WO2016123907A1

WO2016123907A1 - Method and apparatus for detecting repeated simulation packet

Info

Publication number: WO2016123907A1
Application number: PCT/CN2015/084128
Authority: WO
Inventors: 曹晶; 王岩; 丁文艳; 陈荣鑫
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-02-06
Filing date: 2015-07-15
Publication date: 2016-08-11
Also published as: CN105991359A

Abstract

A method and apparatus for detecting a repeated simulation packet. The method for detecting a repeated simulation packet comprises: acquiring a first simulation packet received within a first time period and a second simulation packet received within a second time period; detecting a serial number field value in a pseudo-wire control word of the first simulation packet and a serial number field value in a pseudo-wire control word of the second simulation packet; and comparing the serial number field value in the pseudo-wire control word of the first simulation packet with the serial number field value in the pseudo-wire control word of the second simulation packet, and when the second simulation packet has the same serial number field value as that of the first simulation packet, determining that the second simulation packet has a repeated simulation packet with at least part of the simulation packet of the first simulation packet. By way of detecting a repeated simulation packet transmitted in a network environment, and deleting the repeated simulation packet after detecting same, the reliability of a network can be greatly improved.

Description

Method and device for detecting repeated simulation message

Technical field

This paper relates to the field of communication technologies, and in particular, to a method and apparatus for detecting repeated simulation messages.

Background technique

Today's society is a highly developed information society. It requires communication networks to provide a variety of telecommunication services. The amount of information transmitted, exchanged, and processed through communication networks will continue to increase. This requires modernized communication networks to be digitized and integrated. Intelligent and personal development.

The transmission system is an important part of the communication network, and the quality of the transmission system directly restricts the development of the communication network. One of the key points of the information highways that are being developed by countries all over the world is to build a large-capacity transmission optical network, continuously increase the signal rate on the transmission line, and widen the transmission frequency band, just like an ever-expanding highway that can accommodate a large number of traffic. At the same time, users hope that the transmission network can have a worldwide interface standard, which enables each user in our global village to communicate conveniently and conveniently at any time and place.

The traditional transmission network is formed by the PDH (Plesiochronous Digital Hierarchy) transmission system. Because of its multiplexed mode, it can not meet the requirements of large-capacity transmission of signals. In addition, the regional specifications of the PDH system also increase the difficulty of network interconnection. . Therefore, in today's communication network to large-capacity, standardization development, PDH transmission system has become a bottleneck of modern communication networks, restricting the development of transmission networks to higher speeds. The SDH transmission system evolved from the PDH transmission system, so it has the unparalleled advantages of the PDH system. It is a brand new generation transmission system different from the PDH system, and it has undergone fundamental changes in the technical system compared with PDH. The core of the SDH concept is to form a digital communication network from a unified national telecommunication network and international interoperability. It is an important part of the Integrated Services Digital Network (ISDN), especially the Broadband Integrated Services Digital Network (B-ISDN). Different from the traditional PDH system, the network formed by SDH is a highly unified, standardized and intelligent network. It adopts a globally unified interface to achieve compatibility between multi-vendor environments of the device, and achieves efficient and coordinated management and operation throughout the entire network, enabling flexible networking and service scheduling, realizing network self-healing functions, and improving network resource utilization. . And because the maintenance function is enhanced, the operation and maintenance costs of the equipment are greatly reduced.

However, when it comes to devices and systems that use SDH and PDH technologies that need to use simulated packets for service transmission, especially when repetitive emulation packets are transmitted, bandwidth is limited and useful packets are discarded. As a result, the quality of service transmission is degraded. As shown in FIG. 1, the 2G or 3G services of the accessed base station are transmitted through an MPLS (Multi Protocol Label Switching) network. From the perspective of network stability, the concept of protection or backup must be introduced in the networking process. Currently popular are tunnel protection, pseudowire protection, and port protection. The emulation packet is transmitted in the network environment where these protections are used. It is bound to be copied. Once the copied emulation message continues to be transmitted in the network and sent to the receiving device, the following situations may occur:

(1) The port bandwidth buffer capacity of the receiving device is limited, and excessive repetitive emulation packets preempt the limited bandwidth resources.

