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WO2009056039A1 - A METHOD AND DEVICE FOR REALIZING AUTOMATICAL DISTRIBUTION OF QinQ BUSINESS LABEL TERMINAL TO TERMINAL - Google Patents

A METHOD AND DEVICE FOR REALIZING AUTOMATICAL DISTRIBUTION OF QinQ BUSINESS LABEL TERMINAL TO TERMINAL Download PDF

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Publication number
WO2009056039A1
WO2009056039A1 PCT/CN2008/072780 CN2008072780W WO2009056039A1 WO 2009056039 A1 WO2009056039 A1 WO 2009056039A1 CN 2008072780 W CN2008072780 W CN 2008072780W WO 2009056039 A1 WO2009056039 A1 WO 2009056039A1
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WIPO (PCT)
Prior art keywords
vlan tag
operation mode
vlan
node
label
Prior art date
Legal status (The legal status 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 status listed.)
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Application number
PCT/CN2008/072780
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English (en)
French (fr)
Inventor
Zhe DONG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP08846106.6A priority Critical patent/EP2093950B1/en
Publication of WO2009056039A1 publication Critical patent/WO2009056039A1/zh
Priority to US12/506,034 priority patent/US20090279552A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4641Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H04L12/4645Details on frame tagging
    • H04L12/465Details on frame tagging wherein a single frame includes a plurality of VLAN tags
    • H04L12/4658Details on frame tagging wherein a single frame includes a plurality of VLAN tags wherein a VLAN tag represents a service provider backbone VLAN, e.g. B-Tag, S-Tag
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4641Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H04L12/4645Details on frame tagging
    • H04L12/465Details on frame tagging wherein a single frame includes a plurality of VLAN tags
    • H04L12/4654Details on frame tagging wherein a single frame includes a plurality of VLAN tags wherein a VLAN tag represents a customer VLAN, e.g. C-Tag
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4641Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H04L12/4645Details on frame tagging
    • H04L12/4666Operational details on the addition or the stripping of a tag in a frame, e.g. at a provider edge node

Definitions

  • the present invention relates to the field of data transmission technologies, and in particular, to a method and apparatus for implementing end-to-end automatic assignment of QinQ service tags.
  • VLAN virtual local area network
  • VLANs are used to identify a large number of users.
  • the QinQ technology is added.
  • the QinQ technology adds a layer of 802.1Q tags to the original 802.1Q packets. Due to the use of this two-layer stacking technique, the number of VLANs is correspondingly increased to become 4K*4K.
  • QinQ's double-layer label has been further expanded to make its inner and outer labels represent different information.
  • the internal label is used to represent the user, which is called the C-VLAN (Customer VLAN).
  • the outer label represents the service, which is called S-VLAN (Service VLAN).
  • FIG. 1 it is a schematic diagram of a whole process of performing QinQ encapsulation and transmission identification on user data in the prior art.
  • the network system applies different outer S-VLAN tags or ports based on different C-VLAN tags to complete QinQ encapsulation.
  • the single-layer 802.1Q packet is converted into a double-layer 802.1Q packet.
  • the QinQ packets enter the carrier core network with the C-VLAN and S-VLAN VLAN tags.
  • the carrier core network transparently transmits the inner C-VLAN labels.
  • the PB (Professional Bridge) device transparently transmits QinQ packets, or identifies the S-VLAN label and performs label switching on the S-VLAN label. After the QinQ file reaches the PEB device at the edge of the core network, the PEB device The QinQ 4 text is identified and the S-VLAN label is stripped, and the QinQ text is terminated.
  • the user data packet reaches the PEB device at the edge of the core network.
  • the possible VLAN tag operation mode and the C-VLAN and S-VLAN tag values in different operation modes are:
  • Add a Layer 2 label to the user data packet that does not carry the 802.1Q label add the C-VLAN label and add the S-VLAN label. In this case, you need to specify the C-VLAN label and the S-VLAN label value.
  • the QinQ packet reaches the PEB device at the edge of the core network after the network transmission.
  • the possible VLAN tag operation mode and the C-VLAN and S-VLAN tag values in different operation modes are:
  • the PB device transparently transmits QinQ packets in the core network.
  • the PB device In the intermediate node, in the core network, the PB device identifies the S-VLAN label in the QinQ packet and exchanges the S-VLAN label. In this case, the S-VLAN label value needs to be specified.
  • the VLAN tag operation mode and tag value specified behaviors listed in 1) and 2) above occur on the source node and the sink node of the end-to-end QinQ service, respectively, and 3) and 4
  • the VLAN tag operation mode and tag value specification behavior listed in the figure occur at the end On the intermediate node of the QinQ service.
  • the VLAN tag operation mode of the packets is unique for each node, and the current QinQ needs to be used for each node from several possible VLAN tag operations.
  • the service chooses a VLAN tag operation mode.
  • the label value before the switch (or the label forwarding and the label value before label stripping) in the downstream node can be obtained from the service configuration of the upstream node.
  • the C-VLAN tag and the S-VLAN tag before the switch are the C-VLAN tags and S-VLAN tags in the source node operating the "Add S-VLAN tag after switching C-VLAN tags".
  • the network operator needs to specify a VLAN tag operation mode for all nodes passing through the data packet transmission path. Then, you need to manually enter the C-VALN or S-VLAN label value according to the VLAN tag operation mode. Only then can the end-to-end path of the QinQ service be successfully created.
  • an embodiment of the present invention provides a method for implementing automatic end-to-end QinQ service label distribution, including:
  • VLAN tag value is automatically obtained and populated in the service configuration.
