WO2009052727A1 - Procédé d'envoi, procédé de traitement, système de communication et dispositif pour des informations de flux de données - Google Patents

Procédé d'envoi, procédé de traitement, système de communication et dispositif pour des informations de flux de données Download PDF

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Publication number
WO2009052727A1
WO2009052727A1 PCT/CN2008/072613 CN2008072613W WO2009052727A1 WO 2009052727 A1 WO2009052727 A1 WO 2009052727A1 CN 2008072613 W CN2008072613 W CN 2008072613W WO 2009052727 A1 WO2009052727 A1 WO 2009052727A1
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Prior art keywords
flow
information
identifier
session identifier
data stream
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PCT/CN2008/072613
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English (en)
French (fr)
Inventor
Peng Ma
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009052727A1 publication Critical patent/WO2009052727A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/14Network analysis or design
    • H04L41/142Network analysis or design using statistical or mathematical methods

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for transmitting data stream information, a method for processing data stream information, a communication system, and a device.
  • the network data stream (Netstream) acquisition technology mainly collects the packets in the network and presents them to the operators or operators of the operators through the NetFlow Data Analysis (NDA) to facilitate network planning and traffic engineering. , network detection or monitoring of users.
  • NDA NetFlow Data Analysis
  • IP Internet Protocol
  • VI and V5 version a fixed format VI and V5 version is proposed, wherein the VI version includes an IP seven-tuple information (source address). , target address, source port, target port, layer three protocol, TOS bit, input interface), but since only providing a fixed format data stream can not meet the user's different sampling requirements for the data stream, the prior art also provides a Data stream in V9 format.
  • a data stream information transmission method in the prior art is not limited to the use of the data stream in the VI, V5 or V9 format described above, and specifically: the router sends a sample data stream to a network flow collection system (NDC, Netflow Data Collector).
  • NDC Network flow collection system
  • the identification information of the data stream such as source IP, destination IP, source port number, destination port number, etc.
  • statistical information such as the total number of packets, sampling time, etc.
  • the router Since the router sends the sampled data stream to the NDC every time, it must simultaneously transmit the identification information and statistical information of the data stream, so the router and the router are wasted.
  • the bandwidth between NDCs reduces network resource utilization.
  • the embodiment of the invention provides a data stream information sending method, a data stream information processing method, a communication system and a device, which can improve network resource utilization.
  • the data stream information sending method provided by the embodiment of the present invention includes: acquiring the received data stream Flow identification information and flow statistics information;
  • the session identifier corresponding to the flow identifier information is queried according to the flow identifier information, the session identifier and the flow statistics information are sent to the network flow collection system NDC.
  • the method for processing the data stream information provided by the embodiment of the present invention includes: receiving the session identifier sent by the routing device and the flow statistics information of the data stream; querying the session identifier according to the correspondence between the locally stored session identifier and the flow identifier information Corresponding stream identification information.
  • the routing device includes: a data stream receiving unit, configured to receive a data stream; an acquiring unit, configured to acquire flow identifier information and flow statistics information of the received data stream; Determining whether the session identifier corresponding to the flow identifier information is queried; the sending unit, configured to send the query session identifier and the network to the network flow collection system when the session identifier corresponding to the flow identifier information is queried Descriptive statistics.
  • the network flow collection system includes: a receiving unit, configured to receive a session identifier sent by the routing device and flow statistics information of the data flow; and a query unit, configured to use the locally stored session identifier and the flow identifier information The corresponding relationship queries the flow identifier information corresponding to the session identifier.
  • Another communication system provided by the embodiment of the present invention includes: a routing device and a network flow collection system, where
  • the routing device is configured to obtain flow identification information and flow statistics information of the received data flow, and send a network flow collection system to the network flow collection system when the flow identification information is queried to the session identifier corresponding to the flow identification information. Sending the session identifier and the flow statistics;
  • the network flow collection system is configured to receive the identifier information and the flow statistics, and query the flow identifier information corresponding to the session identifier from the correspondence between the previously stored flow identifier information and the session identifier, and Corresponding processing is performed according to the flow identification information and the flow statistical information.
  • the embodiments of the present invention have the following advantages:
  • the session identifier information of the data stream is obtained, it is determined whether the session identifier corresponding to the flow identifier information can be queried, and if the query is obtained, the session identifier and the flow statistics information are sent to the NDC, so If the flow identifiers are the same, the flow identifiers may not be sent to the NDC, and the session identifier corresponding to the flow identifier may be sent.
  • the session identifier may be determined by the actual situation, and the content included in the flow identifier information is less than that in the flow identifier information. The content is included, so the bandwidth between the router and the NDC can be saved, thereby improving the utilization of network resources.
  • FIG. 1 is a flowchart of an embodiment of a data stream information transmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an embodiment of a communication system according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an embodiment of a routing device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an embodiment of a network flow collection system according to an embodiment of the present invention.
  • Embodiments of the present invention provide a data stream information transmission method (including a data stream information sending method and a data stream information processing method), a communication system, and a device, which are used to improve network resource utilization.
  • the session identifier information of the data stream is obtained, it is determined whether the session identifier corresponding to the flow identifier information can be queried, and if the query is obtained, the session identifier and the flow statistics information are sent to the NDC, so If the flow identifiers are the same, the flow identifiers may not be sent to the NDC, and the session identifier corresponding to the flow identifier may be sent.
  • the session identifier may be determined by the actual situation, and the content included in the flow identifier information is less than that in the flow identifier information. The content is included, so the bandwidth between the router and the NDC can be saved, thereby improving the utilization of network resources.
  • the following describes the data stream information transmission method (including the data stream information transmission method and the data stream information processing method) in the embodiment of the present invention.
