WO2012119452A1

WO2012119452A1 - Method, apparatus and network device for determining network traffic

Info

Publication number: WO2012119452A1
Application number: PCT/CN2011/081030
Authority: WO
Inventors: 刘奇峰; 王杰; 庄丽君
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-03-09
Filing date: 2011-10-20
Publication date: 2012-09-13
Also published as: CN102143071A; CN102143071B

Abstract

Disclosed are a method, apparatus and network device for determining network traffic; the method determines the network traffic of an interface by obtaining the data forwarding rate of each interface at each collection time point within a statistical period, storing the obtained data forwarding rate to a storage space, and determining the network traffic of the interface according to each data forwarding rate stored in the storage space. According to the present invention, the data forwarding rate of the interface at each collection time point within the statistical period is obtained and the network traffic is determined according to the obtained data forwarding rate, thus able to effectively prevent the impact caused by short-term burst data on the accuracy of network traffic determination, thereby improving the accuracy of network traffic determination.

Description

Method, device and network device for determining network traffic

The present invention relates to the field of data packet switching technologies, and in particular, to a network traffic determining method, apparatus, and network device. Background technique

For network devices that forward data such as routers and switches, the data forwarding rate is generally expressed in bits/s. That is, when the interface identifying a network device is 100M, the interface of the network device can support forwarding of 100 Mbits per second. rate. However, in reality, the data is transmitted in the form of a data packet, so the identification may be biased by the above data forwarding rate. This is because when a packet transmitted by an interface is mostly 1024 bytes, the interface can reach a rate of 100 Mbit/s, but when most of the packets transmitted by the interface are 64 bytes, the interface only Can reach a rate of 50 Mbit / s.

Therefore, in order to accurately identify the data forwarding rate of an interface, the data forwarding rate can be identified by pps, which is the number of packets that can be forwarded per second. For example, when the data forwarding rate of an interface is 30 Mpps, the interface can forward 30 M packets per second, and the length of each packet is identified by the minimum length of the packet. For Ethernet, the data is The packet is 64 bytes, and the packet is 40 bytes for the optical port (Packet over SDH, POS).

In addition, with the development of data services, users have higher and higher requirements on the data forwarding rate of network devices that perform data forwarding. However, as the data forwarding rate increases, the price of network devices will increase accordingly. Therefore, in order to improve the rate of data forwarding and reduce the cost of the system, data traffic is counted through the installed network equipment to provide a basis for subsequent network equipment upgrades. However, in the prior art, when calculating network traffic, it is generally determined according to the number of bytes of data packets forwarded at each time point, but for data transmission, the burstiness is large, that is, at a certain time point. The number of bytes transmitted by the network device may be relatively large, but at another point in time, the number of bytes transmitted by the network device may be less, so the statistical method of the network traffic cannot be accurately and effectively determined. Network traffic for network devices. Summary of the invention

In view of this, the embodiments of the present invention provide a method, a device, and a network device for determining network traffic, which are used to solve the problem that the prior art cannot accurately and effectively determine network traffic.

A method for determining network traffic according to an embodiment of the present invention includes:

For each interface of the network device, the data forwarding rate of the interface at each collection time in the statistical period is obtained in each statistical period of the network traffic;

And storing the obtained data forwarding rate into a storage space for the interface; determining network traffic of the interface according to each data forwarding rate stored in the storage space.

A network traffic determining apparatus provided by an embodiment of the present invention includes:

An obtaining module, configured to obtain, for each interface of the network device, a data forwarding rate of the interface at each collection time in the statistics period in each statistical period of the network traffic;

a storage module, configured to store the obtained data forwarding rate into a storage space for the interface;

And a determining module, configured to determine network traffic of the interface according to each data forwarding rate stored in the storage space.

A network device provided by an embodiment of the present invention includes the foregoing device.