  • the embodiment of the invention further provides a device for realizing end-to-end automatic allocation of QinQ service tags, including:
  • the VLAN tag operation mode collection generating unit is configured to filter the applicable VLAN tag operation mode set according to the VLAN tag operation mode of the upstream node;
  • VLAN tag operation mode selection unit configured to select a VLAN tag operation mode from the VLAN tag operation mode set and send the same
  • the tag value filling unit is configured to automatically obtain the VLAN tag value and fill in the service configuration according to the VLAN tag operation mode of the upstream node and the selected VLAN tag operation mode sent by the VLAN tag operation mode selection unit.
  • the embodiment of the present invention has the following advantages: By analyzing the operation mode of the VLAN tag of the upstream node, filtering out the set of VLAN tag operation modes applicable to the current node, and selecting the VLAN tag operation of the current node in the set. In this manner, the VLAN tag value is automatically obtained and filled according to the labeling manner of the two nodes, which can reduce the high error rate caused by manually selecting the VLAN tag operation mode of the current node in the prior art, and also avoid When the label operation is large, the operation process is more complicated and cumbersome.
  • FIG. 1 is a schematic diagram of a whole process of performing QinQ encapsulation and transmission identification on user data in the prior art
  • FIG. 2 is a flow chart showing a first embodiment of a method for implementing end-to-end automatic allocation of QinQ service tags according to the present invention
  • 3 is a flow chart showing a second embodiment of a method for implementing end-to-end QinQ service tag automatic allocation according to the present invention
  • 4 is a block diagram showing a first embodiment of an apparatus for implementing end-to-end QinQ service tag automatic allocation according to the present invention
  • Figure 5 is a block diagram showing a second embodiment of the apparatus for implementing end-to-end automatic assignment of QinQ service tags of the present invention.
  • VLAN tag operation mode of the source end node and the sink end node is - corresponding, and the corresponding relationship is as follows:
  • FIG. 2 it is a flowchart of a first embodiment of an automatic end-to-end QinQ service tag allocation method according to the present invention, including the steps:
  • the network management system filters out the set of operation modes of the VLAN tag applicable to the current node.
  • the operation mode of the VLAN tag is label switching, label forwarding, and label stripping. In this manner, the VLAN tag operation mode that is not applicable is excluded, so that the VLAN tag operation mode selection can be performed in a relatively small range, the configuration efficiency is improved, and the possibility of label operation error is reduced. If the VLAN tag operation mode is specified incorrectly on the source node or other upstream node, the operation of the VLAN tag automatically filtered by the network management system on the current node is definitely not expected. In this case, the network operator can easily find it.
  • step S202 the step of determining whether the VLAN tag operation mode set is empty may be added. If yes, the upstream node label operation error is displayed. If not, the description is The upstream node label operates correctly, and proceeds to step S202;
  • S202 In the set of operation modes of the VLAN tag, select a VLAN tag operation mode for the current node; the selection mode may be manually selected by the network operator, or may be automatically selected by the network management system according to a preset setting. The selection mode does not exceed the protection scope of the present invention; S203. Automatically obtain the VLAN (C-VLAN/S-VLAN) tag value and fill in the current node service configuration according to the VLAN tag operation mode of the upstream node and the VLAN tag operation mode of the current node. in.
  • C-VLAN/S-VLAN VLAN
  • the system can automatically fill in the current label value according to the upstream node service configuration.
  • the configuration operation is simplified, unnecessary errors are avoided, the configuration efficiency is improved, and the probability of misconfiguration is reduced.
  • the embodiment of the present invention can be implemented as follows: According to the operation mode of the VLAN tag of the upstream node, the network management system automatically filters out a set of possible VLAN tag operation modes of the current node; and the set of operation modes of the VLAN tag can be used by the network management system.
  • the set of VLAN tag operation modes a VLAN tag operation mode is selected for the current node, and a network tag operation mode is manually selected by the network management operator; the tag value is obtained according to the VLAN tag operation mode of the upstream node and the current node, And automatically populated in the current node business configuration.
  • the whole process realizes the automatic generation of the VLAN tag operation mode set, and the operation mode of selecting the current node in the set greatly reduces the manual operation mode from the various possible VLAN tag operation modes.
  • the high error rate is achieved, and the VLAN (C-VLAN/S-VLAN) tag value can be automatically obtained according to the VLAN tag operation mode of the upstream node and the current node and filled in the current node service configuration. It is avoided that the network operator needs to specify a VLAN tag operation mode for each node from multiple possible VLAN tag operation modes, and then manually configure the C-VALN or S-VLAN tag according to the selected VLAN tag operation mode. The value, which brings the cumbersome shortcomings of the operation process.
  • FIG. 3 it is a flowchart of a second embodiment of an automatic end-to-end QinQ service tag allocation method according to the present invention.
  • operation types of source node, intermediate node, and sink node are as follows. The corresponding relationship is shown in the following table.
  • the value is used as the C-VLAN 802.1Q tag on the sink node.
  • the operator manually enters it.
  • Label peel off two layers of labels
  • the system will set the value in the source service configuration and the S-VLAN label. 2) The system will configure the source service.
  • C-VLAN tag value and last hop core network sign value S-VLAN tag value as the current node
  • Tag value and S-VLAN tag value no need to exchange tag values.
  • the network operator manually enters it.
  • S-VLAN label 1 Identify S-VLAN tags and perform 1) Identify different C-VLAN tags, check values; Label exchange; Strip S-VLAN tags;
  • the system will be in the source service configuration 2)
  • the system will be in the source service configuration
  • the S-VLAN tag value is used as the C-VLAN tag value and the previous hop core network on the current node.
  • the value of the pre-switching label of the S-VLAN label, and the label value of the S-VLAN exchanged on the network node The operator only needs to configure the S-VLAN label as the label value of the C-VLAN exchanged on the sink node.
  • Tag value and S-VLAN tag value no need for manual input by the network operator.
  • the S-VLAN tag value is used as the switching C-VLAN label on the sink node.
  • the system will configure the source service configuration value and the S-VLAN label in the source service configuration.