(2) The amount of data of the repeated simulation message is too large, so that some useful simulation messages can only be discarded.

(3) A great burden on the work of the device CPU.

Summary of the invention

The embodiment of the invention provides a method and a device for detecting a repeated simulation message, which can effectively detect a repeated simulation message transmitted in a network environment.

In order to solve the above technical problem, an embodiment of the present invention provides a method for detecting a repeated simulation message, including:

Acquiring the first simulation message received in the first time period and the second simulation message received in the second time period;

Detecting a sequence number field value in the pseudowire control word of the first simulation message and a sequence number field value in the pseudowire control word of the second simulation message;

Comparing the sequence number field value in the pseudowire control word of the first simulation message with the sequence number field value in the pseudowire control word of the second simulation message, when the second simulation message exists and the first simulation message When the same sequence number field value is used, it is determined that the second simulation message has a simulation message that is overlapped with at least part of the simulation message of the first simulation message.

Optionally, after the obtaining the first simulation message received in the first time period and the second simulation message received in the second time period, the method further includes:

The first simulation message and the second simulation message are respectively stored.

Optionally, after determining that the second simulation message has a simulation message that is repeated with the at least part of the simulation message of the first simulation message, the method further includes:

And searching for a corresponding repeated simulation message according to the same sequence number field value that exists in the second simulation message and the first simulation message;

Delete the repeated simulation message.

Optionally, wherein the second time period and the first time period are adjacent time periods.

Optionally, the method further includes:

Obtaining a third simulation message received in the third time period and a fourth simulation message received in the fourth time period, where the third time period and the second time period are adjacent time segments, and the third time period and the fourth time period The time period is an adjacent time period;

Detecting a sequence number field value in a pseudowire control word of the third simulation message and a sequence number field value in a pseudowire control word of the fourth simulation message;

Comparing the sequence number field value in the pseudowire control word of the third simulation message with the sequence number field value in the pseudowire control word of the fourth simulation message, when the fourth simulation message exists and the third simulation message When the same sequence number field value is used, it is determined that there is a simulation message in the fourth simulation message that is overlapped with at least part of the simulation message of the third simulation message.

The embodiment of the invention further provides an apparatus for detecting a repeated simulation message, comprising:

The first acquiring module is configured to acquire the first simulation packet received in the first time period and the second simulation packet received in the second time period;

a first detecting module, configured to detect a serial number field value in a pseudowire control word of the first simulation message and a serial number field value in a pseudowire control word of the second simulation message;

The first processing module is configured to compare the serial number field value in the pseudowire control word of the first simulation message with the serial number field value in the pseudowire control word of the second simulation message, when the second simulation message is When there is the same sequence number field value as the first simulation message, it is determined that there is a simulation message in the second simulation message that is overlapped with at least part of the simulation message of the first simulation message.

Optionally, the device further includes:

The storage module is configured to store the first simulation message and the second simulation message respectively.

Optionally, the device further includes:

The searching module is configured to find a corresponding repeated simulation message according to the same sequence number field value that exists in the second simulation message and the first simulation message;

The module is deleted and set to delete the repeated simulation message.

Optionally, the device further includes:

a second acquiring module, configured to acquire a third simulation packet received in a third time period and a fourth simulation packet received in a fourth time period, where the third time period and the second time period are adjacent time segments, The third time period and the fourth time period are adjacent time periods;

a second detecting module, configured to detect a serial number field value in the pseudowire control word of the third simulation message and a serial number field value in the pseudowire control word of the fourth simulation message;

The second processing module is configured to compare the serial number field value in the pseudowire control word of the third simulation message with the serial number field value in the pseudowire control word of the fourth simulation message, when the fourth simulation message When there is the same sequence number field value as the third simulation message, it is determined that there is a simulation message in the fourth simulation message that is repeated with at least part of the simulation message of the third simulation message.

