according to a network topology other than one or more links that are faulty Information is transmitted.
  • the switching unit includes: a switching module configured to select, by using the routing information of the packet, a path to select a path from the network topology information other than the faulty one or more links to transmit the packet sent in the network.
  • the BFD (Bidirectional Forwarding Detection) detection packet is used for link detection, which solves the problem that the time required for link detection and the detection result are synchronized in the network for a long time, resulting in a transmission link.
  • FIG. 1 is a preferred flowchart of a link state detecting method according to an embodiment of the present invention
  • FIG. 2 is another preferred flowchart of a link state detecting method according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a link state detecting apparatus according to an embodiment of the present invention.
  • FIG. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
  • the communication may be implemented by a wireless connection or a wired connection or a combination of both, which is not limited by the present invention.
  • Embodiment 1 FIG.
  • FIG. 1 is a flowchart of a link state detection method according to an embodiment of the present invention, which includes the following steps: S102: Obtain network topology information of a network where a terminal is located, where network topology information includes: a path corresponding to the network node and the network node; S104. Generate packet routing information according to network topology information.
  • the BFD detection packet generated by the terminal is transmitted between the network nodes according to the packet routing information.
  • the BFD (Bidirectional Forwarding Detection) detection packet is used for link detection, which solves the problem that the time required for link detection and the detection result are synchronized in the network for a long time. After the transmission link is disconnected, the message transmission on the link will be suspended for a long time, which affects the quality of the entire wireless network, thereby shortening the time required for link state detection.
  • the link state detection method further includes: if detecting that one or more links in the network are faulty, sending the network The message is transmitted according to network topology information other than one or more links that have failed.
  • a link abnormality that is, one or more links fail, and there is a backup link other than one or more links that have failed
  • the link is temporarily Forcibly switching, transmitting packets sent in the network according to network topology information other than one or more links that have failed, that is, by changing the path of transmission, the transmission quality is effectively guaranteed.
  • the step of transmitting the packet sent in the network according to the network topology information other than the faulty one or more links comprises: routing the information from the one or more links that are faulty In the external network topology information, the path is selected to transmit the packets sent in the network.
  • the packet routing information is used to select the shortest path from the network topology information except one or more links that have failed to perform the transmission of the packet sent in the network.
  • the message is transmitted by selecting the shortest path, reducing transmission and detection time.
  • the link state detection method further includes: after the predetermined time, the report sent in the network The text stops transmitting according to the message routing information, and the transmission path is selected through the dynamic routing protocol.
  • the transmission path is selected by a dynamic routing protocol, which effectively ensures transmission quality.
  • the step of transmitting the bidirectional forwarding detection BFD detection packet generated by the terminal according to the packet routing information between the network nodes includes: setting a link covered by the BFD packet according to the network complexity and the load condition of the terminal; BFD detection packets are transmitted on the covered link.
  • the terminal can monitor the operational status of the required network nodes and their corresponding links.
  • the message routing information includes strict source station routing IP options.
  • the strict source station routing IP option specifies that the sending message is switched to the available link, so that when the used transmission link is disconnected, the message transmission is not interrupted, thereby increasing the wireless communication system transmission network.
  • the effect of reliability Preferably, the step of detecting a link state in the network according to the transmission condition of the BFD detection packet includes: if the terminal does not receive the response message after retransmitting the BFD detection packet for a predetermined number of times, determining the packet routing information The indicated link has failed. In the preferred embodiment, the link state can be effectively and timely determined by this mechanism.
  • the step of generating message routing information according to the network topology information comprises: generating message routing information according to one or more network nodes in the network that the terminal needs to monitor and a path corresponding to one or more network nodes.
  • the terminal can monitor the operational status of the required network nodes and their corresponding links.
  • the path corresponding to the network node described in the present invention refers to a link in the network.
  • the terminal sends a BFD detection packet to each network intermediate node according to the network topology acquired by the dynamic routing protocol, and specifies that the BFD detection packet is transmitted along the link to the network node through the strict source station routing IP option, according to the network.
  • the strict source station routing IP option specifies that the sent packet is forcibly switched to the available link.
  • Embodiment 3 The terminal uses a dynamic routing protocol to detect the topology of the network, and uses BFD and strict source route routing IP options to detect and switch network links.
  • the interval for sending BPDUs to check the link status is 10 milliseconds.
  • the interval of the Hello packets that are detected by the OSPF (Open Shortest Path First) is used to detect the interval of the Hello packets. It can be seen that BFD can detect link anomalies more quickly.
  • FIG. 2 is another flowchart of a method for fast link detection and handover based on BFD and dynamic routing according to an embodiment of the present invention, including the following steps:
  • the OSPF module of the terminal obtains the network topology in the domain where the terminal is located according to the OSPF protocol.
  • the topology information is saved according to the path of the network node and the connection from the terminal to each network node.