  • the S-VLAN tag value is used as the label value and the previous value of the C-VLAN exchange on the current node.
  • the value of the pre-switching label of the S-VLAN label, and the S-VLAN switching after the network node of the network hopping network only needs to configure the label value of the S-VLAN label as the exchanged label value on the sink node.
  • C-VLAN tag value and S-VLAN tag value no manual input by network operator.
  • the network management system filters out the set of VLAN tag operation modes applicable to the current node.
  • the network management system analyzes the operation mode of the VLAN tag applied to the current node according to the VLAN tag operation mode of the upstream node, and filters out the The applicable VLAN tag operation mode is then displayed to the network operator for selection by the network operator.
  • the network management system can display the operation mode of the VLAN tag to the network operator in a read-only manner or in another manner, and the displayed location can be on the operation interface of the network management system to avoid misoperation. Prompt role.
  • the function of the VLAN tag is label switching, label forwarding, and label stripping. By filtering out the VLAN tag operation mode, the VLAN tag operation mode is not excluded, so that the VLAN tag operation mode can be selected in a relatively small range. , improve configuration efficiency and reduce the possibility of label operation errors;
  • VLAN tag operation mode set select a VLAN tag operation mode for the current node; the selection mode may be manually selected by a network operator, or may be automatically selected by the network management system according to a preset setting. The selection method does not exceed the scope of protection of the present invention
  • the network management system automatically uses the C from the upstream node.
  • the VLAN/S-VLAN tag value is populated into the current node configuration, that is, the VLAN (C-VLAN/S-VLAN) tag value is automatically obtained and populated in the current node service configuration.
  • the system can automatically fill in the current label value according to the upstream node service configuration.
  • the configuration operation is simplified, unnecessary errors are avoided, the configuration efficiency is improved, and the probability of misconfiguration is reduced;
  • the network management system determines whether the current node is a sink node, and if yes, ends the process; otherwise, proceeds to step S302, and continues to filter the new VLAN tag applied by the current node according to the operation mode of the upstream node and the current node VLAN tag by the network management system. Operation mode collection step.
  • the VLAN tag operation mode set of the current node is filtered out by analyzing the operation mode of the VLAN tag of the upstream node, and the VLAN tag operation mode of the current node is selected in the set, and then according to the two nodes
  • the tag mode automatically obtains and fills in the VLAN tag value, which can reduce the high error rate caused by manually selecting the VLAN tag operation mode of the current node in the prior art, and also avoids when the tag operation is large. Operated The process is more complicated and cumbersome.
  • the process of the present invention ends, and if it is not a sink node, the applicable VLAN tag operation mode set is continuously filtered for the current node, and for a core network having a plurality of intermediate nodes, Have a positive meaning.
  • the classification of the so-called source end node and the sink end node is relative, and is classified from the perspective of data flow direction. From the perspective of different data flows, the source node can be a sink node for another data flow.
  • VLAN tag operation mode of the node in the various embodiments of the present invention and the VLAN tag value corresponding to the VLAN tag operation mode of the node may also be recorded in the network management system, or may be dynamically transmitted and queried. Just ensure that the network management system can know the VLAN tag operation mode and tag value of the upstream node.
  • FIG. 4 it is a block diagram of a first embodiment of an apparatus for implementing end-to-end QinQ service tag automatic allocation according to the present invention, including:
  • the VLAN tag operation mode collection generating unit 401 is configured to filter the applicable VLAN tag operation mode set according to the VLAN tag operation mode of the upstream node.
  • the VLAN tag operation mode selection unit 402 is configured to select a VLAN tag operation mode from the VLAN tag operation mode set and send the same.
  • the tag value filling unit 403 is configured to automatically obtain a VLAN (C-VLAN/S-VLAN) tag value and fill it in the service according to the VLAN tag operation mode of the upstream node and the VLAN tag operation mode sent by the VLAN tag operation mode selection unit 402. In the configuration.
  • VLAN C-VLAN/S-VLAN
  • the VLAN tag operation mode set of the current node can be filtered out by analyzing the operation mode of the VLAN tag of the upstream node, and the VLAN tag operation mode of the current node is selected in the set, and then according to the two nodes
  • the tag mode automatically obtains and fills in the VLAN tag value, which can reduce the high error rate caused by manually selecting the VLAN tag operation mode of the current node in the prior art, and also avoids when the tag operation is large.
  • the operation process is more complicated and cumbersome.
  • the device in order to prompt the network operator in the configuration process, the device further includes:
  • a tag value display unit is configured to display the VLAN (C-VLAN/S-VLAN) tag value to a network operator.
  • FIG. 5 it is a block diagram of a second embodiment of the apparatus for realizing end-to-end QinQ service label automatic allocation according to the present invention, which is obtained by adding an information specifying unit based on the above embodiment:
  • the information specifying unit 501 is connected to the VLAN tag operation mode set generating unit 401, and is configured to specify a source end node and a sink end node of the end-to-end QinQ service path, and a VLAN tag operation mode and a VLAN of the source end node (C -VLAN/S-VLAN) tag value.
  • the device further includes a sink node determining unit, which is respectively connected to the VLAN tag operation mode set generating unit 401 and the information specifying unit 501, and is configured to determine whether the device is the information specifying unit 501.
  • the designated sink node if not, the triggered VLAN tag mode set generation unit 401 filters out the new applicable VLAN tag mode set.
  • the device in order to cause a tag operation error in the upstream node, and the current node VLAN tag operation mode set is empty, the device further includes:
  • the upstream node label operation error prompting unit is connected to the VLAN tag operation mode set generating unit 401, and is configured to prompt the upstream node label operation error if the VLAN tag operation mode set is empty.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a A computer device (which may be a personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.