The embodiment of the present invention further provides a computer readable storage medium, where the storage medium stores a computer program, where the computer program includes program instructions, when the program instruction is executed by the network node device, enabling the device to perform the above detection and repeated simulation The method of the message.

The beneficial effects of the embodiment of the present invention are: determining the existence of the repeated simulation message by comparing the value of the serial number field in the pseudowire control word of the simulation message in the adjacent time period, and according to the same serial number field value Effectively search for corresponding duplicate simulation messages and delete duplicate simulation messages to effectively avoid network problems caused by repeated simulation messages. In addition, by detecting duplicate simulation messages with a large amount of data, the loss of useful simulation messages can also be avoided.

BRIEF abstract

FIG. 1 is a schematic diagram of networking of an application of a simulated message;

2 is a schematic diagram of networking for transmitting simulation packets in an MPLS network according to an embodiment of the present invention;

3 is a flow chart 1 of a method for detecting a repeated simulation message according to an embodiment of the present invention;

4 is a second flowchart of a method for detecting a repeated simulation message according to an embodiment of the present invention;

FIG. 5 is a flowchart 3 of a method for detecting a repeated simulation message according to an embodiment of the present invention;

6 is a flow chart showing the overall steps of a method for detecting a repeated simulation message according to an embodiment of the present invention;

7 is a block diagram of a device for detecting a repeated simulation message according to an embodiment of the present invention;

FIG. 8 is a second block diagram of a device for detecting repeated simulation messages according to an embodiment of the present invention; FIG.

FIG. 9 is a block diagram 3 of a device for detecting a repeated simulation message according to an embodiment of the present invention; FIG.

FIG. 10 is a block diagram 4 showing an apparatus for detecting a repeated simulation message according to an embodiment of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other. Additionally, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

As shown in FIG. 2, it is a networking diagram of transmitting an emulation packet in an MPLS network according to an embodiment of the present invention. The emulation packet enters the MPLS network on the access side and is transmitted in the MPLS network, and the MPLS transport network is a narrowband transport network. It should be noted that the method for detecting the repeated simulation message in the embodiment of the present invention needs to enable the pseudowire (PW) control word function on the system device, and the serial number in the pseudowire control word is defined by the standard instead of being customized.

As shown in FIG. 3, an embodiment of the present invention provides a method for detecting a repeated simulation message, including:

Step S100: Obtain a first simulation message received in a first time period and a second simulation message received in a second time period;

Step S200: detecting a sequence number field value in a pseudowire control word of the first simulation message and a sequence number field value in a pseudowire control word of the second simulation message;

Step S300: Comparing the sequence number field value in the pseudowire control word of the first simulation message with the sequence number field value in the pseudowire control word of the second simulation message, when the second simulation message exists and the first When the same sequence number field value of the message is simulated, it is determined that the second simulation message has a simulation message that is repeated with at least part of the simulation message of the first simulation message.

Specifically, after the system device acquires the first simulation message of the first time period and the second simulation message of the second time period, the serial number in the pseudo line control word of the first simulation message and the second simulation message The field value is detected, and the detected result is compared. When the second simulation message has the same sequence number field value as the first simulation message, it may be determined that at least part of the second simulation message exists and the first Simulation message with simulated message repetition. By comparing the value of the serial number field in the pseudowire control word of the simulation message in the adjacent time period, the existence of the repeated simulation message is determined, and the scheme is simple, reliable and accurate. In the embodiment of the present invention, on the basis of the existing chip, the serial number field value in the pseudo line control word of the first simulation message and the serial number field value in the pseudo line control word of the second simulation message are implemented at the software level. Detection eliminates the cumbersome use of pure chip algorithms. It should be noted that the value of the sequence number field in the pseudo-line control word of different simulation messages is different, and different simulation messages are distinguished according to the difference of the serial number field values in the pseudo-line control words of different simulation messages. Similarly, the simulation message with the same sequence number field value is the same simulation message.

