WO2010020126A1 - Procédé, dispositif et système de transmission de données dans un réseau vpls - Google Patents

Procédé, dispositif et système de transmission de données dans un réseau vpls Download PDF

Info

Publication number
WO2010020126A1
WO2010020126A1 PCT/CN2009/071431 CN2009071431W WO2010020126A1 WO 2010020126 A1 WO2010020126 A1 WO 2010020126A1 CN 2009071431 W CN2009071431 W CN 2009071431W WO 2010020126 A1 WO2010020126 A1 WO 2010020126A1
Authority
WO
WIPO (PCT)
Prior art keywords
primary
standby
npe
data packet
vpls network
Prior art date
Application number
PCT/CN2009/071431
Other languages
English (en)
Chinese (zh)
Inventor
王新伟
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 WO2010020126A1 publication Critical patent/WO2010020126A1/fr

Links

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
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • 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
    • H04L45/04—Interdomain routing, e.g. hierarchical 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
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/68—Pseudowire emulation, e.g. IETF WG PWE3

Definitions

  • the embodiments of the present invention relate to the field of computer network technologies, and in particular, to a data transmission method, apparatus, and system in a VPLS network. Background technique
  • Virtual Private LAN Service (VPLS) network is a point-to-point, point-to-multipoint or multi-point-to-multipoint based multi-protocol label switching.
  • the VPLS network is mainly composed of a User-facing Provider Edge (UPE), a Network-oriented Carrier Provider Edge (NPE), and a User Border Network Device (Custom). Edge, hereinafter referred to as: CE) and other devices.
  • the UPE is a user aggregation device that directly connects to the CE and supports routing and MPLS encapsulation.
  • the NPE is a core device that connects the UPE and is located inside the VPLS network to provide transparent transmission of VPLS between the core networks of the VPLS network.
  • FIG. 1 it is a schematic diagram of a network structure for data packet transmission by a UPE dual-homed NPE in the prior art.
  • the solid line represents the data packet transmission path, and the dotted line represents the formed message loop.
  • UPE1 is dual-homed to two NPEs, one is the primary NPE (NPE1), and the other is the standby NPE (NPE2). In this case, the broadcast packet will form a packet loop on the dual-homed link.
  • NPE1 the primary NPE
  • NPE2 standby NPE
  • STP Segment Transfer Tree Protocol
  • NPE1 the primary NPE
  • NPE2 the standby NPE
  • MAC Medium Access Control
  • the UPE uses the MPLS operation, management, and maintenance (OAM) to detect the status of the Label Switched Path (LSP).
  • LSP Label Switched Path
  • the NPE detects the LSP fault and sends a Label Distribution Protocol (LDP) message to the other NPEs in the virtual switch instance (VSI) to notify the other NPEs to delete the related MAC addresses.
  • LDP Label Distribution Protocol
  • VSI virtual switch instance
  • the UPE can receive two broadcast traffic, one from the switched NPE and the other from the NPE before the handover. It is up to the UPE to decide to discard one of the broadcast traffic. After the fault is rectified, the UPE does not switch to the LSP before the fault occurs. Because the LSP fails to be detected, the NPE does not send LDP messages to other NPEs to delete the MAC address.
  • a loop is formed between the dual-homed UPE and the NPE, and an additional protocol such as the STP protocol is required to cut the loop, which increases the NPE.
  • an additional protocol such as the STP protocol is required to cut the loop, which increases the NPE.
  • QoS Quality of service of the VPLS network. Of Service
  • the embodiment of the present invention provides a data transmission method, device, and system in a VPLS network, so as to implement data packet transmission from the primary PW to the standby PW when the primary PW fails, thereby improving the QoS of the VPLS network.
  • an embodiment of the present invention provides a data transmission method in a virtual private local area network service VPLS network, where the active virtual link PW and the standby virtual link PW are deployed in the VPLS network, and the data transmission is performed.
  • Methods include:
  • the standby PW is prohibited from forwarding the data packet
  • an embodiment of the present invention further provides a data transmission apparatus in a VPLS network, including:
  • the fault detection module is configured to perform fault detection on the primary PW;
  • a switching module configured to: when the fault detection module detects that the primary PW is faulty, cancel the restriction on forwarding the data packet to the standby PW according to the fast rerouting policy, and transmit the data packet from the The primary PW switches to the standby PW, and the data packet transmission is performed by using the standby PW.
  • an embodiment of the present invention further provides a data transmission system in a VPLS network, including:
  • UPE used to prohibit the standby PW from being used when the primary PW performs data packet transmission. And performing the fault detection on the primary PW, and when the primary PW fails, canceling the restriction on forwarding the data packet to the standby PW according to the fast rerouting policy, The data packet is transferred from the primary PW to the standby PW, and the data packet is transmitted through the standby PW.
  • a first NPE connected to the UPE by the primary PW, configured to send a MAC Withdraw message to the NPE when the primary PW fails, and clear all MAC address tables associated with the primary PW. And indicating that the NPE in the VPLS network re-learns the MAC address, so that the re-learned MAC address entry points to the standby PW.
  • the embodiment of the present invention has the following advantages:
