WO2011116662A1 - Procédé et appareil d'intercommunication de services ethernet - Google Patents

Procédé et appareil d'intercommunication de services ethernet Download PDF

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Publication number
WO2011116662A1
WO2011116662A1 PCT/CN2011/071837 CN2011071837W WO2011116662A1 WO 2011116662 A1 WO2011116662 A1 WO 2011116662A1 CN 2011071837 W CN2011071837 W CN 2011071837W WO 2011116662 A1 WO2011116662 A1 WO 2011116662A1
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WO
WIPO (PCT)
Prior art keywords
mstp
vcg
frame format
ptn
ethernet service
Prior art date
Application number
PCT/CN2011/071837
Other languages
English (en)
Chinese (zh)
Inventor
张君辉
周建国
赵颢
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2011116662A1 publication Critical patent/WO2011116662A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]

Definitions

  • the present invention relates to the field of communications, and in particular, to an Ethernet service interworking method and apparatus. Background technique
  • the PTN network provides one of the best performance, compatible with Ethernet, Asynchronous Transfer Mode (Async Mode), SDH (Synchronous Digital Hierarchy), PDH (Plesiochronous Digital Hierarchy), PPP (Point- To-Point Protocol, high-level data link control (HDC), unified relay platform for various technologies such as frame relay, eliminating the diversity of network construction types, and replacing them with With the diversity of interface types, the original network devices, such as ATM switches, Ethernet switches, and PDH optical transceivers, can be interconnected through the PTN network, or directly replaced by the PTN ATM interface, Ethernet interface, and PDH interface.
  • the present invention is proposed in view of the problem that the existing MSPT network and the PTN network service cannot be effectively interworked in the prior art, and the interworking between the Ethernet service between the MSTP network and the PTN network can be realized, and the network operation cost is reduced.
  • Ethernet service interworking method and device provided by the present invention are specifically:
  • the Ethernet service interworking method includes: implementing the Ethernet service interworking between the multi-service transport platform MSTP and the packet-switched network PTN by using a virtual container group VCG interface manner, where the VCG interface is composed of multiple virtual container VC sub-channels The logical interface that makes up.
  • the Ethernet service interworking between the MSTP and the PTN is implemented by using the VCG interface, and the method further includes: mapping the MSTP Ethernet service encapsulated in the SDH frame format to the VCG, and mapping the packet to the pseudowire according to the VCG. Access the PTN for the VPLS frame format.
  • the SDH frame format includes: a user, a GFP, a VC4, a VC12, and an STM-N; and the VPLS frame format includes: a D-MAC, an S-MAC, a pseudowire, and a user.
  • the Ethernet service interworking between the MSTP and the PTN is implemented by using the VCG interface, and the method further includes: mapping the PTN Ethernet service encapsulated in the VPLS frame format to the VCG, and converting to the MSTP frame format according to the VCG. Enter MSTP.
  • the VPLS frame format includes: D-MAC, S-MAC, VLAN ID, tunnel label, pseudowire label, user 4 ⁇ text;
  • SDH frame format includes: user ⁇ , GFP, VC4, VC12, STM-N , tunnel labels, pseudowires.
  • the Ethernet service interworking device includes: a first conversion module, configured to convert an MSTP Ethernet service into a PTN Ethernet service by using a VCG interface, and a second conversion module, configured to convert the PTN Ethernet service into a VCG interface MSTP Ethernet business.
  • the first conversion module further includes: a first mapping submodule, configured to map an MSTP Ethernet service encapsulated in an SDH frame format to a VCG; and a first encapsulation submodule, configured to map to a VPLS according to the VCG mapping to the pseudowire
  • the frame format is connected to the PTN.
  • the SDH frame format includes: a user, a GFP, a VC4, a VC12, and an STM-N; and the VPLS frame format includes: a D-MAC, an S-MAC, a pseudowire, and a user.
  • the second conversion module further includes: a second mapping sub-module, which maps the PTN Ethernet service encapsulated in the VPLS frame format to the VCG; and a second encapsulation sub-module, configured to access the MSTP according to the VCG conversion to the MSTP frame format.
  • a second mapping sub-module which maps the PTN Ethernet service encapsulated in the VPLS frame format to the VCG
  • a second encapsulation sub-module configured to access the MSTP according to the VCG conversion to the MSTP frame format.
  • the VPLS frame format includes: D-MAC, S-MAC, VLAN ID, tunnel label, pseudowire label, user 4 ⁇ text;
  • SDH frame format includes: user ⁇ , GFP, VC4, VC12, STM-N , tunnel labels, pseudowires.
  • the MSTP network is used as the reference point of the PTN network, and the MSTP network is used as the UNI side or the NNI side of the PTN network to implement the Ethernet service between the MSTP network and the PTN network. Interoperability reduces network operating costs.
  • FIG. 1 is a schematic diagram of a U I side networking of an MSTP network as a PTN network according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an NTP side networking of an MSTP network as a PTN network according to an embodiment of the present invention
  • FIG. 3 is a flowchart of an Ethernet service interworking method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of format conversion of a U I side message according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a format conversion of a N I side message according to an embodiment of the present invention.