  • the terminal 1 leads to the path a of the router A, and leads to the router.
  • B has a path b, c, d;
  • the strict source routing IP option of the BFD detection packet is specified.
  • the strict source route IP option of the BFD detection packet of the terminal 1 along the path a to the router A is the interface address A.1 of the router A; the BFD detection report of the terminal 1 along the path b to the router B
  • the strict source route IP options of the text are the addresses A. l, B.1; the strict source route IP options of the BFD detection packets of the terminal 1 along the path c to the router B are the addresses A. l, C. l B.4;
  • the strict source station routing IP options of the BFD detection packet of the terminal 1 along the path d to the router B are the addresses A. l, D. l, B. 2;
  • a link is broken on the path currently being used.
  • the network cable between the router and the D is disconnected on the path d in Figure 3.
  • the BFD module on the terminal will detect the broken link first because the detection time is short, and the OSPF module
  • the information has not been updated yet, and the route switching is implemented by specifying the strict source route IP option for sending the message, so that the sent message will be sent according to the shortest path in the new network topology after the broken link is not included, for example
  • the packet will be sent from the terminal 1 to the terminal 2 through the recalculated path b, and the strict source route of the packet is sent.
  • the first two terms of the IP option will be A.
  • step S212 waiting for a long time, the time is determined by the network environment, configured by the user, determining that the entire network has synchronized the broken link information in step S210, sending the message to stop routing through the strict source station routing IP option, and dynamically selecting the path through OSPF ;
  • FIG. 4 is a schematic structural diagram of a link state detecting apparatus according to an embodiment of the present invention, which includes: an obtaining unit 402, configured to acquire network topology information of a network where a terminal is located, where the network topology information includes: a network node and a network node corresponding to the network; the generating unit 404, in communication with the obtaining unit 402, configured to generate message routing information according to the network topology information; the transmitting unit 406, in communication with the generating unit 404, configured to generate the terminal
  • the bidirectional forwarding detection BFD detection packet is transmitted between the network nodes according to the packet routing information.
  • the detecting unit 408 is configured to communicate with the transmission unit 406, and is configured to detect the link state in the network according to the transmission condition of the BFD detection packet.
  • the BFD (Bidirectional Forwarding Detection) detection packet is used for link detection, which solves the problem that the time required for link detection and the detection result are synchronized in the network for a long time. After the transmission link is disconnected, the message transmission on the link will be suspended for a long time, which affects the quality of the entire wireless network, thereby shortening the time required for link state detection.
  • the link state detecting apparatus further includes: a switching unit configured to: according to detecting that one or more links in the network are faulty, the packets sent in the network are in accordance with one or more chains that are faulty.
  • the network topology information outside the road is transmitted.
  • the link is temporarily Forcibly switching, transmitting packets sent in the network according to network topology information other than one or more links that have failed, that is, by changing the path of transmission, the transmission quality is effectively guaranteed.
  • the switching unit comprises: a switching module, configured to select, by using the routing information, the shortest path from the network topology information except one or more links that have failed to perform the transmission of the packet sent in the network.
  • the switching module selects the shortest path from the network topology information except one or more links that have failed to perform the transmission of the packet sent in the network by using the packet routing information.
  • the message is transmitted by selecting the shortest path, reducing transmission and detection time.
  • the transmission unit 406 stops the transmission of the information according to the packet routing information after a predetermined time.
  • the message is sent in, and the transmission path is selected through a dynamic routing protocol.
  • the transmission path is selected by a dynamic routing protocol, which effectively ensures transmission quality.
  • the transmitting unit 406 the step of transmitting the bidirectional forwarding detection BFD detection packet generated by the terminal according to the packet routing information between the network nodes, includes: setting the BFD packet coverage according to the network complexity and the load condition of the terminal. Link; BFD detection packets are transmitted on the covered link.
  • the terminal can monitor the operational status of the required network nodes and their corresponding links.
  • the message routing information includes strict source station routing IP options.
  • the strict source station routing IP option specifies that the sending message is switched to the available link, so that when the used transmission link is disconnected, the message transmission is not interrupted, thereby increasing the wireless communication system transmission network.
  • the detecting unit 408 detects the link state in the network according to the transmission condition of the BFD detection packet, and includes: if the terminal does not receive the response message after retransmitting the BFD detection packet for a predetermined number of times, determining that the report is reported The link indicated by the routing information is faulty.
  • the link state can be effectively and timely determined by this mechanism.
  • the generating unit 404 generates message routing information according to the network topology information, including: generating a message route according to one or more network nodes in the network that the terminal needs to monitor and a path corresponding to one or more network nodes. information.
  • the terminal can monitor the operational status of the required network nodes and their corresponding links. From the above description, it can be seen that the present invention achieves the following technical effects: It can quickly detect the link status of all nodes in the network, and quickly switch to other normal links when the network link in use is disconnected. Increase the reliability of the transmission network of the wireless communication system.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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