  • the data stream information transmission method embodiment in the embodiment of the present invention is described. Includes:
  • the routing device can receive the data stream.
  • the routing device can actively collect the data stream, and can also receive the data stream sent by the other device.
  • the manner of the collection is the same as that in the prior art, and is not limited herein.
  • the data stream can be a network stream (NETFLOW), or a switched stream (SFLOW, Switch Flow), or a configuration stream (CFLOW, Configure Flow).
  • the NETFLOW data stream is taken as an example for description. It can be understood that other types of data streams can also be used.
  • the flow identification information includes an IP seven-tuple: (source address, destination address, source port, target port, protocol number, TOS bit, input interface), and according to the version of the data format adopted in the actual application. Different, you can also include some related information.
  • the flow identification information of the data flow in this embodiment is as follows: Table 1
  • the flow identification information of the three data streams is shown in the above table.
  • the contents of the flow identification information in this embodiment can be seen from the above table.
  • the flow statistics may include the total number of packets, the sampling time, and the like. It can be understood that other types of flow statistics may be added according to actual applications.
  • the routing device queries whether the session identifier corresponding to the flow identification information exists according to the obtained flow identification information.
  • step 104 determine whether the corresponding session identifier is queried, if queried, step 108 is performed, if not, step 105 is performed;
  • the step of querying may be queried in the locally stored information, or may be queried in other network elements.
  • the session identifier is generated according to the flow identifier information.
  • the routing device runs for the first time, or the routing device receives the first data stream, the session identifier corresponding to the flow identifier information cannot be queried.
  • the routing device After the routing device starts running, if the data flow is received and the session identifier corresponding to the flow identification information of the data flow is not queried, the data flow is determined to be a new data flow, and a session identifier needs to be assigned to the routing data.
  • the specific allocation mode is not limited here, and may be randomly allocated, or may be an integer type, a character type, or a floating point type.
  • the session identifier may be defined as the occupied number of bits. Less data format, but considering the problem of data reuse, that is, in actual applications, different data streams may use the same session identifier. This situation will affect the resolution of NDC, resulting in data processing.
  • the session identifier is A. If the second data stream is also assigned in the random allocation manner to obtain the session identifier A, the NDC may not be able to The session identifier of the data stream is correctly parsed. Therefore, in order to avoid the problem of data reuse, the session identifier can be defined as "unsigned long integer", that is, Unsigned long integer, and the session identifier occupies 8 words. A section, which can represent a 64-bit positive integer, that is, can represent a positive integer from 0 to 264-1, thus reducing the probability that different data streams will use the same tongue mark.
  • the routing device After the session identifier is generated according to the flow identifier information, the routing device also needs to establish a correspondence between the flow identifier information and the session identifier, and the corresponding relationship includes different tongue identifiers corresponding to the flow identifier information, as shown in the following table:
  • the flow identifier information of the first data stream can obtain the session identifier 1001
  • the flow identifier information of the second data stream can obtain the session identifier 1002.
  • the routing device sends the generated correspondence between the flow identification information and the session identifier to the NDC for storage.
  • step 108 can be divided into two cases:
  • step 104 query the corresponding session identifier:
  • the routing device can query the flow according to the correspondence between the previously stored flow identification information and the session identifier.
  • the session corresponding to the identification information logo is
  • step 104 does not query the corresponding session identifier:
  • step 104 If the session identifier corresponding to the flow identifier information is not queried in step 104, the session identifier generated in step 106 and the flow statistics of the data stream are sent to the NDC.
  • the routing device may send the corresponding relationship in step 107 to the NDC at the same time as the session identifier in step 108, or may be separately sent, which is not limited herein.
  • step 109 can also be divided into two cases, corresponding to the two cases of step 108:
  • the NDC only receives the session identifier and the flow statistics:
  • the NDC queries the flow identifier information corresponding to the session identifier according to the correspondence between the locally stored flow identifier information and the session identifier. It can be understood that, in this case, the correspondence between the flow identifier information sent by the routing device and the session identifier is stored in the NDC.
  • the NDC receives the session identifier, the flow statistics, and the correspondence between the flow identifier information and the session identifier:
  • the NDC queries the corresponding flow identifier information corresponding to the received session identifier.
  • the NDC determines whether the flow identification information or the session identifier in the corresponding relationship has been If yes, the received correspondence is processed according to a preset processing rule.
  • the specific processing manner can be divided into:
  • the NDC merges the content in the received correspondence with the content in the original correspondence to form a new correspondence.
  • the NDC saves the newly received correspondence and aging the data in the original correspondence.
  • the subsequent analysis process takes the newly saved correspondence as the standard.
  • the NDC parses the flow identification information of the data stream, it performs other processing processes in combination with the received flow statistics.
  • the specific processing type is not limited, and may be the same as the processing in the prior art, for example, the user is using the IP TV service.
  • the IP TV server needs to send a corresponding data stream to the routing device, and the routing device can send the session identifier and the flow statistics related to the data stream to the NDC, and the NDC performs corresponding processing, and then the network stream analysis system (NDA, Netstream) Data Analyzer) charges the data stream according to the received session identifier and flow statistics, or determines whether the current data stream transmission status is normal.
  • NDA Netstream Data Analyzer
  • the session identifier information of the data stream is obtained, it is determined whether the session identifier corresponding to the flow identifier information can be queried, and if the query is sent, the session identifier and the flow statistics information are sent to the NDC, so The same data flow may be identified, and the flow identifier may not be sent to the NDC, and a session identifier corresponding to the flow identifier may be sent.
