WO2012145886A1 - 一种基于标签的测量方法，装置和*** - Google Patents

一种基于标签的测量方法，装置和*** Download PDF

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Publication number
WO2012145886A1
WO2012145886A1 PCT/CN2011/073241 CN2011073241W WO2012145886A1 WO 2012145886 A1 WO2012145886 A1 WO 2012145886A1 CN 2011073241 W CN2011073241 W CN 2011073241W WO 2012145886 A1 WO2012145886 A1 WO 2012145886A1
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Prior art keywords
label
data packet
insertion mode
data
network
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Application number
PCT/CN2011/073241
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English (en)
French (fr)
Inventor
郑莲淑
陈国义
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180000223.2A priority Critical patent/CN103053133B/zh
Priority to PCT/CN2011/073241 priority patent/WO2012145886A1/zh
Priority to EP11864328.7A priority patent/EP2685667B1/en
Publication of WO2012145886A1 publication Critical patent/WO2012145886A1/zh
Priority to US14/055,164 priority patent/US9584396B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0876—Network utilisation, e.g. volume of load or congestion level
    • H04L43/0888—Throughput
    • 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
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]

Definitions

  • the present invention relates to the field of network communications, and in particular, to a tag-based measurement method, apparatus and system. Background technique
  • MPLS Multi-Protocol Label Switching
  • L3VPN Layer 3 Virtual Private Network
  • MPLS OAM Opera, Administration
  • Maintenance, operation, management and maintenance are also relatively weak.
  • the measurement techniques for indicators such as packet loss and delay in MPLS networks that reflect network performance need to be further studied.
  • the FEC (Forwarding Equivalence Class) indicates a group of data packets with similar or identical forwarding characteristics in the MPLS network. Data packets belonging to the same FEC are assigned with certain MPLS labels at different network nodes. A label is a fixed-length identifier. The label is usually located between the data link layer encapsulation header and the Layer 3 data packet. The FEC is bound to the label, and the data packet is forwarded according to the label. Data packets belonging to the same FEC pass through the same LSP ( Label Switched Path).
  • LSP Label Switched Path
  • an MPLS network node is formed by an LSR (Label Switching Router) to provide label switching and label distribution.
  • the embodiment of the present invention provides a label-based measurement method, device, and system, which solves the problem that the performance of the network bandwidth is occupied by the insertion of the test packet and the OAM packet in the prior art, and the measurement result is not caused when the OAM packet is lost. The exact problem.
  • an embodiment of the present invention provides a label-based measurement method, including:
  • the embodiment of the invention provides a label-based measuring device, comprising:
  • a label allocation module configured to allocate at least two labels for the same forwarding equivalence class FEC; and an acquiring module, configured to acquire a label insertion mode of the at least two labels;
  • a receiving module configured to receive a data packet, where one of the at least two labels is inserted into the data packet
  • a measuring module configured to perform, according to the label insertion mode and the data packet
  • the network through which the FEC passes performs performance measurements.
  • An embodiment of the present invention provides a label-based measurement system, where the system includes a first network device and a second network device, where:
  • the first network device is configured to receive, by the second network device, at least two tags allocated by the same forwarding equivalence class FEC, and insert one of the at least two tags in the data packet according to the tag insertion mode.
  • the second network device is configured to allocate the at least two labels, obtain the label insertion mode, receive the data packet, and pass the FEC according to the label insertion mode and the data packet.
  • the network performs performance measurements.
  • FIG. 1 is a flow chart of a tag-based measurement method according to an embodiment of the present invention
  • FIG. 2 is a block diagram of a tag-based measurement device according to an embodiment of the present invention
  • FIG. 3 is a tag based on an embodiment of the present invention.
  • the measurement system block diagram The measurement system block diagram. detailed description
  • An embodiment of the present invention provides a label-based measurement method, including: allocating at least two labels for the same forwarding equivalence class FEC; acquiring a label insertion mode of the at least two labels And receiving a data packet, wherein the data packet is inserted with one of the at least two labels; and performing performance measurement on the network through which the FEC passes according to the label insertion mode and the data packet.
  • the technical solution provided by the embodiment of the present invention can solve the problem that the network bandwidth is occupied by the performance measurement by inserting the test packet and the OAM packet, and the measurement result is inaccurate when the 0 AM packet is lost.
  • FIG. 1 is a flow chart of a label-based measurement method according to an embodiment of the present invention, where the label-based measurement method includes:
  • the receiver allocates at least two tags for the same forwarding equivalence class FEC, and notifies the sender of at least two tags corresponding to the FEC.
  • the FEC may be a set of data having the same or similar forwarding characteristics between two MPLS network devices.
  • the receiver acquires the tag insertion mode of the at least two tags from the sender.
  • the tag insertion mode includes:
  • the at least two tags are alternately inserted in the data message according to the quantity rule.
  • the first tag and the second tag are alternately inserted in the data message according to the number rule.
  • every 50 data messages are alternately inserted into the first tag and the second tag, that is, the first to the 50th data messages are inserted into the first tag, and the 51st to the 100th data messages are inserted into the second tag, the first 101 - 150 data messages are inserted into the first tag, then 50 data messages are inserted into the second tag, and so on.
  • the first to the 50th data message are inserted into the first label, and the 51st to 90th data messages are inserted into the second Label, then 50 data messages are inserted into the first tag, then 40 data messages are inserted into the second tag, and so on.
  • a plurality of labels such as a first label, a second label, and a third label, in the data message according to the quantity rule. For example, if the first tag, the second tag, and the third tag are alternately inserted into every 50 data packets, the first to the 50th data files are inserted into the first tag, and the 51st to 100th data messages are inserted into the second tag. The 101st - 150th data message is inserted into the third tag, then the 50th data message is inserted into the first tag, and so on.