It should be noted that the pseudowire control word structure includes:

Unframed structure:

Framing structure:

It should be noted that the sequence number is a sequence number, and the embodiment of the present invention is applicable to the transmission of the simulation message in the MPLS network, including framing and non-framing simulation messages, and the framing simulation message includes Pcm30, pcm30crc, pcm31, pcm31crc.

In the above embodiment of the present invention, after obtaining the first simulation message received in the first time period and the second simulation message received in the second time period, the method further includes:

Specifically, the system device stores the first simulation message in the first time period and then stores the first simulation message in the first buffer unit; and then acquires the second simulation message in the second time period to obtain the second time period. After the second simulation message, the second simulation message is stored in the second buffer unit. The size of the first buffer unit and the second buffer unit depends on the size of the memory space of the system device. The size of the first simulation packet in the first time period depends on the size of the first buffer unit, and the second simulation packet in the second time period. The size depends on the size of the second cache unit.

In the foregoing embodiment of the present invention, as shown in FIG. 4, after determining that the second simulation message has a simulation message that is overlapped with at least part of the simulation message of the first simulation message, the method further includes:

Step S400: Find a corresponding repeated simulation message according to the same sequence number field value that exists in the second simulation message and the first simulation message;

In step S500, the repeated simulation message is deleted.

Specifically, because the simulation message having the same sequence number field value is the same simulation message, according to the same sequence number field value existing in the first simulation message, the corresponding repeated simulation is found. The message discards one or more simulated packets, leaving only one emulation message for transmission. By deleting the repeated simulation packets, the reliability of the network can be greatly improved, thereby effectively avoiding network problems caused by repeated simulation messages. Further, by deleting the repeated simulation message with a large amount of data, the loss of the beneficial simulation message can be avoided.

In the above embodiment of the present invention, in the method:

The second time period and the first time period are adjacent time periods.

The system device compares the sequence number field values in the pseudowire control words of the simulation message in the adjacent time period, determines the existence of the repeated simulation message, and detects the repeated simulation message for processing. Specifically, the system device receives the first simulation message of the first time period and the second simulation message of the second time period, and serial numbers in the pseudo-line control words of the first simulation message and the second simulation message The field values are compared to determine the existence of duplicate simulation messages. a pseudowire of one or more emulation messages in the second emulation message When the serial number field value in the control word is the same as the serial number field value in the pseudowire control word of one or more simulation messages in the first simulation message, the corresponding duplicate simulation message is found and deleted.

In the above embodiment of the present invention, as shown in FIG. 5, the method further includes:

Step S600: Obtain a third simulation message received in a third time period and a fourth simulation message received in a fourth time period, where the third time period and the second time period are adjacent time segments, and the third time period And the fourth time period is an adjacent time period;

Step S700: detecting a sequence number field value in a pseudowire control word of the third simulation message and a sequence number field value in a pseudowire control word of the fourth simulation message;

Step S800: Comparing the sequence number field value in the pseudowire control word of the third simulation message with the sequence number field value in the pseudowire control word of the fourth simulation message, when the fourth simulation message exists and the third When the same sequence number field value of the message is simulated, it is determined that there is a simulation message in the fourth simulation message that is repeated with at least part of the simulation message of the third simulation message.

Specifically, the system device receives the third simulation message of the third time period and the fourth simulation message of the fourth time period, and serial numbers in the pseudo-line control words of the third simulation message and the fourth simulation message The field values are compared to determine the existence of duplicate simulation messages. The serial number field value in the pseudowire control word of one or more simulation messages in the fourth simulation message and the serial number in the pseudowire control word of one or more simulation messages in the third simulation message When the field values are the same, the corresponding duplicate simulation message is found and deleted. In the same way, the above processing is repeated for the fifth simulation message of the fifth time period and the sixth simulation message of the sixth time period, and the repeated simulation message is found.

FIG. 6 is a flow chart showing the overall steps of a method for detecting a repeated simulation message according to an embodiment of the present invention.

Step S101: Put the first simulation message of the first time period into the first buffer unit.