  • the session identifier may be determined by an actual situation, and the content included in the flow identifier information is less than that included in the flow identifier information. Content, so it can save the bandwidth between the router and the NDC, thereby improving the utilization of network resources;
  • the data type of the session identifier is set to Unsigned long integer, it is possible to avoid the case where different data streams adopt the same tongue mark, thereby improving the accuracy of the NDC stream identification information;
  • the NDC After receiving a new correspondence, the NDC needs to merge data according to preset processing rules or aging the original data, so that different data streams can be distinguished more accurately, thereby further improving the accuracy of the NDC parsing stream identification information. Sex.
  • connection of the data stream after receiving the data stream, it may also be determined whether the connection of the data stream is a stable connection (for example, an IP voice connection, an IP TV connection, a video on demand connection, or a data connection of a hot site), and if it is a stable connection, It is determined whether the corresponding session identifier can be queried according to the flow identifier information of the data stream. Since the stream identification information of the stable connection is generally the same in a certain period of time, the transmission efficiency of the data stream information can be improved.
  • a stable connection for example, an IP voice connection, an IP TV connection, a video on demand connection, or a data connection of a hot site
  • the stable connection flag may be: the data source for transmitting the data stream in the preset time is fixed, or the data stream is transmitted by using the real-time streaming protocol, or the data type is consistent, etc., according to the actual application, the above-mentioned flag satisfies one or more
  • the connection of the data stream can be considered to be a stable connection.
  • connection end information In addition, if the routing device receives the connection end information, it needs to correspond to the connection end information.
  • the session ID is aged out, and the NDC is notified to age the corresponding relationship.
  • the specific connection end information can be the content of the fm or RST bit of the TCP, or the inactive time of a certain data stream times out.
  • the routing device may establish a session with the NDC for transmitting related information, for example, the routing device sends the session identifier and the flow statistics as session information to the NDC. It can be understood that the session is in the session.
  • the routing device in order to maintain the session connection, the routing device needs to send session information to the NDC in a time interval or a packet interval manner, and the NDC receives the session information sent by the routing device.
  • the embodiment of the communication system in the embodiment of the present invention includes:
  • the routing device 201 is configured to generate a session identifier according to the flow identifier information of the received data stream, establish a correspondence between the flow identifier information and the session identifier, and send the session identifier, the flow statistics information of the data stream, and the corresponding relationship;
  • the network flow collection system 202 is configured to receive the flow identification information and the corresponding relationship of the tongue identifier and the data flow, and convert the received session identifier into the flow identification information according to the received correspondence.
  • an embodiment of a routing device in this embodiment of the present invention includes:
  • a data stream receiving unit 301 configured to receive a data stream
  • the obtaining unit 302 is configured to obtain the flow identification information and the flow statistics information of the received data flow
  • the verification unit 303 is configured to determine whether the session identifier corresponding to the flow identification information is queried
  • the sending unit 304 is configured to When the session identifier corresponding to the flow identifier information is queried, the queried session identifier and the flow statistics information are sent to the network flow collection system.
  • the connection determining unit 305 is configured to determine whether the connection of the data stream is a stable connection when the session identifier corresponding to the flow identifier is not queried; the flow identification information of the stable connected data stream is generally in a certain period of time Is the same, such as IP voice connection, IP TV connection, video on demand connection or Data connection for popular sites.
  • the session identifier generating unit 306 is configured to generate a session identifier according to the stream identifier information of the data stream when the connection of the data stream is a stable connection;
  • the correspondence relationship control unit 307 is configured to: after the session identifier generating unit generates the session identifier according to the flow identifier information of the data flow, establish a correspondence between the flow identifier information and the generated session identifier, and send the corresponding relationship between the flow identifier information and the generated session identifier to the network flow collection system. The corresponding relationship.
  • routing device embodiment in the embodiment of the present invention may further include:
  • the aging control unit 308 is configured to age the session identifier corresponding to the connection end information when receiving the connection end information.
  • the tongue control unit 309 is configured to establish a session with the network flow collection system according to the tongue identifier, and send the session information to the network flow collection system by using a timing interval or a message interval manner.
  • an embodiment of a network flow collection system in an embodiment of the present invention includes:
  • the receiving unit 401 is configured to receive a session identifier, a flow statistics, and a correspondence between the flow identifier information and the session identifier of the data stream sent by the routing device.
  • the parsing unit 402 is configured to convert the received session identifier into stream identifier information according to the correspondence relationship;
  • the processing unit 403 is configured to perform data stream processing according to the received flow statistics information and the converted flow identification information.
  • the data flow processing process may be: forwarding the flow statistics information and the flow identification information to the NDA.
  • the NDA charges the data stream, or monitors whether the data stream is transmitted normally. The specific method is prior art, and is not mentioned here.
  • the network flow collection system in this embodiment further includes:
  • the information control unit 404 is configured to determine whether the flow identification information or the session identifier in the correspondence between the received flow identifier information and the session identifier already exists, and if yes, the corresponding processing rule is received according to the preset processing rule.
  • the information is merged with the information in the original storage correspondence, or the information in the original storage correspondence is aged.
  • the network flow collection system may include: a receiving unit and a query unit.
  • the receiving unit is configured to receive a session identifier sent by the routing device and flow statistics information of the data flow
  • the query unit is configured to perform correspondence between the session identifier and the flow identifier information stored locally The relationship queries the flow identifier information corresponding to the session identifier.
  • the network stream collecting system further includes: a parsing unit and a processing unit, where the parsing unit is configured to parse the received session identifier according to the correspondence
  • the processing unit is configured to perform data stream processing according to the received flow statistics and the parsed flow identification information.
  • the network flow collection system may further include: an information control unit, whose functions and functions are described in detail above, and details are not described herein again.