  • the first tag and the second tag are alternately inserted in the data message according to the time rule.
  • the first label is inserted into the data text, and after a time interval, the second label is inserted into the data text, and after a time interval, the first label is inserted into the data, and so on; or The first label is inserted into the data packet.
  • the second label is inserted into the data packet.
  • the first label is inserted into the data packet, and then the first time is passed.
  • the second tag is inserted in the data packet, and so on.
  • a plurality of tags such as a first tag, a second tag, and a third tag, in a data message according to a time rule.
  • the inserting the at least two tags in the data message according to the quantity rule may alternately insert the at least two in the data message according to the time rule.
  • Tags are related to each other.
  • the time rule of the sender sending the data packet may be a default time rule of the sender and the receiver, or may be obtained by the receiver from the sender, or may be learned by the receiver through a third party, such as the network administrator. The time rule.
  • the acquired label insertion mode is according to the quantity rule
  • every 50 data messages are alternately inserted into the first label and the second label, and the sender sends a data message every 0.2 ms according to the time rule
  • the first label and the second label are also alternately inserted according to the time rule, that is, the first label and the first part are alternately inserted in the data text every 10 ms.
  • Two labels If the acquired label insertion mode is in accordance with the time rule, the first label and the second label are alternately inserted in the data message every 20 ms, and the sender sends a data message every 0.2 ms according to the time rule, which can be considered as the quantity.
  • the first label and the second label are alternately inserted, that is, the first label and the second label are alternately inserted every 100 data messages.
  • the sender Before sending the data packet, the sender inserts one of the at least two tags in the MPLS packet header according to the label insertion mode, and the receiver receives the data packet.
  • the performance measures include, but are not limited to, network performance indicators such as packet loss rate, transmission delay, throughput, and delay jitter.
  • the quantity rule of the data packet is counted according to the label insertion mode and the statistics.
  • the quantity rule of the data packet performs performance measurement on the network through which the FEC passes, for example, calculating a packet loss rate.
  • the tag insertion mode is that the first tag and the second tag are alternately inserted every 50 data packets, and the received data message is as follows: 50 data messages inserted with the first tag, 48 inserted The data message of the second tag, 45 data messages inserted with the first tag, 47 data messages inserted with the second tag, 47 data messages inserted with the first tag, 49 inserted the first
  • the time rule of the data message is counted, for example, when the received number is According to the label inserted in the message, when the two labels are alternated between the two labels, the time stamp is collected or the system time of the device is collected, and the time rule of the data packet is counted according to the label insertion mode. And performing statistical measurement on the time of the data packet obtained by the FEC, for example, a transmission delay.
  • the tag insertion mode is that the first tag and the second tag are alternately inserted in the data packet every 10 ms, and when the data packet is received:
  • the timestamp T1 is extracted.
  • a plurality of data packets in which the first tag is inserted are continuously received.
  • the timestamp is extracted as Tl+l lms, and then multiple consecutive insertions are received.
  • the timestamp T1+20.5ms is extracted, and then a plurality of data packets inserted with the first label are continuously received.
  • the timestamp is extracted as Tl+32ms, and then multiple data packets inserted with the second label are continuously received, and then the first label is inserted again.
  • the specific calculation performance indicator may be processed locally, or the collected data may be sent to the sender for processing, and the collected data and the label insertion mode may be sent to the network management device for processing by the network management device.
  • the at least two labels may be external labels and participate in public network label forwarding.
  • the network device queries the label forwarding table according to the outer label. For any network device in the public network, the corresponding forwarding action is the same for each of the labels corresponding to the same FEC in the label forwarding table, and the next hop is the same.
  • the at least two labels may also be internal label, and do not participate in public network label forwarding.
  • the data packets are forwarded according to the outer label in the public network, and the network device in the public network will be in the public network.
  • the layer label is transmitted as a data part.
  • a VPN scenario when a data packet arrives at a network device on the edge of the public network, such as a Provider Edge (PE) device, the outer label is ejected, and the label forwarding table is queried according to the inner label.
  • the corresponding forwarding action is the same for each of the at least two tags, that is, the data packet is forwarded to the same next hop, such as a CE (Customer Edge) device.
  • a non-VPN MPLS network scenario when the data reaches the last hop MPLS network device, the outer label is popped up, and the inner label is popped up.
  • the at least two labels that are the inner label are only used for network performance. measuring.
  • the MPLS network performance measurement is performed by inserting at least two labels in the data packet, and the network bandwidth and the OAM packet are occupied by performing performance measurement by inserting the test packet and the OAM packet. Loss of measurement results in inaccurate measurement results.
  • Example 2
  • FIG. 2 it is a block diagram of a tag-based measurement device according to an embodiment of the present invention.
  • the device includes a tag distribution module 201, an acquisition module 202, a receiving module 203, and a measurement module 204, where:
  • the label distribution module 201 is configured to allocate at least two labels for the same forwarding equivalence class FEC;
  • the FEC may be a group of data packets having the same or similar forwarding characteristics between two MPLS network devices.
  • the obtaining module 202 is configured to acquire a label insertion mode of the at least two labels.
  • the acquiring module 202 is configured to acquire, from a sender, a label insertion mode of the at least two labels.
  • the tag insertion mode includes:
  • the at least two tags are alternately inserted in the data message according to the quantity rule.
  • press The first label and the second label are alternately inserted in the data message according to the quantity rule. For example, every
  • 50 data messages are alternately inserted into the first tag and the second tag, that is, the first to the 50th data messages are inserted into the first tag, and the 51st to the 100th data messages are inserted into the second tag, and the first to fifth data messages are inserted into the second tag.