  • FIG. 6 is a block diagram of an Ethernet service interworking device in accordance with an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic diagram of an MSTP network as a UI side networking of a PTN network according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an NTI side networking of an MSTP network as a PTN network according to an embodiment of the present invention.
  • user equipments A and B are connected to the existing MSTP network, and the MSTP network is aggregated to the PTN network.
  • the MSTP network is accessed as a UNI device.
  • user equipments A and B are connected to the newly created PTN network, and the PTN network is aggregated to the existing MSTP network.
  • the MSTP network is accessed as an NI device.
  • an Ethernet service interworking method is provided.
  • the present invention implements Ethernet service interworking between the MSTP network and the PTN network through a VCG (Virtual Container Group) interface.
  • VCG Virtual Container Group
  • the VCG interface is a logical interface composed of multiple virtual container (VC) sub-channels.
  • FIG. 3 is a flowchart of an Ethernet service interworking method according to an embodiment of the present invention. As shown in FIG. 3, the method includes:
  • Step S302 On the U I side, the MSTP Ethernet service encapsulated in the SDH frame format is mapped to the VCG, and the PTN is accessed in the VPLS frame format according to the VCG mapping to the pseudowire.
  • Step S304 On the NNI side, the PTN Ethernet service encapsulated in the VPLS frame format is mapped to the VCG, and the MSTP is converted into the MSTP frame format according to the VCG.
  • FIG. 4 is a schematic diagram of a format conversion of a UI side message according to an embodiment of the present invention.
  • the service that enters the MSTP network enters the PTN network through the VCG interface. After the pseudowire is added, the tunnel is transmitted. After the label is detached, the restored service is placed on the VCG interface and transmitted to the peer.
  • VCG extracts several VC sub-channels from synchronous transmission module 1 (STM-1) to form a logical interface.
  • STM-1 synchronous transmission module 1
  • Step 1 The Ethernet service of the MSTP network is accessed from the STM port of the method, and is uniformly encapsulated into an SDK frame format, including VC4, VC12, GFP (Generic Framing Procedure) and user packets.
  • SDK frame format including VC4, VC12, GFP (Generic Framing Procedure) and user packets.
  • Step 2 extracting SDH frame header information, respectively mapping to different VCGs
  • Step 3 mapping the VCG to a pseudowire and encapsulating it into an MPLS frame format, including an outer DMAC, a SMAC, a pseudowire, and a user interface;
  • Step 4 The service accesses the PTN device according to the pseudowire, and forwards according to the DMAC of the Ethernet service in the VSI (Virtual Switching Instance).
  • VSI Virtual Switching Instance
  • FIG. 5 is a schematic diagram of a format conversion of a N I side message according to an embodiment of the present invention.
  • the service with the pseudowire and tunnel label in the PTN network enters the MSTP network through the VCG interface for transmission and is sent to another node of the PTN network.
  • the processing steps of the MSTI as the NNI side of the PTN specifically include: Step 1:
  • the PTN network Ethernet service enters the PTN device and is encapsulated into an MPLS frame format, including an outer destination medium access address (D-MAC) and a source medium access address (S- MAC), a virtual Ethernet identifier (VLAN ID) used to distinguish the VCG number, and a tunnel label, a pseudowire label, and a user packet;
  • D-MAC outer destination medium access address
  • S- MAC source medium access address
  • VLAN ID virtual Ethernet identifier
  • Step 2 The method distinguishes the VCG number according to the outer VLAN ID.
  • Step 3 Map the VCG to the corresponding VC4/VC12 and encapsulate the frame format into MSTP.
  • Step 4 The service accesses the MSTP network and forwards the packet.
  • an Ethernet service interworking device is further provided.
  • FIG. 6 is a block diagram of an Ethernet service interworking device according to an embodiment of the present invention, as shown in FIG.
  • the device includes:
  • the first conversion module 10 is configured to convert the MSTP Ethernet service into the PTN Ethernet service by using the VCG interface
  • the second conversion module 20 is configured to convert the PTN Ethernet service into the MSTP Ethernet service by using the VCG interface.
  • the first conversion module 10 further includes: a first mapping submodule, configured to map an MSTP network Ethernet service encapsulated in an SDH frame format to a VCG, where the first encapsulation submodule is configured to be mapped to a pseudowire according to the VCG Access the PTN network for the VPLS frame format.
  • a first mapping submodule configured to map an MSTP network Ethernet service encapsulated in an SDH frame format to a VCG
  • the first encapsulation submodule is configured to be mapped to a pseudowire according to the VCG Access the PTN network for the VPLS frame format.
  • the second conversion module 20 further includes: a second mapping sub-module, which maps the PTN network Ethernet service encapsulated in the VPLS frame format to the VCG, and the second encapsulation sub-module is configured to access the MSTP network according to the VCG conversion to the MSTP frame format.
  • a second mapping sub-module which maps the PTN network Ethernet service encapsulated in the VPLS frame format to the VCG
  • the second encapsulation sub-module is configured to access the MSTP network according to the VCG conversion to the MSTP frame format.
  • the MSTP network is used as the reference point of the PTN network, and the MSTP network is used as the UI side or the NI side of the PTN network to implement the interworking of the Ethernet services between the MSTP network and the PTN network.
  • Network operating costs are used.

