WO2012016458A1 - Procédé et appareil de transmission de données dans un réseau privé virtuel de couche 2 - Google Patents

Procédé et appareil de transmission de données dans un réseau privé virtuel de couche 2 Download PDF

Info

Publication number
WO2012016458A1
WO2012016458A1 PCT/CN2011/073655 CN2011073655W WO2012016458A1 WO 2012016458 A1 WO2012016458 A1 WO 2012016458A1 CN 2011073655 W CN2011073655 W CN 2011073655W WO 2012016458 A1 WO2012016458 A1 WO 2012016458A1
Authority
WO
WIPO (PCT)
Prior art keywords
data transmission
node
virtual link
link
switching
Prior art date
Application number
PCT/CN2011/073655
Other languages
English (en)
Chinese (zh)
Inventor
陈志华
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2012016458A1 publication Critical patent/WO2012016458A1/fr

Links

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]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • 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
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/0272—Virtual private networks

Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a data transmission method and apparatus for a Layer 2 virtual private network. Background technique
  • PW Redundancy is one of the techniques to improve the reliability of L2VPN networks.
  • the fault of the L2 VPN network can be detected through the Bidirectional Forwarding Detection (BFD) mechanism, and then the fault notification and fast traffic switching can be performed.
  • BFD Bidirectional Forwarding Detection
  • FIG. 1 is a schematic diagram of a data transmission method of an existing L2VPN network.
  • the Provider Edge hereinafter referred to as PE 1 establishes L2VPN for PE2 and PE3, where PE1- P1-PE2 is the primary PW, and PE1-P2-PE3 is the standby PW.
  • the BFD control packet transmitted through the PW is transmitted on the primary PW link.
  • the BFD control packet is used to detect the status of the primary PW between PE1 and PE2.
  • PE1 When PE1 does not receive the BFD control packet sent by PE2 within the preset detection interval, it detects that the primary PW link is faulty, and then PE1 performs traffic switching, and the primary PW switches to the standby PW, thereby passing PW redundancy.
  • the protection of the L2VPN network is realized.
  • PW redundancy is an end-to-end protection technology.
  • the BFD detection interval needs to be configured with a larger value. Therefore, the BFD fault detection and traffic switching speed is low, and the link occurs. The business interruption time in the event of a failure is long. Summary of the invention
  • the embodiments of the present invention provide a data transmission method and device for a Layer 2 virtual private network, so as to improve the speed of fault detection and traffic switching, and reduce the service interruption time when a link fails.
  • the embodiment of the present invention provides a data transmission method for a Layer 2 virtual private network, which is applied to a network including a primary virtual link and a standby virtual link carried by a traffic engineering, where the primary virtual link passes through an upstream node. And a downstream node, where, when the user equipment sends data to the primary virtual link, the data first arrives at the upstream node and then reaches the downstream node, and the method includes: the upstream node detects the upstream node Determining, by the connection state of the communication link to be protected, with the downstream node, determining whether the communication link to be protected is faulty;
  • the upstream node If the communication link to be protected is faulty, the upstream node performs traffic engineering fast reroute switching, and switches the data transmission to a pre-established alternate label switching channel for protecting the to-be-protected communication link;
  • the upstream node triggers a virtual link switch, and the data transmission is switched from the primary virtual link to the standby virtual link for protecting the primary virtual link.
  • the embodiment of the invention further provides a data transmission device for a layer 2 virtual private network, which includes:
  • a detecting module configured to detect a connection state of the to-be-protected communication link between the data transmission device and the downstream node that is passed by the main virtual link that is carried by the traffic engineering, and determine whether the to-be-protected communication link is faulty, where When the user equipment sends data to the primary virtual link, the data first arrives at the data transmission device node, and then reaches the downstream node;
  • a switching module configured to: after the detecting module determines that the communication link to be protected is faulty, Performing traffic engineering fast rerouting switching, and switching data transmission to a pre-established alternate label switching channel for protecting the to-be-protected communication link;
  • a triggering module configured to trigger a virtual link switch after the switching module performs the traffic engineering fast reroute switching, and switch the data transmission from the primary virtual link to the standby virtual link for protecting the primary virtual link .