  • the first tag is inserted, then the 50 data messages are inserted into the second tag, and so on.
  • the first to the 50th data message are inserted into the first label
  • the 51st to 90th data messages are inserted into the second label
  • 50 data messages are inserted into the first label
  • the 40th data message is inserted into the first label.
  • tags such as a first tag, a second tag, and a third tag
  • a plurality of tags such as a first tag, a second tag, and a third tag
  • the first tag, the second tag, and the third tag are alternately inserted into every 50 data packets
  • the first to the 50th data files are inserted into the first tag
  • the 51st to 100th data messages are inserted into the second tag.
  • the 101st - 150th data message is inserted into the third tag
  • the 50th data message is inserted into the first tag, and so on.
  • the first label and the second label are alternately inserted in the data " ⁇ " according to the time rule.
  • the first label is inserted in the data text, and after a time interval, the second label is inserted into the data text, and then a second label is inserted. After the time interval, the first label is inserted in the data text, and so on; or, the first label is inserted into the data packet, and after the first time interval, the second label is inserted into the data text, after the second time interval, Then insert the first label in the data packet, and then insert the second label in the data packet after the first time interval, and so on.
  • the first label can also be inserted alternately in the data packet according to the time rule. , the second label, the third label, and the like.
  • the inserting the at least two tags alternately in the data rule according to the quantity rule may alternately insert the at least two in the data message according to the time rule.
  • the labels are associated with each other.
  • the time rule of sending the data message by the sender may be the default time rule of the sender and the sender, or may be from the sender. Obtaining the time rule can also be learned by a third party, such as a network administrator.
  • the acquired label insertion mode is according to the quantity rule
  • every 50 data messages are alternately inserted into the first label and the second label, and the sender sends a data message every 0.2 ms according to the time rule
  • the first label and the second label are also alternately inserted according to the time rule, that is, the first label and the second label are alternately inserted in the data message every 10 ms.
  • the first label and the second label are alternately inserted in the data message every 20 ms, and the sender sends a data message every 0.2 ms according to the time rule, which can be considered as the quantity.
  • the first label and the second label are alternately inserted, that is, the first label and the second label are alternately inserted every 100 data sheets.
  • the receiver 203 is configured to receive a data packet, and insert one of the at least two labels into the data packet;
  • the sender Before sending the data packet, the sender alternately inserts one of the at least two tags in the MPLS packet header according to the tag insertion mode, and the receiver 203 receives the data packet.
  • the measuring module 204 is configured to perform performance measurement on the network through which the FEC passes according to the label insertion mode and the data packet.
  • the performance measures include, but are not limited to, network performance indicators such as packet loss rate, transmission delay, throughput, and delay jitter.
  • the measurement module 204 When the tag insertion mode is that the at least two tags are alternately inserted in the data packet according to the quantity rule, the measurement module 204 counts the number rule of the data packet according to the inserted tag, and inserts according to the tag. The mode and the statistics of the number of the data packets obtained by the statistics, and performing performance measurement on the network through which the FEC passes, for example, calculating a packet loss rate.
  • the measurement module 204 collects the time rule of the data packet, for example. For example, when a tag inserted in a received data packet alternates between two tags of the at least two tags, extracting a timestamp or collecting a system time of the device, and counting a time rule of the data packet, And performing performance measurement, such as a transmission delay, on the network through which the FEC passes according to the label insertion mode and the time rule of the data packet obtained by statistics.
  • the specific calculation performance indicator may be processed locally, or the collected data may be sent to the sender for processing, and the collected data and the label insertion mode may be sent to the network management device for processing by the network management device.
  • the at least two labels may be external labels and participate in public network label forwarding.
  • the network device queries the label forwarding table according to the outer label. For any network device in the public network, the corresponding forwarding action is the same for each of the labels corresponding to the same FEC in the label forwarding table, and the next hop is the same.
  • the at least two labels may also be internal label, and do not participate in public network label forwarding.
  • the data packets are forwarded according to the outer label in the public network.
  • the network device uses the inner label as the data part. Transfer.
  • the VPN scenario when the data reaches the public network edge device, such as the PE (Provider Edge) device, the external label is displayed, and the label forwarding table is queried according to the inner label.
  • Each of the at least two tags has the same forwarding action, that is, the data packet is forwarded to the same next hop, such as a CE (Customer Edge) device.
  • the outer label is popped up, and the inner label is popped up.
  • the at least two labels that are the inner label are used only for network performance. measuring.
  • the tag based measurement device can be implemented by a processor or a hardware device.
  • Example 3
  • FIG. 3 is a block diagram of a tag-based measurement system according to Embodiment 3 of the present invention.
  • the system includes a first network device 301 and a second network device 302, wherein:
  • the first network device 301 is configured to receive at least two labels allocated by the second network device 302 for the same forwarding equivalence class FEC, and insert the at least two labels into the data packet according to the label insertion mode. a tag, the data of the one of the at least two tags inserted;
  • the second network device 302 is configured to allocate the at least two labels, obtain the label insertion mode, receive the data packet, and perform the FEC according to the label insertion mode and the data packet.
  • the network performs performance measurements.
  • the second network device 302 allocates at least two labels for the same forwarding equivalence class FEC, and notifies the first network device 301 of at least two labels corresponding to the FEC.
  • the FEC can be a set of data messages with the same or similar forwarding characteristics between two MPLS network devices.
  • the second network device 302 acquires a tag insertion mode of the at least two tags from the first network device 301.
  • the tag insertion mode includes:
  • the at least two tags are alternately inserted in the data message according to the quantity rule.
  • the first label and the second label are alternately inserted in the data message according to the quantity rule; and the first label, the second label, the third label, and the like are alternately inserted in the data text according to the number rule.