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

Abstract

La présente invention se rapporte à un procédé et à un appareil d'intercommunication de services Ethernet. Le procédé comprend les étapes suivantes : l'intercommunication de services Ethernet entre une plate-forme de transport multiservice (MSTP) et le réseau de transport par paquets (PTN) est mise en œuvre au moyen de l'interface de groupe de contenants virtuels (VCG), l'interface de groupe VCG étant une interface logique se composant de multiples sous-canaux de contenant virtuel (VC). Avec la présente invention, l'intercommunication de services Ethernet entre le réseau de plate-formes MSTP et le réseau PTN peut être mise en œuvre, ce qui permet de réduire le coût de fonctionnement du réseau.
PCT/CN2011/071837 2010-03-24 2011-03-15 Procédé et appareil d'intercommunication de services ethernet WO2011116662A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010139686.4 2010-03-24
CN201010139686.4A CN101815024B (zh) 2010-03-24 2010-03-24 以太业务互通方法及装置

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CN101815024B (zh) * 2010-03-24 2014-10-22 中兴通讯股份有限公司 以太业务互通方法及装置
CN102801601B (zh) * 2011-05-24 2016-03-02 中兴通讯股份有限公司 PTN兼容MSTP网络EoS业务的实现方法及设备
WO2012167655A1 (fr) * 2011-06-09 2012-12-13 中兴通讯股份有限公司 Dispositif de réseau de transmission par paquets et procédé de commutation de mode de transfert asynchrone
CN102957634A (zh) * 2011-08-22 2013-03-06 中兴通讯股份有限公司 嵌入控制信道信息传输方法和装置
CN102983928B (zh) * 2011-09-02 2015-05-13 中国电信股份有限公司 封装sdh帧、解封装ptn帧的方法、及ptn设备
CN103634188B (zh) * 2012-08-24 2017-04-12 中国电信股份有限公司 一种处理pos端口的方法、otn设备及系统
CN103684957B (zh) * 2012-09-12 2018-08-10 南京中兴新软件有限责任公司 报文处理方法及装置
CN106487548B (zh) * 2015-08-26 2020-09-15 南京中兴新软件有限责任公司 一种处理potn虚接口的方法及装置
CN106789637B (zh) * 2015-11-24 2020-02-04 中国移动通信集团公司 一种跨域业务互通的路径建立方法、控制器及系统
CN106921641B (zh) * 2015-12-28 2020-04-03 华为技术有限公司 传输报文的方法和装置
CN105847045B (zh) * 2016-01-04 2019-06-18 中国电子科技网络信息安全有限公司 一种基于Docker容器的应用封装系统及管理方法
CN105634647B (zh) * 2016-01-07 2018-01-02 烽火通信科技股份有限公司 实现ptn设备平台前向兼容mstp设备的方法及系统
CN109150747B (zh) * 2017-06-15 2023-01-10 中兴通讯股份有限公司 一种变更业务带宽的方法、装置及计算机可读存储介质

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