  • the communication system may include: a routing device and a network flow collection system, where
  • the routing device is configured to obtain flow identification information and flow statistics information of the received data flow, and send a network flow collection system to the network flow collection system when the flow identification information is queried to the session identifier corresponding to the flow identification information. Sending the session identifier and the flow statistics;
  • the network flow collection system is configured to receive the identifier information and the flow statistics information, and query the flow identifier information corresponding to the session identifier from the correspondence between the pre-stored flow identifier information and the session identifier, and Corresponding processing is performed according to the flow identification information.
  • the routing device when the routing device does not query the session identifier corresponding to the flow identifier information according to the flow identifier information, the routing device is further configured to generate a session identifier according to the flow identifier information, and establish the Corresponding relationship between the flow identifier information and the session identifier, sending the session identifier, the flow statistics information of the data flow, and the corresponding relationship:
  • the network flow collection system is further configured to receive the identifier of the tongue, the flow statistics of the data stream, and the corresponding relationship, and convert the received tongue identifier into stream identifier information according to the received correspondence.
  • the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the method, the communication system and the device for transmitting the data stream information provided by the present invention are described in detail.
  • the specific implementation manner and the application range are In view of the above, the contents of this specification are not to be construed as limiting the invention.

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Description

数据流信息发送的方法、 处理方法、 通讯系统及设备
本申请要求于 2007 年 10 月 16 日提交中国专利局、 申请号为 200710162875. K 发明名称为"一种数据流信息传输的方法、 通讯系统及设备" 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
本发明涉及通讯领域, 尤其涉及一种数据流信息发送的方法、数据流信息 的处理方法、 通讯系统及设备。
背景技术
网络数据流(Netstream )采集技术主要是对网络中的报文进行采样, 通过 网流分析系统(NDA, Netflow Data Analysis )呈现给运营商或者是运营商的 客户, 以方便实现网络规划、 流量工程、 网络检测或对用户进行监控等功能。
现有技术中定义了一种互联网协议 ( IP, Internet Protocol )数据流作为网 络数据流的例子, 并提出固定格式的 VI和 V5版本, 其中 VI版本包括了一 个 IP的七元组信息(源地址, 目标地址, 源端口, 目标端口, 层三协议, TOS 比特, 输入接口), 但由于只提供固定格式的数据流无法满足用户对于数据流 的不同采样要求, 因此现有技术中又提供一种 V9格式的数据流。
