WO2009117923A1 - Méthode, appareil et dispositif de communication pour la transmission de données - Google Patents

Méthode, appareil et dispositif de communication pour la transmission de données Download PDF

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Publication number
WO2009117923A1
WO2009117923A1 PCT/CN2009/070768 CN2009070768W WO2009117923A1 WO 2009117923 A1 WO2009117923 A1 WO 2009117923A1 CN 2009070768 W CN2009070768 W CN 2009070768W WO 2009117923 A1 WO2009117923 A1 WO 2009117923A1
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WO
WIPO (PCT)
Prior art keywords
ethernet
vlan
tag
ethernet packet
packet
Prior art date
Application number
PCT/CN2009/070768
Other languages
English (en)
Chinese (zh)
Inventor
成永光
易惕斌
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 WO2009117923A1 publication Critical patent/WO2009117923A1/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]
    • H04L12/4645—Details on frame tagging
    • 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
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling

Definitions

  • the present invention relates to the field of network and communication technologies, and in particular, to a method, a device, and a communication device for transmitting data in an Ethernet. Background technique
  • TDM Time Division Multiplexed
  • IP Internet Protocol
  • FIG. 1 is a network structure diagram of an Ethernet bearer synchronous TDM implemented by IP switching in the prior art.
  • the Customer Edge (CE) device at the edge of the IP network first encapsulates the TDM data in IP, then encapsulates the IP tunnel pseudowire in the Ethernet encapsulation, and completes the TDM across the Ethernet according to the IP address through IP forwarding.
  • the CE device completes the IP encapsulation and decapsulation of the TDM data; the intermediate device only needs IP forwarding.
  • the primary tunnel link fails, it switches to the backup link through fast re-routing.
  • the prior art has at least the following problems: The cost of establishing an IP tunnel and performing IP tunnel QoS guarantee is high. Summary of the invention
  • the embodiments of the present invention provide a method, a device, and a communication device for data transmission, which reduce the implementation cost of the Ethernet bearer synchronous TDM.
  • a message processing unit configured to obtain an Ethernet message encapsulated by synchronous time division multiplexing TDM data
  • a sending unit configured to send the Ethernet packet to the receiving device in the corresponding virtual local area network VLAN according to the virtual local area network label VLAN TAG and the destination medium access control MAC address in the Ethernet packet obtained by the packet unit.
  • a communication device provided by an embodiment of the present invention includes a device for transmitting data, where the device for transmitting data includes:
  • the packet processing unit is configured to obtain an Ethernet packet encapsulated by the synchronous time division multiplexing TDM data, and use the virtual local area network label VLAN TAG as the TDM data identifier, where the Ethernet packet includes the virtual local area network label VLAN TAG and the destination medium access control.
  • MAC address
  • a sending unit configured to send the Ethernet packet to the receiving device in the corresponding virtual local area network VLAN according to the virtual local area network label VLAN TAG and the destination medium access control MAC address in the Ethernet packet obtained by the packet unit.
  • the TAG and the destination medium access control MAC address and send the Ethernet packet to the receiving device in the corresponding virtual local area network VLAN.
  • a message processing unit configured to obtain an Ethernet message encapsulated by synchronous time division multiplexing TDM data
  • a sending unit configured to send the Ethernet packet to a corresponding virtual local area network (VLAN) according to the service label Service TAG, the virtual local area network label (VLAN), and the destination medium access control MAC address in the Ethernet packet obtained by the packet unit.
  • Receiving device configured to send the Ethernet packet to a corresponding virtual local area network (VLAN) according to the service label Service TAG, the virtual local area network label (VLAN), and the destination medium access control MAC address in the Ethernet packet obtained by the packet unit.
  • Another communication device provided by an embodiment of the present invention includes a device for transmitting data, where the number The device to be sent includes:
  • a packet processing unit configured to obtain an Ethernet packet encapsulated by the synchronous time division multiplexing TDM data, where the Ethernet packet includes a service label Service TAG, a virtual local area network label VLAN TAG, and a destination medium access control MAC address;