  • first label and the second label are alternately inserted in the data message according to the time rule; the first label, the second label, the third label, and the like may be alternately inserted in the data text according to the time rule.
  • the inserting the at least two tags in the data packet according to the quantity rule may be performed according to the The time rule alternately inserts the at least two tags in the data message to be associated with each other.
  • the time rule of the data packet sent by the first network device 301 may be a default time rule of the first network device 301 and the second network device 302, or may be used by the second network device 302.
  • the first network device 301 obtains the time rule, and the second network device 302 can learn the time rule through a third party, such as the network management.
  • the first network device 301 inserts one of the at least two tags in the MPLS packet header according to the label insertion mode, and the second network device 302 receives the data packet. .
  • the performance measures include, but are not limited to, network performance indicators such as packet loss rate, transmission delay, throughput, and delay jitter.
  • the second network device 302 When the label insertion mode is to insert the at least two tags alternately in the data packet according to the quantity rule, the second network device 302 counts the number of the data packets according to the inserted tags, according to The label insertion mode and the statistical rule of the number of the data packets obtained by the statistics are performed on the network through which the FEC passes, for example, calculating a packet loss rate.
  • the second network device 302 When the tag insertion mode is that the at least two tags are alternately inserted in the data packet according to a time rule, the second network device 302 counts the time rule of the data packet, for example, when the received datagram When the tag inserted in the text alternates between two tags in the at least two tags, extracting a timestamp or collecting a system time of the device, and counting a time rule of the data packet, according to the tag insertion mode and statistics Obtaining the time rule of the data packet, performing performance measurement on the network through which the FEC passes, such as a transmission delay.
  • the specific computing performance indicator may be processed by the second network device 302, and the collected data may be sent to the first network device 301 for processing, and the collected data and the label insertion mode may be sent to the network.
  • the management device is processed by the network management device.
  • the at least two labels may be external labels, and participate in public network label forwarding, in the public network.
  • the network device queries the label forwarding table according to the outer label. For any network device in the public network, the corresponding forwarding action is the same for each of the labels corresponding to the same FEC in the label forwarding table, and the next hop is the same.