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

Description

一种实现端到端的 QinQ业务标签自动分配的方法和装置 本申请要求于 2007 年 10 月 22 日提交中国专利局、 申请号为 200710167326.3、发明名称为"一种实现端到端的 QinQ业务标签自动分配的方 法和装置"的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及数据传输技术领域, 特别是涉及实现端到端的 QinQ业务标签 自动分配的方法和装置。
背景技术
QinQ ( 802.1Q in 802.1Q, VLAN双堆叠技术)技术是随着 VLAN ( Virtual Local Area Network, 虚拟局域网) 的发展而发展起来的。 VLAN是随着以太 网交换技术的发展而兴起的一种局域网技术。随着以太网技术在运营商网络中 的大量部署(即城域以太网), 利用 802.1Q VLAN对用户进行隔离和标识受到 很大限制, 因为 IEEE802.1Q中定义的 VLAN tag ( VLAN标签)域只有 12个 比特, 仅能表示 4K个 VLAN, 不能满足城域以太网中需要标识大量用户的需 求。
为了能够使 VLAN技术能够在新的网络环境下得到进一步应用, 就要用 VLAN来标识大量用户。于是出现了 QinQ技术, QinQ技术是在原有的 802.1Q 报文的基础上又增加一层 802.1Q标签实现。 由于这种双层堆叠技术的釆用, 相应地使得 VLAN的数量增大而成为 4K*4K。 随着城域以太网的发展以及运 营商精细化运作的要求, QinQ的双层标签又得到了进一步的拓展使用, 可以 使其内外层的标签分别代表不同的信息。用内层标签代表用户, 称为 C-VLAN ( Customer VLAN, 用户 VLAN ); 外层标签代表业务, 称为 S-VLAN ( Service VLAN, 业务 VLAN )。
如图 1所示, 是现有技术中对用户数据进行 QinQ封装并传输识别的全过 程示意图。 用户数据到达核心网边缘的 PEB ( Provide Edge Bridge, 运营商边 缘网桥)设备后, 网络系统对不同的 C-VLAN标签打上不同的外层 S-VLAN 标签或者基于端口, 完成 QinQ封装。 即将单层的 802.1Q报文转换为双层的 802.1Q报文。 QinQ报文带着 C-VLAN和 S-VLAN这两层 VLAN标签进入运 营商核心网络, 运营商核心网络对内层 C- VLAN标签透明传送。 核心网络中 的 PB ( Provide Bridge, 运营商网桥 )设备透传 QinQ报文, 或者识别 S-VLAN 标签并对 S-VLAN标签进行标签交换后传送; 当 QinQ 文到核心网边缘的 PEB设备后, PEB设备对 QinQ 4艮文进行识别并对 S-VLAN标签进行剥离操作, 完成 QinQ 艮文终结。
从开通 QinQ业务角度考虑,此过程中的 VLAN标签操作方式以及不同操 作方式下 C-VLAN和 S-VLAN标签取值情况如下:
1 )在源端节点,用户数据报文到达核心网边缘的 PEB设备,可能的 VLAN 标签操作方式以及不同操作方式下 C-VLAN和 S-VLAN标签取值是:
识别不同 C-VLAN标签, 添加 S-VLAN标签, 此时需要指定 S-VLAN标 签值;
识别不同 C-VLAN标签, 交换 C-VLAN标签后添加 S-VLAN标签, 此时 需要指定 C-VLAN标签和 S-VLAN标签值;
对未携带 802.1Q标签的用户数据报文添加两层标签, 添加 C-VLAN标签 后, 再添加 S-VLAN标签, 此时需要指定 C-VLAN标签和 S-VLAN标签值。
2 )在宿端节点, QinQ报文经网络传输后到达核心网边缘的 PEB设备, 可能的 VLAN标签操作方式以及不同操作方式下 C-VLAN和 S-VLAN标签取 值是:
识别不同 C-VLAN标签, 剥离 S-VLAN标签, 此时需要指定 S-VLAN标 签值;
识别不同 C-VLAN标签, 交换 C-VLAN标签后剥离 S-VLAN标签, 此时 需要指定 C-VLAN标签和 S-VLAN标签值;
识别 QinQ ^艮文中的双层标签, 剥离 C-VLAN标签和 S-VLAN标签, 此 时需要指定 C-VLAN标签和 S-VLAN标签值。
3 )在中间节点, 在核心网络中, PB设备透传 QinQ报文。
4 )在中间节点, 在核心网络中, PB设备识别 QinQ报文中的 S- VLAN标 签, 进行 S-VLAN标签的交换, 此时需要指定 S-VLAN标签值。
从端到端的 QinQ业务需求分析, 上面 1 )和 2 ) 中列举的 VLAN标签操 作方式和标签值指定行为分别发生在端到端 QinQ业务的源端节点、 宿端节点 上, 而 3 )和 4 ) 中列举的 VLAN标签操作方式和标签值指定行为则发生在端 到端 QinQ业务的中间节点上。 但对于一条端到端的 QinQ业务, 在其经过所 有节点上, 各个节点对报文的 VLAN标签操作方式是唯一的, 需要为每个节 点从几种可能的 VLAN标签操作方式中,为当前的 QinQ业务选择一种 VLAN 标签操作方式。
另外,对于中间节点和宿端节点, 如果在当前节点上需要进行标签交换操 作 (或者标签转发、 标签剥离操作), 则需要指定交换前后的标签值(或者标 签转发、标签剥离前后的标签值), 比如在 "交换 C- VLAN标签后剥离 S-VLAN 标签"操作中, 需要指定:
C-VLAN标签交换前的 C-VLAN标签值和交换后的 C-VLAN标签值; 需 要剥离的 S- VLAN的标签值。