现有技术中的一种数据流信息传输方法不限于使用以上所描述的 VI , V5 或 V9格式的数据流, 其具体为: 路由器向网流采集系统(NDC, Netflow Data Collector )发送采样数据流, 同时每次向 NDC发送采样数据流时都将该数据 流的标识信息(例如源 IP, 目的 IP, 源端口号, 目的端口号等) 以及统计信 息(例如报文总数, 采样时间等) 同时发送给 NDC。
在实现本发明的过程中 , 发明人发现现有技术中至少存在如下技术问题: 由于路由器每次向 NDC发送采样数据流都必须同时发送该数据流的标识信息 以及统计信息, 所以浪费了路由器与 NDC之间的带宽, 降低了网络资源利用 率。
发明内容
本发明实施例提供了一种数据流信息发送方法、 数据流信息的处理方法、 通讯系统及设备, 能够提高网络资源利用率。
本发明实施例提供的数据流信息发送方法, 包括: 获取接收到的数据流的 流标识信息以及流统计信息;
若才 据所述流标识信息查询到与所述流标识信息对应的会话标识,则向网 流采集系统 NDC发送所述会话标识以及流统计信息。
本发明实施例提供的数据流信息的处理方法, 包括:接收到路由设备发送 的会话标识及数据流的流统计信息;据本地存储的会话标识与流标识信息之间 的对应关系查询该会话标识对应的流标识信息。
本发明实施例提供的路由设备, 包括:数据流接收单元,用于接收数据流; 获取单元, 用于获取所述接收到的数据流的流标识信息以及流统计信息; 校验 单元, 用于判断是否查询到与所述流标识信息对应的会话标识; 发送单元, 用 于在查询到与所述流标识信息对应的会话标识时,向网流采集系统发送所述查 询到的会话标识以及所述流统计信息。
本发明实施例提供的网流采集系统, 包括: 接收单元, 用于接收路由设备 发送的会话标识及数据流的流统计信息; 查询单元, 用于据本地存储的会话标 识与流标识信息之间的对应关系查询该会话标识对应的流标识信息。
本发明实施例还提供的另一种通讯系统,包括:路由设备和网流采集系统, 其中
所述路由设备, 用于获取接收到的数据流的流标识信息以及流统计信息, 并在 ^居所述流标识信息查询到与所述流标识信息对应的会话标识时,向网流 采集系统发送所述会话标识以及流统计信息;
所述网流采集系统, 用于接收所述 ^舌标识及流统计信息, 并从预先存储 的流标识信息与会话标识之间的对应关系中查询与所述会话标识对应的流标 识信息, 并根据所述流标识信息及流统计信息执行相应的处理。
从以上技术方案可以看出, 本发明实施例具有以下优点:
本发明实施例中,在获取了数据流的流标识信息后, 判断是否能够查询到 与流标识信息对应的会话标识, 若查询到, 则向 NDC发送所述会话标识以及 流统计信息,所以对于流标识相同的数据流,可以不向 NDC重复发送流标识, 而发送该流标识对应的某个会话标识, 该会话标识可以由实际情况进行确定, 其所包含的内容少于流标识信息中所包含的内容, 所以能够节省路由器与 NDC之间的带宽, 从而提高了网络资源利用率。 附图说明
图 1为本发明实施例中数据流信息传输方法实施例流程图;
图 2为本发明实施例中通讯系统实施例示意图;
图 3为本发明实施例中路由设备实施例示意图;
图 4为本发明实施例中网流采集系统实施例示意图。
具体实施方式
本发明实施例提供了一种数据流信息传输的方法(包括数据流信息的发送 方法和数据流信息的处理方法)、通讯系统及设备, 用于提高网络资源利用率。
本发明实施例中,在获取了数据流的流标识信息后, 判断是否能够查询到 与流标识信息对应的会话标识, 若查询到, 则向 NDC发送所述会话标识以及 流统计信息,所以对于流标识相同的数据流,可以不向 NDC重复发送流标识, 而发送该流标识对应的某个会话标识, 该会话标识可以由实际情况进行确定, 其所包含的内容少于流标识信息中所包含的内容, 所以能够节省路由器与 NDC之间的带宽, 从而提高了网络资源利用率。
下面对本发明实施例中的数据流信息传输方法(包括数据流信息的发送方 法和数据流信息的处理方法)进行伴细介绍, 请参阅图 1, 本发明实施例中数 据流信息传输方法实施例包括:
101、 接收数据流;
路由设备接收数据流,本实施例中路由设备可以主动的采集数据流,也可 以接收其他设备发送的数据流, 采集的方式可以与现有技术中的采集方式相 同,此处不作限定,其中,数据流可以为网流( NETFLOW ),或交换流( SFLOW, Switch Flow ), 或配置流(CFLOW, Configure Flow)。
102、 获取数据流的流标识信息以及流统计信息;
本实施例中以 NETFLOW数据流为例进行说明, 可以理解的是, 同样可 以是其他类型的数据流。
本实施例中, 流标识信息包括一个 IP七元组: (源地址, 目标地址, 源端 口, 目标端口, 协议号, TOS比特, 输入接口), 此外根据实际应用中所采取 的数据格式的版本不同 , 还可以另外包括一些相关信息。
本实施例中数据流的流标识信息如下表所示: 表 1
Figure imgf000006_0001
上表中所示的为三条数据流的流标识信息 ,从上表可以看出本实施例中流 标识信息所包含的内容。
本实施例中, 流统计信息可以包括报文总数, 采样时间等数据, 可以理解 的是, 同样还可以根据实际应用的不同添加其他类型的流统计信息。
103、 据流标识信息查询对应的会话标识;
步骤 102获取到数据流的流标识信息之后,路由设备根据获取到的流标识 信息查询是否存在与该流标识信息对应的会话标识。
104、 判断是否查询到对应的会话标识, 若查询到, 则执行步骤 108, 若 未查询到, 则执行步骤 105;
本实施例中, 查询的步骤可以在本地存储的信息中查询,也可以在其他网 元中查询。
105、 当未查询到流标识信息对应的会话标识时, 据流标识信息生成会 话标识;
本实施例中, 当路由设备第一次运行,或者是路由设备接收到第一条数据 流时, 则无法查询到该流标识信息对应的会话标识。