  • a sending unit configured to send the Ethernet packet to a corresponding virtual local area network (VLAN) according to the service label Service TAG, the virtual local area network label (VLAN), and the destination medium access control MAC address in the Ethernet packet obtained by the packet unit.
  • Receiving device configured to send the Ethernet packet to a corresponding virtual local area network (VLAN) according to the service label Service TAG, the virtual local area network label (VLAN), and the destination medium access control MAC address in the Ethernet packet obtained by the packet unit.
  • the synchronous time division multiplexing TDM data is encapsulated into an Ethernet packet, and the virtual local area network label VLAN TAG is used as the TDM data identifier, and the second layer data is directly established to be forwarded in the Ethernet, compared to the existing Technology, no longer rely on IP addresses to identify TDM data.
  • the middle switching device can be implemented only by a Layer 2 Ethernet switch. Circuit simulation can be implemented on Ethernet.
  • FIG. 1 is a network structure diagram of an Ethernet bearer synchronization TDM in the prior art
  • FIG. 2 is a schematic flowchart of a data transmission method according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of data encapsulation of a TDM channel according to an embodiment of the present invention.
  • This embodiment transmits over Ethernet (packet network) by Ethernet Forwarding Synchronous Time Division Multiplexing (TDM) data.
  • TDM Time Division Multiplexing
  • the execution device for data transmission in this embodiment may be independently set, or may be integrated in an Interworking Forward (IFF) device at the edge of the Ethernet, or may be integrated in an intermediate device of the Ethernet.
  • IFF Interworking Forward
  • a method for data transmission includes the following steps: 201. Obtain an Ethernet packet encapsulated by TDM data, where the Ethernet packet includes a virtual Virtual Local Area Network TAG (VLAN TAG) Destination Media Access Control (MAC) address;
  • VLAN TAG Virtual Local Area Network TAG
  • MAC Destination Media Access Control
  • the method of obtaining the Ethernet packet encapsulated by the TDM data can be obtained by the package or directly received:
  • the method of encapsulation is: when the unit for performing data transmission is integrated in the Ethernet IWF device, the Ethernet IWF device needs to encapsulate the TDM data received from the TDM network into an Ethernet packet, that is, the Ethernet IWF device composes the TDM data into a packet. And encapsulated into an Ethernet frame to get an Ethernet message.
  • Direct receiving mode When the unit that performs data transmission is integrated in the intermediate device of the Ethernet, the intermediate device only needs to directly receive the Ethernet packet encapsulated by the TDM data.
  • the receiving device may be an intermediate device in the corresponding VLAN or an Ethernet IWF device corresponding to the destination MAC address.
  • the Ethernet packet can be sent to the receiving device in the corresponding VLAN by broadcast or unicast, where
  • the way of broadcasting can include:
  • the Ethernet packet is broadcast in the VLAN to which the Ethernet packet belongs.
  • the intermediate device in the VLAN can receive the Ethernet packet.
  • the receiving device that receives the Ethernet packet determines that it is in the routing of the Ethernet packet in the VLAN to which it belongs, it forwards the Ethernet packet; the receiving device that receives the Ethernet packet determines itself. If the Ethernet packet is not in the VLAN of the VLAN, the Ethernet packet is discarded.
  • the device in the VLAN to which the Ethernet packet belongs receives the Ethernet packet, and the routing table is searched according to the VLAN TAG and the destination MAC address in the Ethernet packet.
  • the receiving device that receives the Ethernet packet determines that it is in the Ethernet packet.
  • the Ethernet packet is forwarded when it is on the route of the VLAN. Further, the Ethernet packet may be forwarded in the VLAN by broadcast or unicast until the Ethernet message reaches the Ethernet IWF device corresponding to the destination MAC address in the Ethernet text; when the receiving device that receives the Ethernet packet determines that it is not
  • the Ethernet packet is in the VLAN to which it belongs. When the route is on, the Ethernet packet is discarded.
  • the unicast method can include:
  • the routing information (which can be a routing table) is obtained, and the address of the next hop receiving device is obtained.
  • next hop receiving device can forward the Ethernet packet in the VLAN by broadcast or unicast until the Ethernet packet reaches the destination MAC address in the Ethernet packet.