事实上, 在一条端到端 QinQ业务中, 下游节点中的交换前的标签值(或 者标签转发、标签剥离前的标签值)都是可以从上游节点的业务配置中获取的。 比如此时的 C-VLAN标签和交换前的 S-VLAN标签就是源端节点操作"交换 C-VLAN标签后添加 S-VLAN标签"中的 C-VLAN标签和 S-VLAN标签。
在现有技术中, 在 QinQ业务端到端路径创建过程中, 网络操作员对数据 报文传输路径上所经过的所有节点, 都需要指定一个 VLAN标签操作方式。 然后, 还需要再根据所述 VLAN 标签操作方式, 再手工输入 C-VALN 或 S-VLAN标签值, 只有这样, 才能成功完成 QinQ业务端到端路径的创建。
现有技术的缺点在于: 由于对数据报文传输路径上的所经过的每一个节 点, 都需要网络操作员人工为每个节点从多种可能的 VLAN标签操作方式中 指定一种 VLAN标签操作方式、 并配置 C-VALN或 S-VLAN的标签值。 这样 一来人工操作的方式比较麻烦, 二来也容易出错。 在釆用这种人工选择、 指定 标签操作的过程中, 针对某一个节点, 只要网络操作员出现一个操作错误, 根 据现有的业务传输方式,只能在所有节点业务配置完毕之后才发现端到端业务 不通, 才知道 VLAN标签操作失误。 此时, 只有逐个节点进行配置数据检查, 才能确定出现错误的节点。
发明内容
本发明一个或多个实施例的目的在于提供一种实现端到端的 QinQ业务标 签自动分配的方法和装置。 为解决上述问题, 本发明实施例提供了一种实现端到端的 QinQ业务标签 自动分配的方法, 包括:
根据上游节点的 VLAN标签操作方式过滤出适用的 VLAN标签操作方式 从所述 VLAN标签操作方式集合中选择一种 VLAN标签操作方式; 根据所述上游节点的 VLAN标签操作方式和所述选择的 VLAN标签操作 方式, 自动获取 VLAN标签值并填充在业务配置中。
本发明实施例还提供了一种实现端到端的 QinQ 业务标签自动分配的装 置, 包括:
VLAN标签操作方式集合生成单元, 用于根据上游节点的 VLAN标签操 作方式过滤出适用的 VLAN标签操作方式集合;
VLAN标签操作方式选择单元, 用于从所述 VLAN标签操作方式集合中 选择一种 VLAN标签操作方式并发送;
标签值填充单元, 用于根据所述上游节点的 VLAN标签操作方式和所述 VLAN标签操作方式选择单元发送的所述选择的 VLAN标签操作方式, 自动 获取 VLAN标签值并填充在业务配置中。
与现有技术相比,本发明实施例具有以下优点: 通过对上游节点的 VLAN 标签操作方式的分析, 过滤出当前节点适用的 VLAN标签操作方式集合, 在 此集合中选择当前节点的 VLAN标签操作方式, 再根据此两节点的标签方式 自动获取 VLAN标签值并填充, 能够降低由于现有技术中由人工来选择当前 节点的 VLAN标签操作方式所带来的错误率高的不足, 而且, 也避免了在标 签操作多的时候, 操作过程更加复杂烦瑣的问题。
附图说明
图 1所示是现有技术中对用户数据进行 QinQ封装并传输识别的全过程示 意图;
图 2所示是本发明的实现端到端的 QinQ业务标签自动分配的方法的第一 个实施例的流程图;
图 3所示是本发明的实现端到端的 QinQ业务标签自动分配的方法的第二 个实施例的流程图; 图 4所示是本发明的实现端到端的 QinQ业务标签自动分配的装置的第一 个实施例的框图;
图 5所示是本发明的实现端到端的 QinQ业务标签自动分配的装置的第二 个实施例的框图。
具体实施方式
下面结合附图对本发明实施例的具体实施方式做进一步的详细阐述。 在本发明的各个实施例中, 源端节点、 宿端节点的 VLAN标签操作方式 是——对应的, 其对应关系如下表所示:
Figure imgf000007_0001
如图 2所示, 是本发明的实现端到端的 QinQ业务标签自动分配方法的第 一个实施例的流程图, 包括步骤:
S201、 根据上游节点的 VLAN标签操作方式, 由网管系统过滤出当前节 点适用的 VLAN标签操作方式集合; VLAN标签的操作方式有标签交换、 标 签转发和标签剥离, 通过过滤出 VLAN标签操作方式集合的方式, 将不适用 的 VLAN标签操作方式排除, 使得能够在比较小的范围内进行 VLAN标签操 作方式选择, 提高了配置效率, 减小了标签操作出错的可能性。 如果在源端节 点或其它上游节点上, VLAN标签操作方式指定有误, 网管系统在当前节点上 自动过滤出来的 VLAN标签操作方式肯定不是预期的, 这种情况下, 网络操 作员就很容易发现错误; 因为各个节点的操作方式是存在着对应关系的, 只要 上游节点进行的操作方式不对, 就会发现错误, 有利于及时纠正。 在过滤生成 所述 VLAN标签操作方式集合之后, 可以增加判断所述 VLAN标签操作方式 集合是否为空的步骤, 如果是, 则提示上游节点标签操作错误, 如果否, 说明 上游节点标签操作正确, 进入步骤 S202;
S202、 在所述 VLAN标签操作方式集合中, 为当前节点选择一种 VLAN 标签操作方式; 这种选择方式可以由网络操作员人工选择,也可以由网管系统 自动按照预先的设置进行选择, 这种选择方式没有超出本发明的保护范围; S203、 根据上游节点的 VLAN标签操作方式和当前节点的 VLAN标签操 作方式, 自动获取 VLAN ( C-VLAN/S-VLAN )标签值并填充在当前节点业务 配置中。 对于当前节点中的标签操作前的标签值(如标签交换前的标签值、 标 签转发前的标签值或标签剥离前的标签值 ), 系统可根据上游节点业务配置中 的标签值自动填充在当前节点配置中,简化了配置操作,避免了不必要的错误, 提高了配置效率, 降低了错误配置的概率。