Abstract

La présente invention concerne un procédé et un dispositif destinés à détecter un état de liaisons, le procédé consistant à acquérir des informations de topologie de réseau sur le réseau où se trouve le terminal, les informations de topologie de réseau comprenant : les nœuds de réseau dans le réseau et les chemins correspondant aux nœuds de réseau ; générer des informations de routage de messages selon les informations de topologie de réseau ; transmettre entre les nœuds de réseau le message de détection BFD généré par le terminal selon les informations de routage de messages ; et détecter l'état des liaisons dans le réseau en fonction des conditions de transmission du message de détection BFD. La présente invention permet de résoudre le problème des technologies connexes selon lequel la qualité de transmission du réseau diminue lorsque la déconnexion d'une liaison n'est pas détectée rapidement, raccourcissant ainsi le temps nécessaire pour détecter l'état des liaisons et augmentant également la fiabilité d'un réseau de transmission d'un système de communication sans fil.
PCT/CN2011/082759 2010-11-24 2011-11-23 Procédé et dispositif de détection d'état de liaisons WO2012068996A1 (fr)

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CN201010559220.XA CN102480753B (zh) 2010-11-24 2010-11-24 链路状态检测方法和装置

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WO2014060034A1 (fr) * 2012-10-17 2014-04-24 Telefonaktiebolaget L M Ericsson (Publ) Procédé et appareil pour déterminer des informations de connexion d'une liaison
EP2813035A4 (fr) * 2012-06-27 2016-01-13 Google Inc Détection de panne réseau déterministe
CN113012412A (zh) * 2021-03-03 2021-06-22 福建碧霞环保科技有限公司 基于仪表和视频数据动态采集统计分析的智慧数据采集方法及系统
CN113133045A (zh) * 2021-04-16 2021-07-16 易斌 一种灯控器无线组网链路的可靠性预测方法
CN113938416A (zh) * 2021-10-26 2022-01-14 新华三信息安全技术有限公司 一种路径选择方法及装置
CN115150251A (zh) * 2022-05-27 2022-10-04 中国南方电网有限责任公司 电力专网调度通信链路的故障诊断方法、系统及管理平台
CN116248545A (zh) * 2022-12-28 2023-06-09 中国电信股份有限公司 网络传输链路的故障分析方法及装置
CN117395747A (zh) * 2023-12-13 2024-01-12 思翼科技（深圳）有限公司 一种无人机远程遥控组网方法及系统

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CN103259687B (zh) * 2013-06-04 2017-03-22 沈阳空管技术开发有限公司 民航空管数据接入平台
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CN105743711B (zh) * 2016-04-13 2019-10-18 华为技术有限公司 一种网络路径的故障检测方法、装置及网络设备
CN108809679B (zh) * 2017-05-03 2021-11-05 腾讯科技（深圳）有限公司 对网络节点的控制方法、装置及监控设备
CN108631857A (zh) * 2018-03-29 2018-10-09 西安空间无线电技术研究所 一种通信卫星转发器备份环的自动切换控制方法及系统
CN108809759A (zh) * 2018-05-29 2018-11-13 新华三技术有限公司 检测链路状态的方法、装置和路由器
CN112468353B (zh) * 2019-09-09 2023-11-21 华为数字技术（苏州）有限公司 一种网络可达性检测方法及装置
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CN112422428B (zh) * 2020-11-09 2022-05-17 迈普通信技术股份有限公司 链路状态获取方法、装置、电子设备及可读存储介质
CN112910742A (zh) * 2021-03-15 2021-06-04 杭州迪普科技股份有限公司 链路状态检测方法及装置

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EP2813035A4 (fr) * 2012-06-27 2016-01-13 Google Inc Détection de panne réseau déterministe
WO2014060034A1 (fr) * 2012-10-17 2014-04-24 Telefonaktiebolaget L M Ericsson (Publ) Procédé et appareil pour déterminer des informations de connexion d'une liaison
CN113012412A (zh) * 2021-03-03 2021-06-22 福建碧霞环保科技有限公司 基于仪表和视频数据动态采集统计分析的智慧数据采集方法及系统
CN113012412B (zh) * 2021-03-03 2022-10-18 福建鸿鹄环境发展有限公司 基于仪表和视频数据动态采集统计分析的智慧数据采集方法及系统
CN113133045A (zh) * 2021-04-16 2021-07-16 易斌 一种灯控器无线组网链路的可靠性预测方法
CN113938416A (zh) * 2021-10-26 2022-01-14 新华三信息安全技术有限公司 一种路径选择方法及装置
CN115150251A (zh) * 2022-05-27 2022-10-04 中国南方电网有限责任公司 电力专网调度通信链路的故障诊断方法、系统及管理平台
CN115150251B (zh) * 2022-05-27 2023-11-03 中国南方电网有限责任公司 电力专网调度通信链路的故障诊断方法、系统及管理平台
CN116248545A (zh) * 2022-12-28 2023-06-09 中国电信股份有限公司 网络传输链路的故障分析方法及装置
CN117395747A (zh) * 2023-12-13 2024-01-12 思翼科技（深圳）有限公司 一种无人机远程遥控组网方法及系统
CN117395747B (zh) * 2023-12-13 2024-03-15 思翼科技（深圳）有限公司 一种无人机远程遥控组网方法及系统

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