An embodiment of the present invention provides a method, a device, and a network device for determining a network traffic. The method obtains a data forwarding rate of each interface at each collection time in a statistical period, and saves the obtained data forwarding rate to the storage space. , according to each data saved in the storage space The forwarding rate, which determines the network traffic of the interface. In the embodiment of the present invention, the data forwarding rate of the interface is obtained at each collection time in the statistics period, and the network traffic of the interface is determined according to each data forwarding rate obtained, so that the short-term burst data pair can be effectively avoided. The impact of network traffic accuracy, thereby improving the accuracy of the determined network traffic. DRAWINGS

FIG. 1 is a flowchart of determining network traffic according to an embodiment of the present invention;

2 is a process of determining network traffic when the storage space is not infinite, according to an embodiment of the present invention;

FIG. 3 is a specific implementation process for determining network traffic according to an embodiment of the present invention; FIG. 4 is another specific implementation process for determining network traffic according to an embodiment of the present invention; FIG. Schematic diagram of the structure of the flow determining device. detailed description

In order to improve the accuracy of determining the network traffic, the embodiment of the present invention provides a method for determining network traffic, and a corresponding device and a network device, where the data forwarding rate of the interface at each collection time is obtained by obtaining the statistics period. According to the obtained data forwarding rate, the network traffic of the interface is determined, so that the impact of the short-term burst data on determining the accuracy of the network traffic can be effectively avoided, thereby improving the accuracy of the determined network traffic.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments in order to make the present invention. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

FIG. 1 is a flowchart of determining network traffic according to an embodiment of the present invention, where the process includes the following steps:

S101: For each interface of the network device, obtain the data forwarding rate of the interface at each collection time in the statistics period in each statistical period of the network traffic. Each statistical period includes at least two acquisition moments.

The network device can be a router or a switch.

In addition, when obtaining the data forwarding rate of the interface at each collection time, the data forwarding rate of the interface may be obtained in bit/s, or the data forwarding rate of the interface may be obtained in units of pps. At the same time, when the data forwarding rate of the interface is obtained, the data forwarding rate of all the data packets forwarded by the interface may be obtained according to all the data packets forwarded by the interface, or may be obtained for one type or some types of data packets. The interface forwards the data forwarding rate of the one or several data packets.

S102: Store the obtained data forwarding rate into a storage space for the interface. A corresponding storage space can be set for each interface in the network device, and used to store each data forwarding rate obtained.

And storing the obtained data forwarding rate in the storage space for the interface, specifically: when the storage space is infinite, directly storing the data forwarding rate to a storage space for the interface;

Otherwise, in an alternative manner, the obtained data forwarding rate is stored in a storage space for the interface.

S103: Determine network traffic of the interface according to each data forwarding rate stored in the storage space.

The determining the network traffic of the interface includes:

Determining network traffic of the interface according to each data forwarding rate stored in the storage space and obtaining an acquisition time of the data forwarding rate.

In the embodiment of the present invention, network traffic of the interface may be separately determined for each interface in the network device. When determining the network traffic of each interface, you can set the corresponding statistics period and collection time according to each interface. Alternatively, you can set the same statistics period and collection time for all interfaces. When each interface is set to correspond to the statistical period and After the collection time, the network traffic of the interface can be determined for the statistical period and the collection time. For each interface, the process of determining the network traffic of the interface is the same.

Specifically, when determining the network traffic of the interface, the obtained data forwarding rate of the interface at each collection time may be stored in a storage space for the interface. When the storage space is infinite, the obtained data forwarding rate can be directly stored into the storage space, where the infinite size is for the number of bytes included in the data forwarding rate, that is, the storage space is stored for a long time. The data forwarding rate of the interface is not saturated. The longer time may be the time corresponding to the lifetime of the network device.

When the storage space is not infinite, when the obtained data forwarding rate is stored in the storage space, an alternative manner may be adopted, and the data forwarding rate is stored in a storage space for the interface. Specifically, in an alternative manner, storing the obtained data forwarding rate in the storage space for the interface, including: determining whether the storage space is saturated; and when determining saturation, using the acquired data forwarding The rate replaces any data forwarding rate stored in the storage space, and is stored in the storage space; otherwise, the obtained data forwarding rate is directly stored into the storage space for the interface.

FIG. 2 is a process of determining network traffic when the storage space is not infinite, according to an embodiment of the present invention, the process includes the following steps:

S201: For each interface of the network device, obtain the data forwarding rate of the interface at each collection time in the statistics period in each statistical period of the network traffic.