  • the embodiment of the present invention avoids the formation of a loop between the dual-homed UPE and the NPE through the fast re-routing strategy, thereby reducing the burden on the NPE.
  • the standby PW is forbidden to forward data packets before the primary PW fails.
  • fast link switching can be performed, thus improving the QoS of the VPLS network.
  • FIG. 1 is a schematic diagram of a network structure of a UPE dual-homing access NPE for data packet transmission in the prior art
  • FIG. 2 is a flowchart of a VPLS network data transmission method according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of data packet transmission in a VPLS network according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another VPLS network data transmission method according to an embodiment of the present invention
  • FIG. 5 is a structural diagram of a VPLS network data transmission apparatus according to an embodiment of the present invention
  • FIG. 6 is another structural diagram of a VPLS network data transmission apparatus according to an embodiment of the present invention
  • FIG. 7 is a structural diagram of a data transmission system in a VPLS network according to an embodiment of the present invention.
  • the embodiment of the present invention provides a data transmission method in a VPLS network, in which a virtual virtual link (Pseudo Wire, PW) and a standby PW are deployed in the VPLS network, and the double reconnection is avoided by the fast rerouting strategy.
  • a loop is formed between the incoming UPE and the NPE.
  • the standby PW is prohibited from forwarding data packets.
  • the data packet transmission is quickly switched from the primary PW to the standby PW.
  • a flow chart of a data transmission method in a VPLS network includes:
  • the standby PW is prohibited from forwarding the data packet.
  • all MAC address entries in the VPLS network point to the primary PW.
  • the primary PW fails, the data retransmission is restricted according to the fast rerouting policy, and the data packet is switched from the primary PW to the standby PW, and the standby PW is used to perform the data packet.
  • transmission can be:
  • the data retransmission policy is used to remove the restriction on the data packet forwarding of the standby PW, and the data packet transmission is switched from the primary PW to the standby PW.
  • the NPE that is connected to the primary PW sends a MAC Withdraw (Media Access Control Cancellation) message to the neighboring NPE, clears all MAC address entries related to the primary PW, and instructs the NPE in the VPLS network to relearn the MAC address. Address, the MAC address entry of all NPEs that relearn the MAC address points to the alternate PW.
  • MAC Withdraw Media Access Control Cancellation
  • the link is switched according to the fast rerouting policy configured on the UPE and the NPE.
  • the data packet transmission is switched from the standby PW to the active PW. Specifically, it can be:
  • the NPE that is connected to the standby PW sends a MAC Withdraw message, indicating that the NPE in the VPLS network re-learns the MAC address, and all the MAC address entries of the NPE that re-learn the MAC address point to the active PW.
  • the fault detection mechanism may be: Bidirectional Forwarding Detection (BFD) or OAM.
  • the primary PW and the standby PW are deployed in the VPLS network.
  • the fast re-routing policy can be used to perform fast link switching, which avoids the dual-homed access between the UPE and the NPE. Forming a loop improves the QoS of the VPLS network.
  • FIG. 3 it is a schematic diagram of data packet transmission in a VPLS network according to an embodiment of the present invention, where an NPE is located in a VPLS core network, and a UPE is located in a VPLS access network.
  • the network side performs fault detection, and performs fast fault detection at the forwarding level to instruct the primary PW and the standby PW to switch.
  • the standby PW is prohibited from forwarding data packets.
  • the data packets received from the CE are forwarded only through the primary PW. All MAC address entries on the VPLS network point to the primary PW. Indicates that the standby PW discards all the data packets of the received NPE.
  • the NPE that is connected to the primary PW sends a MAC withdraw message to the neighboring NPE to clear all the MAC address entries related to the primary PW.
  • the NPE re-learns the MAC address in the VPLS network, and the MAC address entries of all the NPEs that have learned the MAC address are directed to the standby PW, and the data packet transmission is switched from the primary PW to the standby PW.
  • this forwarding rule no loop is formed between the NPE and the UPE, which avoids the burden of running STP.
  • the data packet transmission can be switched from the standby PW to the active PW according to the fast rerouting policy configured on the UPE or the NPE.
  • the NPE connected to the standby PW sends a MAC Withdraw message, and then all the NPEs relearn the MAC address, and all the MAC address entries of the NPE that re-learn the MAC address point to the primary PW.
  • the primary PW and the standby PW are deployed in the VPLS network.
  • the fast re-routing policy can be used to perform fast link switching, which avoids the dual-homed access between the UPE and the NPE. Forming a loop improves the QoS of the VPLS network.
  • FIG. 4 is a flowchart of another VPLS network data transmission method according to an embodiment of the present invention. This embodiment is based on the data packet transmission diagram shown in FIG. 3, and specifically includes: 401, VPLS network initialization, enable the active PW. The data packets from the CE are forwarded only through the primary PW. All MAC address entries on the VPLS network point to the primary PW.