  • the data transmission method and apparatus for the Layer 2 virtual private network in the embodiment of the present invention after the upstream node detects that the communication link to be protected between the upstream node and the downstream node fails, performs traffic engineering fast rerouting. Switching, switching the data transmission to the pre-established standby label switching channel, and then triggering the virtual link switching, so that the head node performs the smooth switching of the virtual link; because when the link fails, the traffic engineering fast re-routing is performed first. Local protection, and then virtual link redundancy and smooth switching, thereby improving the speed of fault detection and traffic switching, and reducing the service interruption time when the link fails.
  • 1 is a schematic diagram of a data transmission method of an existing L2 VPN network
  • Embodiment 2 is a flow chart of Embodiment 1 of a data transmission method for a Layer 2 virtual private network according to the present invention
  • Embodiment 3 is a flow chart of Embodiment 2 of a data transmission method for a Layer 2 virtual private network according to the present invention
  • Embodiment 2 is a schematic diagram of Embodiment 2 of a data transmission method for a Layer 2 virtual private network according to the present invention
  • FIG. 5 is a flowchart of Embodiment 3 of a data transmission method for a Layer 2 virtual private network according to the present invention.
  • FIG. 6 is a schematic diagram of Embodiment 3 of a data transmission method for a Layer 2 virtual private network according to the present invention.
  • Figure ⁇ is a schematic diagram of Embodiment 1 of a data transmission apparatus for a Layer 2 virtual private network according to the present invention
  • FIG. 8 is a schematic diagram of Embodiment 2 of a data transmission apparatus for a Layer 2 virtual private network according to the present invention. detailed description
  • Embodiment 2 is a flowchart of Embodiment 1 of a data transmission method for a Layer 2 virtual private network according to the present invention.
  • the embodiment is applied to a primary virtual link (Pseudo Wire, PW) and a standby PW that are carried by a traffic engineering.
  • PW Primary virtual link
  • L2VPN Layer 2 Virtual Private Network
  • the primary PW passes through one upstream node and one downstream node.
  • the data first arrives at the upstream node and then reaches the downstream node.
  • the method includes:
  • Step 201 The upstream node detects between the upstream node and the downstream node that passes through a primary virtual link (Pseudo Wire, hereinafter referred to as: PW) carried by Traffic Engineering (hereinafter referred to as TE)
  • PW Primary virtual link
  • TE Traffic Engineering
  • the upstream node and the downstream node are two adjacent routing devices, and a non-routing device may be connected between the two routing devices, and the non-routing device may be, for example, not provided. Routing device for routing functions.
  • the upstream node may be a head node on the primary PW, or may be an intermediate node on the primary PW; the downstream node may be an intermediate node on the primary PW, or may be the primary PW.
  • the tail node is a node that performs active/standby switching of the virtual link that performs data transmission, and the tail node is a node that is terminated by the PW, and the intermediate node is located at the head node and the The node between the tail nodes.
  • Step 202 If the communication link to be protected fails, the upstream node performs TE fast reroute (Fast Reroute, referred to as: FRR) handover, and switches data transmission to a pre-established one for protection.
  • FRR TE fast reroute
  • LSP Label Switched Path
  • the upstream node After the upstream node detects that the communication link to be protected is faulty, the upstream node performs TE FRR switching, and switches data transmission to a pre-established backup LSP to protect the to-be-protected communication link; The pre-established backup LSP is used to protect the to-be-protected communication link.
  • the detecting mechanism of the connection of the to-be-protected communication link by the upstream node may be physical sensing or BFD sensing. Since the communication link connection between the upstream node and the downstream node is relatively simple, detecting the connection condition of the communication link is faster, so that when a link failure occurs, the connection can be quickly detected, and Timely TE FRR switching makes the service interruption time short.
  • Step 203 The upstream node triggers a PW handover, and the data transmission is switched from the primary PW to the standby PW for protecting the primary PW.
  • the L2VPN includes the primary PW and the standby PW, and the standby PW is configured to protect the primary PW.
  • the head node may be an upstream border router.
  • the upstream node may be an intermediate node on the primary PW or a head node on the primary PW.
  • the upstream node is a different type of node, the corresponding manner of triggering the PW switching is different.
  • the upstream node when the upstream node is an intermediate node that the primary PW passes, the upstream node sends an indication message for triggering a PW handover to the head node that the primary PW passes after performing the TE FRR handover. And causing the head node to perform PW smooth handover according to the indication message, and switch data transmission from the primary PW to the standby PW.
  • the main PW may pass through multiple intermediate nodes, and the embodiment of the present invention may be applied to any intermediate node.
  • the TE may be performed first.