  • the corresponding Ethernet IWF device can forward the Ethernet packet in the VLAN by broadcast or unicast until the Ethernet packet reaches the destination MAC address in the Ethernet packet.
  • the Layer 2 Ethernet forwarding is directly established, and the TDM data is directly identified according to the virtual IP address.
  • the intermediate switching device can be implemented only by the Layer 2 Ethernet switch, and the circuit simulation can be implemented on the Ethernet. It can also be applied to the exchange of TDM data between different TDM units inside the device, which is simple to implement, low in equipment requirements, and greatly reduces the implementation cost.
  • the embodiment provides a device for data transmission, and the device can be independently set, or integrated in an Ethernet Edge Interconnect Forwarding (IWF) device, or integrated in an Ethernet intermediate device, and can also be integrated in communication.
  • IWF Ethernet Edge Interconnect Forwarding
  • the apparatus 300 for transmitting data in the embodiment of the present invention includes:
  • the message processing unit 301 is configured to obtain an Ethernet packet encapsulated by the synchronous time division multiplexing TDM data, where the Ethernet packet includes a virtual local area network label (VLAN TAG) and a destination medium access control (MAC) address;
  • VLAN TAG virtual local area network label
  • MAC destination medium access control
  • the sending unit 302 is configured to send the Ethernet packet to the receiving device in the corresponding virtual local area network VLAN according to the virtual local area network label VLAN TAG and the destination medium access control MAC address in the Ethernet packet obtained by the packet unit.
  • the text processing unit 301 includes:
  • a receiving subunit 301a configured to receive TDM data
  • the encapsulating subunit 301b is configured to encapsulate the TDM data received by the receiving subunit into an Ethernet message.
  • the sending unit 302 specifically includes: The locating unit 302a is configured to search the routing table according to the VLAN TAG and the destination MAC address in the Ethernet packet obtained by the packet unit, to obtain a next hop address;
  • the sending sub-unit 302b is configured to send the Ethernet packet obtained by the packet unit to the receiving device corresponding to the next hop address obtained by the searching sub-unit.
  • the device for transmitting the data can also implement the transmission of the Ethernet message in the unicast mode in the Ethernet, thereby realizing the TDM data to be transmitted across the Ethernet.
  • the sending unit 302 further includes:
  • the sub-unit 302c is configured to select a VLAN to which the Ethernet belongs according to the VLAN TAG in the Ethernet packet obtained by the packet unit.
  • the broadcast sub-unit 302d is configured to: the Ethernet message obtained by broadcasting the message unit in the VLAN to which the Ethernet packet selected by the sub-unit belongs is selected.
  • the apparatus including the data transmission of the selection sub-unit 302c and the broadcast sub-unit 302d can implement the transmission of the Ethernet message in a broadcast manner in the Ethernet, thereby realizing the TDM data transmission across the Ethernet.
  • This embodiment is basically the same as the first embodiment. The difference is that when the TDM data is obtained, the service tag Service TAG (the inner VLAN TAG) is encapsulated, and the service TAG is used to identify the data and data type of the TDM channel.
  • the format is shown in Figure 4.
  • the outer VLAN TAGs of different quality of service are mapped by different service identifiers and service types identified by the Service TAG, and the destination media access control (MAC) address is obtained according to the data destination, and then the Ethernet MAC address header is obtained.
  • the outer VLAN is used to forward the Ethernet packet after the data is encapsulated.
  • the other processing is basically the same as that in the first embodiment, and details are not described herein.
  • Service TAG Service TAG, as a VLAN TAG extension, its format is shown in Table 1. Table 1
  • the device for transmitting data provided in this embodiment is basically the same as the device in the first embodiment, and the difference is:
  • the packet processing unit is configured to obtain an Ethernet packet encapsulated by the synchronous time division multiplexing TDM data, where the Ethernet packet encapsulates a service label Service TAG, a virtual local area network label VLAN TAG, and a destination medium access control MAC address.
  • the encapsulation subunit encapsulates the TDM data received by the receiving subunit into an Ethernet text by using a service tag Service TAG, a virtual local area network tag VLAN TAG, and a destination medium access control MAC address.