  • the NPE and the UPE send a detection message (ie, a MAC Withdraw message) to the standby PW through the primary PW according to the preset timing sending policy, and start a timer.
  • a detection message ie, a MAC Withdraw message
  • the NPE that is connected to the primary PW sends a MAC Withdraw message to the neighboring NPE, clears all MAC address entries related to the primary PW, and instructs the NPE in the VPLS network to relearn the MAC address, and all learns the MAC address again.
  • the MAC address entry of the NPE of the address points to the standby PW.
  • the fast rerouting strategy can adopt Detour or Bypass.
  • the link is switched according to the fast rerouting policy configured on the UPE and the NPE, and the data packet transmission is switched from the standby PW to the active PW.
  • the NPE that is connected to the standby PW sends a MAC Withdraw message, indicating that the NPE in the VPLS network re-learns the MAC address, and all the MAC address entries of the NPE that re-learn the MAC address point to the active PW.
  • the BFD detection mechanism detects that the standby PW is faulty
  • the data packet transmission is switched to the active PW.
  • the primary PW and the standby PW are deployed in the VPLS network.
  • the fast re-routing policy can be used to perform fast link switching, which avoids the dual-homed access between the UPE and the NPE. Forming a loop improves the QoS of the VPLS network.
  • FIG. 5 it is a structural diagram of a VPLS network data transmission device according to an embodiment of the present invention, where an active PW and a standby PW are deployed in the VPLS network.
  • the data transmission device in the VPLS network includes:
  • the fault detection module 51 is configured to perform fault detection on the primary PW;
  • the switching module 52 is configured to: when the fault detection module 51 detects that the primary PW is faulty, cancel the restriction on forwarding the data packet to the standby PW according to the fast rerouting policy, and switch the transmission of the data packet from the primary PW. To the standby PW, data packets are transmitted through the standby PW.
  • FIG. 6 is another structural diagram of a VPLS network data transmission apparatus according to an embodiment of the present invention, where the fault detection module 51 may include:
  • the configuration sub-module 511 is configured to configure a fault detection mechanism for the primary PW and the standby PW, and the detection sub-module 512 is configured to perform fault detection on the primary PW according to the fault detection mechanism configured by the configuration sub-module 511.
  • the switching module 52 can include:
  • the transmission switching sub-module 521 is configured to: when the fault detection module 51 detects that the primary PW is faulty, cancel the restriction on forwarding the data packet to the standby PW according to the fast re-routing policy, and switch the transmission of the data packet from the primary PW. Go to the alternate PW.
  • the data transmission device in the VPLS network may specifically be: UPE.
  • the primary PW and the standby PW are deployed in the VPLS network.
  • the switching module 52 can adopt the fast rerouting policy. For fast link switching, loops between the UPE and the NPE that are dual-homed are avoided, and the QoS of the VPLS network is improved.
  • FIG. 7 it is a structural diagram of a data transmission system in a VPLS network according to an embodiment of the present invention, where an active PW and a standby PW are deployed in the VPLS network.
  • the data transmission system in the VPLS network includes: UPE 71 and a first NPE 72,
  • the UPE 71 is configured to prevent the standby PW from forwarding the data packet when the primary PW performs data packet transmission, and performs fault detection on the primary PW. When the primary PW fails, the data packet is transmitted from the primary. Switch to the standby PW with the PW and transmit data packets through the standby PW.
  • the first NPE 72 is connected to the UPE 71 through the primary PW, and is configured to send a MAC Withdraw message to the NPE when the primary PW fails, clear all MAC address entries related to the primary PW, and indicate the VPLS network.
  • the NPE relearns the MAC address so that the relearned MAC address entry points to the alternate PW.
  • the UPE 71 When the primary PW is faulty, the UPE 71 performs link switching according to the fast rerouting policy, and switches the data packet transmission from the standby PW to the active PW.
  • the system may further include: a second NPE 73, connected to the UPE 71 by using the standby PW, configured to send a MAC Withdraw message to the neighbor NPE of the second NPE 73 when the primary PW fails to recover, and clear all the related to the standby PW.
  • the MAC address entry indicates that the NPE in the VPLS network re-learns the MAC address, so that the re-learned MAC address entry points to the active PW.
  • the primary PW and the standby PW are deployed in the VPLS network.
  • the fast rerouting policy can be used to perform fast link switching, which avoids dual-homed UPE and NPE. A loop is formed between them to improve the QoS of the VPLS network.
  • the modules in the device of the embodiment of the invention may be distributed in the device of the embodiment according to the embodiment, or may be correspondingly changed in one or more devices different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.
  • the present invention can be implemented by hardware, or by software plus a necessary general hardware platform.
  • the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server or network device, etc.) to perform the methods described in various embodiments of the present invention. Any changes that can be considered by those skilled in the art should fall within the scope of the present invention.