  • the FRR switches, and then sends the indication message for handover to the head node, so that the head node performs PW switching of data transmission.
  • the upstream node when the upstream node is the head node through which the primary PW passes, the upstream node performs PW smooth handover after performing the TE FRR handover, and switches data transmission from the primary PW to the standby PW.
  • the upstream node after detecting that the communication link to be protected between the upstream node and the downstream node fails, the upstream node performs the TE FRR handover to switch the data transmission to the pre-established backup LSP. Then, the PW switch of the data transmission is triggered, so that the head node performs the smooth switching of the PW, and the data traffic is switched from the primary PW to the standby PW; because when the link fails, the TE FRR is locally used first. Protection, and then PW smooth switching of data transmission, thereby improving the speed of fault detection and traffic switching, and reducing the service interruption time when the link fails.
  • the data transmission method for the L2VPN provided by the embodiment of the present invention can be applied to the Asymmetric Access Network of the Customer Edge (hereinafter referred to as: CE), or can be applied to the CE symmetric access network.
  • CE Asymmetric Access Network of the Customer Edge
  • the application of the embodiment of the present invention in the two networkings is described by using specific embodiments.
  • FIG. 3 is a flowchart of Embodiment 2 of a data transmission method for a Layer 2 virtual private network according to the present invention
  • FIG. 4 is a schematic diagram of Embodiment 2 of a data transmission method for a Layer 2 virtual private network according to the present invention. This embodiment is applied to a CE asymmetric access networking, and based on Embodiment 1 of the method, as shown in FIG. 3 As shown in FIG. 4, the method includes:
  • Step 301 Establish a standby LSP between the upstream node P1 and the downstream node PE2.
  • PE1 is a head node on the PW
  • the P1 is an intermediate node on the primary PW
  • the PE2 is a tail node on the primary PW
  • P2 is an intermediate node on the standby PW
  • PE3 is a tail node located on the standby PW.
  • the P1 may be equivalent to the upstream node in the first embodiment of the method.
  • a bypass tunnel is established between the P1 and the PE2 to protect the communication link to be protected between the P1 and the PE2.
  • the PE1 establishes an L2VPN to the PE2 and the PE3, where the PW of the PE1 to the PE2 is the primary PW, and the PE1 is to the The PW of PE3 is the standby PW.
  • the PW is configured to carry the LSP path of the TE primary tunnel to the PE1-P1-PE2 through the TE bearer.
  • the LSP path of the bypass tunnel is P1-P2-PE2, that is, the standby LSP path.
  • the P1-P2-PE2 is used to protect the to-be-protected links P1-PE2 on the TE primary tunnel.
  • P2 on the standby PW may be used, or a node on any other link may be used instead of P2.
  • Step 302 Detect a connection state of a communication link between the P1 and the PE2 by using a physical detection or a BFD mechanism.
  • connection state of the communication link between the P1 and the PE2 is detected by physical sensing or BFD sensing.
  • Step 303 After the communication link between the P1 and the PE2 fails, the P1 performs TE FRR switching, and switches data transmission to the Bypass tunnel.
  • the P1 local recovery node, PLR
  • the P1 performs the TE FRR handover, and switches the traffic to the Bypass tunnel, that is, the traffic is switched to Pre-configured the alternate LSP path (P1-P2-PE2) to protect The primary tunnel.
  • Step 304 After the P1 performs the TE FRR switching, the P1 sends an indication message for triggering a PW handover that carries a handover identifier to the head node PE1 that passes through the primary PW, so that the head node according to the indication The message switches the data transmission from the primary PW to the standby PW.
  • the P1 After the TE FRR handover is performed by the P1, the P1 sends a PathError message carrying the handover identifier to the PE1 located upstream.
  • Step 305 After receiving the indication message (PathError message), the PE1 performs a PW smooth handover, and switches the data transmission from the primary PW to the standby device for protecting the primary PW. After the PathError message is described, the PW smooth handover is performed, and data transmission is switched from the primary PW to the alternate path PE1-P2-PE3.
  • step 301 - step 305 the P1 is equivalent to the upstream node in the first embodiment of the method, and PE1 is equivalent to the head node in the first embodiment, and PE2 is equivalent to the tail in the first embodiment of the method. node.
  • the PE1 in this embodiment may also be the same as the upstream node in the first embodiment.
  • the embodiment of the present invention may include the following steps:
  • bypass tunnel is established between PE1 and P1 to protect the TE primary tunnel.
  • the LSP path of the bypass tunnel is PE1-P2-P1.
  • the physical connection or the BFD mechanism is used to detect the connection state of the link between the PE1 and the P1. After the link between the PE1 and the P1 fails, the PE1 performs TE FRR switching. Switching data transmission to the Bypass tunnel (PE1-P2-P1);
  • the PE1 After the TE FRR switching, the PE1 switches the data transmission from the primary PW to the standby PW.