S202: Determine whether the storage space for the interface is saturated. If the determination result is yes, proceed to step S203; otherwise, proceed to step S204.

S203: Replace any data forwarding rate stored in the storage space with the obtained data forwarding rate, and store the data forwarding rate in the storage space, and then proceed to step S205.

S204: The obtained data forwarding rate is directly stored into the storage space for the interface, and then step S205 is performed. S205: Determine network traffic of the interface according to each data forwarding rate stored in the storage space.

In order to facilitate the determination of the network traffic, in the embodiment of the present invention, when the data forwarding rate of the interface is obtained, and the data forwarding rate is stored in the storage space for the interface, the record is obtained for each saved data forwarding rate. The acquisition time of the data forwarding rate, in general, the acquisition time may be replaced by the acquisition time. Specifically, when determining the network traffic of the interface according to each data forwarding rate stored in the storage space, each data forwarding rate stored in the storage space and the acquisition time of each data forwarding rate may be used. Determine the network traffic for this interface. And determining, according to each statistical period, the network traffic of the interface in the statistics period, where determining the network traffic of the interface in the statistics period, including: according to each collection time in the statistical period, The data forwarding rate obtained at each collection time stored in the storage space is determined, and the network traffic of the interface in the statistical period is determined.

Specifically, when determining the network traffic of the interface according to each data forwarding rate stored in the storage space and obtaining the data forwarding rate, determining an average of each data forwarding rate stored in the storage space. And determining, according to the obtained acquisition time of each data forwarding rate, a maximum value and a minimum value of the obtaining time, and determining a time period for performing traffic statistics according to the determined difference between the maximum value and the minimum value of the obtaining time, according to The average of the data forwarding rate determined and the time period of the traffic statistics are determined to determine the network traffic of the interface.

When determining the network traffic of the interface in the statistics period, the data forwarding rate of the acquisition time in the statistics period is first searched, and the average value of the data forwarding rate is determined according to the found data forwarding rate. Determining, according to each acquired time, a maximum value and a minimum value of the acquisition time, and determining a time period corresponding to the difference between the maximum value and the minimum value, according to the determined average value of the data forwarding rate, and the time period , determine the network traffic of the interface during the statistical period. In order to ensure the accuracy of the network traffic determination of the interface, in the embodiment of the present invention, when the data forwarding rate is used to replace any data forwarding rate stored in the storage space, the method further includes: determining the storage space. The time at which each data forwarding rate is stored in the storage time; the data forwarding rate obtained in the storage space is replaced with the data forwarding rate in the storage space.

That is, it can be considered that the storage space for each interface corresponds to one slip interval, and the slip region includes a plurality of storage units, and each storage unit stores each data forwarding rate stored in chronological order. For example, when the slip interval includes m (m is an integer greater than 1) storage units, each storage unit stores a data forwarding rate, and the number of the m storage units is l~m, respectively, and the number is l~ The data transfer rate of the interface acquired from the first acquisition time to the mth acquisition time is sequentially stored in each storage unit of m. When the m+1th acquisition time comes, and the data forwarding rate of the interface at the time of the m+1th acquisition is obtained, it can be known that the first m+1 of the acquisition time corresponding to the first acquisition time in the storage space is obtained. The data forwarding rate at the acquisition time is stored in the storage unit numbered 1.

When the data forwarding rate of the earliest acquisition time in the storage is replaced by the foregoing method, the data forwarding rate stored in the storage space is ensured, and the data forwarding rate obtained at the time when the network traffic is determined and the time difference is small, so The time period for determining the network traffic is small, so that when the network traffic is determined later, the recently obtained data forwarding rate is used for corresponding calculation to ensure the accuracy of the determined network traffic.

FIG. 3 is a specific implementation process for determining network traffic according to an embodiment of the present invention, where the process includes the following steps:

S301: For each interface of the network device, obtain the data forwarding rate of the interface at each collection time in the statistics period in each statistical period of the network traffic.

S302: Determine whether the storage space for the interface is saturated. If the determination result is yes, proceed to step S303; otherwise, proceed to step S304. S303: Determine an acquisition time of each data forwarding rate stored in the storage space, and replace the data forwarding rate with the earliest acquisition time in the storage space by using the acquired data forwarding rate, and then proceed to step S305.