Landscapes

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

Abstract

L'invention porte sur un procédé, un dispositif et un système de transmission de données dans un réseau de service de réseau local privé virtuel (VPLS), un pseudofil (PW) principal et un pseudofil (PW) de secours étant agencés dans le VPLS. Le procédé de transmission de données consiste à : lorsque le PW principal transmet le message de données, interdire au PW de secours de transférer le message de données; lorsque le PW principal rencontre une défaillance, libérer le PW de secours de l'interdiction, pour transférer le message de données sur la base de la politique de routage duale rapide, basculer la transmission du message de données du PW principal au PW de secours, et transmettre le message de données par le PW de secours.
PCT/CN2009/071431 2008-08-19 2009-04-23 Procédé, dispositif et système de transmission de données dans un réseau vpls WO2010020126A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2008101474813A CN101340351A (zh) 2008-08-19 2008-08-19 一种vpls网络中的数据传输方法、装置和系统
CN200810147481.3 2008-08-19

Publications (1)

Publication Number Publication Date
WO2010020126A1 true WO2010020126A1 (fr) 2010-02-25

Family

ID=40214308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/071431 WO2010020126A1 (fr) 2008-08-19 2009-04-23 Procédé, dispositif et système de transmission de données dans un réseau vpls

Country Status (2)

Country Link
CN (1) CN101340351A (fr)
WO (1) WO2010020126A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111131532A (zh) * 2019-11-27 2020-05-08 深圳震有科技股份有限公司 自动更改mac地址方法及系统、计算机设备、介质
US11489588B2 (en) 2011-04-15 2022-11-01 Orckit Ip, Llc Method for supporting SNCP over packet network