  • the PW switch is triggered, so that the PE1 performs smooth switching of the PW.
  • the TE FRR is used for local protection, and then the PW is smoothly switched. This improves the speed of fault detection and traffic switching, and reduces the service interruption time when the link fails.
  • FIG. 5 is a flowchart of Embodiment 3 of a data transmission method for a Layer 2 virtual private network according to the present invention.
  • FIG. 6 is a schematic diagram of Embodiment 3 of a data transmission method for a Layer 2 virtual private network according to the present disclosure.
  • the method includes:
  • Step 501 Establish a standby LSP between the upstream node P1 and the downstream node PE2.
  • PE1 is a head node on the PW
  • the P1 is an intermediate node on the primary PW
  • the PE2 is a tail node on the primary PW
  • P2 is an intermediate node on the standby PW.
  • the P1 may be equivalent to the upstream node in the first embodiment of the method.
  • a bypass tunnel is established between the P1 and the PE2 to protect the communication link to be protected between the P1 and the PE2.
  • the PE1 establishes an L2VPN to the PE2, and the PW passes the TE bearer.
  • the LSP path of the TE tunnel that carries the primary PW is configured as PE1-P1-PE2, and the PW is carried.
  • the LSP path of the TE tunnel is PE1-P2-PE2.
  • the bypass tunnel is established on the P1.
  • the LSP path of the bypass tunnel is P1-P2-PE2, that is, the backup LSP path is P1-P2-PE2.
  • P2 on the standby PW may be used, or a node on any other link may be used instead of P2 o.
  • Step 502 Detect a connection state of a communication link between the P1 and the PE2 by using a physical detection or a BFD mechanism.
  • connection state of the communication link between the P1 and the PE2 is detected by physical sensing or BFD sensing.
  • Step 503 After the communication link of the P1 to the PE2 fails, the P1 enters Line TE FRR switching, switching data transmission to the Bypass tunnel.
  • the P1 After the PI (PLR) senses that the link between the P1 and the PE2 is faulty, the P1 performs the TE FRR switchover, and switches the traffic to the Bypass tunnel, that is, the traffic is switched to the pre-configured station.
  • the alternate LSP path (P1-P2-PE2) is used to protect the tunnel.
  • Step 504 After the TE FRR switching is performed by the P1, the P1 sends an indication message for triggering a PW handover that carries a handover identifier to the head node PE1 that passes through the primary PW, so that the The indication message switches data transmission from the primary PW to the standby PW for protecting the primary PW.
  • the P1 After the TE FRR handover is performed by the P1, the P1 sends a PathError message carrying the handover identifier to the PE1 located upstream.
  • Step 505 After receiving the indication message (PathError message), the PE1 notifies the PW to perform a smooth handover, and switches the data transmission of the primary PW to the standby PW.
  • the PE1 After receiving the PathError message, the PE1 performs the PW smooth handover, and switches data transmission from the primary PW to the alternate path PE1-P2-PE2.
  • step 501 - step 505 the P1 is equivalent to the upstream node in the first embodiment of the method, PE1 is equivalent to the head node in the first embodiment, and PE2 is equivalent to the tail in the first embodiment of the method. node.
  • the PE1 in this embodiment may also be the same as the upstream node in the first embodiment of the method.
  • the embodiment of the present invention may be used.
  • the step ac in the third embodiment of the method is included, and details are not described herein again.
  • the TE FRR switching is performed, and the data transmission is switched to the pre-established In the backup LSP, the PW switch is triggered, so that the PE1 performs the PW smooth handover.
  • the link fails the TE FRR is locally protected, and then the PW is smoothly switched, thereby improving the fault.
  • the speed of detection and traffic switching reduces the service interruption time when the link fails.
  • FIG. 7 is a schematic diagram of Embodiment 1 of a data transmission apparatus for a Layer 2 virtual private network according to the present invention.
  • the data transmission apparatus includes: a detection module 71, a switching module 73, and a triggering module 75.
  • the detecting module 71 is configured to detect a connection state of the to-be-protected communication link between the data transmission device and the downstream node that passes through the main virtual link carried by the traffic engineering, and determine whether the communication link to be protected is faulty.
  • the data arrives at the upstream node first, and then reaches the downstream node.
  • the switching module 73 is configured to: after the detecting module determines that the communication link to be protected is faulty, perform traffic engineering fast reroute switching, and switch data transmission to a pre-established spare label for protecting the to-be-protected communication link. Exchange channels.
  • the triggering module 75 is configured to trigger the virtual link switching after the switching module performs the traffic engineering fast reroute switching, and the data transmission is switched from the primary virtual link to the standby virtual link for protecting the primary virtual link. .