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

Abstract

L'invention porte sur une méthode de transmission de données comprenant les étapes suivantes: obtention d'un message Ethernet encapsulé dans des données TDM (à multiplexage temporel) (201); et sur la base de la VLAN TAG (balise de réseau local virtuel) et de l'adresse de destination MAC (de contrôle d'accès aux média) du message Ethernet; et transmission du message Ethernet du dispositif récepteur du réseau local virtuel correspondant (202). L'invention porte également sur un appareil et un dispositif de communication permettant: de transmettre des données, d'établir directement une transmission sur la couche 2 d'Ethernet, de transmettre les données TDM sur la base de la VLAN TAG et de l'adresse MAC. Comparée à l'art antérieur, cette solution ne dépend plus de l'adresse IP pour identifier les données TDM. Le dispositif d'échange moyen peut être réalisé par l'échangeur de couche 2, peut effectuer l'émulation de circuits dans l'Ethernet et peut s'appliquer aux échanges de données TDM entre les différentes unités TDM du dispositif.
PCT/CN2009/070768 2008-03-27 2009-03-13 Méthode, appareil et dispositif de communication pour la transmission de données WO2009117923A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810088057A CN101547137A (zh) 2008-03-27 2008-03-27 数据发送的方法、装置及通信设备
CN200810088057.6 2008-03-27

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WO2009117923A1 true WO2009117923A1 (fr) 2009-10-01

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Cited By (1)

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CN110738017A (zh) * 2019-09-24 2020-01-31 深圳探科技术有限公司 分布式集成电路仿真方法、装置、计算设备及存储介质

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CN101714951B (zh) * 2009-12-03 2012-08-08 华为技术有限公司 Ces中业务数据的发送、接收方法及设备
CN101883050B (zh) * 2010-06-30 2015-08-12 中兴通讯股份有限公司 一种实现业务限速的系统及方法
CN106664233B (zh) * 2014-11-11 2019-11-29 华为技术有限公司 差分时钟恢复的处理方法和装置
CN106330499A (zh) * 2015-06-25 2017-01-11 中兴通讯股份有限公司 一种时分复用数据的传输方法、装置及网络侧边缘设备
WO2021184291A1 (fr) * 2020-03-19 2021-09-23 西安诺瓦星云科技股份有限公司 Procédé, appareil et système de transmission de données
CN114501399A (zh) * 2020-11-11 2022-05-13 南京中兴新软件有限责任公司 无线回传方法及其装置、接入设备、计算机可读存储介质

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CN1852240A (zh) * 2005-10-19 2006-10-25 华为技术有限公司 一种桥接转发方法
CN101119290A (zh) * 2006-08-01 2008-02-06 华为技术有限公司 以太网支持源特定组播转发的方法及系统

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US20020199021A1 (en) * 2001-06-26 2002-12-26 Niels Beier Method and apparatus for using the type/length field in an ethernet mac header for carrying generic tags/labels
CN1458771A (zh) * 2002-05-15 2003-11-26 华为技术有限公司 一种基于二层交换设备的组播报文转发方法
CN1852240A (zh) * 2005-10-19 2006-10-25 华为技术有限公司 一种桥接转发方法
CN101119290A (zh) * 2006-08-01 2008-02-06 华为技术有限公司 以太网支持源特定组播转发的方法及系统

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Publication number Priority date Publication date Assignee Title
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