S304: The obtained data forwarding rate is directly stored in the storage space for the interface, and then step S305 is performed.

S305: Determine network traffic of the interface according to each data forwarding rate stored in the storage space.

In addition, determining the network traffic for this interface includes:

The network traffic of the interface is determined as the network traffic of the interface; or, the determined network traffic of the interface is compared with the saved threshold interval of the network traffic of the interface, and the network traffic of the interface is compared according to the result of the comparison. The threshold interval is updated, and the threshold interval of the network traffic is used as the determined network traffic of the interface.

That is, in the embodiment of the present invention, after the network traffic of the interface is determined, the network traffic may be temporarily saved in the corresponding storage space, and the network traffic is provided to the user when the user uses the network traffic. In addition, in order to further ensure the accuracy of the provided network traffic, in the embodiment of the present invention, the corresponding threshold interval is saved in the storage space, and updating the threshold interval of the network traffic of the interface includes: determining the determined network traffic of the interface The corresponding minimum and maximum values of the threshold interval are compared; when the network traffic is less than the minimum value or greater than the maximum value, the threshold interval of the network traffic of the interface is updated.

The threshold interval corresponds to a maximum value and a minimum value. In the initialization state, the maximum value and the minimum value corresponding to the threshold interval are both 0. After the network traffic of the interface is obtained, the network traffic is updated by using the foregoing method. .

FIG. 4 is another specific implementation process for determining network traffic according to an embodiment of the present invention, where the process includes the following steps:

S401: for each interface of the network device, in each statistical period of network traffic, The data forwarding rate of the interface at each collection time in the statistics period is taken.

S402: Determine whether the storage space for the interface is saturated. When the determination result is yes, proceed to step S403; otherwise, proceed to step S404.

S403: Determine an acquisition time of each data forwarding rate stored in the storage space, and replace the data forwarding rate of the earliest acquisition time in the storage space by using the acquired data forwarding rate, and then proceed to step S405.

S404: The obtained data forwarding rate is directly stored in the storage space for the interface, and then step S405 is performed.

S405: Determine network traffic of the interface according to each data forwarding rate stored in the storage space.

S406: Comparing the determined network traffic of the interface with a corresponding minimum value and a maximum value of the threshold interval, determining whether the network traffic is greater than a maximum value or a minimum value, and when one of the solutions exists, performing step S407; otherwise, performing step S407; Go to step S408.

S407: When the determined network traffic is greater than the maximum value, the determined network traffic is used to update the maximum value of the threshold interval. When the determined network traffic is less than the minimum value, the determined network traffic is used to determine the minimum value of the threshold interval. Update.

S408: Keep the network traffic threshold interval unchanged.

When the user needs to obtain the network traffic, the network traffic threshold interval is provided to the user as the determined network traffic of the interface.

The above process is described by taking the storage space of the data forwarding rate as non-infinite. For example, when the storage space is infinite, the steps S401 and S404 to S408 may be directly performed.

FIG. 5 is a schematic structural diagram of a network traffic determining apparatus according to an embodiment of the present invention, where the apparatus includes:

Obtaining the data forwarding rate of the interface at each collection time in the statistical period in each statistical period of the network traffic for each interface of the network device; a storage module 52, configured to store the obtained data forwarding rate into a storage space for the interface;

The determining module 53 is configured to determine network traffic of the interface according to each data forwarding rate stored in the storage space.

The storage module 52 is specifically configured to directly store the data forwarding rate to a storage space for the interface when the storage space is infinite; otherwise, the data forwarding rate to be obtained is replaced by an alternative manner. Stored in the storage space for the interface.

The storage module 52 is specifically configured to determine whether the storage space is saturated. When the saturation is determined, any data forwarding rate stored in the storage space is replaced by the acquired data forwarding rate, and stored in the storage. In space, otherwise, the obtained data forwarding rate is directly stored into the storage space for the interface.

The storage module 52 is specifically configured to determine an acquisition time of each data forwarding rate stored in the storage space, and replace the data forwarding rate of the earliest acquisition time in the storage space by using the acquired data forwarding rate.