  • the data transmission device for the Layer 2 virtual private network may be an intermediate node through which the primary PW passes, or may be a head node through which the primary PW passes.
  • the working process and working principle of each module in this embodiment refer to the description in the foregoing method embodiments, and details are not described herein again.
  • the switching module performs the TE FRR switching first, and switches the data transmission. Going to the pre-established backup LSP, the triggering module triggers a PW switch, so that the head node performs a smooth switching of the PW, and transmits data from the primary PW. Switch to the standby PW.
  • the link fails, the TE FRR is locally protected, and then the PW is smoothly switched, thereby improving the speed of fault detection and traffic switching, and reducing the service interruption time when the link fails.
  • FIG. 8 is a schematic diagram of Embodiment 2 of a data transmission apparatus for a Layer 2 virtual private network according to the present invention.
  • the data transmission device further includes: a creation module 77, on the basis of the entire content of the first embodiment of the data transmission device.
  • the creating module 77 is configured to establish a standby label switching channel between the data transmission device and the downstream node.
  • the triggering module 75 includes: a first triggering unit 751 and/or a second triggering unit 753, based on the entire content of the first embodiment of the data transmission device.
  • the first triggering unit 751 is configured to send, when the data transmission device is not the head node that the primary virtual link passes, send a handover identifier to the head node that passes through the primary virtual link, and trigger the virtual
  • the indication message of the link switch is used to enable the head node to switch data transmission from the primary virtual link to the standby virtual link according to the indication message.
  • the first triggering unit 751 is specifically configured to send, when the data transmission device is not the head node that the primary virtual link passes, send a handover identifier to the head node that passes through the primary virtual link, and is used for triggering.
  • the path error message of the virtual link switch causes the head node to switch the data transmission from the primary virtual link to the standby virtual link according to the path error message.
  • the second triggering unit 753 is configured to: when the data transmission device is a head node that passes through the primary virtual link, transmit data from the primary virtual link after performing the traffic engineering fast reroute switching. Switch to the standby virtual link.
  • the head node is a node that performs active/standby switching of the virtual link for performing data transmission; the data transmission device and the downstream node may be adjacent routing devices, where The adjacent routing device means that there are no other routing devices between the two routing devices, but there may be non-routing devices, such as transmission devices that do not have routing functions.
  • the adjacent routing device means that there are no other routing devices between the two routing devices, but there may be non-routing devices, such as transmission devices that do not have routing functions.
  • the switching module first performs TE FRR switching, and switches the data transmission to the pre-established standby LSP. Then, the triggering module triggers the PW switching, so that the head node performs the smooth switching of the PW.
  • the TE FRR is used for local protection, and then the PW is smoothly switched, thereby improving the speed of fault detection and traffic switching. , reducing the service interruption time when the link fails.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Un procédé et un appareil de transmission de données dans un réseau privé virtuel de couche 2 (L2VPN) sont proposés dans les modes de réalisation de la présente invention. Le procédé est utilisé pour un réseau comprenant un pseudo Fil (PW) principal et un PW de sauvegarde, qui supportent l'ingénierie de trafic (TE), et le PW principal traverse un nœud amont et un nœud aval. Le procédé consiste en ce que : le nœud amont détecte l'état de connexion de la liaison de communication à protéger entre le nœud amont et le nœud aval, détermine si la liaison de communication à protéger présente un défaut ; si la liaison de communication à protéger présente un défaut, le nœud amont effectue la commutation de réacheminement rapide TE, et commute la transmission de données vers le trajet commuté d'étiquette de sauvegarde présélectionné utilisé pour protéger la liaison de communication à protéger ; et le nœud amont déclenche la commutation de PW. Avec les modes de réalisation de la présente invention, lorsque la liaison présente un défaut, premièrement la protection locale est mise en œuvre par la commutation de réacheminement rapide TE, deuxièmement la commutation douce du PW est effectuée, par conséquent, les vitesses de la détection de défaut et de la commutation de flux sont améliorées, et lorsque la liaison présente un défaut, le temps d'interruption de service est réduit.
PCT/CN2011/073655 2010-08-06 2011-05-04 Procédé et appareil de transmission de données dans un réseau privé virtuel de couche 2 WO2012016458A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010252109.6 2010-08-06
CN201010252109.6A CN102377607B (zh) 2010-08-06 2010-08-06 用于二层虚拟专用网络的数据传输方法和装置