在路由设备开始运行之后, 若接收到数据流,且没有查询到与该数据流的 流标识信息对应的会话标识, 则判定该数据流为一个新的数据流, 需要为其分 配一个会话标识, 具体的分配方式此处不作限定, 可以为随机分配, 也可以为 为整型、 字符型或者浮点型, 为了能够进一步节省路由设备与 NDC之间的带 宽,可以将会话标识定义为占用比特数较少的数据格式,但是考虑到数据重用 的问题, 即在实际应用中可能会出现不同的数据流采用同样的会话标识的情 况, 这种情况会对 NDC的解析造成影响, 从而导致数据处理出现混乱, 例如, 上述表 1中的第一条数据流若按照随机分配的方式分配得到会话标识为 A,若 第二条数据流按照随机分配的方式同样分配得到会话标识 A, 则 NDC可能会 无法对这两条数据流的会话标识进行正确的解析,所以为了能够尽量避免数据 重用的问题, 本实施例中可以将会话标识定义为 "无符号长整型", 即 Unsigned long integer, 则会话标识占用 8个字节, 可以表示 64位正整数, 即可以表示 从 0到 264-1之间的正整数,所以减少了不同的数据流采用相同的^舌标识的 概率。
106、 生成流标识信息与会话标识之间的对应关系;
在根据流标识信息生成会话标识之后 ,路由设备还需要建立流标识信息与 会话标识之间的对应关系,对应关系中包含有不同的流标识信息对应的^舌标 识, 具体如下表所示:
表 2
Figure imgf000007_0001
上表中描述了流标识信息与会话标识之间的对应关系,例如第一条数据流 的流标识信息可以得到会话标识 1001 , 第二条数据流的流标识信息可以得到 会话标识 1002。
107、 向 NDC发送对应关系;
路由设备将生成的流标识信息与会话标识之间的对应关系发送至 NDC保 存。
108、 向 NDC发送会话标识以及流统计信息;
本实施例中, 步骤 108可以分为两种情况:
一、 在步骤 104中查询到对应的会话标识:
若步骤 104中查询到与流标识信息对应的会话标识,则将查询到的会话标 识以及数据流的流统计信息发送至 NDC。 可以理解的是, 若接收到的数据流 的流标识信息和之前的数据流的流标识信息一致,则路由设备可以才 据之前存 储的流标识信息与会话标识之间的对应关系查询到该流标识信息对应的会话 标识。
二、 步骤 104未查询到对应的会话标识:
若步骤 104中未查询到与流标识信息对应的会话标识,则将步骤 106生成 的会话标识以及数据流的流统计信息发送至 NDC。
可以理解的是,对应第二种情况,路由设备可以将步骤 107中的对应关系 与步骤 108中的会话标识同时向 NDC发送,也可以分别发送,此处不作限定。
109、 据对应关系解析会话标识得到流标识信息;
本实施例中, 步骤 109同样可以分为两种情况, 与步骤 108的两种情况对 应:
一、 NDC只接收到会话标识以及流统计信息:
若 NDC只接收到会话标识以及流统计信息, 则根据本地存储的流标识信 息与会话标识之间的对应关系查询该会话标识对应的流标识信息。可以理解的 是, 此种情况下 NDC中存储有路由设备之前发送的流标识信息与会话标识之 间的对应关系。
二、 NDC接收到会话标识, 流统计信息以及流标识信息与会话标识之间 的对应关系:
此种情况下, NDC 该对应关系查询接收到的会话标识对应的流标识 信息。
需要说明的是, 为了能够进一步精确的区别不同的数据流, NDC在接收 到一个新的流标识信息与会话标识之间的对应关系之后,判断该对应关系中的 流标识信息或者会话标识是否已经存在, 若已经存在, 则根据预置的处理规则 对接收到的对应关系进行处理 , 具体的处理方式可以分为:
一、 合并对应关系:
当处理规则指示合并对应关系时, NDC将接收到的对应关系中的内容与 原对应关系中的内容进行合并, 形成一个新的对应关系。
二、 老化原数据:
当处理规则指示老化原数据时, NDC保存新接收到的对应关系, 并将原 对应关系中的数据进行老化, 之后的解析过程以新保存的对应关系为准。
110、 执行其他处理流程。 NDC 解析得到数据流的流标识信息后, 结合接收到的流统计信息执行其 他的处理流程,具体的处理类型不作限定,可以与现有技术中的处理方式相同, 例如用户正在使用 IP电视业务, 则 IP电视服务器需要向路由设备发送相应的 数据流, 路由设备可以将与该数据流相关的会话标识以及流统计信息发送至 NDC , NDC 进行相应处理后, 再由网流分析系统 (NDA, Netstream Data Analyzer )根据接收到的会话标识以及流统计信息对该数据流进行计费或者是 判断当前数据流传输状态是否正常。
上述实施例中,在获取了数据流的流标识信息后, 判断是否能够查询到与 流标识信息对应的会话标识, 若查询到, 则向 NDC发送所述会话标识以及流 统计信息, 所以对于流标识相同的数据流, 可以不向 NDC重复发送流标识, 而发送该流标识对应的某个会话标识, 该会话标识可以由实际情况进行确定, 其所包含的内容少于流标识信息中所包含的内容, 所以能够节省路由器与 NDC之间的带宽, 从而提高了网络资源利用率;
其次, 由于将会话标识的数据类型设置为 Unsigned long integer, 所以能 够尽量避免不同的数据流采用相同的^舌标识的情况, 进而提高了 NDC解析 流标识信息的准确性;
再次, NDC接收到一个新的对应关系之后需要根据预置的处理规则对数 据进行合并或者是老化原数据, 所以可以更精确的区分不同的数据流,从而进 一步提高了 NDC解析流标识信息的准确性。
本实施例中,在接收到数据流之后还可以判断该数据流的连接是否为稳定 连接(例如 IP语音连接、 IP电视连接、 视频点播连接或者热门站点的数据连 接), 若为稳定连接, 则判断是否能根据该数据流的流标识信息查询到对应的 会话标识。 由于稳定连接的数据流一般在某段时间内的流标识信息都是相同 的, 所以可以提高数据流信息的传输效率, 可以理解的是, 判断是否为稳定连 接的方式为现有技术, 例如, 稳定的连接的标志可以为: 预置时间内发送数据 流的数据源固定, 或采用实时流协议传输数据流, 或数据类型是否一致等, 根 据实际的应用情况 ,上述的标志满足一个或多个时可以认为该数据流的连接为 稳定的连接。