The determining module 53 is specifically configured to determine network traffic of the interface according to each data forwarding rate stored in the storage space and obtain an acquisition time of the data forwarding rate.

The determining module 53 is specifically configured to use the determined network traffic of the interface as the determined network traffic of the interface; or, compare the determined network traffic of the interface with a threshold interval of the saved network traffic of the interface. And updating the threshold interval of the network traffic of the interface according to the comparison result, and using the threshold interval of the network traffic as the determined network traffic of the interface.

The determining module 53 is specifically configured to compare network traffic of the interface with a corresponding minimum value and maximum value of the threshold interval; when the network traffic is less than a minimum value or greater than a maximum value, network traffic of the interface The threshold interval is updated.

The specific device may be located in a network device such as a switch or a router, and specifically may be located in a central processing unit (CPU), a network processor, a single chip microcomputer, and a field programmable gate array of the network device. Column (FPGA) is medium.

In addition, an embodiment of the present invention further provides a network device, where the network device includes the device shown in FIG.

An embodiment of the present invention provides a method, a device, and a network device for determining a network traffic. The method obtains a data forwarding rate of each interface at each collection time in a statistical period, and saves the obtained data forwarding rate to the storage space. The network traffic of the interface is determined according to each data forwarding rate saved in the storage space. In the embodiment of the present invention, the data forwarding rate of the interface is obtained at each collection time in the statistics period, and the network traffic of the interface is determined according to each data forwarding rate obtained, so that short-term burst data can be effectively avoided. Determine the impact of network traffic accuracy, thereby improving the accuracy of the determined network traffic.

The above description shows and describes a preferred embodiment of the present invention, but as described above, it should be understood that the present invention is not limited to the forms disclosed herein, and should not be construed as Other combinations, modifications, and environments are possible and can be modified by the teachings or related art or knowledge within the scope of the inventive concept described herein. All changes and modifications made by those skilled in the art are intended to be within the scope of the appended claims.

Claims

Claim

A method for determining network traffic, characterized in that it comprises:

2. The method of claim 1, wherein storing the obtained data forwarding rate into a storage space for the interface comprises:

When the storage space is infinite, the data forwarding rate is directly stored to a storage space for the interface;

The method of claim 2, wherein the storing the obtained data forwarding rate in the storage space for the interface comprises:

Determining whether the storage space is saturated;

When the saturation is determined, determining an acquisition time of each data forwarding rate stored in the storage space, and using the acquired data forwarding rate, replacing the data forwarding rate of the earliest acquisition time in the storage space;

When it is determined that the storage space is not saturated, the acquired data forwarding rate is directly stored into a storage space for the interface.

The method according to any one of claims 1 to 3, wherein determining the network traffic of the interface comprises:

5. The method of claim 1, wherein determining network traffic of the interface comprises:

And determining the network traffic of the interface as the network traffic of the interface; or comparing the determined network traffic of the interface with a threshold interval of the saved network traffic of the interface, according to the comparison result The threshold interval of the network traffic of the interface is updated, and the threshold interval of the updated network traffic is used as the determined network traffic of the interface.

6. The method according to claim 5, wherein updating the threshold interval of the network traffic of the interface according to the comparison result comprises:

Comparing the determined network traffic of the interface with a corresponding minimum and maximum value of the threshold interval;

When the network traffic is less than the minimum value or greater than the maximum value, the threshold interval of the network traffic of the interface is updated.

7. A network traffic determining device, the device comprising:

The device according to claim 7, wherein the storage module is specifically configured to directly store the data forwarding rate to a storage space for the interface when the storage space is infinite; , determining whether the storage space is saturated;

When saturated, determining an acquisition time of each data forwarding rate stored in the storage space, using the acquired data forwarding rate, replacing the data forwarding rate of the earliest acquisition time in the storage space, when not saturated, Directly storing the obtained data forwarding rate to The storage space of the interface.

The device according to any one of claims 7 to 8, wherein the determining module is specifically configured to acquire, according to each data forwarding rate stored in the storage space, and obtain the data forwarding rate. At the moment, determine the network traffic of the interface.

A network device, characterized in that the network device comprises the device according to any one of claims 7 to 9.