Publications (1)

Publication Number Publication Date
WO2012016458A1 true WO2012016458A1 (fr) 2012-02-09

Family

ID=45558929

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/073655 WO2012016458A1 (fr) 2010-08-06 2011-05-04 Procédé et appareil de transmission de données dans un réseau privé virtuel de couche 2

Country Status (2)

Country Link
CN (1) CN102377607B (fr)
WO (1) WO2012016458A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2529680A (en) * 2014-08-28 2016-03-02 Metaswitch Networks Ltd Network connectivity
CN112787939A (zh) * 2020-12-30 2021-05-11 迈普通信技术股份有限公司 路径转发表更新方法、网络传输路径切换方法及装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2985952B1 (fr) * 2013-04-09 2018-09-26 Huawei Technologies Co., Ltd. Procédé et dispositif de protection de la fiabilité d'un service, et système de virtualisation de réseau
CN104135418B (zh) * 2013-05-03 2017-09-15 中国移动通信集团内蒙古有限公司 一种实现二层与三层虚拟专用网协调倒换的方法及装置
CN105306330A (zh) * 2014-06-24 2016-02-03 中兴通讯股份有限公司 组网保护方法、装置及组网中的汇聚主用网元
CN107566266B (zh) * 2016-06-30 2019-09-27 中兴通讯股份有限公司 快速重路由的转发方法及装置、网络设备
CN110661702B (zh) * 2018-06-28 2022-09-13 中兴通讯股份有限公司 一种链路备份的方法、装置及计算机可读存储介质
CN111131035A (zh) * 2019-12-18 2020-05-08 新华三半导体技术有限公司 数据传输方法及装置
CN111478803B (zh) * 2020-03-31 2022-08-30 新华三技术有限公司 一种路径故障检测方法及装置
CN113472642B (zh) * 2021-06-10 2023-06-13 新华三信息安全技术有限公司 一种保护切换方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006102918A1 (fr) * 2005-03-31 2006-10-05 Telecom Italia S.P.A. Procede d'acces radio pour reseaux radiophoniques mobiles, reseau et progiciel correspondants
CN1984060A (zh) * 2006-05-26 2007-06-20 华为技术有限公司 终端通话过程中的媒体流替换方法及系统
CN101035019A (zh) * 2007-01-12 2007-09-12 华为技术有限公司 快速收敛端到端业务的方法和装置
CN101645810A (zh) * 2009-09-02 2010-02-10 杭州华三通信技术有限公司 Pw的检测方法和设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100536383C (zh) * 2005-06-24 2009-09-02 华为技术有限公司 Ip传输系统及其方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006102918A1 (fr) * 2005-03-31 2006-10-05 Telecom Italia S.P.A. Procede d'acces radio pour reseaux radiophoniques mobiles, reseau et progiciel correspondants
CN1984060A (zh) * 2006-05-26 2007-06-20 华为技术有限公司 终端通话过程中的媒体流替换方法及系统
CN101035019A (zh) * 2007-01-12 2007-09-12 华为技术有限公司 快速收敛端到端业务的方法和装置
CN101645810A (zh) * 2009-09-02 2010-02-10 杭州华三通信技术有限公司 Pw的检测方法和设备