Step S102: Read a sequence number field value in a pseudo line control word of the first simulation message in the first buffer unit.

Step S103: Put the second simulation message of the second time period into the second buffer unit.

Step S104: Read a sequence number field value in a pseudowire control word of the second simulation message in the second buffer unit.

Step S105: Compare the sequence number field value in the pseudowire control word of the first simulation message and the second simulation message, and if there is the same sequence number field value, determine that there is a duplicate simulation message.

Step S106: The system device searches and deletes the repeated simulation message according to the determination that the repeated simulation message exists. After the repeated simulation message of the second time period is deleted, the process returns to step S101 to determine the repeated simulation message in the next first time period and the next second time period. It should be noted that the next first time period here is the third time period, the fifth time period, the seventh time period, and the like; and so on, the next second time period is the fourth time period and the sixth time. Time period and eighth time period, etc.

An embodiment of the present invention further provides an apparatus for detecting a repetitive emulation message, including a processor and a program storage device. As shown in FIG. 7, the method further includes:

The first obtaining module 10 is adapted to obtain the first simulation message received in the first time period and the second simulation message received in the second time period;

The first detecting module 20 is adapted to detect a sequence number field value in the pseudowire control word of the first simulation message and a sequence number field value in the pseudowire control word of the second simulation message;

The first processing module 30 is configured to compare the sequence number field value in the pseudowire control word of the first simulation message with the sequence number field value in the pseudowire control word of the second simulation message, when the second simulation report When there is the same sequence number field value as the first simulation message, it is determined that there is a simulation message in the second simulation message that is repeated with at least part of the simulation message of the first simulation message.

In the above embodiment of the present invention, the device further includes:

The storage module 40 is adapted to store the first simulation message and the second simulation message respectively.

In the above embodiment of the present invention, as shown in FIG. 8, the storage module 40 includes:

The first buffer unit 41 is adapted to store the first simulation message;

The second buffer unit 42 is adapted to store the second simulation message.

In the above embodiment of the present invention, as shown in FIG. 9, the device further includes:

The searching module 50 is configured to search for a corresponding repeated simulation message according to the same sequence number field value that exists in the second simulation message and the first simulation message;

The deletion module 60 is adapted to delete the duplicate simulation message.

In the above embodiment of the present invention, as shown in FIG. 10, the device further includes:

The second obtaining module 70 is adapted to obtain the third simulation message and the fourth time received in the third time period. a fourth simulation message received by the inter-segment, wherein the third time period and the second time period are adjacent time segments, and the third time period and the fourth time period are adjacent time segments;

The second detecting module 80 is configured to detect a sequence number field value in the pseudowire control word of the third simulation message and a sequence number field value in the pseudowire control word of the fourth simulation message;

The second processing module 90 is configured to compare the sequence number field value in the pseudowire control word of the third simulation message with the sequence number field value in the pseudowire control word of the fourth simulation message, when the fourth simulation report When there is the same sequence number field value as the third simulation message, it is determined that there is a simulation message in the fourth simulation message that is repeated with at least part of the simulation message of the third simulation message.

In the method for detecting a repeated simulation message in the embodiment of the present invention, by comparing the serial number field values in the pseudowire control word of the simulation message in the adjacent time period, determining the existence of the repeated simulation message, and according to the same The serial number field value is used to find the corresponding duplicate simulation message, and the repeated simulation message is deleted, which can greatly improve the reliability of the network, thereby effectively avoiding network problems caused by repeated simulation messages. Further, by deleting the repeated simulation message with a large amount of data, the loss of the beneficial simulation message can be avoided.

It should be noted that the apparatus for detecting the repeated simulation message provided by the embodiment of the present invention is the apparatus applying the foregoing method, and all the embodiments of the foregoing method are applicable to the apparatus, and all of the same or similar beneficial effects can be achieved.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Variations or substitutions are readily conceivable within the scope of the present invention by those skilled in the art and are within the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Industrial applicability

By comparing the serial number field values in the pseudowire control words of the simulated message in the adjacent time period, the existence of the repeated simulation message is determined, and the corresponding duplicate simulation report is effectively searched according to the same serial number field value. Text, and delete the repeated simulation message, can effectively avoid the network problem caused by repeated simulation messages. In addition, by detecting duplicate simulation messages with a large amount of data, the loss of useful simulation messages can also be avoided.