  • the at least two labels may also be internal label, and do not participate in public network label forwarding.
  • the data packets are forwarded according to the outer label in the public network.
  • the network device uses the inner label as the data part. Transfer.
  • the technical solution provided by the embodiment of the present invention can solve the problem that the performance measurement takes up the network bandwidth by inserting the test packet and the OAM packet, and the measurement result is inaccurate when the 0 AM packet is lost.
  • the sub-steps may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium, which may be a ROM/RAM, a magnetic disk or an optical disk.

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Description

一种基于标签的测量方法， 装置和*** 技术领域
本发明涉及网络通信领域， 尤其涉及一种基于标签的测量方法， 装 置和***。 背景技术
很多基于 MPLS ( Multi-Protocol Label Switching, 多协议标签交换 ) 的应用， 如 L3VPN ( Layer3 Virtual Private Network, 三层虚拟专用网 ) 等已在实际网络中得到大规模部署， 但是 MPLS OAM ( Operation, Administration and Maintenance， 操作、 管理和维护）功能还相对薄弱。 目前对于 MPLS网络中丟包、 时延等反映网络性能的指标的测量技术需 要进一步研究。
FEC ( Forwarding Equivalence Class, 转发等价类 )在 MPLS网络中 表示一组具有相似或相同转发特性的数据报文；属于相同 FEC的数据报 文， 在不同的网络节点被赋予确定的 MPLS标签。 标签（ Label )是一 个定长的标识，标签通常位于数据链路层封装头和三层数据包之间， FEC 与标签绑定，数据报文的转发按照标签进行。属于相同 FEC的数据报文 经过相同的 LSP ( Label Switched Path标签交换通道） 。 在 MPLS网络 中， 由 LSR ( Label Switching Router, 标签交换路由器 )组成 MPLS网 络节点， 提供标签交换和标签分发功能。 发明内容 本发明实施例提供了一种基于标签的测量方法， 装置和***， 以解 决现有技术中通过***测试报文和 OAM报文进行性能测量占用网络带 宽， 以及 OAM报文丟失时导致测量结果不准确的问题。
为解决上述技术问题， 本发明实施例提供了一种基于标签的测量方 法， 包括：
为相同的转发等价类 FEC分配至少两个标签；
获取所述至少两个标签的标签***模式；
接收数据报文， 所述数据报文中***了所述至少两个标签中的一个 标签；
根据所述标签***模式和所述数据报文， 对所述 FEC经过的网络进 行性能测量。
本发明实施例提供了一种基于标签的测量装置， 包括：
标签分配模块， 用于为相同的转发等价类 FEC分配至少两个标签； 获取模块， 用于获取所述至少两个标签的标签***模式；
接收模块， 用于接收数据报文， 所述数据报文中***了所述至少两 个标签中的一个标签；
测量模块， 用于根根据所述标签***模式和所述数据报文， 对所述
FEC经过的网络进行性能测量。
本发明实施例提供了一种基于标签的测量***， 所述***包括第 一网络设备和第二网络设备， 其中：
所述第一网络设备， 用于接收所述第二网络设备为相同的转发等价 类 FEC分配的至少两个标签， 根据标签***模式在数据报文中***所述 至少两个标签中的一个标签， 发送所述***了所述至少两个标签中的一 个标签的数据报文； 所述第二网络设备， 用于分配所述至少两个标签， 获取所述标签插 入模式， 接收所述数据报文， 根据所述标签***模式和所述数据报文， 对所述 FEC经过的网络进行性能测量。
采用本发明实施例提供的技术方案，可以不***测试报文和 OAM报 文进行 MPLS网络性能测量， 不占用额外的网络带宽。 附图说明 将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而 易见地， 下面描述中的附图仅仅是本发明的一些实施例，对于本领域 普通技术人员来讲， 在不付出创造性劳动性的前提下，还可以根据这 些附图获得其他的附图。
图 1是本发明实施例提供的一种基于标签的测量方法流程图； 图 2是本发明实施例提供的一种基于标签的测量装置框图； 图 3是本发明实施例提供的一种基于标签的测量***框图。 具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方 案进行清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明的一 部分实施例， 而不是全部的实施例。基于本发明中的实施例， 本领域 普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施 例， 都属于本发明保护的范围。
本发明实施例提供了一种基于标签的测量方法， 包括： 为相同的转 发等价类 FEC分配至少两个标签； 获取所述至少两个标签的标签***模 式； 接收数据报文， 所述数据报文中***了所述至少两个标签中的一个 标签； 根据所述标签***模式和所述数据报文， 对所述 FEC经过的网络 进行性能测量。 采用本发明实施例提供的技术方案， 可以解决通过*** 测试报文和 OAM报文进行性能测量占用网络带宽， 以及 0 AM报文丟失 时导致测量结果不准确的问题。
为使本发明实施例的上述目的、 特征和优点能够更加明显易懂， 下面结合附图和具体实施方式对本发明实施例作进一步详细的说明。 实施例 1
参见图 1，是本发明实施例提供的一种基于标签的测量方法的流程 图， 所述基于标签的测量方法包括：