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2529680A (en) * 2014-08-28 2016-03-02 Metaswitch Networks Ltd Network connectivity
US10225102B2 (en) 2014-08-28 2019-03-05 Metaswitch Networks Ltd Network connectivity
GB2529680B (en) * 2014-08-28 2021-03-03 Metaswitch Networks Ltd Network connectivity
CN112787939A (zh) * 2020-12-30 2021-05-11 迈普通信技术股份有限公司 路径转发表更新方法、网络传输路径切换方法及装置
CN112787939B (zh) * 2020-12-30 2022-11-08 迈普通信技术股份有限公司 路径转发表更新方法及装置

Also Published As

Publication number Publication date
CN102377607A (zh) 2012-03-14
CN102377607B (zh) 2014-08-06

Similar Documents

Publication Publication Date Title
WO2012016458A1 (fr) Procédé et appareil de transmission de données dans un réseau privé virtuel de couche 2
EP2360880B1 (fr) Réacheminement rapide optimisé dans des topologies en anneau MPLS-TP
JP5484590B2 (ja) 擬似ワイヤに基づいてサービストラヒックを処理するための方法、デバイスおよびシステム
ES2363410T3 (es) Método, dispositivo y sistema para la conmutación de tráfico en ingeniería de tráfico de conmutación multiprotocolo por etiqueta.
JP4899959B2 (ja) Ｖｐｎ装置
US8144601B2 (en) Fault detection method, communication system and label switching router
US20130272114A1 (en) Pseudo wire switching method and device
WO2012079375A1 (fr) Procédé et système de protection de liaison dans un réseau privé virtuel
WO2012028029A1 (fr) Procédé et système de commutation
WO2007016834A1 (fr) Procede rapide de convergence de services de point a point et dispositif associe cote fournisseur de services
WO2009105974A1 (fr) Procédé et appareil pour un déroutage rapide dans un réseau privé virtuel (vpn) de commutation multiprotocole par étiquette (mpls)
WO2011060667A1 (fr) Procédé et dispositif de protection de liaison dans un réseau privé virtuel local
WO2007036106A1 (fr) Procede de commutation de protection de pseudo-cable dans le reseau a commutation de paquets et dispositif associe
WO2012159489A1 (fr) Procédé de commutation, système et dispositif fournisseur de double anneau pour réseau à double anneau de pseudo-circuit
WO2008046358A1 (fr) Procédé et dispositif destinés à réaliser une pénétration d'un statut de liaison de réseau point à multipoint
CN102282805B (zh) 一种业务保护方法及接入设备
WO2012037820A1 (fr) Système de commutation multiprotocole par étiquette, dispositif de noeud et procédé pour établir un tunnel bidirectionnel
WO2006079292A1 (fr) Procede pour la creation d'un trajet pour l'etiquette retour dans un systeme de commutation d'etiquettes multiprotocole
WO2010020146A1 (fr) Procédé, dispositif et système de protection corrélative pour un canal d'ingénierie de flux
WO2012171378A1 (fr) Procédé et routeur pour prévenir une interruption de flux provoquée par basculement de vpls vers l3
WO2013040930A1 (fr) Procédé et dispositif de protection de nœud intermédiaire pour chemin à commutation d'étiquettes de diffusion groupé
Papán et al. Overview of IP fast reroute solutions
WO2013178098A1 (fr) Procédé et dispositif permettant d'envoyer des informations de défaillance inter-domaine
WO2012146097A1 (fr) Réseau vpls et procédé et dispositif de commutation d'anneau ethernet
WO2017152596A1 (fr) Procédé et dispositif pour protéger un nœud de tunnel principal p2mp

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11814041

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11814041

Country of ref document: EP

Kind code of ref document: A1