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101340351A (zh) * 2008-08-19 2009-01-07 华为技术有限公司 一种vpls网络中的数据传输方法、装置和系统
CN101572666B (zh) * 2009-06-05 2012-01-04 杭州华三通信技术有限公司 虚拟专用局域网服务网络中流量切换的方法和装置
US8144575B2 (en) 2009-06-30 2012-03-27 Juniper Networks, Inc. Redundant pseudowires for border gateway patrol-based virtual private local area network service multi-homing environments
CN101945412A (zh) * 2009-07-07 2011-01-12 中兴通讯股份有限公司 基于用户级别的业务保护方法与装置
CN101964718B (zh) * 2009-07-23 2015-09-16 中兴通讯股份有限公司 以太网双归链路保护切换方法及系统
CN102055719A (zh) * 2009-10-29 2011-05-11 中兴通讯股份有限公司 点到多点伪线的保护方法及装置
CN102064995B (zh) * 2009-11-18 2012-12-19 中兴通讯股份有限公司 一种虚拟专用局域网络中链路保护的方法及设备
CN102244599B (zh) * 2010-05-11 2014-04-02 华为技术有限公司 防止或消除数据环路的方法以及网络节点和网络系统
CN102316014B (zh) * 2010-07-01 2015-01-21 杭州华三通信技术有限公司 分层虚拟专用局域网服务环境下的负载分担方法及路由器
CN102025541B (zh) * 2010-12-08 2014-12-10 中兴通讯股份有限公司 一种实现组播保护的方法及系统
CN102025646B (zh) * 2011-01-05 2013-08-28 杭州华三通信技术有限公司 链路倒换方法及其装置
CN102098231B (zh) 2011-03-18 2013-09-11 杭州华三通信技术有限公司 在h-vpls中实现流量快速切换的方法及设备
CN102694718B (zh) 2011-03-25 2016-03-30 华为技术有限公司 一种vpls快速重路由方法和设备
CN102281155A (zh) * 2011-08-01 2011-12-14 中兴通讯股份有限公司 基于分组传送网ptn的伪线pw切换方法、系统及装置
CN102223660B (zh) * 2011-08-02 2013-10-09 华为技术有限公司 一种控制主备伪线切换的方法和装置
CN103178971B (zh) * 2011-12-20 2015-12-16 华为技术有限公司 Pon保护方法及装置
CN102571426B (zh) * 2011-12-29 2015-05-20 杭州华三通信技术有限公司 一种双归保护方法和装置
CN102868616B (zh) * 2012-09-21 2015-07-08 华为技术有限公司 网络中虚mac地址表项建立的方法、路由器及系统
CN102946359B (zh) * 2012-11-26 2015-06-10 杭州华三通信技术有限公司 一种流量转发方法和设备
CN103888353B (zh) * 2012-12-19 2017-07-14 北京华为数字技术有限公司 保护组保护倒换回切处理方法及客户边缘设备
CN103560869B (zh) * 2013-09-10 2016-10-12 杭州华三通信技术有限公司 一种vpls链路切换、辅助切换装置和方法
CN105227332B (zh) * 2014-05-28 2019-01-18 中兴通讯股份有限公司 Pw双归保护倒换方法及系统
CN104253752B (zh) * 2014-09-09 2017-09-29 烽火通信科技股份有限公司 在ldp协议中实现lsp平滑切换的方法及系统
CN106850256B (zh) * 2016-12-21 2019-09-20 武汉船舶通信研究所 一种分组传送网保护方法、网元设备
JP6673418B2 (ja) * 2018-09-19 2020-03-25 日本電気株式会社 パケット転送システム、パケット転送装置の切り換え方法およびパケット転送装置
CN109995651B (zh) * 2019-03-28 2021-05-14 新华三技术有限公司 一种伪线建立方法及装置
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
CN111817881B (zh) * 2020-06-19 2023-12-26 新华三信息安全技术有限公司 一种故障处理方法和相关装置
CN115002024A (zh) * 2022-07-05 2022-09-02 杭州云合智网技术有限公司 消除报文转发成环的报文阻断方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070086448A1 (en) * 2005-10-17 2007-04-19 Sbc Knowledge Ventures Lp Integrated pseudo-wire and virtual routing and forwarding on a single provider edge router
CN101047601A (zh) * 2006-04-10 2007-10-03 华为技术有限公司 基于vpls的双归属网络的实现方法及系统
CN101106486A (zh) * 2007-08-13 2008-01-16 杭州华三通信技术有限公司 虚链路故障的检测处理方法及组件
CN101340351A (zh) * 2008-08-19 2009-01-07 华为技术有限公司 一种vpls网络中的数据传输方法、装置和系统
CN101374075A (zh) * 2008-06-30 2009-02-25 华为技术有限公司 保护组播源的方法、装置和系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070086448A1 (en) * 2005-10-17 2007-04-19 Sbc Knowledge Ventures Lp Integrated pseudo-wire and virtual routing and forwarding on a single provider edge router
CN101047601A (zh) * 2006-04-10 2007-10-03 华为技术有限公司 基于vpls的双归属网络的实现方法及系统
CN101106486A (zh) * 2007-08-13 2008-01-16 杭州华三通信技术有限公司 虚链路故障的检测处理方法及组件
CN101374075A (zh) * 2008-06-30 2009-02-25 华为技术有限公司 保护组播源的方法、装置和系统
CN101340351A (zh) * 2008-08-19 2009-01-07 华为技术有限公司 一种vpls网络中的数据传输方法、装置和系统