101 : 为相同的转发等价类 FEC分配至少两个标签。
接收方为相同的转发等价类 FEC分配至少两个标签， 并将该 FEC 对应的至少两个标签通知发送方。 所述 FEC可以为两个 MPLS网络设 备间一组具有相同或相似转发特性的数据"¾文。
102: 获取所述至少两个标签的标签***模式。
接收方从发送方获取所述至少两个标签的标签***模式。 所述标签 ***模式包括：
按照数量规律在数据报文中交替***所述至少两个标签。 例如， 按 照数量规律在数据报文中交替***第一标签和第二标签。 举例来说， 每 50个数据报文交替***第一标签和第二标签， 即第 1 ~ 50个数据报文插 入第一标签， 第 51 ~ 100个数据报文***第二标签， 第 101 - 150个数据 报文***第一标签， 之后 50个数据报文再***第二标签， 依此类推。 或 者， 第 1 ~ 50个数据报文***第一标签、 第 51 ~ 90个数据报文***第二 标签， 之后 50个数据报文再***第一标签， 再之后 40个数据报文再*** 第二标签， 依此类推。 还可以是按照数量规律在数据报文中交替***第 一标签， 第二标签， 第三标签等多个标签。 举例来说， 每 50个数据报文 交替***第一标签、 第二标签和第三标签， 则第 1 ~ 50个数据 文*** 第一标签， 第 51 ~ 100个数据报文***第二标签， 第 101 - 150个数据报 文***第三标签， 之后 50个数据报文再***第一标签， 依此类推。
也可以按照时间规律在数据报文中交替***所述至少两个标签。 例 如， 按照时间规律在数据报文中交替***第一标签和第二标签。 举例来 说， 开始在数据 文中***第一标签， 经过一个时间间隔后， 在数据 文中***第二标签， 再经过一个时间间隔后在数据 ^^艮文中再***第一标 签， 依次类推； 或者， 开始在数据报文中***第一标签， 经过第一时间 间隔后， 在数据 文中***第二标签， 经过第二时间间隔后， 再在数据 报文中再***第一标签， 再经过第一时间间隔后， 再在数据报文中再插 入第二标签， 依次类推。 还可以是按照时间规律在数据报文中交替*** 第一标签， 第二标签， 第三标签等多个标签。
当发送方按一定时间规律发送数据报文时， 所述按照数量规律在数 据报文中交替***所述至少两个标签可以与所述按照时间规律在数据 报文中交替***所述至少两个标签相互关联。 所述发送方发送数据报文 的时间规律， 可以是发送方和接收方事先默认的时间规律， 也可以由接 收方从发送方获得该时间规律， 还可以是接收方通过第三方， 如网管获 知该时间规律。 举例来说， 如果获取的标签***模式是按照数量规律， 每 50个数据报文交替***第一标签和第二标签， 并且发送方按照时间规 律， 每 0.2ms发送一个数据报文， 则可以认为也是按照时间规律交替插 入第一标签和第二标签，即每 10ms在数据 文中交替***第一标签和第 二标签。 如果获取的标签***模式是按照时间规律， 每 20ms在数据报文 中交替***第一标签和第二标签， 并且发送方按照时间规律， 每 0.2ms 发送一个数据报文， 则可以认为也是按照数量规律交替***第一标签和 第二标签， 即每 100个数据报文交替***第一标签和第二标签。
103: 接收数据报文， 所述数据报文中***了所述至少两个标签中 的一个标签。
发送方在发送数据报文前， 根据所述标签***模式在 MPLS报文头 中***所述至少两个标签中的一个标签， 接收方接收该数据报文。
104:根据所述标签***模式和所述数据报文，对所述 FEC经过的网 络进行性能测量。
所述性能测量包括但不限于丟包率， 传输时延， 吞吐量， 时延抖动 等网络性能指标。
当所述标签***模式是按照数量规律在数据报文中交替***所述 至少两个标签时， 根据***的标签， 统计所述数据报文的数量规律， 根 据所述标签***模式和统计得到的所述数据报文的数量规律， 对所述 FEC经过的网络进行性能测量， 例如计算丟包率。
举例来说， 标签***模式是每 50个数据报文交替***第一标签和 第二标签，收到的所述数据报文如下： 50个***了第一标签的数据报文， 48个***了第二标签的数据报文， 45个***了第一标签的数据报文， 47个***了第二标签的数据报文， 47个***了第一标签的数据报文， 49 个***了第一标签的数据报文， 然后计算出丟包率为 ( 6*50-(50+48+45+47+47+49) ) /(6*50)=4.667%。
当所述标签***模式是按照时间规律在数据报文中交替***所述 至少两个标签时， 统计所述数据报文的时间规律， 例如， 当接收到的数 据报文中***的标签在所述至少两个标签中两个标签间交替时， 提取时 间戳或采集所述装置的***时间， 统计所述数据报文的时间规律， 根据 所述标签***模式和统计得到的所述数据报文的时间规律，对所述 FEC 经过的网络进行性能测量， 例如传输时延。
举例来说， 标签***模式是每 10ms在数据报文中交替***第一标 签和第二标签， 接收数据报文时： 收到第一个***了第一标签的数据报 文时提取时间戳 T1， 接下来连续收到多个***了第一标签的数据报文， 当收到***了第二标签的数据报文时， 提取时间戳为 Tl+l lms， 接下来 连续收到多个***了第二标签的数据报文， 然后又收到***了第一标签 的数据报文时， 提取时间戳 Tl+20.5ms， 接下来又连续收到多个***了 第一标签的数据报文， 当再次收到***了第二标签的数据报文时， 提取 时间戳为 Tl+32ms， 接下来又连续收到多个***了第二标签的数据报 文，然后再次收到***了第一标签的数据报文时，提取时间戳 Tl+43ms， 然后计算出总传输时延为（Tl+43)-(Tl+4 X 10)=3ms , 平均传输时延为 ((T1+43)— (Tl+4 X 10))/ 4=0.75 ms。
具体的计算性能指标可以在本地处理， 也可以将采集到的数据发给 发送方处理， 还可以将采集到的数据和所述标签***模式发送给网络管 理设备， 由网络管理设备处理。
所述至少两个标签可以是外层标签， 参与公网标签转发，在公网中 网络设备根据外层标签查询标签转发表。对于公网中的任意一个网络设 备来说， 其标签转发表中对应于相同 FEC的标签中的每一个，对应的转 发动作相同， 下一跳也相同。
所述至少两个标签还可以是内层标签， 不参与公网标签转发， 数据 报文在公网中根据外层标签进行标签转发， 在公网中网络设备将所述内 层标签作为数据部分进行传输。 在 VPN场景中， 当数据 文到达公网边 缘网络设备， 如 PE ( Provider Edge， 运营商边缘 )设备时， 弹出外层标 签， 再根据内层标签查询标签转发表。 所述至少两个标签中的每一个对 应的转发动作相同，即将数据报文转发至相同的下一跳，如 CE( Customer Edge, 用户边缘）设备。 在非 VPN的 MPLS网络场景中， 当数据 4艮文到 达最后一跳 MPLS网络设备时， 弹出外层标签， 再弹出内层标签， 所述 作为内层标签的至少两个标签仅用于网络性能测量。