Claims

A method for detecting repeated simulation messages, comprising:

Acquiring the first simulation message received in the first time period and the second simulation message received in the second time period;

Detecting a sequence number field value in the pseudowire control word of the first simulation message and a sequence number field value in the pseudowire control word of the second simulation message;

Comparing the sequence number field value in the pseudowire control word of the first simulation message with the sequence number field value in the pseudowire control word of the second simulation message, when the second simulation message exists When the sequence number field value is the same as the first simulation message, it is determined that the second simulation message has a simulation message that is overlapped with at least part of the simulation message of the first simulation message.
The method of claim 1, wherein after acquiring the first simulation message received in the first time period and the second simulation message received in the second time period, the method further includes:

The first simulation message and the second simulation message are respectively stored.
The method of claim 1, wherein after determining that the second simulation message has a simulation message that is repeated with the at least part of the simulation message of the first simulation message, the method further includes:

And searching for a corresponding repeated simulation message according to the same sequence number field value that exists in the second simulation packet in the second simulation packet;

Delete the repeated simulation message.
The method of claim 1 wherein

The second time period and the first time period are adjacent time periods.
The method of claim 1 further comprising:

Obtaining a third simulation packet received in the third time period and a fourth simulation packet received in the fourth time period, where the third time period and the second time period are adjacent time segments, where the The third time period and the fourth time period are adjacent time periods;

Detecting a sequence number field value in the pseudowire control word of the third simulation message and a sequence number field value in the pseudowire control word of the fourth simulation message;

And the serial number field value in the pseudowire control word of the third simulation message is compared with the fourth simulation report Comparing the value of the sequence number field in the pseudowire control word of the text, when the fourth simulation message has the same sequence number field value as the third simulation message, determining that the fourth simulation message exists An emulation message repeated with at least part of the emulation message of the third emulation message.
A device for detecting repeated simulation messages, comprising:

The first acquiring module is configured to acquire the first simulation packet received in the first time period and the second simulation packet received in the second time period;

a first detecting module, configured to detect a sequence number field value in a pseudowire control word of the first simulation message and a sequence number field value in a pseudowire control word of the second simulation message;

a first processing module, configured to compare a sequence number field value in the pseudowire control word of the first simulation message with a sequence number field value in a pseudowire control word of the second simulation message, When the second simulation message has the same sequence number field value as the first simulation message, it is determined that the second simulation message is overlapped with at least part of the simulation message of the first simulation message. Simulation message.
The apparatus of claim 6 further comprising:

The storage module is configured to store the first simulation message and the second simulation message respectively.
The apparatus of claim 6 further comprising:

a locating module, configured to search for a corresponding repeated simulation message according to the same sequence number field value that exists in the second simulation packet and the first simulation packet;

The module is deleted and set to delete the repeated simulation message.
The apparatus of claim 6 further comprising:

a second acquiring module, configured to acquire a third simulation packet received in a third time period and a fourth simulation packet received in a fourth time period, where the third time period and the second time period are The adjacent time period, the third time period and the fourth time period are adjacent time segments;

a second detection module, configured to detect a sequence number field value in the pseudowire control word of the third simulation message and a sequence number field value in the pseudowire control word of the fourth simulation message;

a second processing module, configured to set a serial number word in a pseudowire control word of the third simulation message The segment value is compared with the sequence number field value in the pseudowire control word of the fourth simulation message, and when the fourth simulation message has the same sequence number field value as the third simulation message, the determination is performed. There is a simulation message in the fourth simulation message that is repeated with at least part of the simulation message of the third simulation message.
A computer readable storage medium storing a computer program, the computer program comprising program instructions, when the program instructions are executed by a network node device, causing the device to perform the method of any of claims 1-5 .