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11489588B2 (en) 2011-04-15 2022-11-01 Orckit Ip, Llc Method for supporting SNCP over packet network
US11870487B2 (en) 2011-04-15 2024-01-09 Orckit Ip, Llc Method for supporting SNCP over packet network
CN111131532A (zh) * 2019-11-27 2020-05-08 深圳震有科技股份有限公司 自动更改mac地址方法及系统、计算机设备、介质

Also Published As

Publication number Publication date
CN101340351A (zh) 2009-01-07

Similar Documents

Publication Publication Date Title
WO2010020126A1 (fr) Procédé, dispositif et système de transmission de données dans un réseau vpls
US10623307B2 (en) Method and system for asymmetric redundancy mechanisms in multi-homed network access topologies
JP4802280B2 (ja) 多機能サービスを提供するメトロイーサネット（登録商標）ネットワークのネットワーキングにおける高信頼性処理の方法およびシステム
JP4899959B2 (ja) Ｖｐｎ装置
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
WO2012028029A1 (fr) Procédé et système de commutation
WO2007115493A1 (fr) Procédé, dispositif et système pour réaliser la commutation dans le réseau à double anneau de réseau vpls
WO2009105974A1 (fr) Procédé et appareil pour un déroutage rapide dans un réseau privé virtuel (vpn) de commutation multiprotocole par étiquette (mpls)
WO2007140683A1 (fr) Procédé, système et dispositif de protection de service, basés sur l'absence de connexion
WO2007016834A1 (fr) Procede rapide de convergence de services de point a point et dispositif associe cote fournisseur de services
US8064338B2 (en) HVPLS hub connectivity failure recovery with dynamic spoke pseudowires
JP2013542662A (ja) ネットワーク障害から復旧するための高速フラッディングベースの高速収束
WO2011157151A2 (fr) Procédé, dispositif et système pour réaliser une sauvegarde insensible aux sinistres
WO2009092253A1 (fr) Procédé et routeur pour réacheminement rapide
WO2012109941A1 (fr) Procédé et système de sauvegarde par redondance dans un réseau trill
WO2012092824A1 (fr) Procédé et dispositif de commutation de pseudo-circuit
JP2009524332A (ja) リング・ネットワークのｖｐｌｓ障害保護
WO2012159489A1 (fr) Procédé de commutation, système et dispositif fournisseur de double anneau pour réseau à double anneau de pseudo-circuit
WO2012079375A1 (fr) Procédé et système de protection de liaison dans un réseau privé virtuel
JP2012529805A (ja) 二台のコンピュータによるホットスタンバイの方法、機器およびシステム
WO2012016458A1 (fr) Procédé et appareil de transmission de données dans un réseau privé virtuel de couche 2
WO2012162946A1 (fr) Procédé et système de traitement de message
JP6911794B2 (ja) ネットワーク装置、ネットワーク制御方法及びプログラム
WO2008131654A1 (fr) Système de réseau et procédé pour établir le trajet le plus court et transmettre le paquet de diffusion
WO2012146097A1 (fr) Réseau vpls et procédé et dispositif de commutation d'anneau ethernet

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: 09807825

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: 09807825

Country of ref document: EP

Kind code of ref document: A1