此外, 若路由设备接收到连接结束信息, 则需要对该连接结束信息对应的 会话标识进行老化, 并通知 NDC对包含该会话标识的对应关系进行老化, 具 体的连接结束信息可以为 TCP的 fm或者 RST bit中标识的内容, 或者是某条 数据流的 inactive时间超时。
在上述数据流信息的传输过程中, 路由设备可以与 NDC之间建立会话用 于传输相关的信息 ,例如路由设备将会话标识以及流统计信息作为会话信息发 送至 NDC, 可以理解的是, 在会话过程中, 为了保持该会话连接, 路由设备 需要采用定时间隔或报文间隔方式向 NDC发送会话信息, NDC接收路由设备 发送的会话信息。
下面对本发明实施例中的通讯系统进行介绍, 请参阅图 2, 本发明实施例 中通讯系统实施例包括:
路由设备 201, 用于 据接收到的数据流的流标识信息生成会话标识, 建 立流标识信息与会话标识之间的对应关系,发送会话标识、数据流的流统计信 息以及对应关系;
网流采集系统 202, 用于接收^舌标识、 数据流的流统计信息以及对应关 系, 根据接收到的对应关系将接收到的会话标识转换为流标识信息。
下面对具体参与通讯过程的网元进行伴细介绍,可以理解的是, 下述介绍 的网元均可用于上述通讯系统中,或者也可以应用于其他通讯系统中,或者单 独存在。
请参阅图 3, 本发明实施例中路由设备实施例包括:
数据流接收单元 301, 用于接收数据流;
获取单元 302, 用于获取接收到的数据流的流标识信息以及流统计信息; 校验单元 303, 用于判断是否查询到与所述流标识信息对应的会话标识; 发送单元 304, 用于在查询到与所述流标识信息对应的会话标识时, 向网 流采集系统发送所述查询到的会话标识以及所述流统计信息。
可以理解的是,在上述单元的基础上,本发明实施例中的路由设备实施例 还可以包括:
连接判断单元 305, 用于当未查询到与所述流标识对应的会话标识时, 判 断所述数据流的连接是否为稳定连接;稳定连接的数据流一般在某段时间内的 流标识信息都是相同的, 例如 IP语音连接, IP电视连接, 视频点播连接或者 热门站点的数据连接。
会话标识生成单元 306, 用于当所述数据流的连接为稳定连接时, 根据所 述数据流的流标识信息生成会话标识;
对应关系控制单元 307, 用于在会话标识生成单元根据所述数据流的流标 识信息生成会话标识后,建立流标识信息与所述生成的会话标识之间的对应关 系, 向网流采集系统发送所述对应关系。
同样, 本发明实施例中的路由设备实施例还可以包括:
老化控制单元 308, 用于当接收到连接结束信息时对所述连接结束信息对 应的会话标识进行老化。
^舌控制单元 309, 用于根据所述 ^舌标识建立与网流采集系统之间的会 话, 并采用定时间隔或报文间隔方式向网流采集系统发送会话信息。
请参阅图 4, 本发明实施例中网流采集系统实施例包括:
接收单元 401, 用于接收路由设备发送的数据流的会话标识、 流统计信息 以及流标识信息与会话标识之间的对应关系;
解析单元 402, 用于根据所述对应关系将接收到的会话标识转换为流标识 信息;
处理单元 403 , 用于根据接收到的流统计信息以及转换得到的流标识信息 进行数据流处理,本实施例中,数据流处理的过程可以是将流统计信息以及流 标识信息转发至 NDA, 由 NDA对该数据流进行计费,或者是监控数据流的传 输是否正常, 具体手段为现有技术, 此处不再赞述。
可以理解的是, 为了使得网流采集系统能够精确的区别不同的数据流, 则 本实施例中的网流采集系统还包括:
信息控制单元 404, 用于判断接收到的流标识信息与会话标识的对应关系 中的流标识信息或会话标识是否已经存在, 若已经存在, 则根据预置的处理规 则将接收到对应关系中的信息与原存储对应关系中的信息进行合并,或者对原 存储对应关系中的信息进行老化。
在一种优选的实施例中, 所述网流采集系统可以包括: 接收单元和查询单 元。 其中, 所述接收单元, 用于接收路由设备发送的会话标识及数据流的流统 计信息; 所述查询单元, 用于据本地存储的会话标识与流标识信息之间的对应 关系查询该会话标识对应的流标识信息。
如果接收单元还接收到路由设备发送的对应关系,则所述网流采集系统还 包括: 解析单元和处理单元, 其中, 所述解析单元, 用于根据所述对应关系将 接收到的会话标识解析为对应的流标识信息; 所述处理单元, 用于根据接收到 的流统计信息以及解析得到的流标识信息进行数据流处理。
所述网流采集系统还可以包括: 信息控制单元, 其功能和作用详见上述, 在此不再赘述。
在一种优选的实施例中, 所述通讯系统, 可以包括: 路由设备和网流采集 系统, 其中
所述路由设备, 用于获取接收到的数据流的流标识信息以及流统计信息, 并在 ^居所述流标识信息查询到与所述流标识信息对应的会话标识时,向网流 采集系统发送所述会话标识以及流统计信息;
所述网流采集系统, 用于接收所述 ^舌标识及流统计信息, 并从预先存储 的流标识信息与会话标识之间的对应关系中查询与所述会话标识对应的流标 识信息, 并根据所述流标识信息执行相应的处理。
优选的,在所述路由设备根据所述流标识信息没有查询到与所述流标识信 息对应的会话标识时, 所述路由设备,还用于根据所述流标识信息生成会话标 识, 建立所述流标识信息与会话标识之间的对应关系, 发送所述会话标识、 所 述数据流的流统计信息以及所述对应关系:
所述网流采集系统,还用于接收所述^舌标识、所述数据流的流统计信息 以及所述对应关系 ,根据接收到的对应关系将接收到的^舌标识转换为流标识 信息。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤 是可以通过程序来指令相关的硬件完成或由软件完成,所述的程序可以存储于 一种计算机可读存储介质中, 该程序在执行时, 包括如下步骤:
根据接收到的数据流获取所述数据流的流标识信息以及流统计信息; 判断是否查询到与所述流标识信息对应的会话标识, 若查询到, 则向网流 采集系统 NDC发送所述会话标识以及流统计信息。