采用本发明实施例提供的技术方案， 通过数据报文中交替***至少 两个标签进行 MPLS网络性能测量， 可以解决通过***测试 ^艮文和 OAM 报文进行性能测量占用网络带宽，以及 OAM报文丟失时导致测量结果不 准确的问题。 实施例 2
参见图 2， 是本发明实施例提供的一种基于标签的测量装置框图， 所述装置包括标签分配模块 201， 获取模块 202， 接收模块 203和测量 模块 204， 其中：
所述标签分配模块 201，用于为相同的转发等价类 FEC分配至少两 个标签；
所述 FEC可以为两个 MPLS网络设备间一组具有相同或相似转发 特性的数据报文。
所述获取模块 202， 用于获取所述至少两个标签的标签***模式； 所述获取模块 202， 用于从发送方获取所述至少两个标签的标签插 入模式。 所述标签***模式包括：
按照数量规律在数据报文中交替***所述至少两个标签。 例如， 按 照数量规律在数据报文中交替***第一标签和第二标签。 举例来说， 每
50个数据报文交替***第一标签和第二标签， 即第 1 ~ 50个数据报文插 入第一标签， 第 51 ~ 100个数据报文***第二标签， 第 101 - 150个数据 报文***第一标签， 之后 50个数据报文再***第二标签， 依此类推。 或 者， 第 1 ~ 50个数据报文***第一标签、 第 51 ~ 90个数据报文***第二 标签， 之后 50个数据报文再***第一标签， 再之后 40个数据报文再*** 第二标签， 依此类推。 还可以是按照数量规律在数据报文中交替***第 一标签， 第二标签， 第三标签等多个标签。 举例来说， 每 50个数据报文 交替***第一标签、 第二标签和第三标签， 则第 1 ~ 50个数据 文*** 第一标签， 第 51 ~ 100个数据报文***第二标签， 第 101 - 150个数据报 文***第三标签， 之后 50个数据报文再***第一标签， 依此类推。
也可以按照时间规律在数据报文中交替***所述至少两个标签。 例 如， 按照时间规律在数据 "^文中交替***第一标签和第二标签。 举例来 说， 开始在数据 文中***第一标签， 经过一个时间间隔后， 在数据 文中***第二标签， 再经过一个时间间隔后在数据 文中再***第一标 签， 依次类推； 或者， 开始在数据报文中***第一标签， 经过第一时间 间隔后， 在数据 文中***第二标签， 经过第二时间间隔后， 再在数据 报文中再***第一标签， 再经过第一时间间隔后， 再在数据报文中再插 入第二标签， 依次类推。 还可以按照时间规律在数据报文中交替***第 一标签， 第二标签， 第三标签等多个标签。
当发送方按一定时间规律发送数据报文时， 所述按照数量规律在数 据 "^文中交替***所述至少两个标签可以与所述按照时间规律在数据 报文中交替***所述至少两个标签相互关联。 所述发送方发送数据报文 的时间规律， 可以是事先和发送方默认好的时间规律， 也可以从发送方 获得该时间规律， 还可以是通过第三方， 如网管获知该时间规律。 举例 来说， 如果获取的标签***模式是按照数量规律， 每 50个数据报文交替 ***第一标签和第二标签， 并且发送方按照时间规律， 每 0.2ms发送一 个数据报文， 则可以认为也是按照时间规律交替***第一标签和第二标 签， 即每 10ms在数据报文中交替***第一标签和第二标签。如果获取的 标签***模式是按照时间规律，每 20ms在数据报文中交替***第一标签 和第二标签， 并且发送方按照时间规律， 每 0.2ms发送一个数据报文， 则可以认为也是按照数量规律交替***第一标签和第二标签， 即每 100 个数据 文交替***第一标签和第二标签。
所述接收器 203， 用于接收数据报文， 所述数据报文中***了所述 至少两个标签中的一个标签；
发送方在发送数据报文前， 根据所述标签***模式在 MPLS报文头 中交替***所述至少两个标签中的一个标签， 所述接收器 203接收该数 据报文。
所述测量模块 204， 用于根据所述标签***模式和所述数据报文， 对所述 FEC经过的网络进行性能测量。
所述性能测量包括但不限于丟包率， 传输时延， 吞吐量， 时延抖动 等网络性能指标。
当所述标签***模式是按照数量规律在数据报文中交替***所述 至少两个标签时， 所述测量模块 204根据***的标签， 统计所述数据报 文的数量规律，根据所述标签***模式和统计得到的所述数据报文的数 量规律， 对所述 FEC经过的网络进行性能测量， 例如计算丟包率。
当所述标签***模式是按照时间规律在数据报文中交替***所述 至少两个标签时， 所述测量模块 204统计所述数据报文的时间规律， 例 如， 当接收到的数据报文中***的标签在所述至少两个标签中两个标签 间交替时， 提取时间戳或采集所述装置的***时间， 统计所述数据报文 的时间规律， 根据所述标签***模式和统计得到的所述数据报文的时间 规律， 对所述 FEC经过的网络进行性能测量， 例如传输时延。
具体的计算性能指标可以在本地处理， 也可以将采集到的数据发给 发送方处理， 还可以将采集到的数据和所述标签***模式上送网络管理 设备， 由网络管理设备处理。
所述至少两个标签可以是外层标签， 参与公网标签转发， 在公网中 网络设备根据外层标签查询标签转发表。对于公网中的任意一个网络设 备来说， 其标签转发表中对应于相同 FEC的标签中的每一个，对应的转 发动作相同， 下一跳也相同。
所述至少两个标签还可以是内层标签， 不参与公网标签转发， 数据 报文在公网中根据外层标签进行标签转发， 在公网中网络设备将所述内 层标签作为数据部分进行传输。 在 VPN场景中， 当数据 文到达公网边 缘网络设备， 如 PE ( Provider Edge， 运营商边缘 )设备时， 弹出外层标 签， 再根据内层标签查询标签转发表。 所述至少两个标签中的每一个对 应的转发动作相同，即将数据报文转发至相同的下一跳，如 CE( Customer Edge, 用户边缘）设备。 在非 VPN的 MPLS网络场景中， 当数据报文到 达最后一跳 MPLS网络设备时， 弹出外层标签， 再弹出内层标签， ， 所 述作为内层标签的至少两个标签仅用于网络性能测量。
所述基于标签的测量装置可以由处理器或硬件设备实现。 实施例 3
参见图 3， 是本发明实施例 3提供的一种基于标签的测量***框图， 所述***包括第一网络设备 301和第二网络设备 302， 其中：
所述第一网络设备 301， 用于接收所述第二网络设备 302为相同的转 发等价类 FEC分配的至少两个标签， 根据标签***模式在数据报文中插 入所述至少两个标签中的一个标签， 发送所述***了所述至少两个标签 中的一个标签的数据 4艮文；
所述第二网络设备 302， 用于分配所述至少两个标签， 获取所述标 签***模式， 接收所述数据报文， 根据所述标签***模式和所述数据报 文， 对所述 FEC经过的网络进行性能测量。