通过本发明的实施例, 能够实现: 根据上游节点的 VLAN标签操作方式, 由网管系统自动过滤出当前节点可能的 VLAN标签操作方式集合; 利用所述 VLAN标签操作方式集合, 可以由网管系统从所述 VLAN标签操作方式集合 中, 为当前节点选择一种 VLAN标签操作方式, 也可以由网管操作人人工选 择一种 VLAN标签操作方式; 根据上游节点和当前节点的 VLAN标签操作方 式就获得标签值, 并自动填充在当前节点业务配置中。整个过程相比较于现有 技术, 实现了自动生成 VLAN标签操作方式集合, 在集合中选择当前节点的 操作方式大大降低了因釆用人工方式直接从各种可能的 VLAN标签操作方式 中筛选操作方式而导致的高错误率,同时实现了可以根据上游节点和当前节点 的 VLAN标签操作方式自动获取 VLAN ( C-VLAN/S-VLAN )标签值并填充在 当前节点业务配置中。 避免了需要网络操作员先为每个节点从多种可能的 VLAN标签操作方式中指定一种 VLAN标签操作方式, 然后再根据选择后的 VLAN标签操作方式, 手工配置 C-VALN或 S-VLAN标签值, 而带来的操作 过程烦瑣的缺点。 而且, 由于对每一个节点都需要根据当前节点的要求重复人 工选择过程, 在节点比较多的情况下, 选择 VLAN标签操作方式以及配置标 签交换、转发以及标签剥离操作的情况就会比较多,如果这些操作全都依靠网 络操作员人工进行, 出错的概率会比较大。更进一步,如果出现错误操作以后, 只有在所有节点业务配置完毕之后才发现业务不通, 才能够知道配置错误, 此 时只有逐个节点进行配置数据检查才能确定出现错误的节点。 如图 3所示, 是本发明的实现端到端的 QinQ业务标签自动分配方法的第 二个实施例的流程图, 在本实施例中, 源端节点、 中间节点和宿端节点的操作 类型及其对应关系如下表所示。
源端节点 路径中间节点 (核心网节点) 宿端节点
1 )识别 QinQ ·ί艮文中的双层 标签, 剥离两层标签;
2 ) 系统将源端业务配置中的
1 )透传 QinQ报文;
C-VLAN标签值和 S-VLAN标签
1 )对未携带 2 )无须指定标签值;
值作为宿端节点上的 C-VLAN标 802.1Q标签的用
签值和 S-VLAN标签值; 无须网 户数据 4艮文添加
络操作员手工输入。
两层标签;
1 )识别 QinQ ·ί艮文中的双层
2 )需手工配 1 )识别 S-VLAN标签并进行
标签, 剥离两层标签;
置 C-VLAN标签 标签交换;
2 ) 系统将源端业务配置中的 值和 S-VLAN标 2 ) 系统将源端业务配置中的
C-VLAN标签值和上一跳核心网 签值; S-VLAN 标签值作为当前节点上
节点上 S-VLAN交换后的标签值 S-VLAN标签的交换前标签值, 网
分别作为宿端节点上的 C-VLAN 络操作员只需配置 S-VLAN标签
标签值和 S-VLAN标签值; 无须 交换后的标签值即可。
网络操作员手工输入。
1 )识别不同 C-VLAN标签,
1 )识别不同 剥离 S-VLAN标签;
C-VLAN 标签, 2 ) 系统将源端业务配置中的
1 )透传 QinQ报文;
添加 S-VLAN标 C-VLAN标签值和 S-VLAN标签
2 )无须指定标签值;
金, 值作为宿端节点上的 C-VLAN标
2 )需手工配 签值和 S-VLAN标签值; 无须网 置 C-VLAN标签 络操作员手工输入。
值和 S-VLAN标 1 )识别 S-VLAN标签并进行 1 )识别不同 C-VLAN标签, 签值; 标签交换; 剥离 S-VLAN标签;
2 ) 系统将源端业务配置中的 2 ) 系统将源端业务配置中的 S-VLAN 标签值作为当前节点上 C-VLAN标签值和上一跳核心网
S- VLAN标签的交换前标签值, 网 节点上 S-VLAN交换后的标签值 络操作员只需配置 S-VLAN标签 分别作为宿端节点上的 C-VLAN 交换后的标签值即可。 标签值和 S-VLAN标签值; 无须 网络操作员手工输入。
1 )识别不同 C-VLAN标签, 交换 C-VLAN 标签后再剥离 S-VLAN标签
1 )透传 QinQ报文; 2 ) 系统将源端业务配置中的
1 )识别不同
2 )无须指定标签值; 交换后的 C-VLAN 标签值和 C-VLAN 标签,
S-VLAN 标签值作为宿端节点上 交换 C-VLAN标
的 C-VLAN标签值和 S-VLAN标 签 后 再 添 加
签值; 无须网络操作员手工输入。 S-VLAN标签;
1 )识别不同 C-VLAN标签,
2 )需手工配
1 )识别 S-VLAN标签并进行 交换 C-VLAN 标签后再剥离 置 C-VLAN标签
标签交换; S-VLAN标签 交换前后的标签
2 ) 系统将源端业务配置中的 2 ) 系统将源端业务配置中的 值和 S-VLAN标
S-VLAN 标签值作为当前节点上 C-VLAN 交换后的标签值和上一 签值;
S- VLAN标签的交换前标签值, 网 跳核心网节点上 S-VLAN交换后 络操作员只需配置 S-VLAN标签 的标签值作为宿端节点上的 交换后的标签值即可。 C-VLAN标签值和 S-VLAN标签 值; 无须网络操作员手工输入。 在上表所示的各个节点操作类型对应关系的基础上,以如下步骤来说明本 发明的方法的第二个实施例:
S301、 指定端到端 QinQ业务路径源端节点、 宿端节点, 以及源端节点的 VLAN标签操作方式以及 VLAN ( C-VLAN/S-VLAN )标签值; 指定端到端 QinQ业务路径源端节点、 宿端节点规定了数据报文在网络中的传输路径, 源 端节点 VLAN标签操作方式和 VLAN ( C-VLAN/S-VLAN )标签值都需要事先 指定; 5302、 根据上游节点的 VLAN标签操作方式, 由网管系统过滤出当前节 点适用的 VLAN标签操作方式集合; 网管系统根据上游节点的 VLAN标签操 作方式, 分析当前节点适用的 VLAN标签操作方式, 过滤掉不适用的 VLAN 标签操作方式, 然后显示给网络操作员, 供网络操作员选择。 网管系统可以以 只读方式, 也可以以其它方式, 显示给网络操作员将所述 VLAN标签操作方 式显示给网络操作员,显示的位置可以是网管系统操作界面上,避免其误操作, 以达到提示作用。 VLAN标签的操作方式有标签交换、 标签转发和标签剥离, 通过过滤出 VLAN标签操作方式集合的方式, 将不适用的 VLAN标签操作方 式排除, 使得能够在比较小的范围内进行 VLAN标签操作方式选择, 提高了 配置效率, 减小了标签操作出错的可能性;
5303、 在所述 VLAN标签操作方式集合中, 为当前节点选择一种 VLAN 标签操作方式; 这种选择方式可以由网络操作员人工选择,也可以由网管系统 自动按照预先的设置进行选择, 这种选择方式没有超出本发明的保护范围;
5304、 根据上游节点和当前节点的 VLAN标签操作方式, 以及上游节点 配置中的 C-VLAN/S-VLAN标签值, 按照在上表中表示的对应关系, 网管系 统自动将从上游节点使用的 C-VLAN/S-VLAN标签值填充到当前节点的配置 中, 也就是自动获取 VLAN ( C-VLAN/S-VLAN )标签值并填充在当前节点业 务配置中。 对于当前节点中的标签操作前的标签值(如标签交换前的标签值、 标签转发前的标签值或标签剥离前的标签值), 系统可根据上游节点业务配置 中的标签值自动填充在当前节点配置中, 简化了配置操作,避免了不必要的错 误, 提高了配置效率, 降低了错误配置的概率;
5305、 网管系统判断当前节点是否为宿端节点,如果是,结束流程; 否则, 进入步骤 S302, 继续由网管系统按照上游节点和当前节点 VLAN标签操作方 式、 过滤出当前节点适用的新的 VLAN标签操作方式集合步骤。
利用本发明的实施例, 通过对上游节点的 VLAN标签操作方式的分析, 过滤出当前节点适用的 VLAN标签操作方式集合, 在此集合中选择当前节点 的 VLAN标签操作方式, 再根据此两节点的标签方式自动获取 VLAN标签值 并填充, 能够降低由于现有技术中由人工来选择当前节点的 VLAN标签操作 方式所带来的错误率高的不足, 而且, 也避免了在标签操作多的时候, 操作过 程更加复杂烦瑣的问题。 而且, 在当前节点是宿端节点时, 结束本发明的处理 过程, 如果不是宿端节点, 则继续为当前节点过滤出适用的 VLAN标签操作 方式集合, 对于拥有众多中间节点的核心网络而言, 具备积极的意义。
需要说明的是, 对于所属领域的技术人员而言, 在本发明的应用过程中, 所谓的源端节点与宿端节点的分类是相对的, 是从数据流向的角度来分类的。 从不同的数据流向角度看, 源端节点可以是另一个数据流向的宿端节点。
其中, 在本发明的各个实施例中的所述节点的 VLAN标签操作方式以及 与所述节点的 VLAN标签操作方式对应的 VLAN标签值还可以记录在网管系 统中, 也可以动态传输查询等方式, 只要保证网管系统能够知道上游节点的 VLAN标签操作方式以及标签值即可。
如图 4所示, 是本发明的实现端到端的 QinQ业务标签自动分配的装置的 第一个实施例的框图, 包括:
VLAN标签操作方式集合生成单元 401 ,用于根据上游节点的 VLAN标签 操作方式过滤出适用的 VLAN标签操作方式集合;
VLAN标签操作方式选择单元 402,用于从所述 VLAN标签操作方式集合 中选择一种 VLAN标签操作方式并发送;
标签值填充单元 403 ,用于:根据上游节点的 VLAN标签操作方式和 VLAN 标签操作方式选择单元 402发送的 VLAN标签操作方式, 自动获取 VLAN ( C-VLAN/S-VLAN )标签值并填充在业务配置中。
利用本发明的装置, 能够通过对上游节点的 VLAN标签操作方式的分析, 过滤出当前节点适用的 VLAN标签操作方式集合, 在此集合中选择当前节点 的 VLAN标签操作方式, 再根据此两节点的标签方式自动获取 VLAN标签值 并填充, 能够降低由于现有技术中由人工来选择当前节点的 VLAN标签操作 方式所带来的错误率高的不足, 而且, 也避免了在标签操作多的时候, 操作过 程更加复杂烦瑣的问题。
其中, 在上述实施例的基础上, 为了在配置过程中提示网络操作员, 所述 装置还包括:
标签值显示单元, 用于将所述 VLAN ( C-VLAN/S-VLAN )标签值显示给 网络操作员。 其中, 如图 5所示, 是本发明的实现端到端的 QinQ业务标签自动分配的 装置的第二个实施例的框图,是在上述实施例的基础上, 增加了信息指定单元 而得到的:
信息指定单元 501 ,与所述 VLAN标签操作方式集合生成单元 401相连接, 用于指定端到端的 QinQ 业务路径的源端节点和宿端节点, 以及源端节点的 VLAN标签操作方式和 VLAN ( C-VLAN/S-VLAN )标签值。
其中, 在上述实施例的基础上, 该装置还包括宿端节点判断单元, 其分别 与 VLAN标签操作方式集合生成单元 401和信息指定单元 501相连接, 用于 判断本装置是否是信息指定单元 501指定的宿端节点; 若不是, 则触发 VLAN 标签操作方式集合生成单元 401过滤出新的适用的 VLAN标签操作方式集合。