上述提到的存储介质可以是只读存储器, 磁盘或光盘等。 以上对本发明所提供的一种数据流信息传输的方法、通讯系统及设备进行 了详细介绍, 对于本领域的一般技术人员, 依据本发明实施例的思想, 在具体 实施方式及应用范围上均会有改变之处, 综上所述,本说明书内容不应理解为 对本发明的限制。

Claims

权 利 要 求
1、 一种数据流信息发送方法, 其特征在于, 包括:
获取接收到的数据流的流标识信息以及流统计信息;
若才 据所述流标识信息查询到与所述流标识信息对应的会话标识,则向网 流采集系统 NDC发送所述会话标识以及所述流统计信息。
2、 根据权利要求 1所述的方法, 其特征在于, 若未查询到与所述流标识 信息对应的会话标识, 则所述方法还包括:
判断所述数据流的连接是否为稳定连接, 若为稳定连接, 则根据所述数据 流的流标识信息生成对应的会话标识。
3、 根据权利要求 2所述的方法, 其特征在于, 在所述生成对应的会话标 识的步骤之后, 所述方法还包括:
建立所述流标识信息与所述 据流标识信息生成对应的会话标识之间的 对应关系;
向 NDC发送所述对应关系。
4、 根据权利要求 2或 3中所述的方法, 其特征在于, 所述方法还包括: 根据所述会话标识建立与 NDC之间的会话;
采用定时间隔或 文间隔方式向 NDC发送^舌信息。
5、 根据权利要求 1所述的方法, 其特征在于, 所述方法还包括: 判断是否接收到 NDC发送的连接结束信息, 若接收到, 则对所述连接结 束信息对应的会话标识进行老化。
6、 根据权利要求 1所述的方法, 其特征在于, 所述数据流为网流, 或交 换流, 或配置流。
7、 一种数据流信息处理方法, 其特征在于, 包括:
接收到路由设备发送的会话标识及数据流的流统计信息;
据本地存储的会话标识与流标识信息之间的对应关系查询该会话标识对 应的流标识信息。
8、 根据权利要求 7所述的方法, 其特征在于, 如果还接收到路由设备发 送的对应关系, 则所述方法还包括:
根据所述对应关系将接收到的会话标识解析为对应的流标识信息 ,并对接 收到的所述流统计信息以及解析得到的流标识信息进行数据流处理。
9、 根据权利要求 8所述的方法, 其特征在于, 在将接收到的会话标识解 析为对应的流标识信息的步骤之前, 所述方法还包括:
判断接收到所述对应关系中对应的流标识信息或会话标识是否已经存在, 若是,则根据预置的处理规则将接收到所述对应关系中的信息与原存储对应关 系的信息进行合并, 或者对原存储对应关系中的信息进行老化。
10、根据权利要求 7至 9中任一项所述的方法, 其特征在于, 所述方法还 包括:
接收路由设备根据所述会话标识传输用于建立会话的信息,并接收路由设 备发送的会话信息。
11、 一种路由设备, 其特征在于, 包括:
数据流接收单元, 用于接收数据流;
获取单元, 用于获取所述接收到的数据流的流标识信息以及流统计信息; 校验单元, 用于判断是否查询到与所述流标识信息对应的会话标识; 发送单元, 用于在查询到与所述流标识信息对应的会话标识时, 向网流采 集系统发送所述查询到的会话标识以及所述流统计信息。
12、 根据权利要求 11所述的路由设备, 其特征在于, 所述路由设备还包 括:
连接判断单元, 用于在未查询到与所述流标识对应的会话标识时, 判断所 述数据流的连接是否为稳定连接;
会话标识生成单元, 用于在所述数据流的连接为稳定连接时,根据所述数 据流的流标识信息生成^舌标识。
13、 根据权利要求 12所述的路由设备, 其特征在于, 所述路由设备还包 括:
对应关系控制单元,用于建立流标识信息与所述生成的会话标识之间的对 应关系, 向网流采集系统发送所述对应关系。
14、 根据权利要求 13所述的路由设备, 其特征在于, 所述路由设备还包 括:
老化控制单元,用于当接收到连接结束信息时对所述连接结束信息对应的 会话标识进行老化。
15、根据权利要求 11至 14中任一项所述的路由设备, 其特征在于, 所述 路由设备还包括:
^舌控制单元, 用于根据所述会话标识建立与网流采集系统之间的^舌, 并采用定时间隔或报文间隔方式向网流采集系统发送^舌信息。
16、 一种网流采集系统, 其特征在于, 包括:
接收单元, 用于接收路由设备发送的会话标识及数据流的流统计信息; 查询单元,用于据本地存储的会话标识与流标识信息之间的对应关系查询 该会话标识对应的流标识信息。
17、 根据权利要求 16所述的网流采集系统, 其特征在于, 如果接收单元 还接收到路由设备发送的对应关系, 则所述网流采集系统还包括:
解析单元,用于根据所述对应关系将接收到的会话标识解析为对应的流标
*只 §息;
处理单元,用于根据接收到的流统计信息以及解析得到的流标识信息进行 数据流处理。
18、 根据权利要求 17所述的网流采集系统, 其特征在于, 所述网流采集 系统还包括:
信息控制单元,用于判断接收到的流标识信息与会话标识的对应关系中的 流标识信息或会话标识是否已经存在, 若已经存在, 则根据预置的处理规则将 接收到对应关系中的信息与原存储对应关系中的信息进行合并,或者对原存储 对应关系中的信息进行老化。
19、 一种通讯系统, 其特征在于, 包括: 路由设备和网流采集系统, 其中 所述路由设备, 用于获取接收到的数据流的流标识信息以及流统计信息, 并在 ^居所述流标识信息查询到与所述流标识信息对应的会话标识时,向网流 采集系统发送所述会话标识以及流统计信息;
所述网流采集系统, 用于接收所述 ^舌标识及流统计信息, 并从预先存储 的流标识信息与会话标识之间的对应关系中查询与所述会话标识对应的流标 识信息, 并根据所述流标识信息及流统计信息执行相应的处理。
20、 根据权利要求 19所述的通讯系统, 其特征在于, 在所述路由设备根 据所述流标识信息没有查询到与所述流标识信息对应的会话标识时, 所述路由设备,还用于根据所述流标识信息生成会话标识, 建立所述流标 识信息与会话标识之间的对应关系,发送所述会话标识、所述数据流的流统计 信息以及所述对应关系:
所述网流采集系统,还用于接收所述^舌标识、所述数据流的流统计信息 以及所^应关系 ,根据接收到的对应关系将接收到的^舌标识转换为流标识 信息。
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