所述第二网络设备 302为相同的转发等价类 FEC分配至少两个标 签， 并将该 FEC对应的至少两个标签通知所述第一网络设备 301。 所述
FEC可以为两个 MPLS网络设备间一组具有相同或相似转发特性的数据 报文。
所述第二网络设备 302从所述第一网络设备 301获取所述至少两个 标签的标签***模式。 所述标签***模式包括：
按照数量规律在数据报文中交替***所述至少两个标签。 例如， 按 照数量规律在数据报文中交替***第一标签和第二标签； 还可以按照数 量规律在数据 文中交替***第一标签， 第二标签， 第三标签等多个标 签。
也可以按照时间规律在数据报文中交替***所述至少两个标签。 例 如， 按照时间规律在数据报文中交替***第一标签和第二标签； 还可以 按照时间规律在数据 文中交替***第一标签， 第二标签， 第三标签等 多个标签。
当所述第一网络设备 301按一定时间规律发送数据报文时， 所述按 照数量规律在数据报文中交替***所述至少两个标签可以与所述按照 时间规律在数据报文中交替***所述至少两个标签相互关联。 所述第一 网络设备 301发送数据报文的时间规律， 可以是所述第一网络设备 301和 所述第二网络设备 302事先默认的时间规律， 也可以由所述第二网络设 备 302从所述第一网络设备 301获得该时间规律，还可以是所述第二网络 设备 302通过第三方， 如网管获知该时间规律。
所述第一网络设备 301在发送数据报文前， 根据所述标签***模式 在 MPLS报文头中***所述至少两个标签中的一个标签， 所述第二网络 设备 302接收该数据报文。
所述性能测量包括但不限于丟包率， 传输时延， 吞吐量， 时延抖动 等网络性能指标。
当所述标签***模式是按照数量规律在数据报文中交替***所述 至少两个标签时， 所述第二网络设备 302才艮据***的标签， 统计所述数 据报文的数量规律， 根据所述标签***模式和统计得到的所述数据报文 的数量规律， 对所述 FEC经过的网络进行性能测量， 例如计算丟包率。
当所述标签***模式是按照时间规律在数据报文中交替***所述 至少两个标签时，所述第二网络设备 302统计所述数据报文的时间规律， 例如， 当接收到的数据报文中***的标签在所述至少两个标签中两个标 签间交替时， 提取时间戳或采集所述装置的***时间， 统计所述数据报 文的时间规律， 根据所述标签***模式和统计得到的所述数据报文的时 间规律， 对所述 FEC经过的网络进行性能测量， 例如传输时延。
具体的计算性能指标可以由所述第二网络设备 302处理， 也可以将 采集到的数据发给所述第一网络设备 301处理， 还可以将采集到的数据 和所述标签***模式上送网络管理设备， 由网络管理设备处理。
所述至少两个标签可以是外层标签， 参与公网标签转发，在公网中 网络设备根据外层标签查询标签转发表。对于公网中的任意一个网络设 备来说， 其标签转发表中对应于相同 FEC的标签中的每一个，对应的转 发动作相同， 下一跳也相同。
所述至少两个标签还可以是内层标签， 不参与公网标签转发， 数据 报文在公网中根据外层标签进行标签转发， 在公网中网络设备将所述内 层标签作为数据部分进行传输。
采用本发明实施例提供的技术方案， 可以解决通过***测试报文和 OAM报文进行性能测量占用网络带宽， 以及 0 AM报文丟失时导致测量 结果不准确的问题。
分步骤是可以通过程序来指令相关的硬件完成， 所述的程序可以存储于 计算机可读存储介质中， 所述存储介质可以是 ROM/RAM, 磁盘或光盘 等。
以上所述， 仅为本发明较佳的具体实施方式， 但本发明的保护范围 并不局限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范 围内， 可轻易想到的变化或替换， 都应涵盖在本发明的保护范围之内。

Claims

1、 一种基于标签的测量方法， 其特征在于， 包括： 为相同的转发等价类 FEC分配至少两个标签；
获取所述至少两个标签的标签***模式；
接收数据报文， 所述数据报文中***了所述至少两个标签中的一个 标签；
根据所述标签***模式和所述数据报文， 对所述 FEC经过的网络进 行性能测量。
2、 根据权利要求 1所述的方法， 其特征在于， 所述标签***模式包 括按照数量规律在数据报文中交替***所述至少两个标签。
3、 根据权利要求 2所述的方法， 其特征在于， 所述根据所述标签插 入模式和所述数据报文， 对所述 FEC经过的网络进行性能测量， 包括： 统计所述数据报文的数量规律， 根据所述标签***模式和统计得到 的所述数据报文的数量规律， 对所述 FEC经过的网络进行性能测量。
4、 根据权利要求 1所述的方法， 其特征在于， 所述标签***模式包 括按照时间规律在数据报文中交替***所述至少两个标签。
5、 根据权利要求 4所述的方法， 其特征在于， 所述根据所述标签插 入模式和所述数据报文， 对所述 FEC经过的网络进行性能测量， 包括： 统计所述数据报文的时间规律， 根据所述标签***模式和统计得到 的所述数据报文的时间规律， 对所述 FEC经过的网络进行性能测量。
6、 一种基于标签的测量装置， 其特征在于， 包括：
标签分配模块， 用于为相同的转发等价类 FEC分配至少两个标签； 获取模块， 用于获取所述至少两个标签的标签***模式； 接收器， 用于接收数据报文， 所述数据报文中***了所述至少两个 标签中的一个标签；
测量模块， 用于根据所述标签***模式和所述数据报文， 对所述
FEC经过的网络进行性能测量。
7、 根据权利要求 6所述的装置， 其特征在于， 所述标签***模式 包括：
按照数量规律在数据报文中交替***所述至少两个标签； 或者， 按照时间规律在数据 文中交替***所述至少两个标签；
8、 根据权利要求 7所述的装置， 其特征在于， 所述测量模块， 用 于，
当所述标签***模式是按照数量规律在数据报文中交替***所述 至少两个标签时， 统计所述数据报文的数量规律， 根据所述标签***模 式和统计得到的所述数据报文的数量规律，对所述 FEC经过的网络进行 性能测量；
当所述标签***模式是按照时间规律在数据报文中交替***所述 至少两个标签时， 统计所述数据报文的时间规律， 才艮据所述标签***模 式和统计得到的所述数据报文的时间规律，对所述 FEC经过的网络进行 性能测量。
9、 一种基于标签的测量***， 其特征在于， 所述***包括第一网 络设备和第二网络设备， 其中：
所述第一网络设备， 用于接收所述第二网络设备为相同的转发等价 类 FEC分配的至少两个标签， 根据标签***模式在数据报文中***所述 至少两个标签中的一个标签， 发送所述***了所述至少两个标签中的一 个标签的数据报文； 所述第二网络设备， 用于分配所述至少两个标签， 获取所述标签插 入模式， 接收所述数据报文， 根据所述标签***模式和所述数据报文， 对所述 FEC经过的网络进行性能测量。
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