其中, 在上述实施例的基础上, 为了在上游节点出现标签操作错误, 而导 致当前节点 VLAN标签操作方式集合为空, 所述装置还包括:
上游节点标签操作错误提示单元, 与所述 VLAN标签操作方式集合生成 单元 401相连接, 用于如果所述 VLAN标签操作方式集合为空, 则提示上游 节点标签操作错误。
上述装置内的各单元之间的信息交互、执行过程等内容, 由于与本发明方 法实施例基于同一构思, 具体内容可参见本发明方法实施例中的叙述, 此处不 再赘述。
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到本发 明可借助软件加必需的通用硬件平台的方式来实现, 当然也可以通过硬件,但 很多情况下前者是更佳的实施方式。基于这样的理解, 本发明的技术方案本质 上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算 机软件产品存储在一个存储介质中, 包括若干指令用以使得一台计算机设备 (可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述 的方法。
以上所述的本发明实施方式, 并不构成对本发明保护范围的限定。任何在 本发明原则之内所作的修改、等同替换和改进等, 均应包含在本发明的保护范 围之内。

Claims

权 利 要 求
1、 一种实现端到端的 QinQ业务标签自动分配的方法, 其特征在于, 包 括:
根据上游节点的 VLAN标签操作方式过滤出适用的 VLAN标签操作方式 从所述 VLAN标签操作方式集合中选择一种 VLAN标签操作方式; 根据所述上游节点的 VLAN标签操作方式和所述选择的 VLAN标签操作 方式, 自动获取 VLAN标签值并填充在业务配置中。
2、 如权利要求 1所述的实现端到端的 QinQ业务标签自动分配的方法, 其特征在于, 在所述自动获取 VLAN标签值并填充在业务配置中步骤之后, 还包括:
将所述 VLAN标签值显示给网络操作员。
3、 如权利要求 2所述的实现端到端的 QinQ业务标签自动分配的方法, 其特征在于, 将所述 VLAN标签值显示给网络操作员具体为:
以只读方式将所述 VLAN标签值显示在网管系统操作界面上。
4、 如权利要求 1所述的实现端到端的 QinQ业务标签自动分配的方法, 其特征在于,在所述根据上游节点的 VLAN标签操作方式过滤出适用的 VLAN 标签操作方式集合步骤之前, 还包括:
指定所述端到端的 QinQ业务路径的源端节点和宿端节点、 以及所述源端 节点的 VLAN标签操作方式和 VLAN标签值。
5、 如权利要求 4所述的实现端到端的 QinQ业务标签自动分配的方法, 其特征在于, 在所述自动获取对应的 VLAN标签值并填充在业务配置中步骤 之后, 还包括:
若执行所述过滤步骤的节点不是宿端节点, 则继续根据所述上游节点的 VLAN标签操作方式过滤出新的适用的 VLAN标签操作方式集合。
6、 如权利要求 1所述的实现端到端的 QinQ业务标签自动分配的方法, 其特征在于, 所述从所述 VLAN标签操作方式集合中选择一种 VLAN标签操 作方式具体为:
由网络操作员人工从所述 VLAN标签操作方式集合中选择一种 VLAN标 签操作方式; 或
由网管系统自动从所述 VLAN标签操作方式集合中选择一种 VLAN标签 操作方式。
7、 如权利要求 1所述的实现端到端的 QinQ业务标签自动分配的方法, 其特征在于, 若所述 VLAN标签操作方式集合为空, 则提示上游节点标签操 作错误。
8、 如权利要求 1所述的实现端到端的 QinQ业务标签自动分配的方法, 其特征在于, 所述上游节点的 VLAN标签操作方式、 所述选择的 VLAN标签 操作方式及所述 VLAN标签值被记录在网管系统中。
9、 一种实现端到端的 QinQ业务标签自动分配的装置, 其特征在于, 包 括:
VLAN标签操作方式集合生成单元, 用于根据上游节点的 VLAN标签操 作方式过滤出适用的 VLAN标签操作方式集合;
VLAN标签操作方式选择单元, 用于从所述 VLAN标签操作方式集合中 选择一种 VLAN标签操作方式并发送;
标签值填充单元, 用于根据所述上游节点的 VLAN标签操作方式和所述 VLAN标签操作方式选择单元发送的所述选择的 VLAN标签操作方式, 自动 获取 VLAN标签值并填充在业务配置中。
10、 如权利要求 9所述的实现端到端的 QinQ业务标签自动分配的装置, 其特征在于, 还包括:
标签值显示单元, 用于将所述 VLAN标签值显示给网络操作员。
11、 如权利要求 9所述的实现端到端的 QinQ业务标签自动分配的装置, 其特征在于, 还包括:
信息指定单元, 与所述 VLAN标签操作方式集合生成单元相连接, 用于 指定所述端到端的 QinQ业务路径的源端节点和宿端节点、 以及所述源端节点 的 VLAN标签操作方式和 VLAN标签值。
12、 如权利要求 9所述的实现端到端的 QinQ业务标签自动分配的装置, 其特征在于, 还包括:
上游节点标签操作错误提示单元与所述 VLAN标签操作方式集合生成单 元相连接, 用于若所述 VLAN标签操作方式集合为空, 则提示上游节点标签 操作错误。
PCT/CN2008/072780 2007-10-22 2008-10-22 A METHOD AND DEVICE FOR REALIZING AUTOMATICAL DISTRIBUTION OF QinQ BUSINESS LABEL TERMINAL TO TERMINAL Ceased WO2009056039A1 (en)

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